def test_unix_server(self):
        sockpath = os.path.join(os.getcwd(),
                                'test.{0}.sock'.format(os.getpid()))
        sockurl = 'unix://' + sockpath

        context = RpcContext()
        context.register_service('test', TestService)
        server = Server()
        server.rpc = context
        server.start(sockurl)
        threading.Thread(target=server.serve_forever, daemon=True).start()

        # Spin until server is ready
        while not os.path.exists(sockpath):
            time.sleep(0.1)

        client = Client()
        client.connect(sockurl)
        self.assertTrue(client.connected)
        self.assertEqual(client.call_sync('test.hello', 'freenas'),
                         'Hello World, freenas')

        client.disconnect()
        server.close()
        os.unlink(sockpath)
def main(name, *args):
    connection = Client()
    connection.connect('127.0.0.1')
    connection.login_service('ups')

    connection.emit_event('service.ups.signal', {
        'name': name,
        'type': os.environ['NOTIFYTYPE'],
    })

    connection.disconnect()
Beispiel #3
0
def main(*args):
    connection = Client()
    connection.connect('127.0.0.1')
    connection.login_service('smtp')

    parser = argparse.ArgumentParser(description='Process email')
    parser.add_argument('-i', dest='strip_leading_dot', action='store_false',
                        default=True, help='see sendmail(8) -i')
    parser.add_argument('-t', dest='parse_recipients', action='store_true',
                        default=False,
                        help='parse recipients from message')
    parser.usage = ' '.join(parser.format_usage().split(' ')[1:-1])
    parser.usage += ' [email_addr|user] ..'
    args, to_addrs = parser.parse_known_args()
    if not to_addrs and not args.parse_recipients:
        parser.exit(message=parser.format_usage())
    msg = sys.stdin.read()

    em_parser = email.parser.Parser()
    em = em_parser.parsestr(msg)
    if args.parse_recipients:
        # Strip away the comma based delimiters and whitespace.
        to_addrs = map(str.strip, em.get('To').split(','))

    if not to_addrs or not to_addrs[0]:
        to_addrs = ['root']

    margs = {}
    margs['extra_headers'] = dict(em)
    margs['extra_headers'].update({
        'X-Mailer': 'FreeNAS',
        'X-FreeNAS-Host': socket.gethostname(),
    })
    margs['subject'] = em.get('Subject')

    if em.is_multipart():
        margs['attachments'] = filter(
            lambda part: part.get_content_maintype() != 'multipart',
            em.walk()
        )
        margs['message'] = (
            'This is a MIME formatted message.  If you see '
            'this text it means that your email software '
            'does not support MIME formatted messages.')
    else:
        margs['message'] = ''.join(email.iterators.body_line_iterator(em))

    if to_addrs:
        margs['to'] = to_addrs

    connection.call_sync('mail.send', margs)
    connection.disconnect()
def main(*args):
    connection = Client()
    connection.connect("127.0.0.1")
    connection.login_service("smtp")

    parser = argparse.ArgumentParser(description="Process email")
    parser.add_argument("-i", dest="strip_leading_dot", action="store_false", default=True, help="see sendmail(8) -i")
    parser.add_argument(
        "-t", dest="parse_recipients", action="store_true", default=False, help="parse recipients from message"
    )
    parser.usage = " ".join(parser.format_usage().split(" ")[1:-1])
    parser.usage += " [email_addr|user] .."
    args, to_addrs = parser.parse_known_args()
    if not to_addrs and not args.parse_recipients:
        parser.exit(message=parser.format_usage())
    msg = sys.stdin.read()

    em_parser = email.parser.Parser()
    em = em_parser.parsestr(msg)
    if args.parse_recipients:
        # Strip away the comma based delimiters and whitespace.
        to_addrs = map(str.strip, em.get("To").split(","))

    if not to_addrs or not to_addrs[0]:
        to_addrs = ["root"]

    margs = {}
    margs["extra_headers"] = dict(em)
    margs["extra_headers"].update({"X-Mailer": "FreeNAS", "X-FreeNAS-Host": socket.gethostname()})
    margs["subject"] = em.get("Subject")

    if em.is_multipart():
        margs["attachments"] = filter(lambda part: part.get_content_maintype() != "multipart", em.walk())
        margs["message"] = (
            "This is a MIME formatted message.  If you see "
            "this text it means that your email software "
            "does not support MIME formatted messages."
        )
    else:
        margs["message"] = "".join(email.iterators.body_line_iterator(em))

    if to_addrs:
        margs["to"] = to_addrs

    connection.call_sync("mail.send", margs)
    connection.disconnect()
Beispiel #5
0
class BaseTestCase(unittest.TestCase):
    def __init__(self, methodName):
        super(BaseTestCase, self).__init__(methodName)
        self.context = None

    def setUp(self):
        super(BaseTestCase, self).setUp()

        assert self.context is not None
        self.ssh_client = self.context.ssh_client
        self.client = Client()
        self.client.connect('ws://{0}'.format(self.context.hostname))
        self.client.login_user(self.context.username, self.context.password)
        load_schema_definitions(self.client)

    def tearDown(self):
        self.client.disconnect()

    def ssh_exec(self, command, output=False):
        _, stdout, stderr = self.ssh_client.exec_command(command)
        exitcode = stdout.channel.recv_exit_status()
        if output:
            return exitcode, stdout.read(), stderr.read()

        return exitcode

    def get_params_schema(self, method):
        return get_methods(self.client, method).get('params-schema')

    def get_result_schema(self, method):
        return get_methods(self.client, method).get('results-schema')

    def assertConformsToSchema(self, obj, schema, strict=False):
        errors = verify_schema(schema, obj, strict)
        if errors:
            raise AssertionError(
                'Object {0} does not match {1} schema. Errors: {2}'.format(
                    obj, schema, errors))

    def assertConformsToNamedSchema(self, obj, schema_name, strict=False):
        schema = get_schema(schema_name)
        if not schema:
            raise AssertionError('Schema {0} is unknown'.format(schema_name))
        self.assertConformsToSchema(obj, schema, strict)
Beispiel #6
0
class BaseTestCase(unittest.TestCase):
    def __init__(self, methodName):
        super(BaseTestCase, self).__init__(methodName)
        self.context = None

    def setUp(self):
        super(BaseTestCase, self).setUp()

        assert self.context is not None
        self.ssh_client = self.context.ssh_client
        self.client = Client()
        self.client.connect('ws://{0}'.format(self.context.hostname))
        self.client.login_user(self.context.username, self.context.password)
        load_schema_definitions(self.client)

    def tearDown(self):
        self.client.disconnect()

    def ssh_exec(self, command, output=False):
        _, stdout, stderr = self.ssh_client.exec_command(command)
        exitcode = stdout.channel.recv_exit_status()
        if output:
            return exitcode, stdout.read(), stderr.read()

        return exitcode

    def get_params_schema(self, method):
        return get_methods(self.client, method).get('params-schema')

    def get_result_schema(self, method):
        return get_methods(self.client, method).get('results-schema')

    def assertConformsToSchema(self, obj, schema, strict=False):
        errors = verify_schema(schema, obj, strict)
        if errors:
            raise AssertionError('Object {0} does not match {1} schema. Errors: {2}'.format(obj, schema, errors))

    def assertConformsToNamedSchema(self, obj, schema_name, strict=False):
        schema = get_schema(schema_name)
        if not schema:
            raise AssertionError('Schema {0} is unknown'.format(schema_name))
        self.assertConformsToSchema(obj, schema, strict)
Beispiel #7
0
    def test_back_to_back(self):
        a, b = socket.socketpair()
        self.assertGreaterEqual(a.fileno(), 0)
        self.assertGreaterEqual(b.fileno(), 0)

        c1 = Client()
        c1.standalone_server = True
        c1.enable_server()
        c1.register_service('test', TestService())
        c1.connect('fd://{0}'.format(a.fileno()))
        self.assertTrue(c1.connected)

        c2 = Client()
        c2.connect('fd://{0}'.format(b.fileno()))
        self.assertTrue(c2.connected)
        self.assertEqual(c2.call_sync('test.hello', 'freenas'), 'Hello World, freenas')

        c2.disconnect()
        a.close()
        c1.disconnect()
        b.close()
    def test_back_to_back(self):
        a, b = socket.socketpair()
        self.assertGreaterEqual(a.fileno(), 0)
        self.assertGreaterEqual(b.fileno(), 0)

        c1 = Client()
        c1.standalone_server = True
        c1.enable_server()
        c1.register_service('test', TestService())
        c1.connect('fd://{0}'.format(a.fileno()))
        self.assertTrue(c1.connected)

        c2 = Client()
        c2.connect('fd://{0}'.format(b.fileno()))
        self.assertTrue(c2.connected)
        self.assertEqual(c2.call_sync('test.hello', 'freenas'),
                         'Hello World, freenas')

        c2.disconnect()
        a.close()
        c1.disconnect()
        b.close()
Beispiel #9
0
    def test_unix_server(self):
        sockpath = os.path.join(os.getcwd(), 'test.{0}.sock'.format(os.getpid()))
        sockurl = 'unix://' + sockpath

        context = RpcContext()
        context.register_service('test', TestService)
        server = Server()
        server.rpc = context
        server.start(sockurl)
        threading.Thread(target=server.serve_forever, daemon=True).start()

        # Spin until server is ready
        while not os.path.exists(sockpath):
            time.sleep(0.1)

        client = Client()
        client.connect(sockurl)
        self.assertTrue(client.connected)
        self.assertEqual(client.call_sync('test.hello', 'freenas'), 'Hello World, freenas')

        client.disconnect()
        server.close()
        os.unlink(sockpath)
Beispiel #10
0
class LogdLogHandler(logging.Handler):
    def __init__(self, level=logging.NOTSET, address=None, ident=None):
        super(LogdLogHandler, self).__init__(level)
        self.address = address or 'unix:///var/run/logd.sock'
        self.ident = ident or os.path.basename(sys.executable)
        self.client = Client()
        self.client.connect(self.address)

    def emit(self, record):
        try:
            if not self.client.connected:
                self.client.connect(self.address)

            item = {
                'timestamp': datetime.utcfromtimestamp(record.created),
                'priority': PRIORITY_MAP.get(record.levelno, 'INFO'),
                'message': record.getMessage(),
                'identifier': self.ident,
                'thread': record.threadName,
                'tid': record.thread,
                'module_name': record.name,
                'source_language': 'python',
                'source_file': record.pathname,
                'source_line': record.lineno,
            }

            if record.exc_info:
                item['exception'] = ''.join(
                    traceback.format_exception(*record.exc_info))

            self.client.call_async('logd.logging.push', None, item)
        except:
            self.handleError(record)

    def close(self):
        super(LogdLogHandler, self).close()
        self.client.disconnect()
Beispiel #11
0
class LogdLogHandler(logging.Handler):
    def __init__(self, level=logging.NOTSET, address=None, ident=None):
        super(LogdLogHandler, self).__init__(level)
        self.address = address or 'unix:///var/run/logd.sock'
        self.ident = ident or os.path.basename(sys.executable)
        self.client = Client()
        self.client.connect(self.address)

    def emit(self, record):
        try:
            if not self.client.connected:
                self.client.connect(self.address)

            item = {
                'timestamp': datetime.utcfromtimestamp(record.created),
                'priority': PRIORITY_MAP.get(record.levelno, 'INFO'),
                'message': record.getMessage(),
                'identifier': self.ident,
                'thread': record.threadName,
                'tid': record.thread,
                'module_name': record.name,
                'source_language': 'python',
                'source_file': record.pathname,
                'source_line': record.lineno,
            }

            if record.exc_info:
                item['exception'] = ''.join(traceback.format_exception(*record.exc_info))

            self.client.call_async('logd.logging.push', None, item)
        except:
            self.handleError(record)

    def close(self):
        super(LogdLogHandler, self).close()
        self.client.disconnect()
Beispiel #12
0
class Context(object):
    def __init__(self):
        self.server = None
        self.client = None
        self.jobs = {}
        self.provides = set()
        self.lock = RLock()
        self.kq = select.kqueue()
        self.devnull = os.open('/dev/null', os.O_RDWR)
        self.logger = logging.getLogger('Context')
        self.rpc = RpcContext()
        self.rpc.register_service_instance('serviced.management',
                                           ManagementService(self))
        self.rpc.register_service_instance('serviced.job', JobService(self))

    def init_dispatcher(self):
        if self.client and self.client.connected:
            return

        def on_error(reason, **kwargs):
            if reason in (ClientError.CONNECTION_CLOSED, ClientError.LOGOUT):
                self.logger.warning('Connection to dispatcher lost')
                self.connect()

        self.client = Client()
        self.client.on_error(on_error)
        self.connect()

    def init_server(self, address):
        self.server = Server(self)
        self.server.rpc = self.rpc
        self.server.streaming = True
        self.server.start(address, transport_options={'permissions': 0o777})
        thread = Thread(target=self.server.serve_forever)
        thread.name = 'ServerThread'
        thread.daemon = True
        thread.start()

    def provide(self, targets):
        def doit():
            self.logger.debug('Adding dependency targets: {0}'.format(
                ', '.join(targets)))
            with self.lock:
                self.provides |= targets
                for job in list(self.jobs.values()):
                    if job.state == JobState.STOPPED and job.requires <= self.provides:
                        job.start()

        if targets:
            Timer(2, doit).start()

    def job_by_pid(self, pid):
        job = first_or_default(lambda j: j.pid == pid, self.jobs.values())
        return job

    def event_loop(self):
        while True:
            with contextlib.suppress(InterruptedError):
                for ev in self.kq.control(None, MAX_EVENTS):
                    self.logger.log(TRACE, 'New event: {0}'.format(ev))
                    if ev.filter == select.KQ_FILTER_PROC:
                        job = self.job_by_pid(ev.ident)
                        if job:
                            job.pid_event(ev)
                            continue

                        if ev.fflags & select.KQ_NOTE_CHILD:
                            if ev.fflags & select.KQ_NOTE_EXIT:
                                continue

                            pjob = self.job_by_pid(ev.data)
                            if not pjob:
                                self.untrack_pid(ev.ident)
                                continue

                            # Stop tracking at session ID boundary
                            try:
                                if pjob.pgid != os.getpgid(ev.ident):
                                    self.untrack_pid(ev.ident)
                                    continue
                            except ProcessLookupError:
                                continue

                            with self.lock:
                                job = Job(self)
                                job.load_anonymous(pjob, ev.ident)
                                self.jobs[job.id] = job
                                self.logger.info('Added job {0}'.format(
                                    job.label))

    def track_pid(self, pid):
        ev = select.kevent(
            pid, select.KQ_FILTER_PROC, select.KQ_EV_ADD | select.KQ_EV_ENABLE,
            select.KQ_NOTE_EXIT | select.KQ_NOTE_EXEC | select.KQ_NOTE_FORK
            | select.KQ_NOTE_TRACK, 0, 0)

        self.kq.control([ev], 0)

    def untrack_pid(self, pid):
        ev = select.kevent(pid, select.KQ_FILTER_PROC, select.KQ_EV_DELETE, 0,
                           0, 0)

        with contextlib.suppress(FileNotFoundError):
            self.kq.control([ev], 0)

    def emit_event(self, name, args):
        self.server.broadcast_event(name, args)
        if self.client and self.client.connected:
            self.client.emit_event(name, args)

    def connect(self):
        while True:
            try:
                self.client.connect('unix:')
                self.client.login_service('serviced')
                self.client.enable_server(self.rpc)
                self.client.resume_service('serviced.job')
                self.client.resume_service('serviced.management')
                return
            except (OSError, RpcException) as err:
                self.logger.warning(
                    'Cannot connect to dispatcher: {0}, retrying in 1 second'.
                    format(str(err)))
                time.sleep(1)

    def bootstrap(self):
        def doit():
            with self.lock:
                job = Job(self)
                job.load({
                    'Label': 'org.freenas.serviced.bootstrap',
                    'ProgramArguments': BOOTSTRAP_JOB,
                    'OneShot': True,
                    'RunAtLoad': True,
                })

                self.jobs[job.id] = job

        Thread(target=doit).start()

    def shutdown(self):
        self.client.disconnect()
        self.server.close()
        sys.exit(0)

    def main(self):
        parser = argparse.ArgumentParser()
        parser.add_argument('-s',
                            metavar='SOCKET',
                            default=DEFAULT_SOCKET_ADDRESS,
                            help='Socket address to listen on')
        args = parser.parse_args()

        configure_logging('/var/log/serviced.log', 'DEBUG', file=True)
        bsd.setproctitle('serviced')
        self.logger.info('Started')
        self.init_server(args.s)
        self.bootstrap()
        self.event_loop()
Beispiel #13
0
    def run(self, peer):
        if self.datastore.exists('peers', ('address', '=', peer['address']), ('type', '=', 'replication')):
            raise TaskException(errno.EEXIST, 'Replication peer entry for {0} already exists'.format(peer['address']))

        if peer['credentials']['type'] != 'ssh':
            raise TaskException(errno.EINVAL, 'SSH credentials type is needed to perform replication peer pairing')

        remote = peer.get('address')
        credentials = peer['credentials']
        username = credentials.get('username')
        port = credentials.get('port', 22)
        password = credentials.get('password')

        if not username:
            raise TaskException(errno.EINVAL, 'Username has to be specified')

        if not remote:
            raise TaskException(errno.EINVAL, 'Address of remote host has to be specified')

        if not password:
            raise TaskException(errno.EINVAL, 'Password has to be specified')

        remote_client = Client()
        try:
            try:
                remote_client.connect('ws+ssh://{0}@{1}'.format(username, remote), port=port, password=password)
                remote_client.login_service('replicator')
            except (AuthenticationException, OSError, ConnectionRefusedError):
                raise TaskException(errno.ECONNABORTED, 'Cannot connect to {0}:{1}'.format(remote, port))

            local_keys = self.dispatcher.call_sync('peer.get_ssh_keys')
            remote_keys = remote_client.call_sync('peer.get_ssh_keys')
            ip_at_remote_side = remote_client.call_sync('management.get_sender_address').split(',', 1)[0]

            remote_host_key = remote + ' ' + remote_keys[0].rsplit(' ', 1)[0]
            local_host_key = ip_at_remote_side + ' ' + local_keys[0].rsplit(' ', 1)[0]

            local_ssh_config = self.dispatcher.call_sync('service.sshd.get_config')

            if remote_client.call_sync('peer.query', [('name', '=', peer['name'])]):
                raise TaskException(errno.EEXIST, 'Peer entry {0} already exists at {1}'.format(peer['name'], remote))

            peer['credentials'] = {
                'pubkey': remote_keys[1],
                'hostkey': remote_host_key,
                'port': port,
                'type': 'replication'
            }

            self.join_subtasks(self.run_subtask(
                'peer.replication.create_local',
                peer
            ))

            peer['address'] = ip_at_remote_side
            peer['credentials'] = {
                'pubkey': local_keys[1],
                'hostkey': local_host_key,
                'port': local_ssh_config['port'],
                'type': 'replication'
            }

            id = self.datastore.query('peers', ('name', '=', peer['name']), select='id')
            try:
                call_task_and_check_state(
                    remote_client,
                    'peer.replication.create_local',
                    peer
                )
            except TaskException:
                self.datastore.delete('peers', id)
                self.dispatcher.dispatch_event('peer.changed', {
                    'operation': 'delete',
                    'ids': [id]
                })
                raise
        finally:
            remote_client.disconnect()
Beispiel #14
0
class Main(object):
    def __init__(self):
        self.client = None
        self.server = None
        self.datastore = None
        self.hdf = None
        self.hdf_group = None
        self.config = None
        self.logger = logging.getLogger('statd')
        self.data_sources = {}

    def init_datastore(self):
        try:
            self.datastore = get_datastore(self.config)
        except DatastoreException as err:
            self.logger.error('Cannot initialize datastore: %s', str(err))
            sys.exit(1)

    def init_database(self):
        # adding this try/except till system-dataset plugin is added back in in full fidelity
        # just a hack (since that directory's data will not persist)
        # Please remove this when system-dataset plugin is added back in
        try:
            directory = self.client.call_sync(
                'system_dataset.request_directory', 'statd')
        except RpcException:
            directory = '/var/tmp/statd'
            if not os.path.exists(directory):
                os.makedirs(directory)
        self.hdf = tables.open_file(os.path.join(directory, DEFAULT_DBFILE),
                                    mode='a')
        if not hasattr(self.hdf.root, 'stats'):
            self.hdf.create_group('/', 'stats')

        self.hdf_group = self.hdf.root.stats

    def request_table(self, name):
        try:
            if hasattr(self.hdf_group, name):
                return getattr(self.hdf_group, name)

            return self.hdf.create_table(self.hdf_group, name, DataPoint, name)
        except Exception as e:
            self.logger.error(str(e))

    def init_alert_config(self, name):
        config_name = name if self.datastore.exists('statd.alerts',
                                                    ('id', '=',
                                                     name)) else 'default'
        alert_config = self.datastore.get_by_id('statd.alerts', config_name)
        return alert_config

    def get_data_source(self, name):
        if name not in list(self.data_sources.keys()):
            config = DataSourceConfig(self.datastore, name)
            alert_config = self.init_alert_config(name)
            ds = DataSource(self, name, config, alert_config)
            self.data_sources[name] = ds
            self.client.call_sync('plugin.register_event_type', 'statd.output',
                                  'statd.{0}.pulse'.format(name))

        return self.data_sources[name]

    def register_schemas(self):
        self.client.register_schema(
            'GetStatsParams', {
                'type': 'object',
                'additionalProperties': False,
                'properties': {
                    'start': {
                        'type': 'datetime'
                    },
                    'end': {
                        'type': 'datetime'
                    },
                    'timespan': {
                        'type': 'integer'
                    },
                    'frequency': {
                        'type': 'string'
                    }
                }
            })

        self.client.register_schema(
            'GetStatsResult', {
                'type': 'object',
                'additionalProperties': False,
                'properties': {
                    'data': {
                        'type': 'array',
                    }
                }
            })

    def connect(self):
        while True:
            try:
                self.client.connect('unix:')
                self.client.login_service('statd')
                self.client.enable_server()
                self.register_schemas()
                self.client.register_service('statd.output',
                                             OutputService(self))
                self.client.register_service('statd.alert', AlertService(self))
                self.client.register_service('statd.debug',
                                             DebugService(gevent=True))
                self.client.resume_service('statd.output')
                self.client.resume_service('statd.alert')
                self.client.resume_service('statd.debug')
                for i in list(self.data_sources.keys()):
                    self.client.call_sync('plugin.register_event_type',
                                          'statd.output',
                                          'statd.{0}.pulse'.format(i))

                return
            except (OSError, RpcException) as err:
                self.logger.warning(
                    'Cannot connect to dispatcher: {0}, retrying in 1 second'.
                    format(str(err)))
                time.sleep(1)

    def init_dispatcher(self):
        def on_error(reason, **kwargs):
            if reason in (ClientError.CONNECTION_CLOSED, ClientError.LOGOUT):
                self.logger.warning('Connection to dispatcher lost')
                self.connect()

        self.client = Client()
        self.client.on_error(on_error)
        self.connect()

    def die(self):
        self.logger.warning('Exiting')
        self.server.stop()
        self.client.disconnect()
        sys.exit(0)

    def dispatcher_error(self, error):
        self.die()

    def checkin(self):
        checkin()

    def main(self):
        parser = argparse.ArgumentParser()
        parser.add_argument('-c',
                            metavar='CONFIG',
                            default=DEFAULT_CONFIGFILE,
                            help='Middleware config file')
        args = parser.parse_args()
        configure_logging('/var/log/fnstatd.log', 'DEBUG')
        setproctitle('fnstatd')

        # Signal handlers
        gevent.signal(signal.SIGQUIT, self.die)
        gevent.signal(signal.SIGTERM, self.die)
        gevent.signal(signal.SIGINT, self.die)

        self.server = InputServer(self)
        self.config = args.c
        self.init_datastore()
        self.init_dispatcher()
        self.init_database()
        self.server.start()
        self.logger.info('Started')
        self.checkin()
        self.client.wait_forever()
Beispiel #15
0
class BaseTestCase(unittest.TestCase):
    class TaskState(object):
        def __init__(self):
            self.tid = None
            self.state = None
            self.message = None
            self.result = None
            self.name = None
            self.ended = Event()
            

    def __init__(self, methodName):
        super(BaseTestCase, self).__init__(methodName)
        self.tasks = {}
        self.tasks_lock = Lock()
        self.conn = None
        self.task_timeout = 30

    def setUp(self):
        try:
            self.conn = Client()
            self.conn.event_callback = self.on_event
            self.conn.connect(os.getenv('TESTHOST', '127.0.0.1'))
            self.conn.login_user(os.getenv('TESTUSER', 'root'), os.getenv('TESTPWD', ''), timeout = self.task_timeout)
            self.conn.subscribe_events('*')
        except:
            raise

    def tearDown(self):
        self.conn.disconnect()

    def submitTask(self, name, *args):
        with self.tasks_lock:
            try:
                tid = self.conn.call_sync('task.submit', name, args)
            except RpcException:
                raise
            except Exception:
                raise    

            self.tasks[tid] = self.TaskState()
            self.tasks[tid].tid = tid
            self.tasks[tid].name = name
        return tid

    def assertTaskCompletion(self, tid):
        t = self.tasks[tid]
        if not t.ended.wait(self.task_timeout):
            self.fail('Task {0} timed out'.format(tid))
        #print dir(t)    
        #print 'Message is ' + str(t.message)  
        #print 'State is ' + str(t.state)
        #print 'Result is ' + str(t.result)

        if t.state.count('Executing...'):
            message = t.error
        elif t.__getattribute__('message') and t.message.count('Executing...'):
            message = t.state    
        else:
            message = t.message
        if not message:
            self.query_task(tid)
 
        self.assertEqual(t.state, 'FINISHED', msg=message)

    def assertTaskFailure(self, tid):
        t = self.tasks[tid]
        if not t.ended.wait(self.task_timeout):
            self.fail('Task {0} timed out'.format(tid))

        self.assertNotEqual(t.state, 'FINISHED', msg=t.message)

    def assertSeenEvent(self, name, func=None):
        pass

    def skip(self, reason):
        raise unittest.SkipTest(str(reason))      

    def getTaskResult(self, tid):
        t = self.tasks[tid]
        return t.result

    def on_event(self, name, args):

        with self.tasks_lock:
            if name == 'task.updated':
                #DEBUG
                #print 'ARGS IS ' + str(args)
                #print 'TASK LIST IS ' + str(self.tasks)
                #for pc in self.conn.pending_calls.keys():
                #    print 'PENDING CALL METHOD ' + str(self.conn.pending_calls[pc].method) + \
                #    ' and ID ' + str(self.conn.pending_calls[pc].id)

                if args['id'] not in self.tasks.keys():
                    if args['state'] == 'EXECUTING':
                        return
                else:           
                    t = self.tasks[args['id']]
                    t.state = args['state']
                    if t.state in ('FINISHED', 'FAILED'):
                        t.result = args['result'] if 'result' in args else None
                        t.ended.set()

            elif name == 'task.progress':
                if args['id'] not in self.tasks.keys():
                    if args['state'] == 'EXECUTING':
                        return
                else:
                    t = self.tasks[args['id']]
                    t.message = args['message']


    def on_eventOrig(self, name, args):

        self.tasks_lock.acquire()
        if name == 'task.updated':
            #DEBUG
            #print 'ARGS IS ' + str(args)
            #print 'TASK LIST IS ' + str(self.tasks)
            #for pc in self.conn.pending_calls.keys():
            #    print 'PENDING CALL METHOD ' + str(self.conn.pending_calls[pc].method) + \
            #    ' and ID ' + str(self.conn.pending_calls[pc].id)

            if args['id'] not in self.tasks.keys():
                if args['state'] == 'EXECUTING':
                    self.tasks_lock.release()
                    return
            else:           
                t = self.tasks[args['id']]
                t.state = args['state']
                if t.state in ('FINISHED', 'FAILED'):
                    t.result = args['result'] if 'result' in args else None
                    t.ended.set()

        elif name == 'task.progress':
            if args['id'] not in self.tasks.keys():
                if args['state'] == 'EXECUTING':
                    self.tasks_lock.release()
                    return
            else:
                t = self.tasks[args['id']]
                t.message = args['message']
        
        self.tasks_lock.release()    

    def pretty_print(self, res):
        if '-v' in sys.argv:
            print json.dumps(res, indent=4, sort_keys=True)

    def query_task(self, tid):
        # Makes tests very slow, keep as debug
        query =  self.conn.call_sync('task.query', [('id','=',tid)])    
        message = query[0]['error']
        self.pretty_print(message)
class Main(object):
    def __init__(self):
        self.client = None
        self.datastore = None
        self.configstore = None
        self.config = None
        self.mgmt = None
        self.vm_started = Event()
        self.containers = {}
        self.tokens = {}
        self.logger = logging.getLogger('containerd')
        self.bridge_interface = None
        self.used_nmdms = []

    def init_datastore(self):
        try:
            self.datastore = get_datastore(self.config)
        except DatastoreException as err:
            self.logger.error('Cannot initialize datastore: %s', str(err))
            sys.exit(1)

        self.configstore = ConfigStore(self.datastore)

    def allocate_nmdm(self):
        for i in range(0, 255):
            if i not in self.used_nmdms:
                self.used_nmdms.append(i)
                return i

    def release_nmdm(self, index):
        self.used_nmdms.remove(index)

    def connect(self):
        while True:
            try:
                self.client.connect('unix:')
                self.client.login_service('containerd')
                self.client.enable_server()
                self.client.register_service('containerd.management', ManagementService(self))
                self.client.register_service('containerd.debug', DebugService(gevent=True, builtins={"context": self}))
                self.client.resume_service('containerd.management')
                self.client.resume_service('containerd.debug')

                return
            except (OSError, RpcException) as err:
                self.logger.warning('Cannot connect to dispatcher: {0}, retrying in 1 second'.format(str(err)))
                time.sleep(1)

    def init_dispatcher(self):
        def on_error(reason, **kwargs):
            if reason in (ClientError.CONNECTION_CLOSED, ClientError.LOGOUT):
                self.logger.warning('Connection to dispatcher lost')
                self.connect()

        self.client = Client()
        self.client.use_bursts = True
        self.client.on_error(on_error)
        self.connect()

    def init_mgmt(self):
        self.mgmt = ManagementNetwork(self, MGMT_INTERFACE, MGMT_ADDR)
        self.mgmt.up()
        self.mgmt.bridge_if.add_address(netif.InterfaceAddress(
            netif.AddressFamily.INET,
            ipaddress.ip_interface('169.254.169.254/32')
        ))

    def init_nat(self):
        default_if = self.client.call_sync('networkd.configuration.get_default_interface')
        if not default_if:
            self.logger.warning('No default route interface; not configuring NAT')
            return

        p = pf.PF()

        # Try to find and remove existing NAT rules for the same subnet
        oldrule = first_or_default(
            lambda r: r.src.address.address == MGMT_ADDR.network.network_address,
            p.get_rules('nat')
        )

        if oldrule:
            p.delete_rule('nat', oldrule.index)

        rule = pf.Rule()
        rule.src.address.address = MGMT_ADDR.network.network_address
        rule.src.address.netmask = MGMT_ADDR.netmask
        rule.action = pf.RuleAction.NAT
        rule.af = socket.AF_INET
        rule.ifname = default_if
        rule.redirect_pool.append(pf.Address(ifname=default_if))
        rule.proxy_ports = [50001, 65535]
        p.append_rule('nat', rule)

        try:
            p.enable()
        except OSError as err:
            if err.errno != errno.EEXIST:
                raise err

    def init_ec2(self):
        self.ec2 = EC2MetadataServer(self)
        self.ec2.start()

    def vm_by_mgmt_mac(self, mac):
        for i in self.containers.values():
            for tapmac in i.tap_interfaces.values():
                if tapmac == mac:
                    return i

        return None

    def vm_by_mgmt_ip(self, ip):
        for i in self.mgmt.allocations.values():
            if i.lease.client_ip == ip:
                return i.vm()

    def die(self):
        self.logger.warning('Exiting')
        for i in self.containers.values():
            i.stop(True)

        self.client.disconnect()
        sys.exit(0)

    def generate_id(self):
        return ''.join([random.choice(string.ascii_letters + string.digits) for n in range(32)])

    def dispatcher_error(self, error):
        self.die()

    def main(self):
        parser = argparse.ArgumentParser()
        parser.add_argument('-c', metavar='CONFIG', default=DEFAULT_CONFIGFILE, help='Middleware config file')
        parser.add_argument('-p', type=int, metavar='PORT', default=5500, help="WebSockets server port")
        args = parser.parse_args()
        configure_logging('/var/log/containerd.log', 'DEBUG')
        setproctitle.setproctitle('containerd')

        gevent.signal(signal.SIGTERM, self.die)
        gevent.signal(signal.SIGQUIT, self.die)

        self.config = args.c
        self.init_datastore()
        self.init_dispatcher()
        self.init_mgmt()
        self.init_nat()
        self.init_ec2()
        self.logger.info('Started')

        # WebSockets server
        kwargs = {}
        s4 = WebSocketServer(('', args.p), ServerResource({
            '/console': ConsoleConnection,
        }, context=self), **kwargs)

        s6 = WebSocketServer(('::', args.p), ServerResource({
            '/console': ConsoleConnection,
        }, context=self), **kwargs)

        serv_threads = [gevent.spawn(s4.serve_forever), gevent.spawn(s6.serve_forever)]
        gevent.joinall(serv_threads)
Beispiel #17
0
class Context(object):
    def __init__(self):
        self.server = None
        self.client = None
        self.jobs = {}
        self.provides = set()
        self.lock = RLock()
        self.kq = select.kqueue()
        self.devnull = os.open('/dev/null', os.O_RDWR)
        self.logger = logging.getLogger('Context')
        self.rpc = RpcContext()
        self.rpc.register_service_instance('serviced.management', ManagementService(self))
        self.rpc.register_service_instance('serviced.job', JobService(self))

    def init_dispatcher(self):
        if self.client and self.client.connected:
            return

        def on_error(reason, **kwargs):
            if reason in (ClientError.CONNECTION_CLOSED, ClientError.LOGOUT):
                self.logger.warning('Connection to dispatcher lost')
                self.connect()

        self.client = Client()
        self.client.on_error(on_error)
        self.connect()

    def init_server(self, address):
        self.server = Server(self)
        self.server.rpc = self.rpc
        self.server.streaming = True
        self.server.start(address, transport_options={'permissions': 0o777})
        thread = Thread(target=self.server.serve_forever)
        thread.name = 'ServerThread'
        thread.daemon = True
        thread.start()

    def provide(self, targets):
        def doit():
            self.logger.debug('Adding dependency targets: {0}'.format(', '.join(targets)))
            with self.lock:
                self.provides |= targets
                for job in list(self.jobs.values()):
                    if job.state == JobState.STOPPED and job.requires <= self.provides:
                        job.start()

        if targets:
            Timer(2, doit).start()

    def job_by_pid(self, pid):
        job = first_or_default(lambda j: j.pid == pid, self.jobs.values())
        return job

    def event_loop(self):
        while True:
            with contextlib.suppress(InterruptedError):
                for ev in self.kq.control(None, MAX_EVENTS):
                    self.logger.log(TRACE, 'New event: {0}'.format(ev))
                    if ev.filter == select.KQ_FILTER_PROC:
                        job = self.job_by_pid(ev.ident)
                        if job:
                            job.pid_event(ev)
                            continue

                        if ev.fflags & select.KQ_NOTE_CHILD:
                            if ev.fflags & select.KQ_NOTE_EXIT:
                                continue

                            pjob = self.job_by_pid(ev.data)
                            if not pjob:
                                self.untrack_pid(ev.ident)
                                continue

                            # Stop tracking at session ID boundary
                            try:
                                if pjob.pgid != os.getpgid(ev.ident):
                                    self.untrack_pid(ev.ident)
                                    continue
                            except ProcessLookupError:
                                continue

                            with self.lock:
                                job = Job(self)
                                job.load_anonymous(pjob, ev.ident)
                                self.jobs[job.id] = job
                                self.logger.info('Added job {0}'.format(job.label))

    def track_pid(self, pid):
        ev = select.kevent(
            pid,
            select.KQ_FILTER_PROC,
            select.KQ_EV_ADD | select.KQ_EV_ENABLE,
            select.KQ_NOTE_EXIT | select.KQ_NOTE_EXEC | select.KQ_NOTE_FORK | select.KQ_NOTE_TRACK,
            0, 0
        )

        self.kq.control([ev], 0)

    def untrack_pid(self, pid):
        ev = select.kevent(
            pid,
            select.KQ_FILTER_PROC,
            select.KQ_EV_DELETE,
            0, 0, 0
        )

        with contextlib.suppress(FileNotFoundError):
            self.kq.control([ev], 0)

    def emit_event(self, name, args):
        self.server.broadcast_event(name, args)
        if self.client and self.client.connected:
            self.client.emit_event(name, args)

    def connect(self):
        while True:
            try:
                self.client.connect('unix:')
                self.client.login_service('serviced')
                self.client.enable_server(self.rpc)
                self.client.resume_service('serviced.job')
                self.client.resume_service('serviced.management')
                return
            except (OSError, RpcException) as err:
                self.logger.warning('Cannot connect to dispatcher: {0}, retrying in 1 second'.format(str(err)))
                time.sleep(1)

    def bootstrap(self):
        def doit():
            with self.lock:
                job = Job(self)
                job.load({
                    'Label': 'org.freenas.serviced.bootstrap',
                    'ProgramArguments': BOOTSTRAP_JOB,
                    'OneShot': True,
                    'RunAtLoad': True,
                })

                self.jobs[job.id] = job

        Thread(target=doit).start()

    def shutdown(self):
        self.client.disconnect()
        self.server.close()
        sys.exit(0)

    def main(self):
        parser = argparse.ArgumentParser()
        parser.add_argument('-s', metavar='SOCKET', default=DEFAULT_SOCKET_ADDRESS, help='Socket address to listen on')
        args = parser.parse_args()

        configure_logging('/var/log/serviced.log', 'DEBUG', file=True)
        bsd.setproctitle('serviced')
        self.logger.info('Started')
        self.init_server(args.s)
        self.bootstrap()
        self.event_loop()
Beispiel #18
0
class Context(object):
    def __init__(self):
        self.logger = logging.getLogger(self.__class__.__name__)
        self.msock = msock.client.Client()
        self.msock.on_closed = self.on_msock_close
        self.rpc_fd = -1
        self.connection_id = None
        self.jobs = []
        self.state = ConnectionState.OFFLINE
        self.config = None
        self.keepalive = None
        self.connected_at = None
        self.cv = Condition()
        self.rpc = RpcContext()
        self.client = Client()
        self.server = Server()
        self.middleware_endpoint = None

    def start(self, configpath, sockpath):
        signal.signal(signal.SIGUSR2, lambda signo, frame: self.connect())
        self.read_config(configpath)
        self.server.rpc = RpcContext()
        self.server.rpc.register_service_instance("control", ControlService(self))
        self.server.start(sockpath)
        threading.Thread(target=self.server.serve_forever, name="server thread", daemon=True).start()

    def init_dispatcher(self):
        def on_error(reason, **kwargs):
            if reason in (ClientError.CONNECTION_CLOSED, ClientError.LOGOUT):
                self.logger.warning("Connection to dispatcher lost")
                self.connect_dispatcher()

        self.middleware_endpoint = Client()
        self.middleware_endpoint.on_error(on_error)
        self.connect_dispatcher()

    def connect_dispatcher(self):
        while True:
            try:
                self.middleware_endpoint.connect("unix:")
                self.middleware_endpoint.login_service("debugd")
                self.middleware_endpoint.enable_server()
                self.middleware_endpoint.register_service("debugd.management", ControlService(self))
                self.middleware_endpoint.resume_service("debugd.management")
                return
            except (OSError, RpcException) as err:
                self.logger.warning("Cannot connect to dispatcher: {0}, retrying in 1 second".format(str(err)))
                time.sleep(1)

    def read_config(self, path):
        try:
            with open(path) as f:
                self.config = json.load(f)
        except (IOError, OSError, ValueError) as err:
            self.logger.fatal("Cannot open config file: {0}".format(str(err)))
            self.logger.fatal("Exiting.")
            sys.exit(1)

    def connect(self, discard=False):
        if discard:
            self.connection_id = None

        self.keepalive = threading.Thread(target=self.connect_keepalive, daemon=True)
        self.keepalive.start()

    def connect_keepalive(self):
        while True:
            try:
                if not self.connection_id:
                    self.connection_id = uuid.uuid4()

                self.msock.connect(SUPPORT_PROXY_ADDRESS)
                self.logger.info("Connecting to {0}".format(SUPPORT_PROXY_ADDRESS))
                self.rpc_fd = self.msock.create_channel(0)
                time.sleep(1)  # FIXME
                self.client = Client()
                self.client.connect("fd://", fobj=self.rpc_fd)
                self.client.channel_serializer = MSockChannelSerializer(self.msock)
                self.client.standalone_server = True
                self.client.enable_server()
                self.client.register_service("debug", DebugService(self))
                self.client.call_sync(
                    "server.login", str(self.connection_id), socket.gethostname(), get_version(), "none"
                )
                self.set_state(ConnectionState.CONNECTED)
            except BaseException as err:
                self.logger.warning("Failed to initiate support connection: {0}".format(err), exc_info=True)
                self.msock.disconnect()
            else:
                self.connected_at = datetime.now()
                with self.cv:
                    self.cv.wait_for(lambda: self.state in (ConnectionState.LOST, ConnectionState.OFFLINE))
                    if self.state == ConnectionState.OFFLINE:
                        return

            self.logger.warning("Support connection lost, retrying in 10 seconds")
            time.sleep(10)

    def disconnect(self):
        self.connected_at = None
        self.set_state(ConnectionState.OFFLINE)
        self.client.disconnect()
        self.msock.destroy_channel(0)
        self.msock.disconnect()
        self.jobs.clear()

    def on_msock_close(self):
        self.connected_at = None
        self.set_state(ConnectionState.LOST)

    def run_job(self, job):
        self.jobs.append(job)
        job.context = self
        job.start()

    def set_state(self, state):
        with self.cv:
            self.state = state
            self.cv.notify_all()
Beispiel #19
0
class Main(object):
    def __init__(self):
        self.client = None
        self.datastore = None
        self.config = None
        self.containers = {}
        self.tokens = {}
        self.logger = logging.getLogger('containerd')

    def parse_config(self, filename):
        try:
            f = open(filename, 'r')
            self.config = json.load(f)
            f.close()
        except IOError as err:
            self.logger.error('Cannot read config file: %s', err.message)
            sys.exit(1)
        except ValueError:
            self.logger.error('Config file has unreadable format (not valid JSON)')
            sys.exit(1)

    def init_datastore(self):
        try:
            self.datastore = get_datastore(self.config['datastore']['driver'], self.config['datastore']['dsn'])
        except DatastoreException as err:
            self.logger.error('Cannot initialize datastore: %s', str(err))
            sys.exit(1)

    def connect(self):
        while True:
            try:
                self.client.connect('127.0.0.1')
                self.client.login_service('containerd')
                self.client.enable_server()
                self.client.register_service('containerd.management', ManagementService(self))
                self.client.register_service('containerd.debug', DebugService(gevent=True))
                self.client.resume_service('containerd.management')
                self.client.resume_service('containerd.debug')

                return
            except socket.error as err:
                self.logger.warning('Cannot connect to dispatcher: {0}, retrying in 1 second'.format(str(err)))
                time.sleep(1)

    def init_dispatcher(self):
        def on_error(reason, **kwargs):
            if reason in (ClientError.CONNECTION_CLOSED, ClientError.LOGOUT):
                self.logger.warning('Connection to dispatcher lost')
                self.connect()

        self.client = Client()
        self.client.use_bursts = True
        self.client.on_error(on_error)
        self.connect()

    def die(self):
        self.logger.warning('Exiting')
        self.client.disconnect()
        sys.exit(0)

    def generate_id(self):
        return ''.join([random.choice(string.ascii_letters + string.digits) for n in range(32)])

    def dispatcher_error(self, error):
        self.die()

    def main(self):
        parser = argparse.ArgumentParser()
        parser.add_argument('-c', metavar='CONFIG', default=DEFAULT_CONFIGFILE, help='Middleware config file')
        parser.add_argument('-p', type=int, metavar='PORT', default=5500, help="WebSockets server port")
        args = parser.parse_args()
        configure_logging('/var/log/containerd.log', 'DEBUG')
        setproctitle.setproctitle('containerd')

        self.parse_config(args.c)
        self.init_datastore()
        self.init_dispatcher()
        self.logger.info('Started')

        # WebSockets server
        kwargs = {}
        s4 = WebSocketServer(('', args.p), ServerResource({
            '/console': ConsoleConnection,
        }, context=self), **kwargs)

        s6 = WebSocketServer(('::', args.p), ServerResource({
            '/console': ConsoleConnection,
        }, context=self), **kwargs)

        serv_threads = [gevent.spawn(s4.serve_forever), gevent.spawn(s6.serve_forever)]
        gevent.joinall(serv_threads)
Beispiel #20
0
class BaseTestCase(unittest.TestCase):
    class TaskState(object):
        def __init__(self):
            self.tid = None
            self.state = None
            self.message = None
            self.result = None
            self.name = None
            self.ended = Event()

    def __init__(self, methodName):
        super(BaseTestCase, self).__init__(methodName)
        self.tasks = {}
        self.tasks_lock = Lock()
        self.conn = None
        self.task_timeout = 30

    def setUp(self):
        try:
            self.conn = Client()
            self.conn.event_callback = self.on_event
            self.conn.connect(os.getenv('TESTHOST', '127.0.0.1'))
            self.conn.login_user(os.getenv('TESTUSER', 'root'),
                                 os.getenv('TESTPWD', ''),
                                 timeout=self.task_timeout)
            self.conn.subscribe_events('*')
        except:
            raise

    def tearDown(self):
        self.conn.disconnect()

    def submitTask(self, name, *args):
        with self.tasks_lock:
            try:
                tid = self.conn.call_sync('task.submit', name, args)
            except RpcException:
                raise
            except Exception:
                raise

            self.tasks[tid] = self.TaskState()
            self.tasks[tid].tid = tid
            self.tasks[tid].name = name
        return tid

    def assertTaskCompletion(self, tid):
        t = self.tasks[tid]
        if not t.ended.wait(self.task_timeout):
            self.fail('Task {0} timed out'.format(tid))
        #print dir(t)
        #print 'Message is ' + str(t.message)
        #print 'State is ' + str(t.state)
        #print 'Result is ' + str(t.result)

        if t.state.count('Executing...'):
            message = t.error
        elif t.__getattribute__('message') and t.message.count('Executing...'):
            message = t.state
        else:
            message = t.message
        if not message:
            self.query_task(tid)

        self.assertEqual(t.state, 'FINISHED', msg=message)

    def assertTaskFailure(self, tid):
        t = self.tasks[tid]
        if not t.ended.wait(self.task_timeout):
            self.fail('Task {0} timed out'.format(tid))

        self.assertNotEqual(t.state, 'FINISHED', msg=t.message)

    def assertSeenEvent(self, name, func=None):
        pass

    def skip(self, reason):
        raise unittest.SkipTest(str(reason))

    def getTaskResult(self, tid):
        t = self.tasks[tid]
        return t.result

    def on_event(self, name, args):

        with self.tasks_lock:
            if name == 'task.updated':
                #DEBUG
                #print 'ARGS IS ' + str(args)
                #print 'TASK LIST IS ' + str(self.tasks)
                #for pc in self.conn.pending_calls.keys():
                #    print 'PENDING CALL METHOD ' + str(self.conn.pending_calls[pc].method) + \
                #    ' and ID ' + str(self.conn.pending_calls[pc].id)

                if args['id'] not in self.tasks.keys():
                    if args['state'] == 'EXECUTING':
                        return
                else:
                    t = self.tasks[args['id']]
                    t.state = args['state']
                    if t.state in ('FINISHED', 'FAILED'):
                        t.result = args['result'] if 'result' in args else None
                        t.ended.set()

            elif name == 'task.progress':
                if args['id'] not in self.tasks.keys():
                    if args['state'] == 'EXECUTING':
                        return
                else:
                    t = self.tasks[args['id']]
                    t.message = args['message']

    def on_eventOrig(self, name, args):

        self.tasks_lock.acquire()
        if name == 'task.updated':
            #DEBUG
            #print 'ARGS IS ' + str(args)
            #print 'TASK LIST IS ' + str(self.tasks)
            #for pc in self.conn.pending_calls.keys():
            #    print 'PENDING CALL METHOD ' + str(self.conn.pending_calls[pc].method) + \
            #    ' and ID ' + str(self.conn.pending_calls[pc].id)

            if args['id'] not in self.tasks.keys():
                if args['state'] == 'EXECUTING':
                    self.tasks_lock.release()
                    return
            else:
                t = self.tasks[args['id']]
                t.state = args['state']
                if t.state in ('FINISHED', 'FAILED'):
                    t.result = args['result'] if 'result' in args else None
                    t.ended.set()

        elif name == 'task.progress':
            if args['id'] not in self.tasks.keys():
                if args['state'] == 'EXECUTING':
                    self.tasks_lock.release()
                    return
            else:
                t = self.tasks[args['id']]
                t.message = args['message']

        self.tasks_lock.release()

    def pretty_print(self, res):
        if '-v' in sys.argv:
            print json.dumps(res, indent=4, sort_keys=True)

    def query_task(self, tid):
        # Makes tests very slow, keep as debug
        query = self.conn.call_sync('task.query', [('id', '=', tid)])
        message = query[0]['error']
        self.pretty_print(message)
Beispiel #21
0
class Context(object):
    def __init__(self):
        self.hostname = None
        self.connection = Client()
        self.ml = None
        self.logger = logging.getLogger('cli')
        self.plugin_dirs = []
        self.task_callbacks = {}
        self.plugins = {}
        self.variables = VariableStore()
        self.root_ns = RootNamespace('')
        self.event_masks = ['*']
        self.event_divert = False
        self.event_queue = six.moves.queue.Queue()
        self.keepalive_timer = None
        self.argparse_parser = None
        config.instance = self

    @property
    def is_interactive(self):
        return os.isatty(sys.stdout.fileno())

    def start(self):
        self.discover_plugins()
        self.connect()

    def connect(self):
        try:
            self.connection.connect(self.hostname)
        except socket_error as err:
            output_msg(_(
                "Could not connect to host: {0} due to error: {1}".format(self.hostname, err)
            ))
            self.argparse_parser.print_help()
            sys.exit(1)

    def login(self, user, password):
        try:
            self.connection.login_user(user, password)
            self.connection.subscribe_events(*EVENT_MASKS)
            self.connection.on_event(self.handle_event)
            self.connection.on_error(self.connection_error)

        except RpcException as e:
            if e.code == errno.EACCES:
                self.connection.disconnect()
                output_msg(_("Wrong username or password"))
                sys.exit(1)

        self.login_plugins()

    def keepalive(self):
        if self.connection.opened:
            self.connection.call_sync('management.ping')

    def read_middleware_config_file(self, file):
        """
        If there is a cli['plugin-dirs'] in middleware.conf use that,
        otherwise use the default plugins dir within cli namespace
        """
        plug_dirs = None
        if file:
            with open(file, 'r') as f:
                data = json.load(f)

            if 'cli' in data and 'plugin-dirs' in data['cli']:

                if type(data['cli']['plugin-dirs']) != list:
                    return

                self.plugin_dirs += data['cli']['plugin-dirs']

        if plug_dirs is None:
            plug_dirs = os.path.dirname(os.path.realpath(__file__))
            plug_dirs = os.path.join(plug_dirs, 'plugins')
            self.plugin_dirs += [plug_dirs]


    def discover_plugins(self):
        for dir in self.plugin_dirs:
            self.logger.debug(_("Searching for plugins in %s"), dir)
            self.__discover_plugin_dir(dir)

    def login_plugins(self):
        for i in list(self.plugins.values()):
            if hasattr(i, '_login'):
                i._login(self)

    def __discover_plugin_dir(self, dir):
        for i in glob.glob1(dir, "*.py"):
            self.__try_load_plugin(os.path.join(dir, i))

    def __try_load_plugin(self, path):
        if path in self.plugins:
            return

        self.logger.debug(_("Loading plugin from %s"), path)
        name, ext = os.path.splitext(os.path.basename(path))
        plugin = imp.load_source(name, path)

        if hasattr(plugin, '_init'):
            plugin._init(self)
            self.plugins[path] = plugin

    def __try_reconnect(self):
        output_lock.acquire()
        self.ml.blank_readline()

        output_msg(_('Connection lost! Trying to reconnect...'))
        retries = 0
        while True:
            retries += 1
            try:
                time.sleep(2)
                self.connect()
                try:
                    if self.hostname == '127.0.0.1':
                        self.connection.login_user(getpass.getuser(), '')
                    else:
                        self.connection.login_token(self.connection.token)

                    self.connection.subscribe_events(*EVENT_MASKS)
                except RpcException:
                    output_msg(_("Reauthentication failed (most likely token expired or server was restarted)"))
                    sys.exit(1)
                break
            except Exception as e:
                output_msg(_('Cannot reconnect: {0}'.format(str(e))))

        self.ml.restore_readline()
        output_lock.release()

    def attach_namespace(self, path, ns):
        splitpath = path.split('/')
        ptr = self.root_ns
        ptr_namespaces = ptr.namespaces()

        for n in splitpath[1:-1]:

            if n not in list(ptr_namespaces().keys()):
                self.logger.warn(_("Cannot attach to namespace %s"), path)
                return

            ptr = ptr_namespaces()[n]

        ptr.register_namespace(ns)

    def connection_error(self, event, **kwargs):
        if event == ClientError.LOGOUT:
            output_msg('Logged out from server.')
            self.connection.disconnect()
            sys.exit(0)

        if event == ClientError.CONNECTION_CLOSED:
            time.sleep(1)
            self.__try_reconnect()
            return

    def handle_event(self, event, data):
        if event == 'task.updated':
            if data['id'] in self.task_callbacks:
                self.handle_task_callback(data)

        self.print_event(event, data)

    def handle_task_callback(self, data):
        if data['state'] in ('FINISHED', 'CANCELLED', 'ABORTED', 'FAILED'):
            self.task_callbacks[data['id']](data['state'])

    def print_event(self, event, data):
        if self.event_divert:
            self.event_queue.put((event, data))
            return

        if event == 'task.progress':
            return

        output_lock.acquire()
        self.ml.blank_readline()

        translation = events.translate(self, event, data)
        if translation:
            output_msg(translation)
            if 'state' in data:
                if data['state'] == 'FAILED':
                    status = self.connection.call_sync('task.status', data['id'])
                    output_msg(_(
                        "Task #{0} error: {1}".format(
                            data['id'],
                            status['error'].get('message', '') if status.get('error') else ''
                        )
                    ))

        sys.stdout.flush()
        self.ml.restore_readline()
        output_lock.release()

    def call_sync(self, name, *args, **kwargs):
        return wrap(self.connection.call_sync(name, *args, **kwargs))

    def call_task_sync(self, name, *args, **kwargs):
        self.ml.skip_prompt_print = True
        wrapped_result = wrap(self.connection.call_task_sync(name, *args))
        self.ml.skip_prompt_print = False
        return wrapped_result

    def submit_task(self, name, *args, **kwargs):
        callback = kwargs.pop('callback', None)
        message_formatter = kwargs.pop('message_formatter', None)

        if not self.variables.get('tasks_blocking'):
            tid = self.connection.call_sync('task.submit', name, args)
            if callback:
                self.task_callbacks[tid] = callback

            return tid
        else:
            output_msg(_("Hit Ctrl+C to terminate task if needed"))
            self.event_divert = True
            tid = self.connection.call_sync('task.submit', name, args)
            progress = ProgressBar()
            try:
                while True:
                    event, data = self.event_queue.get()

                    if event == 'task.progress' and data['id'] == tid:
                        message = data['message']
                        if isinstance(message_formatter, collections.Callable):
                            message = message_formatter(message)
                        progress.update(percentage=data['percentage'], message=message)

                    if event == 'task.updated' and data['id'] == tid:
                        progress.update(message=data['state'])
                        if data['state'] == 'FINISHED':
                            progress.finish()
                            break

                        if data['state'] == 'FAILED':
                            print()
                            break
            except KeyboardInterrupt:
                print()
                output_msg(_("User requested task termination. Task abort signal sent"))
                self.call_sync('task.abort', tid)

        self.event_divert = False
        return tid
Beispiel #22
0
    def run(self, peer, initial_credentials):
        hostid = self.dispatcher.call_sync('system.info.host_uuid')
        hostname = self.dispatcher.call_sync('system.general.get_config')['hostname']
        remote_peer_name = hostname
        credentials = peer['credentials']
        remote = credentials.get('address')
        port = credentials.get('port', 22)
        username = initial_credentials.get('username')
        password = initial_credentials.get('password')
        auth_code = initial_credentials.get('auth_code')
        key_auth = initial_credentials.get('key_auth')

        local_ssh_config = self.dispatcher.call_sync('service.sshd.get_config')

        if self.datastore.exists('peers', ('credentials.address', '=', remote), ('type', '=', 'freenas')):
            raise TaskException(
                errno.EEXIST,
                'FreeNAS peer entry for {0} already exists'.format(remote)
            )

        remote_client = Client()

        try:
            if auth_code:
                try:
                    remote_client.connect('ws://{0}'.format(wrap_address(remote)))
                except (AuthenticationException, OSError, ConnectionRefusedError):
                    raise TaskException(errno.ECONNABORTED, 'Cannot connect to {0}:{1}'.format(remote, port))

                try:
                    remote_host_uuid, pubkey = remote_client.call_sync(
                        'peer.freenas.auth_with_code',
                        auth_code,
                        hostname,
                        local_ssh_config['port']
                    )
                except RpcException as err:
                    raise TaskException(err.code, err.message)

                try:
                    self.dispatcher.call_sync('peer.freenas.put_temp_pubkey', pubkey)
                    if not self.dispatcher.test_or_wait_for_event(
                        'peer.changed',
                        lambda ar: ar['operation'] == 'create' and remote_host_uuid in ar['ids'],
                        lambda: self.datastore.exists('peers', ('id', '=', remote_host_uuid)),
                        timeout=30
                    ):
                        raise TaskException(
                            errno.EAUTH,
                            'FreeNAS peer creation failed. Check connection to host {0}.'.format(remote)
                        )
                finally:
                    self.dispatcher.call_sync('peer.freenas.remove_temp_pubkey', pubkey)

            else:
                try:
                    if key_auth:
                        with io.StringIO() as f:
                            f.write(self.configstore.get('peer.freenas.key.private'))
                            f.seek(0)
                            pkey = RSAKey.from_private_key(f)

                        max_tries = 50
                        while True:
                            try:
                                remote_client.connect('ws+ssh://freenas@{0}'.format(
                                    wrap_address(remote)), pkey=pkey, port=port
                                )
                                break
                            except AuthenticationException:
                                if max_tries:
                                    max_tries -= 1
                                    time.sleep(1)
                                else:
                                    raise
                    else:
                        remote_client.connect(
                            'ws+ssh://{0}@{1}'.format(username, wrap_address(remote)),
                            port=port,
                            password=password
                        )

                    remote_client.login_service('replicator')
                except (AuthenticationException, OSError, ConnectionRefusedError):
                    raise TaskException(errno.ECONNABORTED, 'Cannot connect to {0}:{1}'.format(remote, port))

                local_host_key, local_pub_key = self.dispatcher.call_sync('peer.freenas.get_ssh_keys')
                remote_host_key, remote_pub_key = remote_client.call_sync('peer.freenas.get_ssh_keys')
                ip_at_remote_side = remote_client.local_address[0]

                remote_hostname = remote_client.call_sync('system.general.get_config')['hostname']

                remote_host_key = remote_host_key.rsplit(' ', 1)[0]
                local_host_key = local_host_key.rsplit(' ', 1)[0]

                if remote_client.call_sync('peer.query', [('id', '=', hostid)]):
                    raise TaskException(errno.EEXIST, 'Peer entry of {0} already exists at {1}'.format(hostname, remote))

                peer['credentials'] = {
                    '%type': 'freenas-credentials',
                    'pubkey': remote_pub_key,
                    'hostkey': remote_host_key,
                    'port': port,
                    'address': remote_hostname
                }

                local_id = remote_client.call_sync('system.info.host_uuid')
                peer['id'] = local_id
                peer['name'] = remote_hostname
                ip = socket.gethostbyname(remote)

                created_id = self.run_subtask_sync(
                    'peer.freenas.create_local',
                    peer,
                    ip,
                    True
                )

                peer['id'] = hostid
                peer['name'] = remote_peer_name
                peer['credentials'] = {
                    '%type': 'freenas-credentials',
                    'pubkey': local_pub_key,
                    'hostkey': local_host_key,
                    'port': local_ssh_config['port'],
                    'address': hostname
                }

                try:
                    call_task_and_check_state(
                        remote_client,
                        'peer.freenas.create_local',
                        peer,
                        ip_at_remote_side
                    )
                except TaskException:
                    self.datastore.delete('peers', local_id)
                    self.dispatcher.dispatch_event('peer.changed', {
                        'operation': 'delete',
                        'ids': [local_id]
                    })
                    raise

                return created_id
        finally:
            remote_client.disconnect()
Beispiel #23
0
class Context(object):
    def __init__(self):
        self.logger = logging.getLogger(self.__class__.__name__)
        self.msock = msock.client.Client()
        self.msock.on_closed = self.on_msock_close
        self.rpc_fd = -1
        self.connection_id = None
        self.jobs = []
        self.state = ConnectionState.OFFLINE
        self.config = None
        self.keepalive = None
        self.connected_at = None
        self.cv = Condition()
        self.rpc = RpcContext()
        self.client = Client()
        self.server = Server()
        self.middleware_endpoint = None

    def start(self, configpath, sockpath):
        signal.signal(signal.SIGUSR2, lambda signo, frame: self.connect())
        self.read_config(configpath)
        self.server.rpc = RpcContext()
        self.server.rpc.register_service_instance('control',
                                                  ControlService(self))
        self.server.start(sockpath)
        threading.Thread(target=self.server.serve_forever,
                         name='server thread',
                         daemon=True).start()

    def init_dispatcher(self):
        def on_error(reason, **kwargs):
            if reason in (ClientError.CONNECTION_CLOSED, ClientError.LOGOUT):
                self.logger.warning('Connection to dispatcher lost')
                self.connect_dispatcher()

        self.middleware_endpoint = Client()
        self.middleware_endpoint.on_error(on_error)
        self.connect_dispatcher()

    def connect_dispatcher(self):
        while True:
            try:
                self.middleware_endpoint.connect('unix:')
                self.middleware_endpoint.login_service('debugd')
                self.middleware_endpoint.enable_server()
                self.middleware_endpoint.register_service(
                    'debugd.management', ControlService(self))
                self.middleware_endpoint.resume_service('debugd.management')
                return
            except (OSError, RpcException) as err:
                self.logger.warning(
                    'Cannot connect to dispatcher: {0}, retrying in 1 second'.
                    format(str(err)))
                time.sleep(1)

    def read_config(self, path):
        try:
            with open(path) as f:
                self.config = json.load(f)
        except (IOError, OSError, ValueError) as err:
            self.logger.fatal('Cannot open config file: {0}'.format(str(err)))
            self.logger.fatal('Exiting.')
            sys.exit(1)

    def connect(self, discard=False):
        if discard:
            self.connection_id = None

        self.keepalive = threading.Thread(target=self.connect_keepalive,
                                          daemon=True)
        self.keepalive.start()

    def connect_keepalive(self):
        while True:
            try:
                if not self.connection_id:
                    self.connection_id = uuid.uuid4()

                self.msock.connect(SUPPORT_PROXY_ADDRESS)
                self.logger.info(
                    'Connecting to {0}'.format(SUPPORT_PROXY_ADDRESS))
                self.rpc_fd = self.msock.create_channel(0)
                time.sleep(1)  # FIXME
                self.client = Client()
                self.client.connect('fd://', fobj=self.rpc_fd)
                self.client.channel_serializer = MSockChannelSerializer(
                    self.msock)
                self.client.standalone_server = True
                self.client.enable_server()
                self.client.register_service('debug', DebugService(self))
                self.client.call_sync('server.login', str(self.connection_id),
                                      socket.gethostname(), get_version(),
                                      'none')
                self.set_state(ConnectionState.CONNECTED)
            except BaseException as err:
                self.logger.warning(
                    'Failed to initiate support connection: {0}'.format(err),
                    exc_info=True)
                self.msock.disconnect()
            else:
                self.connected_at = datetime.now()
                with self.cv:
                    self.cv.wait_for(lambda: self.state in (
                        ConnectionState.LOST, ConnectionState.OFFLINE))
                    if self.state == ConnectionState.OFFLINE:
                        return

            self.logger.warning(
                'Support connection lost, retrying in 10 seconds')
            time.sleep(10)

    def disconnect(self):
        self.connected_at = None
        self.set_state(ConnectionState.OFFLINE)
        self.client.disconnect()
        self.msock.destroy_channel(0)
        self.msock.disconnect()
        self.jobs.clear()

    def on_msock_close(self):
        self.connected_at = None
        self.set_state(ConnectionState.LOST)

    def run_job(self, job):
        self.jobs.append(job)
        job.context = self
        job.start()

    def set_state(self, state):
        with self.cv:
            self.state = state
            self.cv.notify_all()
Beispiel #24
0
class Main(object):
    def __init__(self):
        self.client = None
        self.server = None
        self.datastore = None
        self.hdf = None
        self.hdf_group = None
        self.config = None
        self.logger = logging.getLogger('statd')
        self.data_sources = {}

    def parse_config(self, filename):
        try:
            f = open(filename, 'r')
            self.config = json.load(f)
            f.close()
        except IOError as err:
            self.logger.error('Cannot read config file: %s', err.message)
            sys.exit(1)
        except ValueError:
            self.logger.error('Config file has unreadable format (not valid JSON)')
            sys.exit(1)

    def init_datastore(self):
        try:
            self.datastore = get_datastore(self.config['datastore']['driver'], self.config['datastore']['dsn'])
        except DatastoreException as err:
            self.logger.error('Cannot initialize datastore: %s', str(err))
            sys.exit(1)

    def init_database(self):
        # adding this try/except till system-dataset plugin is added back in in full fidelity
        # just a hack (since that directory's data will not persist)
        # Please remove this when system-dataset plugin is added back in
        try:
            directory = self.client.call_sync('system_dataset.request_directory', 'statd')
        except RpcException:
            directory = '/var/tmp/statd'
            if not os.path.exists(directory):
                os.makedirs(directory)
        self.hdf = tables.open_file(os.path.join(directory, DEFAULT_DBFILE), mode='a')
        if not hasattr(self.hdf.root, 'stats'):
            self.hdf.create_group('/', 'stats')

        self.hdf_group = self.hdf.root.stats

    def request_table(self, name):
        try:
            if hasattr(self.hdf_group, name):
                return getattr(self.hdf_group, name)

            return self.hdf.create_table(self.hdf_group, name, DataPoint, name)
        except Exception as e:
            self.logger.error(str(e))

    def get_data_source(self, name):
        if name not in list(self.data_sources.keys()):
            config = DataSourceConfig(self.datastore, name)
            ds = DataSource(self, name, config)
            self.data_sources[name] = ds
            self.client.call_sync('plugin.register_event_type', 'statd.output', 'statd.{0}.pulse'.format(name))

        return self.data_sources[name]

    def connect(self):
        while True:
            try:
                self.client.connect('127.0.0.1')
                self.client.login_service('statd')
                self.client.enable_server()
                self.client.register_service('statd.output', OutputService(self))
                self.client.register_service('statd.debug', DebugService(gevent=True))
                self.client.resume_service('statd.output')
                self.client.resume_service('statd.debug')
                for i in list(self.data_sources.keys()):
                    self.client.call_sync('plugin.register_event_type', 'statd.output', 'statd.{0}.pulse'.format(i))

                return
            except socket.error as err:
                self.logger.warning('Cannot connect to dispatcher: {0}, retrying in 1 second'.format(str(err)))
                time.sleep(1)

    def init_dispatcher(self):
        def on_error(reason, **kwargs):
            if reason in (ClientError.CONNECTION_CLOSED, ClientError.LOGOUT):
                self.logger.warning('Connection to dispatcher lost')
                self.connect()

        self.client = Client()
        self.client.use_bursts = True
        self.client.on_error(on_error)
        self.connect()

    def die(self):
        self.logger.warning('Exiting')
        self.server.stop()
        self.client.disconnect()
        sys.exit(0)

    def dispatcher_error(self, error):
        self.die()

    def main(self):
        parser = argparse.ArgumentParser()
        parser.add_argument('-c', metavar='CONFIG', default=DEFAULT_CONFIGFILE, help='Middleware config file')
        args = parser.parse_args()
        configure_logging('/var/log/fnstatd.log', 'DEBUG')
        setproctitle.setproctitle('fnstatd')

        # Signal handlers
        gevent.signal(signal.SIGQUIT, self.die)
        gevent.signal(signal.SIGQUIT, self.die)
        gevent.signal(signal.SIGINT, self.die)

        self.server = InputServer(self)
        self.parse_config(args.c)
        self.init_datastore()
        self.init_dispatcher()
        self.init_database()
        self.server.start()
        self.logger.info('Started')
        self.client.wait_forever()
Beispiel #25
0
    def run(self, peer, initial_credentials):
        hostid = self.dispatcher.call_sync('system.info.host_uuid')
        hostname = self.dispatcher.call_sync(
            'system.general.get_config')['hostname']
        remote_peer_name = hostname
        credentials = peer['credentials']
        remote = credentials.get('address')
        port = credentials.get('port', 22)
        username = initial_credentials.get('username')
        password = initial_credentials.get('password')
        auth_code = initial_credentials.get('auth_code')
        key_auth = initial_credentials.get('key_auth')

        local_ssh_config = self.dispatcher.call_sync('service.sshd.get_config')

        if self.datastore.exists('peers', ('credentials.address', '=', remote),
                                 ('type', '=', 'freenas')):
            raise TaskException(
                errno.EEXIST,
                'FreeNAS peer entry for {0} already exists'.format(remote))

        remote_client = Client()

        try:
            if auth_code:
                try:
                    remote_client.connect('ws://{0}'.format(
                        wrap_address(remote)))
                except (AuthenticationException, OSError,
                        ConnectionRefusedError):
                    raise TaskException(
                        errno.ECONNABORTED,
                        'Cannot connect to {0}:{1}'.format(remote, port))

                try:
                    remote_host_uuid, pubkey = remote_client.call_sync(
                        'peer.freenas.auth_with_code', auth_code, hostname,
                        local_ssh_config['port'])
                except RpcException as err:
                    raise TaskException(err.code, err.message)

                try:
                    self.dispatcher.call_sync('peer.freenas.put_temp_pubkey',
                                              pubkey)
                    if not self.dispatcher.test_or_wait_for_event(
                            'peer.changed',
                            lambda ar: ar['operation'] == 'create' and
                            remote_host_uuid in ar['ids'],
                            lambda: self.datastore.exists(
                                'peers', ('id', '=', remote_host_uuid)),
                            timeout=30):
                        raise TaskException(
                            errno.EAUTH,
                            'FreeNAS peer creation failed. Check connection to host {0}.'
                            .format(remote))
                finally:
                    self.dispatcher.call_sync(
                        'peer.freenas.remove_temp_pubkey', pubkey)

            else:
                try:
                    if key_auth:
                        with io.StringIO() as f:
                            f.write(
                                self.configstore.get(
                                    'peer.freenas.key.private'))
                            f.seek(0)
                            pkey = RSAKey.from_private_key(f)

                        max_tries = 50
                        while True:
                            try:
                                remote_client.connect(
                                    'ws+ssh://freenas@{0}'.format(
                                        wrap_address(remote)),
                                    pkey=pkey,
                                    port=port)
                                break
                            except AuthenticationException:
                                if max_tries:
                                    max_tries -= 1
                                    time.sleep(1)
                                else:
                                    raise
                    else:
                        remote_client.connect('ws+ssh://{0}@{1}'.format(
                            username, wrap_address(remote)),
                                              port=port,
                                              password=password)

                    remote_client.login_service('replicator')
                except (AuthenticationException, OSError,
                        ConnectionRefusedError):
                    raise TaskException(
                        errno.ECONNABORTED,
                        'Cannot connect to {0}:{1}'.format(remote, port))

                local_host_key, local_pub_key = self.dispatcher.call_sync(
                    'peer.freenas.get_ssh_keys')
                remote_host_key, remote_pub_key = remote_client.call_sync(
                    'peer.freenas.get_ssh_keys')
                ip_at_remote_side = remote_client.local_address[0]

                remote_hostname = remote_client.call_sync(
                    'system.general.get_config')['hostname']

                remote_host_key = remote_host_key.rsplit(' ', 1)[0]
                local_host_key = local_host_key.rsplit(' ', 1)[0]

                if remote_client.call_sync('peer.query',
                                           [('id', '=', hostid)]):
                    raise TaskException(
                        errno.EEXIST,
                        'Peer entry of {0} already exists at {1}'.format(
                            hostname, remote))

                peer['credentials'] = {
                    '%type': 'freenas-credentials',
                    'pubkey': remote_pub_key,
                    'hostkey': remote_host_key,
                    'port': port,
                    'address': remote_hostname
                }

                local_id = remote_client.call_sync('system.info.host_uuid')
                peer['id'] = local_id
                peer['name'] = remote_hostname
                ip = socket.gethostbyname(remote)

                created_ids = self.join_subtasks(
                    self.run_subtask('peer.freenas.create_local', peer, ip,
                                     True))

                peer['id'] = hostid
                peer['name'] = remote_peer_name
                peer['credentials'] = {
                    '%type': 'freenas-credentials',
                    'pubkey': local_pub_key,
                    'hostkey': local_host_key,
                    'port': local_ssh_config['port'],
                    'address': hostname
                }

                try:
                    call_task_and_check_state(remote_client,
                                              'peer.freenas.create_local',
                                              peer, ip_at_remote_side)
                except TaskException:
                    self.datastore.delete('peers', local_id)
                    self.dispatcher.dispatch_event('peer.changed', {
                        'operation': 'delete',
                        'ids': [local_id]
                    })
                    raise

                return created_ids[0]
        finally:
            remote_client.disconnect()
class Main(object):
    def __init__(self):
        self.client = None
        self.server = None
        self.datastore = None
        self.hdf = None
        self.hdf_group = None
        self.config = None
        self.logger = logging.getLogger('statd')
        self.data_sources = {}

    def init_datastore(self):
        try:
            self.datastore = get_datastore(self.config)
        except DatastoreException as err:
            self.logger.error('Cannot initialize datastore: %s', str(err))
            sys.exit(1)

    def init_database(self):
        # adding this try/except till system-dataset plugin is added back in in full fidelity
        # just a hack (since that directory's data will not persist)
        # Please remove this when system-dataset plugin is added back in
        try:
            directory = self.client.call_sync('system_dataset.request_directory', 'statd')
        except RpcException:
            directory = '/var/tmp/statd'
            if not os.path.exists(directory):
                os.makedirs(directory)
        self.hdf = tables.open_file(os.path.join(directory, DEFAULT_DBFILE), mode='a')
        if not hasattr(self.hdf.root, 'stats'):
            self.hdf.create_group('/', 'stats')

        self.hdf_group = self.hdf.root.stats

    def request_table(self, name):
        try:
            if hasattr(self.hdf_group, name):
                return getattr(self.hdf_group, name)

            return self.hdf.create_table(self.hdf_group, name, DataPoint, name)
        except Exception as e:
            self.logger.error(str(e))

    def init_alert_config(self, name):
        config_name = name if self.datastore.exists('statd.alerts', ('id', '=', name)) else 'default'
        alert_config = self.datastore.get_by_id('statd.alerts', config_name)

        self.client.call_sync(
            'alert.register_alert',
            'stat.{0}.too_high'.format(name),
            '{0} statistic value is too high'.format(name)
        )

        self.client.call_sync(
            'alert.register_alert',
            'stat.{0}.too_low'.format(name),
            '{0} statistic value is too low'.format(name)
        )

        return alert_config

    def get_data_source(self, name):
        if name not in list(self.data_sources.keys()):
            config = DataSourceConfig(self.datastore, name)
            alert_config = self.init_alert_config(name)
            ds = DataSource(self, name, config, alert_config)
            self.data_sources[name] = ds
            self.client.call_sync('plugin.register_event_type', 'statd.output', 'statd.{0}.pulse'.format(name))

        return self.data_sources[name]

    def register_schemas(self):
        self.client.register_schema('stat', {
            'type': 'object',
            'additionalProperties': True,
            'properties': {
                'name': {'type': 'string'},
                'last_value': {'type': ['integer', 'number', 'null']},
                'alerts': {'$ref': 'stat-alert'},
            }
        })
        self.client.register_schema('stat-alert', {
            'type': 'object',
            'additionalProperties': True,
            'properties': {
                'alert_high': {'type': ['integer', 'number', 'null']},
                'alert_high_enabled': {'type': 'boolean'},
                'alert_low': {'type': ['integer', 'number', 'null']},
                'alert_low_enabled': {'type': 'boolean'}
            }
        })

    def connect(self):
        while True:
            try:
                self.client.connect('unix:')
                self.client.login_service('statd')
                self.client.enable_server()
                self.client.register_service('statd.output', OutputService(self))
                self.client.register_service('statd.alert', AlertService(self))
                self.client.register_service('statd.debug', DebugService(gevent=True))
                self.client.resume_service('statd.output')
                self.client.resume_service('statd.alert')
                self.client.resume_service('statd.debug')
                for i in list(self.data_sources.keys()):
                    self.client.call_sync('plugin.register_event_type', 'statd.output', 'statd.{0}.pulse'.format(i))

                return
            except (OSError, RpcException) as err:
                self.logger.warning('Cannot connect to dispatcher: {0}, retrying in 1 second'.format(str(err)))
                time.sleep(1)

    def init_dispatcher(self):
        def on_error(reason, **kwargs):
            if reason in (ClientError.CONNECTION_CLOSED, ClientError.LOGOUT):
                self.logger.warning('Connection to dispatcher lost')
                self.connect()

        self.client = Client()
        self.client.use_bursts = True
        self.client.on_error(on_error)
        self.connect()

    def die(self):
        self.logger.warning('Exiting')
        self.server.stop()
        self.client.disconnect()
        sys.exit(0)

    def dispatcher_error(self, error):
        self.die()

    def main(self):
        parser = argparse.ArgumentParser()
        parser.add_argument('-c', metavar='CONFIG', default=DEFAULT_CONFIGFILE, help='Middleware config file')
        args = parser.parse_args()
        configure_logging('/var/log/fnstatd.log', 'DEBUG')
        setproctitle.setproctitle('fnstatd')

        # Signal handlers
        gevent.signal(signal.SIGQUIT, self.die)
        gevent.signal(signal.SIGTERM, self.die)
        gevent.signal(signal.SIGINT, self.die)

        self.server = InputServer(self)
        self.config = args.c
        self.init_datastore()
        self.init_dispatcher()
        self.init_database()
        self.register_schemas()
        self.server.start()
        self.logger.info('Started')
        self.client.wait_forever()