def startfield(args):
this_hostname = Platform().hostname()
plandoc = LXCPlanFileDoc(args.lxcplanfile)
config = ConfigDictionary()
workdir = config.get('etce', 'WORK_DIRECTORY')
if not os.path.exists(workdir):
raise LXCError('ETCE WORK_DIRECTORY "%s" not found. ' \
'Please create it before starting.' % workdir)
# lockfile
lockfilename = \
os.path.join(plandoc.lxc_root_directory(this_hostname),
'etce.lxc.lock')
if os.path.isfile(lockfilename):
err = 'Detected an active lxc field with root at: %s. ' \
'Run "etce-lxc stop" first.' % \
plandoc.lxc_root_directory(this_hostname)
raise LXCError(err)
startlxcs(plandoc, args.writehosts, args.forcelxcroot, args.dryrun)
if not args.dryrun:
shutil.copy(args.lxcplanfile, lockfilename)
other_hosts = set(plandoc.hostnames()).difference(
['localhost', this_hostname])
# start containers on other hosts, if any
if other_hosts:
client = None
try:
client = ClientBuilder().build(\
other_hosts,
user=args.user,
port=args.port)
# push the file and execute
client.put(args.lxcplanfile, '.', other_hosts, doclobber=True)
# on the destination node the netplan file gets pushed to the
# ETCE WORK_DIRECTORY
command = 'lxcmanager startlxcs %s writehosts=%s forcelxcroot=%s' \
% (os.path.basename(args.lxcplanfile),
args.writehosts,
args.forcelxcroot)
ret = client.execute(command, other_hosts)
for k in ret:
print '[%s] return: %s' % (k, ret[k].retval['result'])
finally:
if client:
client.close()
class Executer(object):
def __init__(self):
self._test = TestDirectory(os.getcwd(), None)
self._stepsfiledoc = StepsFileDoc(self._test.stepsfile())
self._config = ConfigDictionary()
def step(self, stepname, starttime, logsubdirectory):
wrappers = self._stepsfiledoc.getwrappers(stepname)
hostname = Platform().hostname()
hostdir = os.path.join(self._test.location(), hostname)
if not os.path.exists(hostdir):
return
logdirectory = os.path.join(self._config.get('etce', 'WORK_DIRECTORY'),
logsubdirectory, hostname)
if not os.path.exists(logdirectory):
os.makedirs(logdirectory)
if wrappers:
trialargs = {
'logdirectory': logdirectory,
'starttime': starttime,
'stepname': stepname,
'dryrun': False
}
wldr = WrapperLoader()
for wrapperentry, methodname, testargs in wrappers:
wrapperinstance = \
wldr.loadwrapper(wrapperentry.name,
self._stepsfiledoc.getpackageprefixes())
# ensure each wrapper is called with the testdirectory as
# the current working directory, and with it's own
# instance of the wrapper context
os.chdir(hostdir)
ctx = WrapperContext(
WrapperContextImpl(wrapperentry.name, wrapperinstance,
trialargs, testargs, self._config,
self._test))
if methodname == 'run':
# run calls prerun, run, postrun to encourage
# pre/post condition checks
wrapperinstance.prerun(ctx)
wrapperinstance.run(ctx)
wrapperinstance.postrun(ctx)
else:
wrapperinstance.stop(ctx)
class Publisher(object):
def __init__(self, test_directory):
self._test_directory = test_directory
test_filename_abs = os.path.join(self._test_directory,
TestDirectory.TESTFILENAME)
self._testdoc = TestFileDoc(test_filename_abs)
self._config = ConfigDictionary()
def merge_with_base(self,
mergedir,
absbasedir_override=None,
extrafiles=[]):
'''
Merge the files from the basedirectory (if there is one), the
test directory and the extrafiles to the merge directory.
'''
if not mergedir:
raise ValueError('A merge directory must be specified in merging ' \
'a test directory with its base directory. ' \
'Quitting.')
# Quit if the merge directory already exists. This also handles the case
# where mergedir is the same as the self._test_directory
if os.path.exists(mergedir):
print('Merge directory "%s" already exists, skipping merge.' %
mergedir,
file=sys.stderr)
return
srcdirs = [self._test_directory]
# choose the base directory for the merge
base_directory = None
if absbasedir_override:
base_directory = absbasedir_override
elif self._testdoc.has_base_directory:
# test.xml file base directory is permitted to be relative or absolute
if self._testdoc.base_directory[0] == os.path.sep:
base_directory = self._testdoc.base_directory
else:
base_directory = os.path.join(self._test_directory,
self._testdoc.base_directory)
else:
# merge devolves to copying the test directory to merge directory
pass
# check that the base directory exists
if base_directory:
if os.path.isdir(base_directory):
srcdirs.insert(0, base_directory)
else:
errstr = 'In merging test directory "%s", cannot find base directory "%s". Quitting.' % \
(self._test_directory, base_directory)
raise ValueError(errstr)
# move the files in basedirectory, then test directory
for srcdir in srcdirs:
if srcdir[-1] == '/':
srcdir = srcdir[:-1]
subfiles = self._get_subfiles(srcdir)
for subfile in subfiles:
srcfile = os.path.join(srcdir, subfile)
dstfile = os.path.join(mergedir, subfile)
dirname = os.path.dirname(dstfile)
if not os.path.exists(dirname):
os.makedirs(dirname)
if subfile == TestDirectory.TESTFILENAME:
self._testdoc.rewrite_without_base_directory(dstfile)
else:
shutil.copyfile(srcfile, dstfile)
self._move_extra_files(extrafiles, mergedir)
# check for corner case where a template directory is specified
# in test file but is empty. Issue a warning, but move
# it to the mergedirectory anyway.
self._warn_on_empty_template_directory(srcdirs, mergedir)
def _move_extra_files(self, extrafiles, dstdir):
for srcfile, dstfile in extrafiles:
dstfile = os.path.join(dstdir, dstfile)
dirname = os.path.dirname(dstfile)
if not os.path.exists(dirname):
os.makedirs(dirname)
shutil.copyfile(srcfile, dstfile)
def _warn_on_empty_template_directory(self, srcdirs, mergedir):
template_directory_names = self._testdoc.template_directory_names
nonexistent_template_directories = set([])
empty_template_directories = set([])
for template_directory_name in template_directory_names:
empty = True
exists = False
for srcdir in srcdirs:
dir_to_test = os.path.join(srcdir, template_directory_name)
if not os.path.exists(dir_to_test):
continue
exists = True
if os.listdir(dir_to_test):
empty = False
if not exists:
nonexistent_template_directories.update(
[template_directory_name])
if empty:
empty_template_directories.update([template_directory_name])
if nonexistent_template_directories:
errstr = 'Missing template directories {%s}. Quitting.' % \
', '.join(list(nonexistent_template_directories))
raise ValueError(errstr)
for empty_template_directory in empty_template_directories:
print('Warning: template directory "%s" is empty.' \
% empty_template_directory,
file=sys.stderr)
os.makedirs(os.path.join(mergedir, empty_template_directory))
def publish(self,
publishdir,
logdir=None,
absbasedir_override=None,
runtime_overlays={},
extrafiles=[],
overwrite_existing_publishdir=False):
'''Publish the directory described by the testdirectory and
its test.xml file to the destination directory.
1. First instantiate template directories and files named by test.xml.
2. Move other files from the test directory to the destination
(filling in overlays).
3. Move extra files, specified by the caller, to the destination.
publish combines the files from the test directory and the (optional)
base directory to the destination.
'''
srcdirs = [self._test_directory]
if absbasedir_override:
srcdirs.insert(0, absbasedir_override)
elif self._testdoc.has_base_directory:
# test.xml file base directory is permitted to be relative or absolute
if self._testdoc.base_directory[0] == os.path.sep:
srcdirs.insert(0, self._testdoc.base_directory)
else:
srcdirs.insert(
0,
os.path.join(self._test_directory,
self._testdoc.base_directory))
templates = self._testdoc.templates
subdirectory_map = {}
for srcdir in srcdirs:
subdirectory_map.update(self._build_subdirectory_map(srcdir))
subdirectory_map = self._prune_unused_template_directories(
subdirectory_map)
etce_config_overlays, env_overlays = self._get_host_and_env_overlays()
testfile_global_overlays = self._testdoc.global_overlays(
subdirectory_map)
print()
print('Publishing %s to %s' % (self._testdoc.name, publishdir))
if os.path.exists(publishdir):
if overwrite_existing_publishdir:
shutil.rmtree(publishdir)
else:
errstr = 'ERROR: destination dir "%s" already exists.' \
% publishdir
raise ValueError(errstr)
os.makedirs(publishdir)
# move template files
self._instantiate_templates(templates, runtime_overlays, env_overlays,
etce_config_overlays, publishdir,
subdirectory_map, logdir)
# and then the remaining files
self._move(subdirectory_map, runtime_overlays, env_overlays,
testfile_global_overlays, etce_config_overlays, publishdir,
logdir)
self._move_extra_files(extrafiles, publishdir)
def _get_host_and_env_overlays(self):
# Assemble overlays from
# 1. etce.conf
etce_config_overlays = {}
for k, v in self._config.items('overlays'):
etce_config_overlays[k] = etce.utils.configstrtoval(v)
# 3. overlay set by environment variables, identified by
# etce.conf ENV_OVERLAYS_ALLOW
env_overlays = {}
env_overlays_allow = self._config.get('etce', 'ENV_OVERLAYS_ALLOW', '')
if len(env_overlays_allow):
for overlay in env_overlays_allow.split(':'):
if overlay in os.environ:
env_overlays[overlay] = etce.utils.configstrtoval(
os.environ[overlay])
return (etce_config_overlays, env_overlays)
def _prune_unused_template_directories(self, subdirectory_map):
directory_templates_used_by_test = self._testdoc.template_directory_names
all_template_directory_keys = set([
entry.root_sub_entry for entry in subdirectory_map.values()
if entry.template_directory_member
])
directory_templates_not_used_by_test = \
all_template_directory_keys.difference(directory_templates_used_by_test)
rmpaths = []
for unused in directory_templates_not_used_by_test:
for subpath in subdirectory_map:
if subpath.startswith(unused + '/'):
rmpaths.append(subpath)
map(subdirectory_map.pop, rmpaths)
return subdirectory_map
def _move(self, subdirectory_map, runtime_overlays, env_overlays,
testfile_global_overlays, etce_config_overlays, publishdir,
logdir):
skipfiles = (TestDirectory.CONFIGFILENAME, TestDirectory.HOSTFILENAME)
omitdirs = (TestDirectory.DOCSUBDIRNAME, )
for relname, entry in subdirectory_map.items():
if entry.root_sub_entry in omitdirs:
continue
# full path to the first level entry
first_level_entry_abs = entry.root_sub_entry_absolute
reserved_overlays = {}
# first_level_entry is a nodename if it is a directory
if entry.root_sub_entry_is_dir:
reserved_overlays = {'etce_hostname': entry.root_sub_entry}
if logdir:
reserved_overlays['etce_log_path'] = os.path.join(
logdir, entry.root_sub_entry)
# for non-template file, overlays maps are searched in precedence:
#
# 1. reserved overlays
# 2. runtime overlays (passed in by user or calling function)
# 3. overlays set by environment variable
# 4. overlays set in the test.xml file that apply to all files (at
# the top level)
# 5. overlays set in the etce.conf "overlays" section - default
# values
overlays = ChainMap(reserved_overlays, runtime_overlays,
env_overlays, testfile_global_overlays,
etce_config_overlays)
fulldstfile = os.path.join(publishdir, relname)
dstfiledir = os.path.dirname(fulldstfile)
if not os.path.exists(dstfiledir):
os.makedirs(dstfiledir)
if relname == TestDirectory.TESTFILENAME:
self._testdoc.rewrite_without_overlays_and_templates(
fulldstfile)
elif relname in skipfiles:
shutil.copyfile(entry.full_name, fulldstfile)
else:
format_file(entry.full_name, fulldstfile, overlays)
def _instantiate_templates(self, templates, runtime_overlays, env_overlays,
etce_config_overlays, publishdir,
subdirectory_map, logdir):
for template in templates:
subdirectory_map = template.instantiate(subdirectory_map,
publishdir, logdir,
runtime_overlays,
env_overlays,
etce_config_overlays)
def _get_subfiles(self, directory):
files = []
for dirname, dirnames, filenames in os.walk(directory):
for filename in filenames:
fullpath = os.path.join(dirname, filename)
relpath = os.path.relpath(fullpath, directory)
files.append(relpath)
return files
def _build_subdirectory_map(self, directory):
subfiles = {}
for dirname, dirnames, filenames in os.walk(directory):
for filename in filenames:
fullpath = os.path.join(dirname, filename)
relpath = os.path.relpath(fullpath, directory)
subfiles[relpath] = TestDirectoryEntry(directory, relpath)
return subfiles
class SSHClient(etce.fieldclient.FieldClient):
RETURNVALUE_OPEN_DEMARCATOR='***********ETCESSH_RETURN_VALUE_START********************'
RETURNVALUE_CLOSE_DEMARCATOR='***********ETCESSH_RETURN_VALUE_STOP********************'
def __init__(self, hosts, **kwargs):
etce.fieldclient.FieldClient.__init__(self, hosts)
self._connection_dict = {}
self._execute_threads = []
user = kwargs.get('user', None)
port = kwargs.get('port', None)
key_filenames = None
self._envfile = kwargs.get('envfile', None)
self._config = ConfigDictionary()
ssh_config_file = os.path.expanduser('~/.ssh/config')
ssh_config = None
if os.path.exists(ssh_config_file):
ssh_config = paramiko.SSHConfig()
ssh_config.parse(open(ssh_config_file))
for host in hosts:
host_config = None
if ssh_config:
host_config = ssh_config.lookup(host)
host_user = os.path.basename(os.path.expanduser('~'))
host_port = 22
host_key_filenames = []
if user:
host_user = user
elif host_config:
host_user = host_config.get('user', host_user)
if port:
host_port = port
elif host_config:
host_port = host_config.get('port', host_port)
if key_filenames:
host_key_filenames = key_filenames
elif host_config:
host_key_filenames = host_config.get('identityfile', host_key_filenames)
try:
client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.client.RejectPolicy())
client.load_system_host_keys()
self._connection_dict[host] = client
self._connection_dict[host].connect(hostname=host,
username=host_user,
port=int(host_port),
key_filename=host_key_filenames,
allow_agent=True)
except socket.gaierror as ge:
message = '%s "%s". Quitting.' % (ge.strerror, host)
raise FieldConnectionError(message)
except paramiko.ssh_exception.NoValidConnectionsError as e:
raise FieldConnectionError('Unable to connect to host "%s". Quitting.' % host)
except Exception as e:
message = 'Unable to connect to host "%s" (%s). Quitting.' % (host, str(e))
raise FieldConnectionError(message)
def sourceisdestination(self, host, srcfilename, dstfilename):
if srcfilename == dstfilename:
p = Platform()
if p.hostname_has_local_address(host):
return True
return False
def put(self,
localsrc,
remotedst,
hosts,
doclobber=False,
minclobberdepth=2):
# this is intended to work like 'cp -R src dstdir' where src
# can be a file name or directory name (relative or absolute path)
# and destination is always a directory. dstdir can be relative
# or absolute also, but it is rooted at WORK_DIRECTORY on the receiving
# nodes. Examples:
#
# src is a file
# src=foo.txt, dst='/': moves foo.txt to WORK_DIRECTORY/foo.txt
# src=/home/bar/foo.txt, dst='/': moves foo.txt to WORK_DIRECTORY/foo.txt
# src is a directory
# src=./foo/bar, dst='bar': moves bar to WORK_DIRECTORY/bar/bar
# src=/opt/foo/bar, dst='bar': moves bar to WORK_DIRECTORY/bar/bar
#
remotesubdir = self._normalize_remotedst(remotedst)
srcdir,srcbase = self._normalize_split_localsubdir(localsrc)
if not os.path.exists(localsrc):
raise RuntimeError('Error: "%s" doesn\'t exist. Quitting.' % srcbase)
srctar = ''
cwd = os.getcwd()
try:
# move to directory containing the src
if len(srcdir) > 0:
os.chdir(srcdir)
# eliminate cases where src and dst are same path on same host
# this is local directory that we are putting
tmppath = os.getcwd()
abssrc = os.path.join(tmppath, srcbase)
# this is where this node would resolve the put location if it
# were a receiver
etcedir = self._config.get('etce', 'WORK_DIRECTORY')
tmpsubdir = remotesubdir
if tmpsubdir == '.':
tmpsubdir = ''
absdst = os.path.join(etcedir, tmpsubdir, srcbase)
dsthosts = []
# only move when not same host and same directory
for host in hosts:
if self.sourceisdestination(host, abssrc, absdst):
print 'Skipping host "%s". Source and destination are the same.' % host
continue
dsthosts.append(host)
# continue if we have at least one non self host
if len(dsthosts) == 0:
return
# first step, move the tar file to remote /tmp
srctar = etce.utils.tarzip([srcbase])
abssrctar = os.path.join(os.getcwd(), srctar)
absdsttar = os.path.join('/tmp', srctar)
threads = []
for host in dsthosts:
# create name of tar file on destination
if host in self._connection_dict:
threads.append(PutThread(self._connection_dict[host],
abssrctar,
absdsttar,
host))
for t in threads:
t.start()
for t in threads:
t.join()
# now extract tarfile on dst hosts to the output path
deletetar = True
command = 'utils untarzip %s %s %s %d %s' % (absdsttar,
remotesubdir,
str(doclobber),
minclobberdepth,
str(deletetar))
self.execute(command, hosts)
finally:
if os.path.exists(srctar):
os.remove(srctar)
os.chdir(cwd)
def interrupt(self):
for thread in self._execute_threads:
thread.interrupt()
def execute(self, commandstr, hosts, workingdir=None):
# execute an etce command over ssh
self._execute_threads = []
fullcommandstr = ''
if self._envfile is not None:
fullcommandstr += '. %s; ' % self._envfile
fullcommandstr += 'etce-field-exec '
if not workingdir is None:
fullcommandstr += '--cwd %s ' % workingdir
fullcommandstr += commandstr
for host in hosts:
host_fullcommandstr = 'export HOSTNAME=%s; ' % host + fullcommandstr
if host in self._connection_dict:
self._execute_threads.append(ExecuteThread(self._connection_dict[host],
host_fullcommandstr,
host))
# start the threads
for t in self._execute_threads:
t.start()
# collect the return objects and monitor for exception
returnobjs = {}
exception = False
keyboard_interrupt = False
for t in self._execute_threads:
# cycle on join to allow keyboard interrupts
# to occur immediately
while t.isAlive():
t.join(5.0)
returnobjs[t.name] = t.returnobject()
if returnobjs[t.name].retval['isexception']:
exception = True
elif returnobjs[t.name].keyboard_interrupt:
keyboard_interrupt = True
# raise an exception if any return object is an exception
if exception:
raise ETCEExecuteException(returnobjs)
if keyboard_interrupt:
raise KeyboardInterrupt()
# return in error free case
return returnobjs
def collect(self, remotesrc, localdstdir, hosts):
print 'Collecting files from hosts "%s" to "%s."' % (', '.join(hosts), localdstdir)
if len(hosts) == 0:
print ' Warning: no hosts.'
return
remotesubdir = self._normalize_remotesrc(remotesrc)
srchosts = []
# make the destination if it does not exist
if not os.path.exists(localdstdir) or not os.path.isdir(localdstdir):
print 'Warning: local directory "%s" does not exist. Will attempt to make.' % \
localdstdir
os.makedirs(localdstdir)
srchosts = hosts
else:
# eliminate cases where src and dst are same path on same host
# abssrc is where transfer would come from is this host is
# among the remote hosts
etcedir = self._config.get('etce', 'WORK_DIRECTORY')
abssrc = os.path.join(etcedir, remotesubdir)
# figure out absolute name of local destination
cwd = os.getcwd()
os.chdir(localdstdir)
absroot = os.getcwd()
os.chdir(cwd)
absdst = os.path.join(absroot, os.path.basename(remotesubdir))
for host in hosts:
if self.sourceisdestination(host, abssrc, absdst):
print ' Skipping host "%s". Source and destination are the same.' % host
continue
srchosts.append(host)
if not srchosts:
# No hosts to pull files from
return
# prep the items to fetch - tar them up and get their names
retvals = self.execute('utils prepfiles %s' % remotesrc, srchosts)
tarfiles = {}
for host in retvals:
if retvals[host].retval['result'] is not None:
tarfiles[host] = retvals[host].retval['result']
if not tarfiles:
print ' Warning: no files to transfer.'
return
# Create GetThread for the hosts that have a tarfile to transfer
threads = [ GetThread(self._connection_dict[host],
tfile,
os.path.join('/tmp',os.path.basename(tfile)),
host) for host,tfile in tarfiles.items() ]
for t in threads:
t.start()
for t in threads:
t.join()
# extract the tarfiles to the dst directory
threads = []
for h,tfile in tarfiles.items():
ltf = os.path.join('/tmp', os.path.basename(tfile))
if not os.path.exists(ltf) or not os.path.isfile(ltf):
raise RuntimeError('%s does not exist' % ltf)
tf = None
try:
tf = tarfile.open(ltf, 'r:gz')
tf.extractall(localdstdir)
command = 'etce-field-exec platform rmfile %s' % tfile
if self._envfile is not None:
command = '. %s; %s' % (self._envfile, command)
# also set up a thread to remove the tarfile on remotes
threads.append(ExecuteThread(self._connection_dict[host],
command,
host))
finally:
if not tf is None:
tf.close()
os.remove(ltf)
# execute the remove threads
for t in threads:
t.start()
# collect the return objects and monitor for exception
returnobjs = {}
exception = False
for t in threads:
t.join()
returnobjs[t.name] = t.returnobject()
if returnobjs[t.name].retval['isexception']:
exception = True
# raise an exception if any return object is an exception
if exception:
raise ETCEExecuteException(returnobjs)
def _normalize_remotesrc(self, remotesubdir):
subdirre = re.compile(r'\w+(?:/\w*)*')
if not subdirre.match(remotesubdir):
raise ValueError('Error: %s is not a valid source' % remotesubdir)
tmpsubdir = remotesubdir
while tmpsubdir.rfind('/') == (len(tmpsubdir) - 1):
tmpsubdir = tmpsubdir[:-1]
return tmpsubdir
def _normalize_remotedst(self, remotesubdir):
subdir = remotesubdir.strip()
if len(subdir) == 0 or subdir == '.':
return '.'
subdirre = re.compile(r'(?:\./)?(\w+/?)+')
match = subdirre.match(subdir)
if not match:
raise ValueError('Error: %s is not a valid destination' % remotesubdir)
if subdir[-1] == '/':
subdir == subdir[:-1]
if subdir[0] == '.':
subdir = subdir[2:]
# '..' not permitted in destination
if '..' in subdir.split('/'):
raise ValueError('Error: ".." not permitted in destination path')
# for simplicity, disallow '.' in remotedst also
if '.' in subdir.split('/'):
raise ValueError('Error: "." not permitted in multi-level destination path')
return subdir
def _normalize_split_localsubdir(self, localsubdir):
srcbase = os.path.basename(localsubdir)
srcdir = os.path.dirname(localsubdir)
# disallow . or .. as srcbase or in srcdir
if srcbase == '..' or srcbase == '.':
raise ValueError('Error: src cannot be ".." or "."')
if len(srcbase) == 0:
raise ValueError('Error: No source specified')
if '..' in srcdir.split('/'):
raise ValueError('Error: ".." not permitted in src')
if '.' in srcdir.split('/'):
raise ValueError('Error: "." not permitted is src')
return srcdir,srcbase
def close(self):
for host in self._connection_dict:
self._connection_dict[host].close()
class SSHClient(etce.fieldclient.FieldClient):
RETURNVALUE_OPEN_DEMARCATOR = '***********ETCESSH_RETURN_VALUE_START********************'
RETURNVALUE_CLOSE_DEMARCATOR = '***********ETCESSH_RETURN_VALUE_STOP********************'
def __init__(self, hosts, **kwargs):
etce.fieldclient.FieldClient.__init__(self, hosts)
self._connection_dict = {}
self._execute_threads = []
# ssh authentication is revised (5/7/2019):
#
# As tested against paramiko 1.16
#
# User must specify the ssh key file to use for authentication. They
# can specify the key file explicitly with the sshkey parameter -
# if the filename is not absolute, it is assumed to be a file located
# in ~/.ssh. If sshkey is None, try to determine the key file from
# ~/.ssh/config. If that also fails, check for the default ssh rsa
# key ~/.ssh/id_rsa and attempt to use that.
#
# paramiko also allows provides a paramiko.agent.Agent class for
# querying a running ssh-agent for its loaded keys. The agent
# agent can be used:
#
# 1. by calling connect with allow_agent = True (the default)
# 2. by calling Agent().get_keys() and passing to connect as pkey
#
# In the first case, the connect call selects the first key found
# in the running agent and prompts for a passphrase - without indicating
# the key it is prompting for. In the second case, the only identifying
# information that can be obtained from an agent returned key object is
# its md5 fingerprint - which is correct but not convenient for
# helping the user select and identify the agent key to use. For these
# reasons, ignore the agent for authentication and make the user identify
# the key file(s) to use - preferable via there .ssh/config file.
user = kwargs.get('user', None)
port = kwargs.get('port', None)
policystr = kwargs.get('policy', 'reject')
sshkey = kwargs.get('sshkey', None)
user_specified_key_file = None
if sshkey:
if sshkey[0] == '/':
user_specified_key_file = sshkey
else:
user_specified_key_file = os.path.expanduser(
os.path.join('~/.ssh', sshkey))
if not os.path.exists(user_specified_key_file):
raise FieldConnectionError(
'sshkey "%s" doesn\'t exist. Quitting.' % \
user_specified_key_file)
self._envfile = kwargs.get('envfile', None)
self._config = ConfigDictionary()
ssh_config_file = os.path.expanduser('~/.ssh/config')
ssh_config = None
if os.path.exists(ssh_config_file):
ssh_config = paramiko.SSHConfig()
ssh_config.parse(open(ssh_config_file))
authenticated_keys = {}
policy = RejectPolicy
if policystr == 'warning':
policy = WarningPolicy
elif policystr == 'autoadd':
policy = AutoAddPolicy
policy = self._set_unknown_hosts_policy(hosts, port, ssh_config,
policy)
for host in hosts:
host_config = None
if ssh_config:
host_config = ssh_config.lookup(host)
host_user = os.path.basename(os.path.expanduser('~'))
if user:
host_user = user
elif host_config:
host_user = host_config.get('user', host_user)
host_port = 22
if port:
host_port = port
elif host_config:
host_port = host_config.get('port', host_port)
host_key_filenames = []
if user_specified_key_file:
host_key_filenames = [user_specified_key_file]
elif host_config:
host_key_filenames = host_config.get('identityfile',
host_key_filenames)
if not host_key_filenames:
default_rsa_keyfile = os.path.join(os.path.expanduser('~'),
'.ssh', 'id_rsa')
if os.path.exists(default_rsa_keyfile) and os.path.isfile(
default_rsa_keyfile):
host_key_filenames = [default_rsa_keyfile]
else:
message = 'Unable to find an RSA SSH key associated with host "%s". '\
'Either:\n\n' \
' 1) specify a key using the "sshkey" option\n' \
' 2) add a "Host" rule to your ~/.ssh/config file identifying the key\n' \
' 3) create a default RSA key ~/.ssh/id_rsa".\n\n' \
'Quitting.' % host
raise FieldConnectionError(message)
try:
pkey = None
for host_key_file in host_key_filenames:
if host_key_file in authenticated_keys:
pkey = authenticated_keys[host_key_file]
else:
pkey = None
try:
# Assume key is not passphrase protected first
pkey = RSAKey.from_private_key_file(
host_key_file, None)
except PasswordRequiredException as pre:
# if that fails, prompt for passphrase
pkey = RSAKey.from_private_key_file(
host_key_file,
getpass.getpass('Enter passphrase for %s: ' %
host_key_file))
authenticated_keys[host_key_file] = pkey
break
if not pkey:
message = 'Unable to connect to host "%s", cannot authenticate. ' \
'Quitting.' % host,
raise FieldConnectionError(message)
client = paramiko.SSHClient()
client.load_system_host_keys()
client.load_host_keys(os.path.expanduser('~/.ssh/known_hosts'))
client.set_missing_host_key_policy(policy())
client.connect(hostname=host,
username=host_user,
port=int(host_port),
pkey=pkey,
allow_agent=False)
self._connection_dict[host] = client
except socket.gaierror as ge:
message = '%s "%s". Quitting.' % (ge.strerror, host)
raise FieldConnectionError(message)
except paramiko.ssh_exception.NoValidConnectionsError as e:
raise FieldConnectionError('Unable to connect to host "%s", ' \
'NoValidConnectionsError. Quitting.' % host)
except Exception as e:
raise FieldConnectionError(e)
def sourceisdestination(self, host, srcfilename, dstfilename):
if srcfilename == dstfilename:
p = Platform()
if p.hostname_has_local_address(host):
return True
return False
def put(self,
localsrc,
remotedst,
hosts,
doclobber=False,
minclobberdepth=2):
# this is intended to work like 'cp -R src dstdir' where src
# can be a file name or directory name (relative or absolute path)
# and destination is always a directory. dstdir can be relative
# or absolute also, but it is rooted at WORK_DIRECTORY on the receiving
# nodes. Examples:
#
# src is a file
# src=foo.txt, dst='/': moves foo.txt to WORK_DIRECTORY/foo.txt
# src=/home/bar/foo.txt, dst='/': moves foo.txt to WORK_DIRECTORY/foo.txt
# src is a directory
# src=./foo/bar, dst='bar': moves bar to WORK_DIRECTORY/bar/bar
# src=/opt/foo/bar, dst='bar': moves bar to WORK_DIRECTORY/bar/bar
#
remotesubdir = self._normalize_remotedst(remotedst)
srcdir, srcbase = self._normalize_split_localsubdir(localsrc)
if not os.path.exists(localsrc):
raise RuntimeError('Error: "%s" doesn\'t exist. Quitting.' %
srcbase)
srctar = ''
cwd = os.getcwd()
try:
# move to directory containing the src
if len(srcdir) > 0:
os.chdir(srcdir)
# eliminate cases where src and dst are same path on same host
# this is local directory that we are putting
tmppath = os.getcwd()
abssrc = os.path.join(tmppath, srcbase)
# this is where this node would resolve the put location if it
# were a receiver
etcedir = self._config.get('etce', 'WORK_DIRECTORY')
tmpsubdir = remotesubdir
if tmpsubdir == '.':
tmpsubdir = ''
absdst = os.path.join(etcedir, tmpsubdir, srcbase)
dsthosts = []
# only move when not same host and same directory
for host in hosts:
if self.sourceisdestination(host, abssrc, absdst):
print(
'Skipping host "%s". Source and destination are the same.'
% host)
continue
dsthosts.append(host)
# continue if we have at least one non self host
if len(dsthosts) == 0:
return
# first step, move the tar file to remote /tmp
srctar = etce.utils.tarzip([srcbase])
abssrctar = os.path.join(os.getcwd(), srctar)
absdsttar = os.path.join('/tmp', srctar)
threads = []
for host in dsthosts:
# create name of tar file on destination
if host in self._connection_dict:
threads.append(
PutThread(self._connection_dict[host], abssrctar,
absdsttar, host))
for t in threads:
t.start()
for t in threads:
t.join()
# now extract tarfile on dst hosts to the output path
deletetar = True
command = 'utils untarzip %s %s %s %d %s' % (
absdsttar, remotesubdir, str(doclobber), minclobberdepth,
str(deletetar))
self.execute(command, hosts)
finally:
if os.path.exists(srctar):
os.remove(srctar)
os.chdir(cwd)
def interrupt(self):
for thread in self._execute_threads:
thread.interrupt()
def execute(self, commandstr, hosts, workingdir=None):
# execute an etce command over ssh
self._execute_threads = []
fullcommandstr = ''
if self._envfile is not None:
fullcommandstr += '. %s; ' % self._envfile
fullcommandstr += 'etce-field-exec '
if not workingdir is None:
fullcommandstr += '--cwd %s ' % workingdir
fullcommandstr += commandstr
for host in hosts:
host_fullcommandstr = 'export HOSTNAME=%s; ' % host + fullcommandstr
if host in self._connection_dict:
self._execute_threads.append(
ExecuteThread(self._connection_dict[host],
host_fullcommandstr, host))
# start the threads
for t in self._execute_threads:
t.start()
# collect the return objects and monitor for exception
returnobjs = {}
exception = False
keyboard_interrupt = False
for t in self._execute_threads:
# cycle on join to allow keyboard interrupts
# to occur immediately
while t.isAlive():
t.join(5.0)
returnobjs[t.name] = t.returnobject()
if returnobjs[t.name].retval['isexception']:
exception = True
elif returnobjs[t.name].keyboard_interrupt:
keyboard_interrupt = True
# raise an exception if any return object is an exception
if exception:
raise ETCEExecuteException(returnobjs)
if keyboard_interrupt:
raise KeyboardInterrupt()
# return in error free case
return returnobjs
def collect(self, remotesrc, localdstdir, hosts):
if len(hosts) == 0:
print(' Warning: no hosts.')
return
remotesubdir = self._normalize_remotesrc(remotesrc)
srchosts = []
# make the destination if it does not exist
if not os.path.exists(localdstdir) or not os.path.isdir(localdstdir):
print('Warning: local directory "%s" does not exist. Will attempt to make.' % \
localdstdir)
os.makedirs(localdstdir)
srchosts = hosts
else:
# eliminate cases where src and dst are same path on same host
# abssrc is where transfer would come from is this host is
# among the remote hosts
etcedir = self._config.get('etce', 'WORK_DIRECTORY')
abssrc = os.path.join(etcedir, remotesubdir)
# figure out absolute name of local destination
cwd = os.getcwd()
os.chdir(localdstdir)
absroot = os.getcwd()
os.chdir(cwd)
absdst = os.path.join(absroot, os.path.basename(remotesubdir))
for host in hosts:
if self.sourceisdestination(host, abssrc, absdst):
print(
' Skipping host "%s". Source and destination are the same.'
% host)
continue
srchosts.append(host)
if not srchosts:
# No hosts to pull files from
return
# prep the items to fetch - tar them up and get their names
retvals = self.execute('utils prepfiles %s' % remotesrc, srchosts)
tarfiles = {}
for host in retvals:
if retvals[host].retval['result'] is not None:
tarfiles[host] = retvals[host].retval['result']
if not tarfiles:
print(' Warning: no files to transfer.')
return
# Retrieve and extract data from each remote host
removers = []
for host, tfile in tarfiles.items():
host_is_local = False
if os.path.exists(tfile):
# ignore file if it is already on local machine
host_is_local = True
getter = GetThread(self._connection_dict[host], tfile,
os.path.join('/tmp', os.path.basename(tfile)),
host)
getter.start()
getter.join()
ltf = os.path.join('/tmp', os.path.basename(tfile))
if not os.path.exists(ltf) or not os.path.isfile(ltf):
raise RuntimeError('%s does not exist' % ltf)
tf = None
try:
command = 'etce-field-exec platform rmfile %s' % tfile
if self._envfile is not None:
command = '. %s; %s' % (self._envfile, command)
# also set up a thread to remove the tarfile on remotes
removers.append(
ExecuteThread(self._connection_dict[host], command, host))
absolute_localdstdir = localdstdir
if not absolute_localdstdir[0] == '/':
absolute_localdstdir = os.path.join(localdstdir, remotesrc)
if host_is_local and os.path.exists(absolute_localdstdir):
print('Skipping collection from local host "%s".' % host)
else:
print('Collecting files from host "%s" to "%s".' %
(host, localdstdir))
tf = tarfile.open(ltf, 'r:gz')
tf.extractall(localdstdir)
tf.close()
finally:
os.remove(ltf)
# execute the remove threads
for t in removers:
t.start()
# collect the return objects and monitor for exception
returnobjs = {}
exception = False
for t in removers:
t.join()
returnobjs[t.name] = t.returnobject()
if returnobjs[t.name].retval['isexception']:
exception = True
# raise an exception if any return object is an exception
if exception:
raise ETCEExecuteException(returnobjs)
def _normalize_remotesrc(self, remotesubdir):
subdirre = re.compile(r'\w+(?:/\w*)*')
if not subdirre.match(remotesubdir):
raise ValueError('Error: %s is not a valid source' % remotesubdir)
tmpsubdir = remotesubdir
while tmpsubdir.rfind('/') == (len(tmpsubdir) - 1):
tmpsubdir = tmpsubdir[:-1]
return tmpsubdir
def _normalize_remotedst(self, remotesubdir):
subdir = remotesubdir.strip()
if len(subdir) == 0 or subdir == '.':
return '.'
subdirre = re.compile(r'(?:\./)?(\w+/?)+')
match = subdirre.match(subdir)
if not match:
raise ValueError('Error: %s is not a valid destination' %
remotesubdir)
if subdir[-1] == '/':
subdir == subdir[:-1]
if subdir[0] == '.':
subdir = subdir[2:]
# '..' not permitted in destination
if '..' in subdir.split('/'):
raise ValueError('Error: ".." not permitted in destination path')
# for simplicity, disallow '.' in remotedst also
if '.' in subdir.split('/'):
raise ValueError(
'Error: "." not permitted in multi-level destination path')
return subdir
def _normalize_split_localsubdir(self, localsubdir):
srcbase = os.path.basename(localsubdir)
srcdir = os.path.dirname(localsubdir)
# disallow . or .. as srcbase or in srcdir
if srcbase == '..' or srcbase == '.':
raise ValueError('Error: src cannot be ".." or "."')
if len(srcbase) == 0:
raise ValueError('Error: No source specified')
if '..' in srcdir.split('/'):
raise ValueError('Error: ".." not permitted in src')
if '.' in srcdir.split('/'):
raise ValueError('Error: "." not permitted is src')
return (srcdir, srcbase)
def _set_unknown_hosts_policy(self, hosts, port, ssh_config, policy):
known_hosts_filename = os.path.expanduser('~/.ssh/known_hosts')
if not os.path.exists(known_hosts_filename) or \
not os.path.isfile(known_hosts_filename):
raise FieldConnectionError(
'Error: ~/.ssh/known_hosts file does not exist, ' \
'please create it.')
all_host_keys = paramiko.util.load_host_keys(known_hosts_filename)
# build list of hosts that don't have an ssh-rsa entry in known_hosts
unknown_hosts = []
for host in hosts:
host_config = None
if ssh_config:
host_config = ssh_config.lookup(host)
host_port = 22
if port:
host_port = port
elif host_config:
host_port = host_config.get('port', host_port)
# try host and [host]:port as keys to check in known_hosts as
# format depends on ssh version
keys_to_check = set([host, '[%s]:%d' % (host, int(host_port))])
found_keys = keys_to_check.intersection(set(all_host_keys.keys()))
if not found_keys:
unknown_hosts.append(host)
else:
host_keys = all_host_keys.get(sorted(found_keys)[0], None)
rsakey = host_keys.get('ssh-rsa', None)
if not rsakey:
unknown_hosts.append(host)
# if we found an unknown host and we're configured to reject, ask user for permission to add
if unknown_hosts and (policy == RejectPolicy):
unknown_hosts_str = '{' + ', '.join(sorted(unknown_hosts)) + '}'
response = raw_input(
'Unknown hosts: %s. Add to known_hosts (Y/N) [N]? ' %
unknown_hosts_str)
if not response.upper() == 'Y':
print('Quitting.', file=sys.stderr)
exit(1)
return AutoAddPolicy
return policy
def close(self):
for host in self._connection_dict:
self._connection_dict[host].close()
def startfield(args):
this_hostname = Platform().hostname()
config = ConfigDictionary()
workdir = config.get('etce', 'WORK_DIRECTORY')
workdir = os.getenv('WORKDIR', workdir)
if not os.path.exists(workdir):
raise DOCKERError('ETCE WORK_DIRECTORY "%s" not found. ' \
'Please create it before starting.' % workdir)
if args.dockerplanfile:
dockerplanfile = args.dockerplanfile
else:
dockerplanfile = os.path.join(workdir, 'dockerplan.xml')
plandoc = DOCKERPlanFileDoc(dockerplanfile)
# lockfile
lockfilename = \
os.path.join(workdir, 'etce.docker.lock')
if os.path.isfile(lockfilename):
err = 'Detected an active docker field with root at: %s. ' \
'Run "etce-docker stop" first.' % \
plandoc.docker_root_directory(this_hostname)
raise DOCKERError(err)
cidr = os.getenv('CIDR', '10.99.0.0/16')
containers = []
for hostname, _ in plandoc.hostnames():
for container in plandoc.containers(hostname):
for bridgename, interfaceparams in container.interfaces.items():
if IPAddress(interfaceparams['ipv4']) in IPNetwork(cidr):
containers.append(
(container.docker_name, interfaceparams['ipv4']))
break
ipexist = []
for _, ip in containers:
ipexist.append(ip)
my_ip = ''
for ip in IPNetwork(cidr)[1:]:
if not str(ip) in ipexist:
my_ip = str(ip)
break
my_ip = my_ip + '/' + cidr.split('/')[1]
# write to /etc/hosts in container/machine controller all external ip
writehosts(plandoc, containers)
hostfile = \
os.path.join(workdir, 'hosts')
if not args.dryrun:
shutil.copy(dockerplanfile, lockfilename)
shutil.copy('/etc/hosts', hostfile)
startdockers(plandoc, args.writehosts, args.forcedockerroot, args.dryrun)
other_hosts = []
for hostname, ip in plandoc.hostnames():
if hostname != (this_hostname and 'localhost'):
other_hosts.append(hostname)
# start containers on other hosts, if any
if other_hosts:
client = None
try:
client = ClientBuilder().build(\
other_hosts,
user=args.user,
port=args.port,
password=args.password)
# push the file and execute
client.put(dockerplanfile, '.', other_hosts, doclobber=True)
# push the file
client.put('/etc/hosts', '.', other_hosts, doclobber=True)
# on the destination node the netplan file gets pushed to the
# ETCE WORK_DIRECTORY
command = 'dockermanager startdockers %s writehosts=%s forcedockerroot=%s' \
% (os.path.basename(dockerplanfile),
args.writehosts,
args.forcedockerroot)
ret = client.execute(command, other_hosts)
for k in ret:
print '[%s] return: %s' % (k, ret[k].retval['result'])
finally:
if client:
client.close()
# A valid ETCE Test Directory.
TESTDIRECTORY = os.path.join(workdir, 'pub-tdmact')
# The output directory to place the built Test Directory.
TESTROOT = os.path.join(
workdir, TESTDIRECTORY + '_' + etce.utils.timestamp())
os.system('etce-test publish %s %s --verbose' %
(TESTDIRECTORY, TESTROOT))
# A user tag to prepend to the name of each test result directory.
TESTPREFIX = 'tdmact'
# Run scenario order steps
#if not args.collect:
os.system(
'etce-test run --user root --policy autoadd -v --kill before --nocollect %s %s %s'
% (TESTPREFIX, HOSTFILE, TESTROOT))
class WrapperLoader(object):
def __init__(self):
self._config = ConfigDictionary()
def wrapperpaths(self):
return self._config.get('etce', 'WRAPPER_DIRECTORY').split(':')
def loadwrappers(self, wrapperpath):
wrapperinstances = {}
for cwd, dirnames, filenames in os.walk(wrapperpath):
for wrapperfile in filenames:
try:
wrapperfile = os.path.join(cwd, wrapperfile.split('.')[0])
fullwrappername = \
os.path.relpath(wrapperfile, wrapperpath)
wrapper = self._load_module(fullwrappername, None)
if wrapper is not None:
basename = wrapper.__name__.split('/')[-1]
candidateclassname = basename.upper()
classinstance = None
for key in wrapper.__dict__:
if key.upper() == candidateclassname:
candidateclass = wrapper.__dict__[key]
if callable(candidateclass):
key = fullwrappername.replace(os.sep, '.')
wrapperinstances[key] = (wrapperpath,
candidateclass())
except:
continue
return wrapperinstances
def loadwrapper(self, wrappername, packageprefixfilter=(None, )):
wrapper = None
for packagename in packageprefixfilter:
wrapper = self._load_module(wrappername, packagename)
if wrapper is not None:
basename = wrapper.__name__.split('/')[-1]
candidateclassname = basename.upper()
classinstance = None
for key in wrapper.__dict__:
if key.upper() == candidateclassname:
candidateclass = wrapper.__dict__[key]
if callable(candidateclass):
return candidateclass()
message = 'No wrapper "%s" found' % wrappername
raise RuntimeError(message)
def _load_module(self, wrappername, packageprefix):
wrapper = None
if packageprefix:
wrappername = packageprefix + '.' + wrappername
etcewrapper = wrappername.replace('.', os.sep)
try:
f,pathname,description = \
imp.find_module(etcewrapper, self.wrapperpaths())
wrapper = imp.load_module(etcewrapper, f, pathname, description)
except:
pass
return wrapper
