示例#1
0
文件: tools.py 项目: zaheerm/feat
def standalone(script, options=[]):

    def define_options(extra_options):
        c = config.parse_service_config()

        parser = optparse.OptionParser()
        parser.add_option('--dbhost', '-H', action='store', dest='hostname',
                          type='str', help='hostname of the database',
                          default=c.db.host)
        parser.add_option('--dbname', '-n', action='store', dest='dbname',
                          type='str', help='name of database to use',
                          default=c.db.name)
        parser.add_option('--dbport', '-P', action='store', dest='dbport',
                          type='str', help='port of database to use',
                          default=c.db.port)

        for option in extra_options:
            parser.add_option(option)
        return parser

    def _error_handler(fail):
        error.handle_failure('script', fail, "Finished with exception: ")

    log.init()
    log.FluLogKeeper.set_debug('4')

    parser = define_options(options)
    opts, args = parser.parse_args()

    db = config.parse_service_config().db
    db.host, db.port, db.name = opts.hostname, opts.dbport, opts.dbname

    with dbscript(db) as d:
        d.addCallback(script, opts)
        d.addErrback(_error_handler)
示例#2
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文件: bootstrap.py 项目: zaheerm/feat
    def __enter__(self):
        tee = log.init()
        tee.add_keeper('buffer', log.LogBuffer(limit=10000))
        self._parse_opts()

        if self.opts.debug:
            log.FluLogKeeper.set_debug(self.opts.debug)
        self.agency = self._run_agency()
        return self
示例#3
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文件: tools.py 项目: f3at/feat
def standalone(script, options=[]):

    def _error_handler(fail):
        error.handle_failure('script', fail, "Finished with exception: ")

    # call log.init before define_option, which parses the service config
    # and can fail
    log.init()
    parser = define_standalone_options(optparse.OptionParser(), options)
    opts, args = parser.parse_args()
    log.FluLogKeeper.set_debug(opts.log)

    db = config.parse_service_config().db
    db.host, db.port, db.name = opts.db_host, opts.db_port, opts.db_name
    db.username, db.password = opts.db_username, opts.db_password
    db.https = opts.db_https

    with dbscript(db) as d:
        d.addCallback(script, opts)
        d.addErrback(_error_handler)
示例#4
0
文件: tools.py 项目: zaheerm/feat
def script():
    log.init()
    log.FluLogKeeper.set_debug('4')

    opts, args = parse_options()
    c = config.DbConfig(host=opts.db_host, port=opts.db_port,
                        name=opts.db_name)
    with dbscript(c) as d:

        def body(connection):
            documents = applications.get_initial_data_registry().itervalues()
            log.info('script', "I will push %d documents.",
                     len(list(documents)))
            d = create_db(connection)
            d.addCallback(defer.drop_param, push_initial_data, connection,
                          opts.force)
            if opts.migration:
                d.addCallback(defer.drop_param, migration_script, connection)
            return d

        d.addCallback(body)
示例#5
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文件: common.py 项目: f3at/feat
from feat.interface.generic import ITimeProvider
from feat.agencies.messaging.interface import ISink
from feat.agents.application import feat


from . import factories
from twisted.trial.unittest import FailTest

try:
    _getConfig = trial.getConfig
except AttributeError:
    # trial.getConfig() is only available when using flumotion-trial
    _getConfig = dict

log.init('test.log')


def delay(value, delay):
    '''Returns a deferred whose callback will be triggered
    after the specified delay with the specified value.'''
    d = defer.Deferred()
    time.callLater(delay, d.callback, value)
    return d


def break_chain(value):
    '''Breaks a deferred callback chain ensuring the rest will be called
    asynchronously in the next reactor loop.'''
    return delay_callback(value, 0)
示例#6
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文件: bootstrap.py 项目: f3at/feat
def bootstrap(parser=None, args=None, descriptors=None):
    """Bootstrap a feat process, handling command line arguments.
    @param parser: the option parser to use; more options will be
        added to the parser; if not specified or None
        a new one will be created
    @type  parser: optparse.OptionParser or None
    @param args: the command line arguments to parse; if not specified
        or None, sys.argv[1:] will be used
    @type  args: [str()] or None
    @param descriptors: the descriptors of the agent to starts in addition
        of the host agent; if not specified or None
        no additional agents will be started
    @type  descriptors: [Descriptor()] or None

    @return: the deferred of the bootstrap chain
    @rtype:  defer.Deferred()"""

    tee = log.init()
    # The purpose of having log buffer here, is to be able to dump the
    # log lines to a journal after establishing connection with it.
    # This is done in stage_configure() of net agency Startup procedure.
    tee.add_keeper('buffer', log.LogBuffer(limit=10000))

    # use the resolver from twisted.names instead of the default
    # the reason for this is that ThreadedResolver behaves strangely
    # after the reconnection - raises the DNSLookupError for names
    # which have been resolved while there was no connection
    resolver.installResolver(reactor)

    if parser is None:
        parser = optparse.OptionParser()
        options.add_options(parser)
    try:
        opts, args = check_options(*parser.parse_args(args))
    except Exception as e:
        error.handle_exception('bootstrap', e, "Failed parsing config")
        sys.exit(1)

    if opts.standalone:
        cls = standalone.Agency
    else:
        cls = net_agency.Agency
    config = config_module.Config()
    config.load(os.environ, opts)
    agency = cls(config)

    applications.load('feat.agents.application', 'feat')
    applications.load('feat.gateway.application', 'featmodels')

    d = defer.Deferred()
    reactor.callWhenRunning(d.callback, None)

    if not opts.standalone:
        # specific to running normal agency

        hostdef = opts.hostdef

        if opts.hostres or opts.hostcat or opts.hostports:
            from feat.agents.common import host
            hostdef = host.HostDef()
            for resdef in opts.hostres:
                parts = resdef.split(":", 1)
                name = parts[0]
                value = 1
                if len(parts) > 1:
                    try:
                        value = int(parts[1])
                    except ValueError:
                        raise OptionError(
                            "Invalid host resource: %s" % resdef), \
                            None, sys.exc_info()[2]
                hostdef.resources[name] = value

            for catdef in opts.hostcat:
                name, value = check_category(catdef)
                hostdef.categories[name] = value

            if opts.hostports:
                hostdef.ports_ranges = dict()
            for ports in opts.hostports:
                group, start, stop = tuple(ports.split(":"))
                hostdef.ports_ranges[group] = (int(start), int(stop))

        agency.set_host_def(hostdef)

        d.addCallback(defer.drop_param, agency.initiate)
        for desc, kwargs, name in opts.agents:
            d.addCallback(defer.drop_param, agency.add_static_agent,
                          desc, kwargs, name)
    else:
        # standalone specific
        kwargs = opts.standalone_kwargs or dict()
        to_spawn = opts.agent_id or opts.agents[0][0]
        d.addCallback(defer.drop_param, agency.initiate)
        d.addCallback(defer.drop_param, agency.spawn_agent,
                      to_spawn, **kwargs)
    queue = None
    if opts.agency_daemonize:
        import multiprocessing
        queue = multiprocessing.Queue()

    d.addCallbacks(_bootstrap_success, _bootstrap_failure,
                   callbackArgs=(queue, ), errbackArgs=(agency, queue))

    if not opts.agency_daemonize:
        reactor.run()
    else:
        logname = "%s.%s.log" % ('feat', agency.agency_id)
        logfile = os.path.join(config.agency.logdir, logname)
        log.info("bootstrap", "Daemon processs will be logging to %s",
                 logfile)

        try:
            pid = os.fork()
        except OSError, e:
            sys.stderr.write("Failed to fork: (%d) %s\n" %
                             (e.errno, e.strerror))
            os._exit(1)

        if pid > 0:
            # original process waits for information about what status code
            # to use on exit
            log.info('bootstrap',
                     "Waiting for deamon process to intialize the agency")
            try:
                exit_code, reason = queue.get(timeout=20)
            except multiprocessing.queues.Empty:
                log.error('bootstrap',
                          "20 seconds timeout expires waiting for agency"
                          " in child process to initiate.")
                os._exit(1)
            else:
                log.info('bootstrap', "Process exiting with %d status",
                         exit_code)
                if exit_code:
                    log.info('bootstrap', 'Reason for failure: %s', reason)
                sys.exit(exit_code)
        else:
            # child process performs second fork
            try:
                pid = os.fork()
            except OSError, e:
                sys.stderr.write("Failed to fork: (%d) %s\n" %
                                 (e.errno, e.strerror))
                os._exit(1)
            if pid > 0:
                # child process just exits
                sys.exit(0)
            else:
                # grandchild runs the reactor and logs to an external log file
                log.FluLogKeeper.redirect_to(logfile, logfile)
                reactor.run()
示例#7
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文件: web.py 项目: f3at/feat
#!/usr/bin/python
from twisted.internet import reactor

from flt.agents.hapi import dummy, web
from feat.common import log


log.init()

agent = dummy.DummyAgent()
port = 8800
server = web.ServerWrapper(agent, port)
server.start()

print "Listening on http://127.0.0.1:%d" % port

reactor.run()