示例#1
0
class Plugin:
    """
    Handle Plugins
    """
    def __init__(self, **kargs):
        self.path_dirs = PathDirs(**kargs)
        self.manifest = join(self.path_dirs.meta_dir, "plugin_manifest.cfg")
        self.p_helper = PluginHelper(**kargs)
        self.d_client = docker.from_env()
        self.logger = Logger(__name__)

    def add(self,
            repo,
            tools=None,
            overrides=None,
            version="HEAD",
            branch="master",
            build=True,
            user=None,
            pw=None,
            groups=None,
            version_alias=None,
            wild=None,
            remove_old=True,
            disable_old=True,
            limit_groups=None,
            core=False):
        """
        Adds a plugin of tool(s)
        tools is a list of tuples, where the pair is a tool name (path to
        Dockerfile) and version tools are for explicitly limiting which tools
        and versions (if version in tuple is '', then defaults to version)
        overrides is a list of tuples, where the pair is a tool name (path to
        Dockerfile) and a version overrides are for explicitly removing tools
        and overriding versions of tools (if version in tuple is '', then
        tool is removed, otherwise that tool is checked out at the specific
        version in the tuple) if tools and overrides are left as empty lists,
        then all tools in the repo are pulled down at the version and branch
        specified or defaulted to version is globally set for all tools, unless
        overridden in tools or overrides branch is globally set for all tools
        build is a boolean of whether or not to build the tools now user is the
        username for a private repo if needed pw is the password to go along
        with the username for a private repo groups is globally set for all
        tools version_alias is globally set for all tools and is a mapping
        from a friendly version tag to the real version commit ID wild lets
        you specify individual overrides for additional values in the tuple
        of tools or overrides.  wild is a list containing one or more
        of the following: branch, build, groups, version_alias
        the order of the items in the wild list will expect values to be
        tacked on in the same order to the tuple for tools and overrides in
        additional to the tool name and version
        remove_old lets you specify whether or not to remove previously found
        tools that match to ones being added currently (note does not stop
        currently running instances of the older version)
        disable_old lets you specify whether or not to disable previously found
        tools that match to ones being added currently (note does not stop
        currently running instances of the older version)
        limit_groups is a list of groups to build tools for that match group
        names in vent.template of each tool if exists
        Examples:
        - repo=fe:
        (get all tools from repo 'fe' at version 'HEAD' on branch 'master')
        - repo=foo, version="3d1f", branch="foo":
        (get all tools from repo 'foo' at verion '3d1f' on branch 'foo')
        - repo=foo, tools=[('bar', ''), ('baz', '1d32')]:
        (get only 'bar' from repo 'foo' at version 'HEAD' on branch
        'master' and 'baz' from repo 'foo' at version '1d32' on branch
        'master', ignore all other tools in repo 'foo')
        - repo=foo overrides=[('baz/bar', ''), ('.', '1c4e')], version='4fad':
        (get all tools from repo 'foo' at verion '4fad' on branch 'master'
        except 'baz/bar' and for tool '.' get version '1c4e')
        - repo=foo tools=[('bar', '1a2d')], overrides=[('baz', 'f2a1')]:
        (not a particularly useful example, but get 'bar' from 'foo' at
        version '1a2d' and get 'baz' from 'foo' at version 'f2a1' on branch
        'master', ignore all other tools)
        """

        # initialize and store class objects
        self.repo = repo.lower()
        self.tools = tools
        if (isinstance(self.tools, list) and len(self.tools) == 0):
            self.tools = None
        self.overrides = overrides
        self.version = version
        self.branch = branch
        self.build = build
        self.groups = groups
        self.core = core
        self.path, self.org, self.name = self.p_helper.get_path(repo,
                                                                core=core)

        # TODO these need to be implemented
        self.version_alias = version_alias
        self.wild = wild
        self.remove_old = remove_old
        self.disable_old = disable_old
        self.limit_groups = limit_groups

        status = (True, None)
        status_code, _ = self.p_helper.clone(self.repo, user=user, pw=pw)
        self.p_helper.apply_path(self.repo)
        status = self._build_tools(status_code)

        return status

    @ErrorHandler
    def add_image(self,
                  image,
                  link_name,
                  tag=None,
                  registry=None,
                  groups=None):
        """
        Add an image with a tag from a Docker registry. Defaults to the Docker
        Hub if not specified. Use a Template object to write an image's
        information to `plugin_manifest.cfg'

        Args:
            image(type): docker image
            link_name(type): fill me

        Kwargs:
            tag(type):
            registry(type):
            groups(type): Group that the docker image belongs to.

        Returns:
            tuple(bool,str): if the function completed successfully,
                (True, name of image).
                If the function failed, (False, message about failure)
        """

        status = (True, None)
        try:
            pull_name = image
            org = ''
            name = image
            if '/' in image:
                org, name = image.split('/')
            else:
                org = "official"
            if not tag:
                tag = "latest"
            if not registry:
                registry = "docker.io"
            full_image = registry + "/" + image + ":" + tag
            image = self.d_client.images.pull(full_image)
            section = ':'.join([registry, org, name, '', tag])
            namespace = org + '/' + name

            # set template section and options for tool at version and branch
            template = Template(template=self.manifest)
            template.add_section(section)
            template.set_option(section, "name", name)
            template.set_option(section, "pull_name", pull_name)
            template.set_option(section, "namespace", namespace)
            template.set_option(section, "path", "")
            template.set_option(section, "repo", registry + '/' + org)
            template.set_option(section, "enabled", "yes")
            template.set_option(section, "branch", "")
            template.set_option(section, "version", tag)
            template.set_option(section, "last_updated",
                                str(datetime.utcnow()) + " UTC")
            template.set_option(section, "image_name",
                                image.attrs['RepoTags'][0])
            template.set_option(section, "type", "registry")
            template.set_option(section, "link_name", link_name)
            template.set_option(section, "commit_id", "")
            template.set_option(section, "built", "yes")
            template.set_option(section, "image_id",
                                image.attrs['Id'].split(':')[1][:12])
            template.set_option(section, "groups", groups)

            # write out configuration to the manifest file
            template.write_config()
            status = (True, "Successfully added " + full_image)
        except Exception as e:  # pragma: no cover
            self.logger.error("Couldn't add image because " + str(e))
            status = (False, str(e))
        return status

    @ErrorHandler
    def builder(self,
                template,
                match_path,
                image_name,
                section,
                build=None,
                branch=None,
                version=None):
        """
        Build tools
        """

        self.logger.info("Starting: builder")
        self.logger.info("install path: " + str(match_path))
        self.logger.info("image name: " + str(image_name))
        self.logger.info("build: " + str(build))
        self.logger.info("branch: " + str(branch))
        self.logger.info("version: " + str(version))

        if build:
            self.build = build
        elif not hasattr(self, 'build'):
            self.build = True

        if branch:
            self.branch = branch
        elif not hasattr(self, 'branch'):
            self.branch = 'master'

        if version:
            self.version = version
        elif not hasattr(self, 'version'):
            self.version = 'HEAD'

        cwd = getcwd()
        self.logger.info("current working directory: " + str(cwd))
        try:
            chdir(match_path)
        except Exception as e:  # pragma: no cover
            self.logger.error("unable to change to directory: " +
                              str(match_path) + " because: " + str(e))
            return None

        template = self._build_image(template, match_path, image_name, section)
        chdir(cwd)

        # get untagged images
        untagged = None
        try:
            untagged = self.d_client.images.list(filters={
                "label": "vent",
                "dangling": "true"
            })
        except Exception as e:  # pragma: no cover
            self.logger.error("unabled to get images to remove: " + str(e))

        # remove untagged images
        if untagged:
            deleted_images = ""
            for image in untagged:
                deleted_images = '\n'.join([deleted_images, image.id])
                try:
                    self.d_client.images.remove(image.id, force=True)
                except Exception as e:  # pragma: no cover
                    self.logger.warning("unable to remove image: " + image.id +
                                        " because: " + str(e))
            self.logger.info("removed dangling images:" + deleted_images)

        self.logger.info("template of builder: " + str(template))
        self.logger.info("Finished: builder")
        return template

    def _build_tools(self, status):
        """
        Create list of tools, paths, and versions to be built and sends them to
        build_manifest

        Args:
            status (tuple(bool, str)):

        Returns:
            response (tuple(bool, str)): If True, then the function performed
            as expected and the str is a string
        """

        response = (True, None)
        # TODO implement features: wild, remove_old, disable_old, limit_groups

        # check result of clone, ensure successful or that it already exists
        if status:
            response = self.p_helper.checkout(branch=self.branch,
                                              version=self.version)
            if response[0]:
                search_groups = None
                if self.core:
                    search_groups = 'core'
                matches = []
                if self.tools is None and self.overrides is None:
                    # get all tools
                    matches = self.p_helper.available_tools(
                        self.path, version=self.version, groups=search_groups)
                elif self.tools is None:
                    # there's only something in overrides
                    # grab all the tools then apply overrides
                    matches = self.p_helper.available_tools(
                        self.path, version=self.version, groups=search_groups)
                    # !! TODO apply overrides to matches
                elif self.overrides is None:
                    # there's only something in tools
                    # only grab the tools specified
                    matches = PluginHelper.tool_matches(tools=self.tools,
                                                        version=self.version)
                else:
                    # both tools and overrides were specified
                    # grab only the tools specified, with the overrides applied
                    o_matches = PluginHelper.tool_matches(tools=self.tools,
                                                          version=self.version)
                    matches = o_matches
                    for override in self.overrides:
                        override_t = None
                        if override[0] == '.':
                            override_t = ('', override[1])
                        else:
                            override_t = override
                        for match in o_matches:
                            if override_t[0] == match[0]:
                                matches.remove(match)
                                matches.append(override_t)
                if len(matches) > 0:
                    self._build_manifest(matches)
        else:
            response = (False, status)
        return response

    def _build_manifest(self, matches):
        """
        Builds and writes the manifest for the tools being added
        """

        # !! TODO check for pre-existing that conflict with request and
        #         disable and/or remove image
        for match in matches:
            # keep track of whether or not to write an additional manifest
            # entry for multiple instances, and how many additional entries
            # to write
            addtl_entries = 0
            # remove the .git for adding repo info to manifest
            if self.repo.endswith('.git'):
                self.repo = self.repo[:-4]
            # remove @ in match for template setting purposes
            if match[0].find('@') >= 0:
                true_name = match[0].split('@')[1]
            else:
                true_name = match[0]
            template = Template(template=self.manifest)
            # TODO check for special settings here first for the specific match
            self.version = match[1]
            response = self.p_helper.checkout(branch=self.branch,
                                              version=self.version)
            if response[0]:
                section = self.org + ":" + self.name + ":" + true_name + ":"
                section += self.branch + ":" + self.version
                # need to get rid of temp identifiers for tools in same repo
                match_path = self.path + match[0].split('@')[0]
                if not self.core:
                    image_name = self.org + "-" + self.name + "-"
                    if match[0] != '':
                        # if tool is in a subdir, add that to the name of the
                        # image
                        image_name += '-'.join(match[0].split('/')[1:]) + "-"
                    image_name += self.branch + ":" + self.version
                else:
                    image_name = ('cyberreboot/vent-' +
                                  match[0].split('/')[-1] + ':' + self.branch)
                image_name = image_name.replace('_', '-')

                # check if the section already exists
                exists, options = template.section(section)
                previous_commit = None
                previous_commits = None
                head = False
                if exists:
                    for option in options:
                        # TODO check if tool name but a different version
                        #      exists - then disable/remove if set
                        if option[0] == 'version' and option[1] == 'HEAD':
                            head = True
                        if option[0] == 'built' and option[1] == 'yes':
                            # !! TODO remove pre-existing image
                            pass
                        if option[0] == 'commit_id':
                            previous_commit = option[1]
                        if option[0] == 'previous_versions':
                            previous_commits = option[1]

                # check if tool comes from multi directory
                multi_tool = "no"
                if match[0].find('@') >= 0:
                    multi_tool = "yes"

                # !! TODO
                # check if section should be removed from config i.e. all tools
                # but new commit removed one that was in a previous commit

                image_name = image_name.lower()
                if image_name.endswith(":head"):
                    image_name = image_name.split(":head")[0] + ":HEAD"

                # set template section & options for tool at version and branch
                template.add_section(section)
                template.set_option(section, "name", true_name.split('/')[-1])
                template.set_option(section, "namespace",
                                    self.org + '/' + self.name)
                template.set_option(section, "path", match_path)
                template.set_option(section, "repo", self.repo)
                template.set_option(section, "enabled", "yes")
                template.set_option(section, "multi_tool", multi_tool)
                template.set_option(section, "branch", self.branch)
                template.set_option(section, "version", self.version)
                template.set_option(section, "last_updated",
                                    str(datetime.utcnow()) + " UTC")
                template.set_option(section, "image_name",
                                    image_name.replace('@', '-'))
                template.set_option(section, "type", "repository")
                # save settings in vent.template to plugin_manifest
                # watch for multiple tools in same directory
                # just wanted to store match path with @ for path for use in
                # other actions
                tool_template = 'vent.template'
                if match[0].find('@') >= 0:
                    tool_template = match[0].split('@')[1] + '.template'
                vent_template_path = join(match_path, tool_template)
                if os.path.exists(vent_template_path):
                    with open(vent_template_path) as f:
                        vent_template_val = f.read()
                else:
                    vent_template_val = ''
                settings_dict = ParsedSections(vent_template_val)
                for setting in settings_dict:
                    template.set_option(section, setting,
                                        json.dumps(settings_dict[setting]))
                # TODO do we need this if we save as a dictionary?
                vent_template = Template(vent_template_path)
                vent_status, response = vent_template.option("info", "name")
                if vent_status:
                    template.set_option(section, "link_name", response)
                else:
                    template.set_option(section, "link_name",
                                        true_name.split('/')[-1])
                commit_id = None
                if self.version == 'HEAD':
                    # remove @ in multi-tools
                    chdir(match_path)
                    cmd = "git rev-parse --short HEAD"
                    commit_id = check_output(shlex.split(cmd),
                                             stderr=STDOUT,
                                             close_fds=True).strip()
                    template.set_option(section, "commit_id", commit_id)
                if head:
                    # no need to store previous commits if not HEAD, since
                    # the version will always be the same commit ID
                    if previous_commit and previous_commit != commit_id:
                        if (previous_commits
                                and previous_commit not in previous_commits):
                            previous_commits = (previous_commit + ',' +
                                                previous_commits)
                        elif not previous_commits:
                            previous_commits = previous_commit
                    if previous_commits and previous_commits != commit_id:
                        template.set_option(section, "previous_versions",
                                            previous_commits)

                if self.version_alias:
                    template.set_option(section, "version_alias",
                                        self.version_alias)
                if self.groups:
                    template.set_option(section, "groups", self.groups)
                else:
                    groups = vent_template.option("info", "groups")
                    if groups[0]:
                        template.set_option(section, "groups", groups[1])
                    # set groups to empty string if no groups defined for tool
                    else:
                        template.set_option(section, "groups", '')
                template = self._build_image(template, match_path, image_name,
                                             section)
                # write additional entries for multiple instances
                if addtl_entries > 0:
                    # add 2 for naming conventions
                    for i in range(2, addtl_entries + 2):
                        addtl_section = section.rsplit(':', 2)
                        addtl_section[0] += str(i)
                        addtl_section = ':'.join(addtl_section)
                        template.add_section(addtl_section)
                        orig_vals = template.section(section)[1]
                        for val in orig_vals:
                            template.set_option(addtl_section, val[0], val[1])
                        template.set_option(addtl_section, "name",
                                            true_name.split('/')[-1] + str(i))

            # write out configuration to the manifest file
            template.write_config()

        # reset to repo directory
        chdir(self.path)
        return

    def _build_image(self,
                     template,
                     match_path,
                     image_name,
                     section,
                     build_local=False):
        """
        Build docker images and store results in template
        """
        def set_instances(template, section, built, image_id=None):
            """ Set build information for multiple instances """
            self.logger.info("entering set_instances")
            i = 2
            while True:
                addtl_section = section.rsplit(':', 2)
                addtl_section[0] += str(i)
                addtl_section = ':'.join(addtl_section)
                self.logger.info(addtl_section)
                if template.section(addtl_section)[0]:
                    template.set_option(addtl_section, "built", built)
                    if image_id:
                        template.set_option(addtl_section, "image_id",
                                            image_id)
                    template.set_option(addtl_section, "last_updated",
                                        Timestamp())
                else:
                    break
                i += 1

        # determine whether a tool should be considered a multi instance
        try:
            settings_dict = json.loads(template.option(section, 'settings')[1])
            if int(settings_dict['instances']) > 1:
                multi_instance = True
            else:
                multi_instance = False
        except Exception:
            multi_instance = False
        # !! TODO return status of whether it built successfully or not
        if self.build:
            cwd = getcwd()
            chdir(match_path)
            try:
                # currently can't use docker-py because it doesn't support
                # labels on images yet
                name = template.option(section, "name")
                groups = template.option(section, "groups")
                repo = template.option(section, "repo")
                t_type = template.option(section, "type")
                if groups[1] == "" or not groups[0]:
                    groups = (True, "none")
                if not name[0]:
                    name = (True, image_name)
                # pull if '/' in image_name, fallback to build
                pull = False
                if '/' in image_name and not build_local:
                    try:
                        self.logger.info("Trying to pull " + image_name)
                        output = check_output(shlex.split("docker pull " +
                                                          image_name),
                                              stderr=STDOUT,
                                              close_fds=True)
                        self.logger.info("Pulling " + name[1] + "\n" +
                                         str(output))

                        i_attrs = self.d_client.images.get(image_name).attrs
                        image_id = i_attrs['Id'].split(':')[1][:12]

                        if image_id:
                            template.set_option(section, "built", "yes")
                            template.set_option(section, "image_id", image_id)
                            template.set_option(
                                section, "last_updated",
                                str(datetime.utcnow()) + " UTC")
                            # set other instances too
                            if multi_instance:
                                set_instances(template, section, 'yes',
                                              image_id)
                            status = (True, "Pulled " + image_name)
                            self.logger.info(str(status))
                        else:
                            template.set_option(section, "built", "failed")
                            template.set_option(
                                section, "last_updated",
                                str(datetime.utcnow()) + " UTC")
                            # set other instances too
                            if multi_instace:
                                set_instances(template, section, 'failed')
                            status = (False, "Failed to pull image " +
                                      str(output.split('\n')[-1]))
                            self.logger.warning(str(status))
                        pull = True
                    except Exception as e:  # pragma: no cover
                        self.logger.warning("Failed to pull image, going to"
                                            " build instead: " + str(e))
                if not pull:
                    # see if additional tags needed for images tagged at HEAD
                    commit_tag = ""
                    image_name = image_name.replace('@', '-')
                    if image_name.endswith('HEAD'):
                        commit_id = template.option(section, "commit_id")
                        if commit_id[0]:
                            commit_tag = (" -t " + image_name[:-4] +
                                          str(commit_id[1]))
                    # see if additional file arg needed for building multiple
                    # images from same directory
                    file_tag = " ."
                    multi_tool = template.option(section, 'multi_tool')
                    if multi_tool[0] and multi_tool[1] == 'yes':
                        specific_file = template.option(section, 'name')[1]
                        if specific_file == 'unspecified':
                            file_tag = " -f Dockerfile ."
                        else:
                            file_tag = " -f Dockerfile." + specific_file + " ."
                    # update image name with new version for update
                    image_name = image_name.rsplit(':',
                                                   1)[0] + ':' + self.version
                    output = check_output(
                        shlex.split("docker build --label"
                                    " vent --label"
                                    " vent.section=" + section + " --label"
                                    " vent.repo=" + repo[1] + " --label"
                                    " vent.type=" + t_type[1] + " --label"
                                    " vent.name=" + name[1] + " --label"
                                    " vent.groups=" + groups[1] + " -t " +
                                    image_name + commit_tag + file_tag),
                        stderr=STDOUT,
                        close_fds=True)
                    self.logger.info("Building " + name[1] + "\n" +
                                     str(output))
                    image_id = ""
                    for line in output.split("\n"):
                        suc_str = "Successfully built "
                        if line.startswith(suc_str):
                            image_id = line.split(suc_str)[1].strip()
                    template.set_option(section, "built", "yes")
                    template.set_option(section, "image_id", image_id)
                    template.set_option(section, "last_updated",
                                        str(datetime.utcnow()) + " UTC")
                    # set other instances too
                    if multi_instance:
                        set_instances(template, section, 'yes', image_id)
            except Exception as e:  # pragma: no cover
                self.logger.error("unable to build image: " + str(image_name) +
                                  " because: " + str(e))
                template.set_option(section, "built", "failed")
                template.set_option(section, "last_updated",
                                    str(datetime.utcnow()) + " UTC")
                if multi_instance:
                    set_instances(template, section, 'failed')

            chdir(cwd)
        else:
            template.set_option(section, "built", "no")
            template.set_option(section, "last_updated",
                                str(datetime.utcnow()) + " UTC")
            if multi_instance:
                set_instances(template, section, 'no')
        template.set_option(section, 'running', 'no')
        return template

    def list_tools(self):
        """
        Return list of tuples of all tools
        """

        tools = []
        template = Template(template=self.manifest)
        exists, sections = template.sections()
        if exists:
            for section in sections:
                options = {
                    'section': section,
                    'enabled': None,
                    'built': None,
                    'version': None,
                    'repo': None,
                    'branch': None,
                    'name': None,
                    'groups': None,
                    'image_name': None
                }
                for option in options.keys():
                    exists, value = template.option(section, option)
                    if exists:
                        options[option] = value
                tools.append(options)
        return tools

    def remove(self,
               name=None,
               repo=None,
               namespace=None,
               branch="master",
               groups=None,
               enabled="yes",
               version="HEAD",
               built="yes"):
        """
        Remove tool (name) or repository, repository is the url. If no
        arguments are specified, all tools will be removed for the defaults.
        """

        # initialize
        args = locals()
        # want to remove things from manifest regardless of if built
        del args['built']
        status = (True, None)

        # get resulting dict of sections with options that match constraints
        results, template = self.p_helper.constraint_options(args, [])
        for result in results:
            response, image_name = template.option(result, 'image_name')
            name = template.option(result, 'name')[1]
            try:
                settings_dict = json.loads(
                    template.option(result, 'settings')[1])
                instances = int(settings_dict['instances'])
            except Exception:
                instances = 1

            try:
                # check for container and remove
                c_name = image_name.replace(':', '-').replace('/', '-')
                for i in range(1, instances + 1):
                    container_name = c_name + str(i) if i != 1 else c_name
                    container = self.d_client.containers.get(container_name)
                    response = container.remove(v=True, force=True)
                    self.logger.info(response)
                    self.logger.info("Removing plugin container: " +
                                     container_name)
            except Exception as e:  # pragma: no cover
                self.logger.warn("Unable to remove the plugin container: " +
                                 container_name + " because: " + str(e))

            # check for image and remove
            try:
                response = None
                image_id = template.option(result, 'image_id')[1]
                response = self.d_client.images.remove(image_id, force=True)
                self.logger.info(response)
                self.logger.info("Removing plugin image: " + image_name)
            except Exception as e:  # pragma: no cover
                self.logger.warn("Unable to remove the plugin image: " +
                                 image_name + " because: " + str(e))

            # remove tool from the manifest
            for i in range(1, instances + 1):
                res = result.rsplit(':', 2)
                res[0] += str(i) if i != 1 else ''
                res = ':'.join(res)
                if template.section(res)[0]:
                    status = template.del_section(res)
                    self.logger.info("Removing plugin tool: " + res)
        # TODO if all tools from a repo have been removed, remove the repo
        template.write_config()
        return status

    def update(self,
               name=None,
               repo=None,
               namespace=None,
               branch=None,
               groups=None):
        """
        Update tool (name) or repository, repository is the url. If no
        arguments are specified, all tools will be updated
        """

        # initialize
        args = locals()
        status = (False, None)
        options = ['branch', 'groups', 'image_name']

        # get resulting dict of sections with options that match constraints
        results, template = self.p_helper.constraint_options(args, options)
        for result in results:
            # check for container and remove
            try:
                container_name = results['image_name'].replace(':', '-') \
                                                      .replace('/', '-')
                container = self.d_client.containers.get(container_name)
                container.remove(v=True, force=True)
            except Exception as e:  # pragma: no cover
                self.logger.info("Error updating: " + str(result) +
                                 " because: " + str(e))

            # TODO git pull
            # TODO build
            # TODO docker pull
            # TODO update tool in the manifest

            self.logger.info("Updating plugin tool: " + result)
        template.write_config()
        return status

    # !! TODO name or group ?
    def versions(self, name, namespace=None, branch="master"):
        """
        Return available versions of a tool
        """

        # initialize
        args = locals()
        versions = []
        options = ['version', 'previous_versions']

        # get resulting dict of sections with options that match constraints
        results, _ = self.p_helper.constraint_options(args, options)
        for result in results:
            version_list = [results[result]['version']]
            if 'previous_versions' in results[result]:
                version_list += (results[result]['previous_versions']) \
                                .split(',')
            versions.append((result, version_list))
        return versions

    # !! TODO name or group ?
    def current_version(self, name, namespace=None, branch="master"):
        """
        Return current version for a given tool
        """

        # initialize
        args = locals()
        versions = []
        options = ['version']

        # get resulting dict of sections with options that match constraints
        results, _ = self.p_helper.constraint_options(args, options)
        for result in results:
            versions.append((result, results[result]['version']))
        return versions

    # !! TODO name or group ?
    def state(self, name, namespace=None, branch="master"):
        """
        Return state of a tool, disabled/enabled for each version
        """

        # initialize
        args = locals()
        states = []
        options = ['enabled']

        # get resulting dict of sections with options that match constraints
        results, _ = self.p_helper.constraint_options(args, options)
        for result in results:
            if results[result]['enabled'] == 'yes':
                states.append((result, 'enabled'))
            else:
                states.append((result, 'disabled'))
        return states

    # !! TODO name or group ?
    def enable(self, name, namespace=None, branch="master", version="HEAD"):
        """
        Enable tool at a specific version, default to head
        """

        # initialize
        args = locals()
        status = (False, None)

        # get resulting dict of sections with options that match constraints
        results, template = self.p_helper.constraint_options(args, [])
        for result in results:
            status = template.set_option(result, 'enabled', 'yes')
        template.write_config()
        return status

    # !! TODO name or group ?
    def disable(self, name, namespace=None, branch="master", version="HEAD"):
        """
        Disable tool at a specific version, default to head
        """

        # initialize
        args = locals()
        status = (False, None)

        # get resulting dict of sections with options that match constraints
        results, template = self.p_helper.constraint_options(args, [])
        for result in results:
            status = template.set_option(result, 'enabled', 'no')
        template.write_config()
        return status

    def auto_install(self):
        """
        Automatically detects images and installs them in the manifest if they
        are not there already
        """
        template = Template(template=self.manifest)
        sections = template.sections()
        images = self.d_client.images.list(filters={'label': 'vent'})
        add_sections = []
        status = (True, None)
        for image in images:
            if ('Labels' in image.attrs
                    and 'vent.section' in image.attrs['Config']['Labels']
                    and not image.attrs['Config']['Labels']['vent.section']
                    in sections[1]):
                section = image.attrs['Config']['Labels']['vent.section']
                section_str = image.attrs['Config']['Labels'][
                    'vent.section'].split(":")
                template.add_section(section)
                if 'vent.name' in image.attrs['Config']['Labels']:
                    template.set_option(
                        section, 'name',
                        image.attrs['Config']['Labels']['vent.name'])
                if 'vent.repo' in image.attrs['Config']['Labels']:
                    template.set_option(
                        section, 'repo',
                        image.attrs['Config']['Labels']['vent.repo'])
                    git_path = join(self.path_dirs.plugins_dir,
                                    "/".join(section_str[:2]))
                    if not isdir(git_path):
                        # clone it down
                        status = self.p_helper.clone(
                            image.attrs['Config']['Labels']['vent.repo'])
                    template.set_option(section, 'path',
                                        join(git_path, section_str[-3][1:]))
                    # get template settings
                    # TODO account for template files not named vent.template
                    v_template = Template(template=join(
                        git_path, section_str[-3][1:], 'vent.template'))
                    tool_sections = v_template.sections()
                    if tool_sections[0]:
                        for s in tool_sections[1]:
                            section_dict = {}
                            options = v_template.options(s)
                            if options[0]:
                                for option in options[1]:
                                    option_name = option
                                    if option == 'name':
                                        # get link name
                                        template.set_option(
                                            section, "link_name",
                                            v_template.option(s, option)[1])
                                        option_name = 'link_name'
                                    opt_val = v_template.option(s, option)[1]
                                    section_dict[option_name] = opt_val
                            if section_dict:
                                template.set_option(section, s,
                                                    json.dumps(section_dict))
                if ('vent.type' in image.attrs['Config']['Labels']
                        and image.attrs['Config']['Labels']['vent.type']
                        == 'repository'):
                    template.set_option(section, 'namespace',
                                        "/".join(section_str[:2]))
                    template.set_option(section, 'enabled', 'yes')
                    template.set_option(section, 'branch', section_str[-2])
                    template.set_option(section, 'version', section_str[-1])
                    template.set_option(section, 'last_updated',
                                        str(datetime.utcnow()) + " UTC")
                    template.set_option(section, 'image_name',
                                        image.attrs['RepoTags'][0])
                    template.set_option(section, 'type', 'repository')
                if 'vent.groups' in image.attrs['Config']['Labels']:
                    template.set_option(
                        section, 'groups',
                        image.attrs['Config']['Labels']['vent.groups'])
                template.set_option(section, 'built', 'yes')
                template.set_option(section, 'image_id',
                                    image.attrs['Id'].split(":")[1][:12])
                template.set_option(section, 'running', 'no')
                # check if image is running as a container
                containers = self.d_client.containers.list(
                    filters={'label': 'vent'})
                for container in containers:
                    if container.attrs['Image'] == image.attrs['Id']:
                        template.set_option(section, 'running', 'yes')
                add_sections.append(section)
                template.write_config()
        if status[0]:
            status = (True, add_sections)
        return status
示例#2
0
class Plugin:
    """ Handle Plugins """
    def __init__(self, **kargs):
        self.path_dirs = PathDirs(**kargs)
        self.manifest = os.path.join(self.path_dirs.meta_dir,
                                     "plugin_manifest.cfg")
        self.d_client = docker.from_env()
        self.logger = Logger(__name__)

    def apply_path(self, repo):
        """ Set path to where the repo is and return original path """
        self.logger.info("Starting: apply_path")
        self.logger.info("repo given: " + str(repo))
        status = (True, None)
        try:
            # rewrite repo for consistency
            if repo.endswith(".git"):
                repo = repo.split(".git")[0]

            # get org and repo name and path repo will be cloned to
            org, name = repo.split("/")[-2:]
            self.path = os.path.join(self.path_dirs.plugins_dir, org, name)
            self.logger.info("cloning to path: " + str(self.path))

            # save current path
            cwd = os.getcwd()
            # set to new repo path
            os.chdir(self.path)
            status = (True, cwd)
        except Exception as e:
            self.logger.error("apply_path failed with error: " + str(e))
            status = (False, e)
        self.logger.info("Status of apply_path: " + str(status))
        self.logger.info("Finished: apply_path")
        return status

    def repo_branches(self, repo):
        """ Get the branches of a repository """
        self.logger.info("Starting: repo_branches")
        self.logger.info("repo given: " + str(repo))
        status = (True, None)
        branches = []
        try:
            # switch to directory where repo will be cloned to
            status = self.apply_path(repo)
            if status[0]:
                cwd = status[1]
            else:
                self.logger.info(
                    "apply_path failed. Exiting repo_branches with status " +
                    str(status))
                return status

            junk = subprocess.check_output(shlex.split("git pull --all"),
                                           stderr=subprocess.STDOUT,
                                           close_fds=True)
            branch_output = subprocess.check_output(
                shlex.split("git branch -a"),
                stderr=subprocess.STDOUT,
                close_fds=True)
            branch_output = branch_output.split("\n")
            for branch in branch_output:
                b = branch.strip()
                if b.startswith('*'):
                    b = b[2:]
                if "/" in b:
                    branches.append(b.rsplit('/', 1)[1])
                elif b:
                    branches.append(b)

            branches = list(set(branches))
            self.logger.info("branches found: " + str(branches))
            for branch in branches:
                try:
                    junk = subprocess.check_output(
                        shlex.split("git checkout " + branch),
                        stderr=subprocess.STDOUT,
                        close_fds=True)
                except Exception as e:  # pragma: no cover
                    self.logger.error("repo_branches failed with error: " +
                                      str(e) + " on branch: " + str(branch))
                    status = (False, e)
                    self.logger.info("Exiting repo_branches with status: " +
                                     str(status))
                    return status

            try:
                os.chdir(cwd)
            except Exception as e:  # pragma: no cover
                self.logger.error("unable to change directory to: " +
                                  str(cwd) + "because: " + str(e))

            status = (True, branches)
        except Exception as e:
            self.logger.error("repo_branches failed with error: " + str(e))
            status = (False, e)

        self.logger.info("Status of repo_branches: " + str(status))
        self.logger.info("Finished: repo_branches")
        return status

    def repo_commits(self, repo):
        """ Get the commit IDs for all of the branches of a repository """
        self.logger.info("Starting: repo_commits")
        self.logger.info("repo given: " + str(repo))
        status = (True, None)
        commits = []
        try:
            status = self.apply_path(repo)
            # switch to directory where repo will be cloned to
            if status[0]:
                cwd = status[1]
            else:
                self.logger.info(
                    "apply_path failed. Exiting repo_commits with status: " +
                    str(status))
                return status

            status = self.repo_branches(repo)
            if status[0]:
                branches = status[1]
                for branch in branches:
                    try:
                        branch_output = subprocess.check_output(
                            shlex.split("git rev-list " + branch),
                            stderr=subprocess.STDOUT,
                            close_fds=True)
                        branch_output = ['HEAD'
                                         ] + branch_output.split("\n")[:-1]
                        commits.append((branch, branch_output))
                    except Exception as e:  # pragma: no cover
                        self.logger.error("repo_commits failed with error: " +
                                          str(e) + " on branch: " +
                                          str(branch))
                        status = (False, e)
                        self.logger.info("Exiting repo_commits with status: " +
                                         str(status))
                        return status
            else:
                self.logger.info(
                    "repo_branches failed. Exiting repo_commits with status: "
                    + str(status))
                return status
            try:
                os.chdir(cwd)
            except Exception as e:  # pragma: no cover
                self.logger.error("unable to change directory to: " +
                                  str(cwd) + " because: " + str(e))

            status = (True, commits)
        except Exception as e:
            self.logger.error("repo_commits failed with error: " + str(e))
            status = (False, e)

        self.logger.info("Status of repo_commits: " + str(status))
        self.logger.info("Finished: repo_commits")
        return status

    def repo_tools(self, repo, branch, version):
        """ Get available tools for a repository branch at a version """
        self.logger.info("Starting: repo_tools")
        self.logger.info("repo given: " + str(repo))
        self.logger.info("branch given: " + str(branch))
        self.logger.info("version given: " + str(version))
        status = (True, None)
        try:
            tools = []
            status = self.apply_path(repo)
            # switch to directory where repo will be cloned to
            if status[0]:
                cwd = status[1]
            else:
                self.logger.info(
                    "apply_path failed. Exiting repo_tools with status: " +
                    str(status))
                return status
            self.branch = branch
            self.version = version

            status = self.checkout()
            if status[0]:
                tools = self._available_tools()
            else:
                self.logger.info(
                    "checkout failed. Exiting repo_tools with status: " +
                    str(status))
                return status
            try:
                os.chdir(cwd)
            except Exception as e:  # pragma: no cover
                self.logger.error("unable to change directory to: " +
                                  str(cwd) + " because: " + str(e))

            status = (True, tools)
        except Exception as e:
            self.logger.error("repo_tools failed with error: " + str(e))
            status = (False, e)

        self.logger.info("Status of repo_tools: " + str(status))
        self.logger.info("Finished: repo_tools")
        return status

    def clone(self, repo, user=None, pw=None):
        """ Clone the repository """
        self.logger.info("Starting: clone")
        self.logger.info("repo given: " + str(repo))
        self.logger.info("user given: " + str(user))
        status = (True, None)
        try:
            self.org = None
            self.name = None
            self.repo = repo

            # save current path
            cwd = os.getcwd()
            self.logger.info("current working directory: " + str(cwd))

            # rewrite repo for consistency
            if self.repo.endswith(".git"):
                self.repo = self.repo.split(".git")[0]

            # get org and repo name and path repo will be cloned to
            self.org, self.name = self.repo.split("/")[-2:]
            self.logger.info("org name found: " + str(self.org))
            self.logger.info("repo name found: " + str(self.name))
            self.path = os.path.join(self.path_dirs.plugins_dir, self.org,
                                     self.name)
            self.logger.info("path to clone to: " + str(self.path))

            # check if the directory exists, if so return now
            status = self.path_dirs.ensure_dir(self.path)
            if not status[0]:
                self.logger.info(
                    "ensure_dir failed. Exiting clone with status: " +
                    str(status))
                return status

            # set to new repo path
            os.chdir(self.path)

            # if path already exists, try git checkout to update
            if status[0] and status[1] == 'exists':
                try:
                    response = subprocess.check_output(
                        shlex.split("git -C " + self.path + " rev-parse"),
                        stderr=subprocess.STDOUT,
                        close_fds=True)
                    self.logger.info("path already exists: " + str(self.path))
                    status = (True, cwd)
                    self.logger.info("Status of clone: " + str(status))
                    self.logger.info("Finished: clone")
                    return status
                except Exception as e:  # pragma: no cover
                    self.logger.error("unable to checkout: " + str(path) +
                                      " because: " + str(e))
                    status = (False, e)
                    self.logger.info("Exiting clone with status: " +
                                     str(status))
                    return status

            # ensure cloning still works even if ssl is broken...probably should be improved
            response = subprocess.check_output(
                shlex.split("git config --global http.sslVerify false"),
                stderr=subprocess.STDOUT,
                close_fds=True)

            # check if user and pw were supplied, typically for private repos
            if user and pw:
                # only https is supported when using user/pw
                repo = 'https://' + user + ':' + pw + '@' + self.repo.split(
                    "https://")[-1]

            # clone repo and build tools
            response = subprocess.check_output(
                shlex.split("git clone --recursive " + repo + " ."),
                stderr=subprocess.STDOUT,
                close_fds=True)

            status = (True, cwd)
        except Exception as e:
            self.logger.error("clone failed with error: " + str(e))
            status = (False, e)
        self.logger.info("Status of clone: " + str(status))
        self.logger.info("Finished: clone")
        return status

    def add(self,
            repo,
            tools=None,
            overrides=None,
            version="HEAD",
            branch="master",
            build=True,
            user=None,
            pw=None,
            groups=None,
            version_alias=None,
            wild=None,
            remove_old=True,
            disable_old=True,
            limit_groups=None):
        """
        Adds a plugin of tool(s)
        tools is a list of tuples, where the pair is a tool name (path to
        Dockerfile) and version
          tools are for explicitly limiting which tools and versions
          (if version in tuple is '', then defaults to version)
        overrides is a list of tuples, where the pair is a tool name (path to
        Dockerfile) and a version
          overrides are for explicitly removing tools and overriding versions
          of tools (if version in tuple is '', then tool is removed, otherwise
          that tool is checked out at the specific version in the tuple)
        if tools and overrides are left as empty lists, then all tools in the
          repo are pulled down at the version and branch specified or defaulted
          to
        version is globally set for all tools, unless overridden in tools or
          overrides
        branch is globally set for all tools
        build is a boolean of whether or not to build the tools now
        user is the username for a private repo if needed
        pw is the password to go along with the username for a private repo
        groups is globally set for all tools
        version_alias is globally set for all tools and is a mapping from a
          friendly version tag to the real version commit ID
        wild lets you specify individual overrides for additional values in the
          tuple of tools or overrides.  wild is a list containing one or more
          of the following: branch, build, groups, version_alias
          the order of the items in the wild list will expect values to be
          tacked on in the same order to the tuple for tools and overrides in
          additional to the tool name and version
        remove_old lets you specify whether or not to remove previously found
          tools that match to ones being added currently (note does not stop
          currently running instances of the older version)
        disable_old lets you specify whether or not to disable previously found
          tools that match to ones being added currently (note does not stop
          currently running instances of the older version)
        limit_groups is a list of groups to build tools for that match group
          names in vent.template of each tool if exists
        Examples:
          repo=fe
            (get all tools from repo 'fe' at version 'HEAD' on branch 'master')
          repo=foo, version="3d1f", branch="foo"
            (get all tools from repo 'foo' at verion '3d1f' on branch 'foo')
          repo=foo, tools=[('bar', ''), ('baz', '1d32')]
            (get only 'bar' from repo 'foo' at version 'HEAD' on branch
            'master' and 'baz' from repo 'foo' at version '1d32' on branch
            'master', ignore all other tools in repo 'foo')
          repo=foo overrides=[('baz/bar', ''), ('.', '1c4e')], version='4fad'
            (get all tools from repo 'foo' at verion '4fad' on branch 'master'
            except 'baz/bar' and for tool '.' get version '1c4e')
          repo=foo tools=[('bar', '1a2d')], overrides=[('baz', 'f2a1')]
            (not a particularly useful example, but get 'bar' from 'foo' at
            version '1a2d' and get 'baz' from 'foo' at version 'f2a1' on branch
            'master', ignore all other tools)
        """
        # initialize and store class objects
        self.tools = tools
        self.overrides = overrides
        self.version = version
        self.branch = branch
        self.build = build
        self.groups = groups

        # TODO these need to be implemented
        self.version_alias = version_alias
        self.wild = wild
        self.remove_old = remove_old
        self.disable_old = disable_old
        self.limit_groups = limit_groups

        status = (True, None)
        status_code, cwd = self.clone(repo, user=user, pw=pw)
        status = self._build_tools(status_code)

        # set back to original path
        try:
            os.chdir(cwd)
        except Exception as e:  # pragma: no cover
            pass
        return status

    @ErrorHandler
    def builder(self,
                template,
                match_path,
                image_name,
                section,
                build=None,
                branch=None,
                version=None):
        """ Build tools """
        self.logger.info("Starting: builder")
        self.logger.info("install path: " + str(match_path))
        self.logger.info("image name: " + str(image_name))
        self.logger.info("build: " + str(build))
        self.logger.info("branch: " + str(branch))
        self.logger.info("version: " + str(version))
        if build:
            self.build = build
        elif not hasattr(self, 'build'):
            self.build = True
        if branch:
            self.branch = branch
        elif not hasattr(self, 'branch'):
            self.branch = 'master'
        if version:
            self.version = version
        elif not hasattr(self, 'version'):
            self.version = 'HEAD'
        cwd = os.getcwd()
        self.logger.info("current working directory: " + str(cwd))
        try:
            os.chdir(match_path)
        except Exception as e:
            self.logger.error("unable to change to directory: " +
                              str(match_path) + " because: " + str(e))
            return None
        template = self._build_image(template, match_path, image_name, section)
        try:
            os.chdir(cwd)
        except Exception as e:  # pragma: no cover
            self.logger.error("unable to change to directory: " + str(cwd) +
                              " because: " + str(e))
        self.logger.info("template of builder: " + str(template))
        self.logger.info("Finished: builder")
        return template

    def _build_tools(self, status):
        """
        Create list of tools, paths, and versions to be built and sends them to
        build_manifest
        """
        response = (True, None)
        # !! TODO implement features: wild, remove_old, disable_old, limit_groups

        # check result of clone, ensure successful or that it already exists
        if status:
            response = self.checkout()
            if response[0]:
                matches = []
                if self.tools is None and self.overrides is None:
                    # get all tools
                    matches = self._available_tools()
                elif self.tools is None:
                    # there's only something in overrides
                    # grab all the tools then apply overrides
                    matches = self._available_tools()
                    # !! TODO apply overrides to matches
                elif self.overrides is None:
                    # there's only something in tools
                    # only grab the tools specified
                    matches = self.get_tool_matches()
                else:
                    # both tools and overrides were specified
                    # grab only the tools specified, with the overrides applied
                    orig_matches = self.get_tool_matches()
                    matches = orig_matches
                    for override in self.overrides:
                        override_t = None
                        if override[0] == '.':
                            override_t = ('', override[1])
                        else:
                            override_t = override
                        for match in orig_matches:
                            if override_t[0] == match[0]:
                                matches.remove(match)
                                matches.append(override_t)
                if len(matches) > 0:
                    self._build_manifest(matches)
        else:
            response = (False, status)
        return response

    def get_tool_matches(self):
        """
        Get the tools paths and versions that were specified by self.tools and
        self.version
        """
        matches = []
        if not hasattr(self, 'tools'): self.tools = []
        if not hasattr(self, 'version'): self.version = 'HEAD'
        for tool in self.tools:
            match_version = self.version
            if tool[1] != '':
                match_version = tool[1]
            match = ''
            if tool[0].endswith('/'):
                match = tool[0][:-1]
            elif tool[0] != '.':
                match = tool[0]
            if not match.startswith('/') and match != '':
                match = '/' + match
            matches.append((match, match_version))
        return matches

    def _build_manifest(self, matches):
        """ Builds and writes the manifest for the tools being added """
        # !! TODO check for pre-existing that conflict with request and disable and/or remove image
        for match in matches:
            template = Template(template=self.manifest)
            # !! TODO check for special settings here first for the specific match
            self.version = match[1]
            response = self.checkout()
            if response[0]:
                section = self.org + ":" + self.name + ":" + match[
                    0] + ":" + self.branch + ":" + self.version
                match_path = self.path + match[0]
                image_name = self.org + "-" + self.name + "-"
                if match[0] != '':
                    # if tool is in a subdir, add that to the name of the image
                    image_name += '-'.join(match[0].split('/')[1:]) + "-"
                image_name += self.branch + ":" + self.version

                # check if the section already exists
                exists, options = template.section(section)
                previous_commit = None
                previous_commits = None
                head = False
                if exists:

                    for option in options:
                        # TODO check if tool name but a different version exists - then disable/remove if set
                        if option[0] == 'version' and option[1] == 'HEAD':
                            head = True
                        if option[0] == 'built' and option[1] == 'yes':
                            # !! TODO remove pre-existing image
                            pass
                        if option[0] == 'commit_id':
                            previous_commit = option[1]
                        if option[0] == 'previous_versions':
                            previous_commits = option[1]

                # !! TODO
                # check if section should be removed from config - i.e. all tools,
                # but new commit removed one that was in a previous commit

                # set template section and options for tool at version and branch
                template.add_section(section)
                template.set_option(section, "name", match[0].split('/')[-1])
                template.set_option(section, "namespace",
                                    self.org + '/' + self.name)
                template.set_option(section, "path", match_path)
                template.set_option(section, "repo", self.repo)
                template.set_option(section, "enabled", "yes")
                template.set_option(section, "branch", self.branch)
                template.set_option(section, "version", self.version)
                template.set_option(section, "last_updated",
                                    str(datetime.datetime.utcnow()) + " UTC")
                template.set_option(section, "image_name", image_name)
                vent_template = Template(
                    template=os.path.join(match_path, 'vent.template'))
                vent_status, response = vent_template.option("info", "name")
                if vent_status:
                    template.set_option(section, "link_name", response)
                else:
                    template.set_option(section, "link_name",
                                        match[0].split('/')[-1])
                commit_id = None
                if self.version == 'HEAD':
                    os.chdir(match_path)
                    commit_id = subprocess.check_output(
                        shlex.split("git rev-parse --short HEAD"),
                        stderr=subprocess.STDOUT,
                        close_fds=True).strip()
                    template.set_option(section, "commit_id", commit_id)
                if head:
                    # no need to store previous commits if not HEAD, since
                    # the version will always be the same commit ID
                    if previous_commit and previous_commit != commit_id:
                        if previous_commits and previous_commit not in previous_commits:
                            previous_commits = previous_commit + ',' + previous_commits
                        elif not previous_commits:
                            previous_commits = previous_commit
                    if previous_commits and previous_commits != commit_id:
                        template.set_option(section, "previous_versions",
                                            previous_commits)

                if self.version_alias:
                    template.set_option(section, "version_alias",
                                        self.version_alias)
                if self.groups:
                    template.set_option(section, "groups", self.groups)
                else:
                    vent_template = os.path.join(match_path, 'vent.template')
                    if os.path.exists(vent_template):
                        v_template = Template(template=vent_template)
                        groups = v_template.option("info", "groups")
                        if groups[0]:
                            template.set_option(section, "groups", groups[1])
                template = self._build_image(template, match_path, image_name,
                                             section)

            # write out configuration to the manifest file
            template.write_config()

        # reset to repo directory
        os.chdir(self.path)
        return

    def _build_image(self, template, match_path, image_name, section):
        """ Build docker images and store results in template """
        # !! TODO return status of whether it built successfully or not
        if self.build:
            try:
                os.chdir(match_path)
                # currently can't use docker-py because it doesn't support labels on images yet
                name = template.option(section, "name")
                groups = template.option(section, "groups")
                if groups[1] == "" or not groups[0]:
                    groups = (True, "none")
                if not name[0]:
                    name = (True, image_name)
                # pull if '/' in image_name, fallback to build
                pull = False
                if '/' in image_name:
                    try:
                        self.logger.info("Trying to pull " + image_name)
                        output = subprocess.check_output(
                            shlex.split("docker pull " + image_name),
                            stderr=subprocess.STDOUT,
                            close_fds=True)
                        self.logger.info("Pulling " + name[1] + "\n" +
                                         str(output))
                        for line in output.split('\n'):
                            if line.startswith("Digest: sha256:"):
                                image_id = line.split(
                                    "Digest: sha256:")[1][:12]
                        if image_id:
                            template.set_option(section, "built", "yes")
                            template.set_option(section, "image_id", image_id)
                            template.set_option(
                                section, "last_updated",
                                str(datetime.datetime.utcnow()) + " UTC")
                            status = (True, "Pulled " + image_name)
                            self.logger.info(str(status))
                        else:
                            template.set_option(section, "built", "failed")
                            template.set_option(
                                section, "last_updated",
                                str(datetime.datetime.utcnow()) + " UTC")
                            status = (False, "Failed to pull image " +
                                      str(output.split('\n')[-1]))
                            self.logger.warning(str(status))
                        pull = True
                    except Exception as e:  # pragma: no cover
                        self.logger.warning(
                            "Failed to pull image, going to build instead: " +
                            str(e))
                if not pull:
                    output = subprocess.check_output(shlex.split(
                        "docker build --label vent --label vent.name=" +
                        name[1] + " --label vent.groups=" + groups[1] +
                        " -t " + image_name + " ."),
                                                     stderr=subprocess.STDOUT,
                                                     close_fds=True)
                    self.logger.info("Building " + name[1] + "\n" +
                                     str(output))
                    image_id = ""
                    for line in output.split("\n"):
                        if line.startswith("Successfully built "):
                            image_id = line.split(
                                "Successfully built ")[1].strip()
                    template.set_option(section, "built", "yes")
                    template.set_option(section, "image_id", image_id)
                    template.set_option(
                        section, "last_updated",
                        str(datetime.datetime.utcnow()) + " UTC")
            except Exception as e:  # pragma: no cover
                self.logger.error("unable to build image: " + str(image_name) +
                                  " because: " + str(e))
                template.set_option(section, "built", "failed")
                template.set_option(section, "last_updated",
                                    str(datetime.datetime.utcnow()) + " UTC")
        else:
            template.set_option(section, "built", "no")
            template.set_option(section, "last_updated",
                                str(datetime.datetime.utcnow()) + " UTC")
        return template

    def _available_tools(self, groups=None):
        """
        Return list of possible tools in repo for the given version and branch
        """
        matches = []
        if not hasattr(self, 'path'): return matches
        if groups:
            groups = groups.split(",")
        for root, dirnames, filenames in os.walk(self.path):
            for filename in fnmatch.filter(filenames, 'Dockerfile'):
                # !! TODO deal with wild/etc.?
                if groups:
                    try:
                        template = Template(
                            template=os.path.join(root, 'vent.template'))
                        for group in groups:
                            template_groups = template.option("info", "groups")
                            if template_groups[0] and group in template_groups[
                                    1]:
                                matches.append(
                                    (root.split(self.path)[1], self.version))
                    except Exception as e:  # pragma: no cover
                        pass
                else:
                    matches.append((root.split(self.path)[1], self.version))
        return matches

    def checkout(self):
        """ Checkout a specific version and branch of a repo """
        if not hasattr(self, 'branch'): self.branch = 'master'
        if not hasattr(self, 'version'): self.version = 'HEAD'
        response = (True, None)
        try:
            status = subprocess.check_output(shlex.split("git checkout " +
                                                         self.branch),
                                             stderr=subprocess.STDOUT,
                                             close_fds=True)
            status = subprocess.check_output(shlex.split("git pull"),
                                             stderr=subprocess.STDOUT,
                                             close_fds=True)
            status = subprocess.check_output(shlex.split("git reset --hard " +
                                                         self.version),
                                             stderr=subprocess.STDOUT,
                                             close_fds=True)
            response = (True, status)
        except Exception as e:  # pragma: no cover
            response = (False, os.getcwd() + str(e))
        return response

    @staticmethod
    def add_image(image, tag="latest"):
        """
        Add an image from a registry/hub rather than building from a
        repository
        """
        # !! TODO
        return

    def constraint_options(self, constraint_dict, options):
        """ Return result of constraints and options against a template """
        constraints = {}
        template = Template(template=self.manifest)
        for constraint in constraint_dict:
            if constraint != 'self':
                if constraint_dict[constraint] or constraint_dict[
                        constraint] == '':
                    constraints[constraint] = constraint_dict[constraint]
        results = template.constrained_sections(constraints=constraints,
                                                options=options)
        return results, template

    def tools(self):
        """ Return list of tuples of all tools """
        tools = []
        template = Template(template=self.manifest)
        exists, sections = template.sections()
        if exists:
            for section in sections:
                options = {
                    'section': section,
                    'enabled': None,
                    'built': None,
                    'version': None,
                    'repo': None,
                    'branch': None,
                    'name': None,
                    'groups': None,
                    'image_name': None
                }
                for option in options.keys():
                    exists, value = template.option(section, option)
                    if exists:
                        options[option] = value
                tools.append(options)
        return tools

    def remove(self,
               name=None,
               repo=None,
               namespace=None,
               branch="master",
               groups=None,
               enabled="yes",
               version="HEAD",
               built="yes"):
        """
        Remove tool (name) or repository, repository is the url. If no
        arguments are specified, all tools will be removed for the defaults.
        """
        # initialize
        args = locals()
        status = (True, None)

        # get resulting dictionary of sections with options that match constraints
        results, template = self.constraint_options(args, [])
        for result in results:
            response, image_name = template.option(result, 'image_name')

            # check for container and remove
            container_name = image_name.replace(':', '-').replace('/', '-')
            try:
                container = self.d_client.containers.get(container_name)
                response = container.remove(v=True, force=True)
                self.logger.info(response)
                self.logger.info("Removing plugin container: " +
                                 container_name)
            except Exception as e:  # pragma: no cover
                self.logger.warn("Unable to remove the plugin container: " +
                                 container_name + " because: " + str(e))

            # check for image and remove
            try:
                response = self.d_client.images.remove(image_name)
                self.logger.info(response)
                self.logger.info("Removing plugin image: " + image_name)
            except Exception as e:  # pragma: no cover
                self.logger.warn("Unable to remove the plugin image: " +
                                 image_name + " because: " + str(e))

            # remove tool from the manifest
            status = template.del_section(result)
            self.logger.info("Removing plugin tool: " + result)
        # TODO if all tools from a repo have been removed, remove the repo
        template.write_config()
        return status

    def update(self,
               name=None,
               repo=None,
               namespace=None,
               branch=None,
               groups=None):
        """
        Update tool (name) or repository, repository is the url. If no
        arguments are specified, all tools will be updated
        """
        # initialize
        args = locals()
        status = (False, None)
        options = ['branch', 'groups', 'image_name']

        # get resulting dictionary of sections with options that match constraints
        results, template = self.constraint_options(args, options)
        for result in results:
            # check for container and remove
            try:
                container_name = results['image_name'].replace(':', '-') \
                                                      .replace('/', '-')
                container = self.d_client.containers.get(container_name)
                response = container.remove(v=True, force=True)
            except Exception as e:  # pragma: no cover
                pass

            # TODO git pull
            # TODO build
            # TODO docker pull
            # TODO update tool in the manifest

            self.logger.info("Updating plugin tool: " + result)
        template.write_config()
        return status

    # !! TODO name or group ?
    def versions(self, name, namespace=None, branch="master"):
        """ Return available versions of a tool """
        # initialize
        args = locals()
        versions = []
        options = ['version', 'previous_versions']

        # get resulting dictionary of sections with options that match constraints
        results, _ = self.constraint_options(args, options)
        for result in results:
            version_list = [results[result]['version']]
            if 'previous_versions' in results[result]:
                version_list = version_list + (
                    results[result]['previous_versions']).split(',')
            versions.append((result, version_list))
        return versions

    # !! TODO name or group ?
    def current_version(self, name, namespace=None, branch="master"):
        """ Return current version for a given tool """
        # initialize
        args = locals()
        versions = []
        options = ['version']

        # get resulting dictionary of sections with options that match constraints
        results, _ = self.constraint_options(args, options)
        for result in results:
            versions.append((result, results[result]['version']))
        return versions

    # !! TODO name or group ?
    def state(self, name, namespace=None, branch="master"):
        """ Return state of a tool, disabled/enabled for each version """
        # initialize
        args = locals()
        states = []
        options = ['enabled']

        # get resulting dictionary of sections with options that match constraints
        results, _ = self.constraint_options(args, options)
        for result in results:
            if results[result]['enabled'] == 'yes':
                states.append((result, 'enabled'))
            else:
                states.append((result, 'disabled'))
        return states

    # !! TODO name or group ?
    def enable(self, name, namespace=None, branch="master", version="HEAD"):
        """ Enable tool at a specific version, default to head """
        # initialize
        args = locals()
        status = (False, None)

        # get resulting dictionary of sections with options that match constraints
        results, template = self.constraint_options(args, [])
        for result in results:
            status = template.set_option(result, 'enabled', 'yes')
        template.write_config()
        return status

    # !! TODO name or group ?
    def disable(self, name, namespace=None, branch="master", version="HEAD"):
        """ Disable tool at a specific version, default to head """
        # initialize
        args = locals()
        status = (False, None)

        # get resulting dictionary of sections with options that match constraints
        results, template = self.constraint_options(args, [])
        for result in results:
            status = template.set_option(result, 'enabled', 'no')
        template.write_config()
        return status
示例#3
0
class Plugin:
    """ Handle Plugins """
    def __init__(self, **kargs):
        self.path_dirs = PathDirs(**kargs)
        self.manifest = os.path.join(self.path_dirs.meta_dir,
                                     "plugin_manifest.cfg")
        self.d_client = docker.from_env()
        self.logger = Logger(__name__)

    def apply_path(self, repo):
        """ Set path to where the repo is and return original path """
        self.logger.info("Starting: apply_path")
        self.logger.info("repo given: "+str(repo))
        status = (True, None)
        try:
            # rewrite repo for consistency
            if repo.endswith(".git"):
                repo = repo.split(".git")[0]

            # get org and repo name and path repo will be cloned to
            org, name = repo.split("/")[-2:]
            self.path = os.path.join(self.path_dirs.plugins_dir, org, name)
            self.logger.info("cloning to path: "+str(self.path))

            # save current path
            cwd = os.getcwd()
            # set to new repo path
            os.chdir(self.path)
            status = (True, cwd)
        except Exception as e:
            self.logger.error("apply_path failed with error: "+str(e))
            status = (False, e)
        self.logger.info("Status of apply_path: "+str(status))
        self.logger.info("Finished: apply_path")
        return status

    def repo_branches(self, repo):
        """ Get the branches of a repository """
        self.logger.info("Starting: repo_branches")
        self.logger.info("repo given: "+str(repo))
        status = (True, None)
        branches = []
        try:
            # switch to directory where repo will be cloned to
            status = self.apply_path(repo)
            if status[0]:
                cwd = status[1]
            else:
                self.logger.info("apply_path failed. Exiting repo_branches with status "+str(status))
                return status

            junk = subprocess.check_output(shlex.split("git pull --all"), stderr=subprocess.STDOUT, close_fds=True)
            branch_output = subprocess.check_output(shlex.split("git branch -a"), stderr=subprocess.STDOUT, close_fds=True)
            branch_output = branch_output.split("\n")
            for branch in branch_output:
                b = branch.strip()
                if b.startswith('*'):
                    b = b[2:]
                if "/" in b:
                    branches.append(b.rsplit('/', 1)[1])
                elif b:
                    branches.append(b)

            branches = list(set(branches))
            self.logger.info("branches found: "+str(branches))
            for branch in branches:
                try:
                    junk = subprocess.check_output(shlex.split("git checkout " + branch), stderr=subprocess.STDOUT, close_fds=True)
                except Exception as e:  # pragma: no cover
                    self.logger.error("repo_branches failed with error: "+str(e)+" on branch: "+str(branch))
                    status = (False, e)
                    self.logger.info("Exiting repo_branches with status: "+str(status))
                    return status

            try:
                os.chdir(cwd)
            except Exception as e:  # pragma: no cover
                self.logger.error("unable to change directory to: "+str(cwd)+"because: "+str(e))

            status = (True, branches)
        except Exception as e:
            self.logger.error("repo_branches failed with error: "+str(e))
            status = (False, e)

        self.logger.info("Status of repo_branches: "+str(status))
        self.logger.info("Finished: repo_branches")
        return status

    def repo_commits(self, repo):
        """ Get the commit IDs for all of the branches of a repository """
        self.logger.info("Starting: repo_commits")
        self.logger.info("repo given: "+str(repo))
        status = (True, None)
        commits = []
        try:
            status = self.apply_path(repo)
            # switch to directory where repo will be cloned to
            if status[0]:
                cwd = status[1]
            else:
                self.logger.info("apply_path failed. Exiting repo_commits with status: "+str(status))
                return status

            status = self.repo_branches(repo)
            if status[0]:
                branches = status[1]
                for branch in branches:
                    try:
                        branch_output = subprocess.check_output(shlex.split("git rev-list " + branch), stderr=subprocess.STDOUT, close_fds=True)
                        branch_output = ['HEAD'] + branch_output.split("\n")[:-1]
                        commits.append((branch, branch_output))
                    except Exception as e:  # pragma: no cover
                        self.logger.error("repo_commits failed with error: "+str(e)+" on branch: "+str(branch))
                        status = (False, e)
                        self.logger.info("Exiting repo_commits with status: "+str(status))
                        return status
            else:
                self.logger.info("repo_branches failed. Exiting repo_commits with status: "+str(status))
                return status
            try:
                os.chdir(cwd)
            except Exception as e:  # pragma: no cover
                self.logger.error("unable to change directory to: "+str(cwd)+" because: "+str(e))

            status = (True, commits)
        except Exception as e:
            self.logger.error("repo_commits failed with error: "+str(e))
            status = (False, e)

        self.logger.info("Status of repo_commits: "+str(status))
        self.logger.info("Finished: repo_commits")
        return status

    def repo_tools(self, repo, branch, version):
        """ Get available tools for a repository branch at a version """
        self.logger.info("Starting: repo_tools")
        self.logger.info("repo given: "+str(repo))
        self.logger.info("branch given: "+str(branch))
        self.logger.info("version given: "+str(version))
        status = (True, None)
        try:
            tools = []
            status = self.apply_path(repo)
            # switch to directory where repo will be cloned to
            if status[0]:
                cwd = status[1]
            else:
                self.logger.info("apply_path failed. Exiting repo_tools with status: "+str(status))
                return status
            self.branch = branch
            self.version = version

            status = self.checkout()
            if status[0]:
                tools = self._available_tools()
            else:
                self.logger.info("checkout failed. Exiting repo_tools with status: "+str(status))
                return status
            try:
                os.chdir(cwd)
            except Exception as e:  # pragma: no cover
                self.logger.error("unable to change directory to: "+str(cwd)+" because: "+str(e))

            status = (True, tools)
        except Exception as e:
            self.logger.error("repo_tools failed with error: "+str(e))
            status = (False, e)

        self.logger.info("Status of repo_tools: "+str(status))
        self.logger.info("Finished: repo_tools")
        return status

    def clone(self, repo, user=None, pw=None):
        """ Clone the repository """
        self.logger.info("Starting: clone")
        self.logger.info("repo given: "+str(repo))
        self.logger.info("user given: "+str(user))
        status = (True, None)
        try:
            self.org = None
            self.name = None
            self.repo = repo

            # save current path
            cwd = os.getcwd()
            self.logger.info("current working directory: "+str(cwd))

            # rewrite repo for consistency
            if self.repo.endswith(".git"):
                self.repo = self.repo.split(".git")[0]

            # get org and repo name and path repo will be cloned to
            self.org, self.name = self.repo.split("/")[-2:]
            self.logger.info("org name found: "+str(self.org))
            self.logger.info("repo name found: "+str(self.name))
            self.path = os.path.join(self.path_dirs.plugins_dir, self.org, self.name)
            self.logger.info("path to clone to: "+str(self.path))

            # check if the directory exists, if so return now
            status = self.path_dirs.ensure_dir(self.path)
            if not status[0]:
                self.logger.info("ensure_dir failed. Exiting clone with status: "+str(status))
                return status

            # set to new repo path
            os.chdir(self.path)

            # if path already exists, try git checkout to update
            if status[0] and status[1] == 'exists':
                try:
                    response = subprocess.check_output(shlex.split("git -C "+self.path+" rev-parse"), stderr=subprocess.STDOUT, close_fds=True)
                    self.logger.info("path already exists: "+str(self.path))
                    status = (True, cwd)
                    self.logger.info("Status of clone: "+str(status))
                    self.logger.info("Finished: clone")
                    return status
                except Exception as e:  # pragma: no cover
                    self.logger.error("unable to checkout: "+str(path)+" because: "+str(e))
                    status = (False, e)
                    self.logger.info("Exiting clone with status: "+str(status))
                    return status

            # ensure cloning still works even if ssl is broken...probably should be improved
            response = subprocess.check_output(shlex.split("git config --global http.sslVerify false"), stderr=subprocess.STDOUT, close_fds=True)

            # check if user and pw were supplied, typically for private repos
            if user and pw:
                # only https is supported when using user/pw
                repo = 'https://'+user+':'+pw+'@'+self.repo.split("https://")[-1]

            # clone repo and build tools
            response = subprocess.check_output(shlex.split("git clone --recursive " + repo + " ."), stderr=subprocess.STDOUT, close_fds=True)

            status = (True, cwd)
        except Exception as e:
            self.logger.error("clone failed with error: "+str(e))
            status = (False, e)
        self.logger.info("Status of clone: "+str(status))
        self.logger.info("Finished: clone")
        return status

    def add(self, repo, tools=None, overrides=None, version="HEAD",
            branch="master", build=True, user=None, pw=None, groups=None,
            version_alias=None, wild=None, remove_old=True, disable_old=True,
            limit_groups=None):
        """
        Adds a plugin of tool(s)
        tools is a list of tuples, where the pair is a tool name (path to
        Dockerfile) and version
          tools are for explicitly limiting which tools and versions
          (if version in tuple is '', then defaults to version)
        overrides is a list of tuples, where the pair is a tool name (path to
        Dockerfile) and a version
          overrides are for explicitly removing tools and overriding versions
          of tools (if version in tuple is '', then tool is removed, otherwise
          that tool is checked out at the specific version in the tuple)
        if tools and overrides are left as empty lists, then all tools in the
          repo are pulled down at the version and branch specified or defaulted
          to
        version is globally set for all tools, unless overridden in tools or
          overrides
        branch is globally set for all tools
        build is a boolean of whether or not to build the tools now
        user is the username for a private repo if needed
        pw is the password to go along with the username for a private repo
        groups is globally set for all tools
        version_alias is globally set for all tools and is a mapping from a
          friendly version tag to the real version commit ID
        wild lets you specify individual overrides for additional values in the
          tuple of tools or overrides.  wild is a list containing one or more
          of the following: branch, build, groups, version_alias
          the order of the items in the wild list will expect values to be
          tacked on in the same order to the tuple for tools and overrides in
          additional to the tool name and version
        remove_old lets you specify whether or not to remove previously found
          tools that match to ones being added currently (note does not stop
          currently running instances of the older version)
        disable_old lets you specify whether or not to disable previously found
          tools that match to ones being added currently (note does not stop
          currently running instances of the older version)
        limit_groups is a list of groups to build tools for that match group
          names in vent.template of each tool if exists
        Examples:
          repo=fe
            (get all tools from repo 'fe' at version 'HEAD' on branch 'master')
          repo=foo, version="3d1f", branch="foo"
            (get all tools from repo 'foo' at verion '3d1f' on branch 'foo')
          repo=foo, tools=[('bar', ''), ('baz', '1d32')]
            (get only 'bar' from repo 'foo' at version 'HEAD' on branch
            'master' and 'baz' from repo 'foo' at version '1d32' on branch
            'master', ignore all other tools in repo 'foo')
          repo=foo overrides=[('baz/bar', ''), ('.', '1c4e')], version='4fad'
            (get all tools from repo 'foo' at verion '4fad' on branch 'master'
            except 'baz/bar' and for tool '.' get version '1c4e')
          repo=foo tools=[('bar', '1a2d')], overrides=[('baz', 'f2a1')]
            (not a particularly useful example, but get 'bar' from 'foo' at
            version '1a2d' and get 'baz' from 'foo' at version 'f2a1' on branch
            'master', ignore all other tools)
        """
        # initialize and store class objects
        self.tools = tools
        self.overrides = overrides
        self.version = version
        self.branch = branch
        self.build = build
        self.groups = groups

        # TODO these need to be implemented
        self.version_alias = version_alias
        self.wild = wild
        self.remove_old = remove_old
        self.disable_old = disable_old
        self.limit_groups = limit_groups

        status = (True, None)
        status_code, cwd = self.clone(repo, user=user, pw=pw)
        status = self._build_tools(status_code)

        # set back to original path
        try:
            os.chdir(cwd)
        except Exception as e:  # pragma: no cover
            pass
        return status

    @ErrorHandler
    def builder(self, template, match_path, image_name, section, build=None,
              branch=None, version=None):
        """ Build tools """
        self.logger.info("Starting: builder")
        self.logger.info("install path: "+str(match_path))
        self.logger.info("image name: "+str(image_name))
        self.logger.info("build: "+str(build))
        self.logger.info("branch: "+str(branch))
        self.logger.info("version: "+str(version))
        if build:
            self.build = build
        elif not hasattr(self, 'build'): self.build = True
        if branch:
            self.branch = branch
        elif not hasattr(self, 'branch'): self.branch = 'master'
        if version:
            self.version = version
        elif not hasattr(self, 'version'): self.version = 'HEAD'
        cwd = os.getcwd()
        self.logger.info("current working directory: "+str(cwd))
        try:
            os.chdir(match_path)
        except Exception as e:
            self.logger.error("unable to change to directory: "+str(match_path)+" because: "+str(e))
            return None
        template = self._build_image(template, match_path, image_name, section)
        try:
            os.chdir(cwd)
        except Exception as e:  # pragma: no cover
            self.logger.error("unable to change to directory: "+str(cwd)+" because: "+str(e))
        self.logger.info("template of builder: "+str(template))
        self.logger.info("Finished: builder")
        return template

    def _build_tools(self, status):
        """
        Create list of tools, paths, and versions to be built and sends them to
        build_manifest
        """
        response = (True, None)
        # !! TODO implement features: wild, remove_old, disable_old, limit_groups

        # check result of clone, ensure successful or that it already exists
        if status:
            response = self.checkout()
            if response[0]:
                matches = []
                if self.tools is None and self.overrides is None:
                    # get all tools
                    matches = self._available_tools()
                elif self.tools is None:
                    # there's only something in overrides
                    # grab all the tools then apply overrides
                    matches = self._available_tools()
                    # !! TODO apply overrides to matches
                elif self.overrides is None:
                    # there's only something in tools
                    # only grab the tools specified
                    matches = self.get_tool_matches()
                else:
                    # both tools and overrides were specified
                    # grab only the tools specified, with the overrides applied
                    orig_matches = self.get_tool_matches()
                    matches = orig_matches
                    for override in self.overrides:
                        override_t = None
                        if override[0] == '.':
                            override_t = ('', override[1])
                        else:
                            override_t = override
                        for match in orig_matches:
                            if override_t[0] == match[0]:
                                matches.remove(match)
                                matches.append(override_t)
                if len(matches) > 0:
                    self._build_manifest(matches)
        else:
            response = (False, status)
        return response

    def get_tool_matches(self):
        """
        Get the tools paths and versions that were specified by self.tools and
        self.version
        """
        matches = []
        if not hasattr(self, 'tools'): self.tools = []
        if not hasattr(self, 'version'): self.version = 'HEAD'
        for tool in self.tools:
            match_version = self.version
            if tool[1] != '':
                match_version = tool[1]
            match = ''
            if tool[0].endswith('/'):
                match = tool[0][:-1]
            elif tool[0] != '.':
                match = tool[0]
            if not match.startswith('/') and match != '':
                match = '/'+match
            matches.append((match, match_version))
        return matches

    def _build_manifest(self, matches):
        """ Builds and writes the manifest for the tools being added """
        # !! TODO check for pre-existing that conflict with request and disable and/or remove image
        for match in matches:
            template = Template(template=self.manifest)
            # !! TODO check for special settings here first for the specific match
            self.version = match[1]
            response = self.checkout()
            if response[0]:
                section = self.org + ":" + self.name + ":" + match[0] + ":" + self.branch + ":" + self.version
                match_path = self.path + match[0]
                image_name = self.org + "-" + self.name + "-"
                if match[0] != '':
                    # if tool is in a subdir, add that to the name of the image
                    image_name += '-'.join(match[0].split('/')[1:]) + "-"
                image_name += self.branch + ":" + self.version

                # check if the section already exists
                exists, options = template.section(section)
                previous_commit = None
                previous_commits = None
                head = False
                if exists:

                    for option in options:
                        # TODO check if tool name but a different version exists - then disable/remove if set
                        if option[0] == 'version' and option[1] == 'HEAD':
                            head = True
                        if option[0] == 'built' and option[1] == 'yes':
                            # !! TODO remove pre-existing image
                            pass
                        if option[0] == 'commit_id':
                            previous_commit = option[1]
                        if option[0] == 'previous_versions':
                            previous_commits = option[1]

                # !! TODO
                # check if section should be removed from config - i.e. all tools,
                # but new commit removed one that was in a previous commit

                # set template section and options for tool at version and branch
                template.add_section(section)
                template.set_option(section, "name", match[0].split('/')[-1])
                template.set_option(section, "namespace", self.org+'/'+self.name)
                template.set_option(section, "path", match_path)
                template.set_option(section, "repo", self.repo)
                template.set_option(section, "enabled", "yes")
                template.set_option(section, "branch", self.branch)
                template.set_option(section, "version", self.version)
                template.set_option(section, "last_updated", str(datetime.datetime.utcnow()) + " UTC")
                template.set_option(section, "image_name", image_name)
                vent_template = Template(template=os.path.join(match_path, 'vent.template'))
                vent_status, response = vent_template.option("info", "name")
                if vent_status:
                    template.set_option(section, "link_name", response)
                else:
                    template.set_option(section, "link_name", match[0].split('/')[-1])
                commit_id = None
                if self.version == 'HEAD':
                    os.chdir(match_path)
                    commit_id = subprocess.check_output(shlex.split("git rev-parse --short HEAD"), stderr=subprocess.STDOUT, close_fds=True).strip()
                    template.set_option(section, "commit_id", commit_id)
                if head:
                    # no need to store previous commits if not HEAD, since
                    # the version will always be the same commit ID
                    if previous_commit and previous_commit != commit_id:
                        if previous_commits and previous_commit not in previous_commits:
                            previous_commits = previous_commit+','+previous_commits
                        elif not previous_commits:
                            previous_commits = previous_commit
                    if previous_commits and previous_commits != commit_id:
                        template.set_option(section, "previous_versions", previous_commits)

                if self.version_alias:
                    template.set_option(section, "version_alias", self.version_alias)
                if self.groups:
                    template.set_option(section, "groups", self.groups)
                else:
                    vent_template = os.path.join(match_path, 'vent.template')
                    if os.path.exists(vent_template):
                        v_template = Template(template=vent_template)
                        groups = v_template.option("info", "groups")
                        if groups[0]:
                            template.set_option(section, "groups", groups[1])
                template = self._build_image(template, match_path, image_name, section)

            # write out configuration to the manifest file
            template.write_config()

        # reset to repo directory
        os.chdir(self.path)
        return

    def _build_image(self, template, match_path, image_name, section):
        """ Build docker images and store results in template """
        # !! TODO return status of whether it built successfully or not
        if self.build:
            try:
                os.chdir(match_path)
                # currently can't use docker-py because it doesn't support labels on images yet
                name = template.option(section, "name")
                groups = template.option(section, "groups")
                if groups[1] == "" or not groups[0]:
                    groups = (True, "none")
                if not name[0]:
                    name = (True, image_name)
                # pull if '/' in image_name, fallback to build
                pull = False
                if '/' in image_name:
                    try:
                        self.logger.info("Trying to pull "+image_name)
                        output = subprocess.check_output(shlex.split("docker pull "+image_name), stderr=subprocess.STDOUT, close_fds=True)
                        self.logger.info("Pulling "+name[1]+"\n"+str(output))
                        for line in output.split('\n'):
                            if line.startswith("Digest: sha256:"):
                                image_id = line.split("Digest: sha256:")[1][:12]
                        if image_id:
                            template.set_option(section, "built", "yes")
                            template.set_option(section, "image_id", image_id)
                            template.set_option(section, "last_updated", str(datetime.datetime.utcnow()) + " UTC")
                            status = (True, "Pulled "+image_name)
                            self.logger.info(str(status))
                        else:
                            template.set_option(section, "built", "failed")
                            template.set_option(section, "last_updated", str(datetime.datetime.utcnow()) + " UTC")
                            status = (False, "Failed to pull image "+str(output.split('\n')[-1]))
                            self.logger.warning(str(status))
                        pull = True
                    except Exception as e:  # pragma: no cover
                        self.logger.warning("Failed to pull image, going to build instead: "+str(e))
                if not pull:
                    output = subprocess.check_output(shlex.split("docker build --label vent --label vent.name="+name[1]+" --label vent.groups="+groups[1]+" -t " + image_name + " ."), stderr=subprocess.STDOUT, close_fds=True)
                    self.logger.info("Building "+name[1]+"\n"+str(output))
                    image_id = ""
                    for line in output.split("\n"):
                        if line.startswith("Successfully built "):
                            image_id = line.split("Successfully built ")[1].strip()
                    template.set_option(section, "built", "yes")
                    template.set_option(section, "image_id", image_id)
                    template.set_option(section, "last_updated", str(datetime.datetime.utcnow()) + " UTC")
            except Exception as e:  # pragma: no cover
                self.logger.error("unable to build image: "+str(image_name)+" because: "+str(e))
                template.set_option(section, "built", "failed")
                template.set_option(section, "last_updated", str(datetime.datetime.utcnow()) + " UTC")
        else:
            template.set_option(section, "built", "no")
            template.set_option(section, "last_updated", str(datetime.datetime.utcnow()) + " UTC")
        return template

    def _available_tools(self, groups=None):
        """
        Return list of possible tools in repo for the given version and branch
        """
        matches = []
        if not hasattr(self, 'path'): return matches
        if groups:
            groups = groups.split(",")
        for root, dirnames, filenames in os.walk(self.path):
            for filename in fnmatch.filter(filenames, 'Dockerfile'):
                # !! TODO deal with wild/etc.?
                if groups:
                    try:
                        template = Template(template=os.path.join(root, 'vent.template'))
                        for group in groups:
                            template_groups = template.option("info", "groups")
                            if template_groups[0] and group in template_groups[1]:
                                matches.append((root.split(self.path)[1], self.version))
                    except Exception as e:  # pragma: no cover
                        pass
                else:
                    matches.append((root.split(self.path)[1], self.version))
        return matches

    def checkout(self):
        """ Checkout a specific version and branch of a repo """
        if not hasattr(self, 'branch'): self.branch = 'master'
        if not hasattr(self, 'version'): self.version = 'HEAD'
        response = (True, None)
        try:
            status = subprocess.check_output(shlex.split("git checkout " + self.branch), stderr=subprocess.STDOUT, close_fds=True)
            status = subprocess.check_output(shlex.split("git pull"), stderr=subprocess.STDOUT, close_fds=True)
            status = subprocess.check_output(shlex.split("git reset --hard " + self.version), stderr=subprocess.STDOUT, close_fds=True)
            response = (True, status)
        except Exception as e:  # pragma: no cover
            response = (False, os.getcwd()+str(e))
        return response

    @staticmethod
    def add_image(image, tag="latest"):
        """
        Add an image from a registry/hub rather than building from a
        repository
        """
        # !! TODO
        return

    def constraint_options(self, constraint_dict, options):
        """ Return result of constraints and options against a template """
        constraints = {}
        template = Template(template=self.manifest)
        for constraint in constraint_dict:
            if constraint != 'self':
                if constraint_dict[constraint] or constraint_dict[constraint] == '':
                    constraints[constraint] = constraint_dict[constraint]
        results = template.constrained_sections(constraints=constraints, options=options)
        return results, template

    def tools(self):
        """ Return list of tuples of all tools """
        tools = []
        template = Template(template=self.manifest)
        exists, sections = template.sections()
        if exists:
            for section in sections:
                options = {'section':section,
                           'enabled':None,
                           'built':None,
                           'version':None,
                           'repo':None,
                           'branch':None,
                           'name':None,
                           'groups':None,
                           'image_name':None}
                for option in options.keys():
                    exists, value = template.option(section, option)
                    if exists:
                        options[option] = value
                tools.append(options)
        return tools

    def remove(self, name=None, repo=None, namespace=None, branch="master",
               groups=None, enabled="yes", version="HEAD", built="yes"):
        """
        Remove tool (name) or repository, repository is the url. If no
        arguments are specified, all tools will be removed for the defaults.
        """
        # initialize
        args = locals()
        status = (True, None)

        # get resulting dictionary of sections with options that match constraints
        results, template = self.constraint_options(args, [])
        for result in results:
            response, image_name = template.option(result, 'image_name')

            # check for container and remove
            container_name = image_name.replace(':', '-').replace('/', '-')
            try:
                container = self.d_client.containers.get(container_name)
                response = container.remove(v=True, force=True)
                self.logger.info(response)
                self.logger.info("Removing plugin container: "+container_name)
            except Exception as e:  # pragma: no cover
                self.logger.warn("Unable to remove the plugin container: " +
                                 container_name + " because: " + str(e))

            # check for image and remove
            try:
                response = self.d_client.images.remove(image_name)
                self.logger.info(response)
                self.logger.info("Removing plugin image: "+image_name)
            except Exception as e:  # pragma: no cover
                self.logger.warn("Unable to remove the plugin image: " +
                                 image_name + " because: " + str(e))

            # remove tool from the manifest
            status = template.del_section(result)
            self.logger.info("Removing plugin tool: "+result)
        # TODO if all tools from a repo have been removed, remove the repo
        template.write_config()
        return status

    def update(self, name=None, repo=None, namespace=None, branch=None, groups=None):
        """
        Update tool (name) or repository, repository is the url. If no
        arguments are specified, all tools will be updated
        """
        # initialize
        args = locals()
        status = (False, None)
        options = ['branch', 'groups', 'image_name']

        # get resulting dictionary of sections with options that match constraints
        results, template = self.constraint_options(args, options)
        for result in results:
            # check for container and remove
            try:
                container_name = results['image_name'].replace(':', '-') \
                                                      .replace('/', '-')
                container = self.d_client.containers.get(container_name)
                response = container.remove(v=True, force=True)
            except Exception as e:  # pragma: no cover
                pass

            # TODO git pull
            # TODO build
            # TODO docker pull
            # TODO update tool in the manifest

            self.logger.info("Updating plugin tool: "+result)
        template.write_config()
        return status

    # !! TODO name or group ?
    def versions(self, name, namespace=None, branch="master"):
        """ Return available versions of a tool """
        # initialize
        args = locals()
        versions = []
        options = ['version', 'previous_versions']

        # get resulting dictionary of sections with options that match constraints
        results, _ = self.constraint_options(args, options)
        for result in results:
            version_list = [results[result]['version']]
            if 'previous_versions' in results[result]:
                version_list = version_list+(results[result]['previous_versions']).split(',')
            versions.append((result, version_list))
        return versions

    # !! TODO name or group ?
    def current_version(self, name, namespace=None, branch="master"):
        """ Return current version for a given tool """
        # initialize
        args = locals()
        versions = []
        options = ['version']

        # get resulting dictionary of sections with options that match constraints
        results, _ = self.constraint_options(args, options)
        for result in results:
            versions.append((result, results[result]['version']))
        return versions

    # !! TODO name or group ?
    def state(self, name, namespace=None, branch="master"):
        """ Return state of a tool, disabled/enabled for each version """
        # initialize
        args = locals()
        states = []
        options = ['enabled']

        # get resulting dictionary of sections with options that match constraints
        results, _ = self.constraint_options(args, options)
        for result in results:
            if results[result]['enabled'] == 'yes':
                states.append((result, 'enabled'))
            else:
                states.append((result, 'disabled'))
        return states

    # !! TODO name or group ?
    def enable(self, name, namespace=None, branch="master", version="HEAD"):
        """ Enable tool at a specific version, default to head """
        # initialize
        args = locals()
        status = (False, None)

        # get resulting dictionary of sections with options that match constraints
        results, template = self.constraint_options(args, [])
        for result in results:
            status = template.set_option(result, 'enabled', 'yes')
        template.write_config()
        return status

    # !! TODO name or group ?
    def disable(self, name, namespace=None, branch="master", version="HEAD"):
        """ Disable tool at a specific version, default to head """
        # initialize
        args = locals()
        status = (False, None)

        # get resulting dictionary of sections with options that match constraints
        results, template = self.constraint_options(args, [])
        for result in results:
            status = template.set_option(result, 'enabled', 'no')
        template.write_config()
        return status
示例#4
0
class PluginHelper:
    """ Handle helper functions for the Plugin class """
    def __init__(self, **kargs):
        self.d_client = docker.from_env()
        self.path_dirs = PathDirs(**kargs)
        self.manifest = join(self.path_dirs.meta_dir,
                             "plugin_manifest.cfg")
        self.logger = Logger(__name__)

    def constraint_options(self, constraint_dict, options):
        """ Return result of constraints and options against a template """
        constraints = {}
        template = Template(template=self.manifest)
        for constraint in constraint_dict:
            if constraint != 'self':
                if (constraint_dict[constraint] or
                   constraint_dict[constraint] == ''):
                    constraints[constraint] = constraint_dict[constraint]
        results = template.constrained_sections(constraints=constraints,
                                                options=options)
        return results, template

    def get_path(self, repo, core=False):
        """ Return the path for the repo """
        if repo.endswith(".git"):
            repo = repo.split(".git")[0]
        org, name = repo.split("/")[-2:]
        path = self.path_dirs.plugins_dir
        path = join(path, org, name)
        return path, org, name

    def apply_path(self, repo):
        """ Set path to where the repo is and return original path """
        self.logger.info("Starting: apply_path")
        self.logger.info("repo given: " + str(repo))
        try:
            # rewrite repo for consistency
            if repo.endswith(".git"):
                repo = repo.split(".git")[0]

            # get org and repo name and path repo will be cloned to
            org, name = repo.split("/")[-2:]
            path = join(self.path_dirs.plugins_dir, org, name)
            self.logger.info("cloning to path: " + str(path))

            # save current path
            cwd = getcwd()

            # set to new repo path
            self.path_dirs.ensure_dir(path)
            chdir(path)
            status = (True, cwd, path)
        except Exception as e:  # pragma: no cover
            self.logger.error("apply_path failed with error: " + str(e))
            status = (False, str(e))
        self.logger.info("Status of apply_path: " + str(status))
        self.logger.info("Finished: apply_path")
        return status

    def checkout(self, branch="master", version="HEAD"):
        """ Checkout a specific version and branch of a repo """
        self.logger.info("Starting: checkout")
        self.logger.info("branch given: " + str(branch))
        self.logger.info("version given: " + str(version))
        try:
            status = check_output(shlex.split("git checkout " + branch),
                                  stderr=STDOUT,
                                  close_fds=True)
            status = check_output(shlex.split("git pull"),
                                  stderr=STDOUT,
                                  close_fds=True)
            status = check_output(shlex.split("git reset --hard " +
                                              version),
                                  stderr=STDOUT,
                                  close_fds=True)
            response = (True, status)
        except Exception as e:  # pragma: no cover
            self.logger.error("checkout failed with error: " + str(e))
            response = (False, str(e))
        self.logger.info("Status of checkout: " + str(response))
        self.logger.info("Finished: checkout")
        return response

    def clone(self, repo, user=None, pw=None):
        """ Clone the repository """
        self.logger.info("Starting: clone")
        self.logger.info("repo given: " + str(repo))
        self.logger.info("user given: " + str(user))
        status = (True, None)
        try:
            status = self.apply_path(repo)

            # if path already exists, try git checkout to update
            if status[0]:
                self.logger.info("path to clone to: " + str(status[2]))
                try:
                    check_output(shlex.split("git -C " +
                                             status[2] +
                                             " rev-parse"),
                                 stderr=STDOUT,
                                 close_fds=True)
                    self.logger.info("path already exists: " + str(status[2]))
                    self.logger.info("Status of clone: " + str(status[0]))
                    self.logger.info("Finished: clone")
                    chdir(status[1])
                    return (True, status[1])
                except Exception as e:  # pragma: no cover
                    self.logger.info("repo doesn't exist, attempting to " +
                                     "clone: " + str(e))
            else:
                self.logger.error("unable to clone")
                return status

            # ensure cloning still works even if ssl is broken
            cmd = "git config --global http.sslVerify false"
            check_output(shlex.split(cmd), stderr=STDOUT, close_fds=True)

            # check if user and pw were supplied, typically for private repos
            if user and pw:
                # only https is supported when using user/pw
                auth_repo = 'https://' + user + ':' + pw + '@'
                repo = auth_repo + repo.split("https://")[-1]

            # clone repo and build tools
            check_output(shlex.split("git clone --recursive " + repo + " ."),
                         stderr=STDOUT,
                         close_fds=True)

            chdir(status[1])
            status = (True, status[1])
        except Exception as e:  # pragma: no cover
            e_str = str(e)
            # scrub username and password from error message
            if e_str.find('@') >= 0:
                e_str = e_str[:e_str.find('//') + 2] + \
                        e_str[e_str.find('@') + 1:]
            self.logger.error("clone failed with error: " + e_str)
            status = (False, e_str)
        self.logger.info("Status of clone: " + str(status))
        self.logger.info("Finished: clone")
        return status

    def available_tools(self, path, version="HEAD", groups=None):
        """
        Return list of possible tools in repo for the given version and branch
        """
        matches = []
        if groups:
            groups = groups.split(",")
        for root, _, filenames in walk(path):
            files = fnmatch.filter(filenames, 'Dockerfile*')
            # append additional identifiers to tools if multiple in same
            # directory
            add_info = len(files) > 1
            for f in files:
                # !! TODO deal with wild/etc.?
                addtl_info = ''
                if add_info:
                    # @ will be delimiter symbol for multi-tools
                    try:
                        addtl_info = '@' + f.split('.')[1]
                    except Exception as e:
                        addtl_info = '@unspecified'
                if groups:
                    if add_info and not addtl_info == '@unspecified':
                        tool_template = addtl_info.split('@')[1] + '.template'
                    else:
                        tool_template = 'vent.template'
                    try:
                        template = Template(template=join(root,
                                                          tool_template))
                        for group in groups:
                            template_groups = template.option("info", "groups")
                            if (template_groups[0] and
                               group in template_groups[1]):
                                matches.append((root.split(path)[1] +
                                                addtl_info, version))
                    except Exception as e:  # pragma: no cover
                        self.logger.info("error: " + str(e))
                else:
                    matches.append((root.split(path)[1] +
                                    addtl_info, version))
        return matches

    @staticmethod
    def tool_matches(tools=None, version='HEAD'):
        """ Get the tools paths and versions that were specified """
        matches = []
        if tools:
            for tool in tools:
                match_version = version
                if tool[1] != '':
                    match_version = tool[1]
                match = ''
                if tool[0].endswith('/'):
                    match = tool[0][:-1]
                elif tool[0] != '.':
                    match = tool[0]
                if not match.startswith('/') and match != '':
                    match = '/'+match
                matches.append((match, match_version))
        return matches

    def start_sections(self,
                       s,
                       files,
                       groups,
                       enabled,
                       branch,
                       version):
        """ Run through sections for prep_start """
        tool_d = {}
        status = (True, None)
        for section in s:
            # initialize needed vars
            c_name = s[section]['image_name'].replace(':', '-')
            c_name = c_name.replace('/', '-')
            instance_num = re.search(r'\d+$', s[section]['name'])
            if instance_num:
                c_name += instance_num.group()
            image_name = s[section]['image_name']

            # checkout the right version and branch of the repo
            cwd = getcwd()
            self.logger.info("current directory is: " + str(cwd))
            # images built from registry won't have path
            if s[section]['path'] != '':
                chdir(join(s[section]['path']))
                status = self.checkout(branch=branch, version=version)
                self.logger.info(status)
                chdir(cwd)

            tool_d[c_name] = {'image': image_name,
                              'name': c_name}
            # get rid of all commented sections in various runtime
            # configurations
            manifest = Template(self.manifest)
            overall_dict = {}
            for setting in ['info', 'docker', 'gpu', 'settings', 'service']:
                option = manifest.option(section, setting)
                if option[0]:
                    overall_dict[setting] = {}
                    settings_dict = json.loads(option[1])
                    for opt in settings_dict:
                        if not opt.startswith('#'):
                            overall_dict[setting][opt] = \
                                    settings_dict[opt]

            if 'docker' in overall_dict:
                options_dict = overall_dict['docker']
                for option in options_dict:
                    options = options_dict[option]
                    # check for commands to evaluate
                    if '`' in options:
                        cmds = options.split('`')
                        if len(cmds) > 2:
                            i = 1
                            while i < len(cmds):
                                try:
                                    cmds[i] = check_output(shlex.split(cmds[i]),
                                                           stderr=STDOUT,
                                                           close_fds=True).strip()
                                except Exception as e:  # pragma: no cover
                                    self.logger.error("unable to evaluate command specified in vent.template: " + str(e))
                                i += 2
                        options = "".join(cmds)
                    # store options set for docker
                    try:
                        tool_d[c_name][option] = literal_eval(options)
                    except Exception as e:  # pragma: no cover
                        self.logger.info("unable to literal_eval: " +
                                         str(options))
                        tool_d[c_name][option] = options

            if 'labels' not in tool_d[c_name]:
                tool_d[c_name]['labels'] = {}

            # get the service uri info
            if 'service' in overall_dict:
                try:
                    options_dict = overall_dict['service']
                    for option in options_dict:
                        tool_d[c_name]['labels'][option] = options_dict[option]
                except Exception as e:   # pragma: no cover
                    self.logger.error("unable to store service options for "
                                      "docker: " + str(e))

            # check for gpu settings
            if 'gpu' in overall_dict:
                try:
                    options_dict = json.loads(status[1])
                    for option in options_dict:
                        tool_d[c_name]['labels']['gpu.'+option] = options_dict[option]
                except Exception as e:   # pragma: no cover
                    self.logger.error("unable to store gpu options for "
                                      "docker: " + str(e))

            # get temporary name for links, etc.
            plugin_c = Template(template=self.manifest)
            status, plugin_sections = plugin_c.sections()
            self.logger.info(status)
            for plugin_section in plugin_sections:
                status = plugin_c.option(plugin_section, "link_name")
                self.logger.info(status)
                image_status = plugin_c.option(plugin_section, "image_name")
                self.logger.info(image_status)
                if status[0] and image_status[0]:
                    cont_name = image_status[1].replace(':', '-')
                    cont_name = cont_name.replace('/', '-')
                    if cont_name not in tool_d:
                        tool_d[cont_name] = {'image': image_status[1],
                                             'name': cont_name,
                                             'start': False}
                    tool_d[cont_name]['tmp_name'] = status[1]

            # add extra labels
            tool_d[c_name]['labels']['vent'] = Version()
            tool_d[c_name]['labels']['vent.namespace'] = s[section]['namespace']
            tool_d[c_name]['labels']['vent.branch'] = branch
            tool_d[c_name]['labels']['vent.version'] = version
            tool_d[c_name]['labels']['vent.name'] = s[section]['name']
            tool_d[c_name]['labels']['vent.section'] = section
            tool_d[c_name]['labels']['vent.repo'] = s[section]['repo']
            tool_d[c_name]['labels']['vent.type'] = s[section]['type']

            # check for log_config settings in external-services
            externally_configured = False
            vent_config = Template(self.path_dirs.cfg_file)
            for ext_tool in vent_config.section('external-services')[1]:
                if ext_tool[0].lower() == 'syslog':
                    try:
                        log_dict = json.loads(ext_tool[1])
                        # configure if not locally active
                        if ('locally_active' not in log_dict or
                                log_dict['locally_active'] == 'no'):
                            del log_dict['locally_active']
                            log_config = {}
                            log_config['type'] = 'syslog'
                            log_config['config'] = {}
                            ip_address = ''
                            port = ''
                            for option in log_dict:
                                if option == 'ip_address':
                                    ip_address = log_dict[option]
                                elif option == 'port':
                                    port = log_dict['port']
                            syslog_address = 'tcp://' + ip_address + ':' + port
                            syslog_config = {'syslog-address': syslog_address,
                                             'syslog-facility': 'deamon',
                                             'tag': 'plugin'}
                            log_config['config'].update(syslog_config)
                            externally_configured = True
                    except Exception as e:  # pragma: no cover
                        self.logger.error("external settings for log_config"
                                          " couldn't be stored because: " +
                                          str(e))
                        externally_configured = False
            if not externally_configured:
                log_config = {'type': 'syslog',
                              'config': {'syslog-address': 'tcp://0.0.0.0:514',
                                         'syslog-facility': 'daemon',
                                         'tag': 'plugin'}}
            if 'groups' in s[section]:
                # add labels for groups
                tool_d[c_name]['labels']['vent.groups'] = s[section]['groups']
                # add restart=always to core containers
                if 'core' in s[section]['groups']:
                    tool_d[c_name]['restart_policy'] = {"Name": "always"}
                # map network names to environment variables
                if 'network' in s[section]['groups']:
                    vent_config = Template(template=self.path_dirs.cfg_file)
                    nic_mappings = vent_config.section('network-mapping')
                    nics = ''
                    if nic_mappings[0]:
                        for nic in nic_mappings[1]:
                            nics += nic[0] + ":" + nic[1] + ","
                        nics = nics[:-1]
                    if nics:
                        if 'environment' in tool_d[c_name]:
                            tool_d[c_name]['environment'].append("VENT_NICS="+nics)
                        else:
                            tool_d[c_name]['environment'] = ["VENT_NICS="+nics]
                # send logs to syslog
                if ('syslog' not in s[section]['groups'] and
                   'core' in s[section]['groups']):
                    log_config['config']['tag'] = 'core'
                    tool_d[c_name]['log_config'] = log_config
                if 'syslog' not in s[section]['groups']:
                    tool_d[c_name]['log_config'] = log_config
                # mount necessary directories
                if 'files' in s[section]['groups']:
                    if 'volumes' in tool_d[c_name]:
                        tool_d[c_name]['volumes'][self.path_dirs.base_dir[:-1]] = {'bind': '/vent', 'mode': 'ro'}
                    else:
                        tool_d[c_name]['volumes'] = {self.path_dirs.base_dir[:-1]: {'bind': '/vent', 'mode': 'ro'}}
                    if files[0]:
                        tool_d[c_name]['volumes'][files[1]] = {'bind': '/files', 'mode': 'rw'}
            else:
                tool_d[c_name]['log_config'] = log_config

            # add label for priority
            if 'settings' in overall_dict:
                try:
                    options_dict = overall_dict['settings']
                    for option in options_dict:
                        if option == 'priority':
                            tool_d[c_name]['labels']['vent.priority'] = options_dict[option]
                except Exception as e:   # pragma: no cover
                    self.logger.error("unable to store settings options "
                                      "for docker " + str(e))

            # only start tools that have been built
            if s[section]['built'] != 'yes':
                del tool_d[c_name]
            # store section information for adding info to manifest later
            else:
                tool_d[c_name]['section'] = section
        return status, tool_d

    def prep_start(self,
                   repo=None,
                   name=None,
                   groups=None,
                   enabled="yes",
                   branch="master",
                   version="HEAD"):
        """
        Start a set of tools that match the parameters given, if no parameters
        are given, start all installed tools on the master branch at verison
        HEAD that are enabled
        """
        args = locals()
        self.logger.info("Starting: prep_start")
        self.logger.info("Arguments: "+str(args))
        status = (False, None)
        try:
            options = ['name',
                       'namespace',
                       'built',
                       'groups',
                       'path',
                       'image_name',
                       'branch',
                       'repo',
                       'type',
                       'version']
            vent_config = Template(template=self.path_dirs.cfg_file)
            files = vent_config.option('main', 'files')
            files = (files[0], expanduser(files[1]))
            s, _ = self.constraint_options(args, options)
            status, tool_d = self.start_sections(s,
                                                 files,
                                                 groups,
                                                 enabled,
                                                 branch,
                                                 version)

            # look out for links to delete because they're defined externally
            links_to_delete = set()
            # check and update links, volumes_from, network_mode
            for container in tool_d.keys():
                if 'links' in tool_d[container]:
                    for link in tool_d[container]['links']:
                        # add links to external services already running if
                        # necessary, by default configure local services too
                        configure_local = True
                        ext = 'external-services'
                        if link in vent_config.options(ext)[1]:
                            try:
                                lconf = json.loads(vent_config.option(ext,
                                                                      link)[1])
                                if ('locally_active' not in lconf or
                                        lconf['locally_active'] == 'no'):
                                    ip_adr = lconf['ip_address']
                                    port = lconf['port']
                                    tool_d[container]['extra_hosts'] = {}
                                    # containers use lowercase names for
                                    # connections
                                    tool_d[container]['extra_hosts'][link.lower()] = ip_adr
                                    # create an environment variable for container
                                    # to access port later
                                    env_variable = link.upper() + \
                                            "_CUSTOM_PORT=" + port
                                    if 'environment' not in tool_d[container]:
                                        tool_d[container]['environment'] = []
                                    tool_d[container]['environment'].append(env_variable)
                                    # remove the entry from links because no
                                    # longer connecting to local container
                                    links_to_delete.add(link)
                                    configure_local = False
                            except Exception as e:  # pragma: no cover
                                self.logger.error("couldn't load external"
                                                  " settings because: " +
                                                  str(e))
                                configure_local = True
                                status = False
                        if configure_local:
                            for c in tool_d.keys():
                                if ('tmp_name' in tool_d[c] and
                                   tool_d[c]['tmp_name'] == link):
                                    tool_d[container]['links'][tool_d[c]['name']] = tool_d[container]['links'].pop(link)
                if 'volumes_from' in tool_d[container]:
                    tmp_volumes_from = tool_d[container]['volumes_from']
                    tool_d[container]['volumes_from'] = []
                    for volumes_from in list(tmp_volumes_from):
                        for c in tool_d.keys():
                            if ('tmp_name' in tool_d[c] and
                               tool_d[c]['tmp_name'] == volumes_from):
                                tool_d[container]['volumes_from'].append(tool_d[c]['name'])
                                tmp_volumes_from.remove(volumes_from)
                    tool_d[container]['volumes_from'] += tmp_volumes_from
                if 'network_mode' in tool_d[container]:
                    if tool_d[container]['network_mode'].startswith('container:'):
                        network_c_name = tool_d[container]['network_mode'].split('container:')[1]
                        for c in tool_d.keys():
                            if ('tmp_name' in tool_d[c] and
                               tool_d[c]['tmp_name'] == network_c_name):
                                tool_d[container]['network_mode'] = 'container:' + tool_d[c]['name']

            # remove tmp_names
            for c in tool_d.keys():
                if 'tmp_name' in tool_d[c]:
                    del tool_d[c]['tmp_name']

            # remove links section if all were externally configured
            for c in tool_d.keys():
                if 'links' in tool_d[c]:
                    for link in links_to_delete:
                        if link in tool_d[c]['links']:
                            del tool_d[c]['links'][link]
                    # delete links if no more defined
                    if not tool_d[c]['links']:
                        del tool_d[c]['links']

            # remove containers that shouldn't be started
            for c in tool_d.keys():
                deleted = False
                if 'start' in tool_d[c] and not tool_d[c]['start']:
                    del tool_d[c]
                    deleted = True
                if not deleted:
                    # look for tools services that are being done externally
                    # tools are capitalized in vent.cfg, so make them lowercase
                    # for comparison
                    ext = 'external-services'
                    external_tools = vent_config.section(ext)[1]
                    name = tool_d[c]['labels']['vent.name']
                    for tool in external_tools:
                        if name == tool[0].lower():
                            try:
                                tool_config = json.loads(tool[1])
                                if ('locally_active' in tool_config and
                                        tool_config['locally_active'] == 'no'):
                                    del tool_d[c]
                            except Exception as e:  # pragma: no cover
                                self.logger.warn("Locally running container " +
                                                 name + " may be redundant")

            if status:
                status = (True, tool_d)
            else:
                status = (False, tool_d)
        except Exception as e:  # pragma: no cover
            self.logger.error("prep_start failed with error: "+str(e))
            status = (False, e)

        self.logger.info("Status of prep_start: "+str(status[0]))
        self.logger.info("Finished: prep_start")
        return status

    def start_priority_containers(self, groups, group_orders, tool_d):
        """ Select containers based on priorities to start """
        vent_cfg = Template(self.path_dirs.cfg_file)
        cfg_groups = vent_cfg.option('groups', 'start_order')
        if cfg_groups[0]:
            cfg_groups = cfg_groups[1].split(',')
        else:
            cfg_groups = []
        all_groups = sorted(set(groups))
        s_conts = []
        f_conts = []
        # start tools in order of group defined in vent.cfg
        for group in cfg_groups:
            # remove from all_groups because already checked out
            if group in all_groups:
                all_groups.remove(group)
            if group in group_orders:
                for cont_t in sorted(group_orders[group]):
                    if cont_t[1] not in s_conts:
                        s_conts, f_conts = self.start_containers(cont_t[1],
                                                                 tool_d,
                                                                 s_conts,
                                                                 f_conts)
        # start tools that haven't been specified in the vent.cfg, if any
        for group in all_groups:
            if group in group_orders:
                for cont_t in sorted(group_orders[group]):
                    if cont_t[1] not in s_conts:
                        s_conts, f_conts = self.start_containers(cont_t[1],
                                                                 tool_d,
                                                                 s_conts,
                                                                 f_conts)
        return (s_conts, f_conts)

    def start_remaining_containers(self, containers_remaining, tool_d):
        """
        Select remaining containers that didn't have priorities to start
        """
        s_containers = []
        f_containers = []
        for container in containers_remaining:
            s_containers, f_containers = self.start_containers(container,
                                                               tool_d,
                                                               s_containers,
                                                               f_containers)
        return (s_containers, f_containers)

    def start_containers(self,
                         container,
                         tool_d,
                         s_containers,
                         f_containers):
        """ Start container that was passed in and return status """
        # use section to add info to manifest
        section = tool_d[container]['section']
        del tool_d[container]['section']
        manifest = Template(self.manifest)
        try:
            c = self.d_client.containers.get(container)
            c.start()
            s_containers.append(container)
            manifest.set_option(section, 'running', 'yes')
            self.logger.info("started " + str(container) +
                             " with ID: " + str(c.short_id))
        except Exception as err:
            try:
                gpu = 'gpu.enabled'
                failed = False
                if (gpu in tool_d[container]['labels'] and
                   tool_d[container]['labels'][gpu] == 'yes'):
                    vent_config = Template(template=self.path_dirs.cfg_file)
                    port = ''
                    host = ''
                    result = vent_config.option('nvidia-docker-plugin', 'port')
                    if result[0]:
                        port = result[1]
                    else:
                        port = '3476'
                    result = vent_config.option('nvidia-docker-plugin', 'host')
                    if result[0]:
                        host = result[1]
                    else:
                        # now just requires ip, ifconfig
                        try:
                            route = check_output(('ip', 'route')).split('\n')
                            default = ''
                            # grab the default network device.
                            for device in route:
                                if 'default' in device:
                                    default = device.split()[4]
                                    break

                            # grab the IP address for the default device
                            ip_addr = check_output(('ifconfig', default))
                            ip_addr = ip_addr.split('\n')[1].split()[1]
                            host = ip_addr
                        except Exception as e:  # pragma no cover
                            self.logger.error('failed to grab ip. Ensure that \
                                              ip and ifconfig are installed')
                    nd_url = 'http://' + host + ':' + port + '/v1.0/docker/cli'
                    params = {'vol': 'nvidia_driver'}

                    r = requests.get(nd_url, params=params)
                    if r.status_code == 200:
                        options = r.text.split()
                        for option in options:
                            if option.startswith('--volume-driver='):
                                tool_d[container]['volume_driver'] = option.split("=", 1)[1]
                            elif option.startswith('--volume='):
                                vol = option.split("=", 1)[1].split(":")
                                if 'volumes' in tool_d[container]:
                                    # !! TODO handle if volumes is a list
                                    tool_d[container]['volumes'][vol[0]] = {'bind': vol[1],
                                                                            'mode': vol[2]}
                                else:
                                    tool_d[container]['volumes'] = {vol[0]:
                                                                    {'bind': vol[1],
                                                                     'mode': vol[2]}}
                            elif option.startswith('--device='):
                                dev = option.split("=", 1)[1]
                                if 'devices' in tool_d[container]:
                                    tool_d[container]['devices'].append(dev +
                                                                        ":" +
                                                                        dev +
                                                                        ":rwm")
                                else:
                                    tool_d[container]['devices'] = [dev + ":" + dev + ":rwm"]
                            else:
                                self.logger.error("Unable to parse " +
                                                  "nvidia-docker option: " +
                                                  str(option))
                    else:
                        failed = True
                        f_containers.append(container)
                        manifest.set_option(section, 'running', 'failed')
                        self.logger.error("failed to start " + str(container) +
                                          " because nvidia-docker-plugin " +
                                          "failed with: " + str(r.status_code))
                if not failed:
                    cont_id = self.d_client.containers.run(detach=True,
                                                           **tool_d[container])
                    s_containers.append(container)
                    manifest.set_option(section, 'running', 'yes')
                    self.logger.info("started " + str(container) +
                                     " with ID: " + str(cont_id))
            except Exception as e:  # pragma: no cover
                f_containers.append(container)
                manifest.set_option(section, 'running', 'failed')
                self.logger.error("failed to start " + str(container) +
                                  " because: " + str(e))
        # save changes made to manifest
        manifest.write_config()
        return s_containers, f_containers