class Main(object):
def __init__(self):
self.logger = logging.getLogger('dscached')
self.config = None
self.datastore = None
self.configstore = None
self.rpc = RpcContext()
self.rpc.streaming_enabled = True
self.rpc.streaming_burst = 16
self.client = None
self.server = None
self.plugin_dirs = []
self.plugins = {}
self.directories = []
self.users_cache = TTLCacheStore()
self.groups_cache = TTLCacheStore()
self.hosts_cache = TTLCacheStore()
self.cache_ttl = 7200
self.search_order = []
self.cache_enumerations = True
self.cache_lookups = True
self.home_directory_root = None
self.account_service = AccountService(self)
self.group_service = GroupService(self)
self.rpc.register_service_instance('dscached.account',
self.account_service)
self.rpc.register_service_instance('dscached.group',
self.group_service)
self.rpc.register_service_instance('dscached.host', HostService(self))
self.rpc.register_service_instance('dscached.idmap',
IdmapService(self))
self.rpc.register_service_instance('dscached.management',
ManagementService(self))
self.rpc.register_service_instance('dscached.debug', DebugService())
def get_active_directories(self):
return list(
filter(lambda d: d and d.state == DirectoryState.BOUND,
self.directories))
def get_searched_directories(self):
return list(
filter(lambda d: d and d.state == DirectoryState.BOUND,
(self.get_directory_by_name(n)
for n in self.get_search_order())))
def get_search_order(self):
return self.search_order
def get_directory_by_domain(self, domain_name):
return first_or_default(lambda d: d.domain_name == domain_name,
self.directories)
def get_directory_by_name(self, name):
return first_or_default(lambda d: d.name == name, self.directories)
def get_directory_for_id(self, uid=None, gid=None):
if uid is not None:
if uid == 0:
# Special case for root user
return first_or_default(lambda d: d.plugin_type == 'local',
self.directories)
return first_or_default(
lambda d: d.max_uid and d.max_uid >= uid >= d.min_uid,
self.directories)
if gid is not None:
if gid == 0:
# Special case for wheel group
return first_or_default(lambda d: d.plugin_type == 'local',
self.directories)
return first_or_default(
lambda d: d.max_gid and d.max_gid >= gid >= d.min_gid,
self.directories)
def get_home_directory(self, directory, username):
if not self.home_directory_root:
return '/nonexistent'
return os.path.join(self.home_directory_root,
f'{username}@{directory.domain_name}')
def wait_for_etcd(self):
self.client.test_or_wait_for_event(
'plugin.service_resume',
lambda args: args['name'] == 'etcd.generation',
lambda: 'etcd.generation' in self.client.call_sync(
'discovery.get_services'))
def init_datastore(self):
try:
self.datastore = datastore.get_datastore()
except datastore.DatastoreException as err:
self.logger.error('Cannot initialize datastore: %s', str(err))
sys.exit(1)
self.configstore = ConfigStore(self.datastore)
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 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 parse_config(self, filename):
try:
with open(filename, 'r') as f:
self.config = json.load(f)
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)
self.plugin_dirs = self.config['dscached']['plugin-dirs']
def connect(self):
while True:
try:
self.client.connect('unix:')
self.client.login_service('dscached')
self.client.enable_server(self.rpc)
self.client.resume_service('dscached.account')
self.client.resume_service('dscached.group')
self.client.resume_service('dscached.host')
self.client.resume_service('dscached.idmap')
self.client.resume_service('dscached.management')
self.client.resume_service('dscached.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 scan_plugins(self):
for i in self.plugin_dirs:
self.scan_plugin_dir(i)
def scan_plugin_dir(self, dir):
self.logger.debug('Scanning plugin directory %s', dir)
for f in os.listdir(dir):
name, ext = os.path.splitext(os.path.basename(f))
if ext != '.py':
continue
try:
plugin = load_module_from_file(name, os.path.join(dir, f))
plugin._init(self)
except:
self.logger.error('Cannot initialize plugin {0}'.format(f),
exc_info=True)
def register_plugin(self, name, cls):
self.plugins[name] = cls
self.logger.info('Registered plugin {0} (class {1})'.format(name, cls))
def register_schema(self, name, schema):
self.client.register_schema(name, schema)
def register_schemas(self):
from freenas.dispatcher.model import context
for name, schema in (s.__named_json_schema__()
for s in context.local_json_schema_objects):
self.logger.debug(f'Registering schema: {name}')
self.client.register_schema(name, schema)
def init_directories(self):
for i in self.datastore.query('directories'):
try:
directory = Directory(self, i)
self.directories.append(directory)
directory.configure()
except:
continue
def load_config(self):
self.search_order = self.configstore.get('directory.search_order')
self.cache_ttl = self.configstore.get('directory.cache_ttl')
self.cache_enumerations = self.configstore.get(
'directory.cache_enumerations')
self.cache_lookups = self.configstore.get('directory.cache_lookups')
self.home_directory_root = self.configstore.get(
'system.home_directory_root')
def checkin(self):
checkin()
def main(self):
parser = argparse.ArgumentParser()
parser.add_argument('-c',
metavar='CONFIG',
default=DEFAULT_CONFIGFILE,
help='Middleware config file')
parser.add_argument('-s',
metavar='SOCKET',
default=DEFAULT_SOCKET_ADDRESS,
help='Socket address to listen on')
args = parser.parse_args()
configure_logging('dscached', 'DEBUG')
setproctitle('dscached')
self.config = args.c
self.parse_config(self.config)
self.init_datastore()
self.init_dispatcher()
self.load_config()
self.init_server(args.s)
self.scan_plugins()
self.register_schemas()
self.wait_for_etcd()
self.init_directories()
self.checkin()
self.client.wait_forever()
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()
class Main(object):
def __init__(self):
self.logger = logging.getLogger('dscached')
self.config = None
self.datastore = None
self.configstore = None
self.rpc = RpcContext()
self.rpc.streaming_enabled = True
self.rpc.streaming_burst = 16
self.client = None
self.server = None
self.plugin_dirs = []
self.plugins = {}
self.directories = []
self.users_cache = TTLCacheStore()
self.groups_cache = TTLCacheStore()
self.hosts_cache = TTLCacheStore()
self.cache_ttl = 7200
self.search_order = []
self.cache_enumerations = True
self.cache_lookups = True
self.rpc.register_service_instance('dscached.account', AccountService(self))
self.rpc.register_service_instance('dscached.group', GroupService(self))
self.rpc.register_service_instance('dscached.host', HostService(self))
self.rpc.register_service_instance('dscached.management', ManagementService(self))
self.rpc.register_service_instance('dscached.debug', DebugService())
def get_enabled_directories(self):
return list(filter(None, (self.get_directory_by_name(n) for n in self.get_search_order())))
def get_search_order(self):
return ['local', 'system'] + self.search_order
def get_directory_by_domain(self, domain_name):
return first_or_default(lambda d: d.domain_name == domain_name, self.directories)
def get_directory_by_name(self, name):
return first_or_default(lambda d: d.name == name, self.directories)
def get_directory_for_id(self, uid=None, gid=None):
if uid is not None:
if uid == 0:
# Special case for root user
return first_or_default(lambda d: d.plugin_type == 'local', self.directories)
return first_or_default(
lambda d: d.max_uid and d.max_uid >= uid >= d.min_uid,
self.directories
)
if gid is not None:
if gid == 0:
# Special case for wheel group
return first_or_default(lambda d: d.plugin_type == 'local', self.directories)
return first_or_default(
lambda d: d.max_gid and d.max_gid >= gid >= d.min_gid,
self.directories
)
def init_datastore(self):
try:
self.datastore = datastore.get_datastore()
except datastore.DatastoreException as err:
self.logger.error('Cannot initialize datastore: %s', str(err))
sys.exit(1)
self.configstore = ConfigStore(self.datastore)
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 init_server(self, address):
self.server = Server(self)
self.server.rpc = self.rpc
self.server.start(address)
thread = Thread(target=self.server.serve_forever)
thread.name = 'ServerThread'
thread.daemon = True
thread.start()
def parse_config(self, filename):
try:
with open(filename, 'r') as f:
self.config = json.load(f)
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)
self.plugin_dirs = self.config['dscached']['plugin-dirs']
def connect(self):
while True:
try:
self.client.connect('unix:')
self.client.login_service('dscached')
self.client.enable_server(self.rpc)
self.client.resume_service('dscached.account')
self.client.resume_service('dscached.group')
self.client.resume_service('dscached.host')
self.client.resume_service('dscached.management')
self.client.resume_service('dscached.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 scan_plugins(self):
for i in self.plugin_dirs:
self.scan_plugin_dir(i)
def scan_plugin_dir(self, dir):
self.logger.debug('Scanning plugin directory %s', dir)
for f in os.listdir(dir):
name, ext = os.path.splitext(os.path.basename(f))
if ext != '.py':
continue
try:
plugin = imp.load_source(name, os.path.join(dir, f))
plugin._init(self)
except:
self.logger.error('Cannot initialize plugin {0}'.format(f), exc_info=True)
def register_plugin(self, name, cls):
self.plugins[name] = cls
self.logger.info('Registered plugin {0} (class {1})'.format(name, cls))
def register_schema(self, name, schema):
self.client.register_schema(name, schema)
def init_directories(self):
for i in self.datastore.query('directories'):
try:
directory = Directory(self, i)
directory.configure()
self.directories.append(directory)
except BaseException as err:
continue
def load_config(self):
self.search_order = self.configstore.get('directory.search_order')
self.cache_ttl = self.configstore.get('directory.cache_ttl')
self.cache_enumerations = self.configstore.get('directory.cache_enumerations')
self.cache_lookups = self.configstore.get('directory.cache_lookups')
def main(self):
parser = argparse.ArgumentParser()
parser.add_argument('-c', metavar='CONFIG', default=DEFAULT_CONFIGFILE, help='Middleware config file')
parser.add_argument('-s', metavar='SOCKET', default=DEFAULT_SOCKET_ADDRESS, help='Socket address to listen on')
args = parser.parse_args()
configure_logging('/var/log/dscached.log', 'DEBUG')
setproctitle.setproctitle('dscached')
self.config = args.c
self.parse_config(self.config)
self.init_datastore()
self.init_dispatcher()
self.load_config()
self.init_server(args.s)
self.scan_plugins()
self.init_directories()
self.client.wait_forever()
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()
class Context(object):
def __init__(self):
self.store = collections.deque()
self.lock = threading.Lock()
self.seqno = 0
self.rpc_server = Server(self)
self.boot_id = str(uuid.uuid4())
self.exiting = False
self.server = None
self.servers = []
self.klog_reader = None
self.flush = False
self.flush_thread = None
self.datastore = None
self.started_at = datetime.utcnow()
self.rpc = RpcContext()
self.rpc.register_service_instance('logd.logging',
LoggingService(self))
self.rpc.register_service_instance('logd.debug', DebugService())
self.cv = threading.Condition()
def init_datastore(self):
try:
self.datastore = datastore.get_datastore(log=True)
self.datastore.insert(
'boots', {
'id': self.boot_id,
'booted_at': self.started_at,
'hostname': socket.gethostname()
})
except datastore.DatastoreException as err:
logging.error('Cannot initialize datastore: %s', str(err))
sys.exit(1)
def init_rpc_server(self):
self.server = Server(self)
self.server.rpc = self.rpc
self.rpc.streaming_enabled = True
self.rpc.streaming_burst = 16
self.server.streaming = True
self.server.start(DEFAULT_SOCKET_ADDRESS,
transport_options={'permissions': 0o666})
thread = threading.Thread(target=self.server.serve_forever,
name='RPC server thread',
daemon=True)
thread.start()
def init_syslog_server(self):
for path, perm in SYSLOG_SOCKETS.items():
server = SyslogServer(path, perm, self)
server.start()
self.servers.append(server)
def init_klog(self):
self.klog_reader = KernelLogReader(self)
thread = threading.Thread(target=self.klog_reader.process,
name='klog reader',
daemon=True)
thread.start()
def init_flush(self):
self.flush_thread = threading.Thread(target=self.do_flush,
name='Flush thread')
self.flush_thread.start()
def push(self, item):
if not item:
return
if 'message' not in item or 'priority' not in item:
return
if 'timestamp' not in item:
item['timestamp'] = datetime.now()
if 'pid' in item:
try:
job = get_job_by_pid(item['pid'], True)
item['service'] = job['Label']
except ServicedException:
pass
with self.lock:
priority, facility = parse_priority(item['priority'])
item.update({
'id': str(uuid.uuid4()),
'seqno': self.seqno,
'boot_id': self.boot_id,
'priority': priority.name,
'facility': facility.name if facility else None
})
self.store.append(item)
self.seqno += 1
self.server.broadcast_event('logd.logging.message', item)
def do_flush(self):
logging.debug('Flush thread initialized')
while True:
# Flush immediately after getting wakeup or when timeout expires
with self.cv:
self.cv.wait(FLUSH_INTERVAL)
if not self.flush:
continue
if not self.datastore:
try:
self.init_datastore()
logging.info('Datastore initialized')
except BaseException as err:
logging.warning(
'Cannot initialize datastore: {0}'.format(err))
logging.warning('Flush skipped')
continue
logging.debug('Attempting to flush logs')
with self.lock:
for i in self.store:
self.datastore.insert('syslog', i)
self.store.clear()
if self.exiting:
return
def sigusr1(self, signo, frame):
with self.cv:
logging.info('Flushing logs on signal')
self.flush = True
self.cv.notify_all()
def main(self):
setproctitle('logd')
self.init_syslog_server()
self.init_klog()
self.init_rpc_server()
self.init_flush()
checkin()
signal.signal(signal.SIGUSR1, signal.SIG_DFL)
while True:
sig = signal.sigwait([signal.SIGTERM, signal.SIGUSR1])
if sig == signal.SIGUSR1:
with self.cv:
logging.info('Flushing logs on signal')
self.flush = True
self.cv.notify_all()
continue
if sig == signal.SIGTERM:
logging.info('Got SIGTERM, exiting')
with self.cv:
self.exiting = True
self.cv.notify_all()
self.flush_thread.join()
break
class Context(object):
def __init__(self):
self.store = collections.deque()
self.lock = threading.Lock()
self.seqno = 0
self.rpc_server = Server(self)
self.boot_id = str(uuid.uuid4())
self.exiting = False
self.server = None
self.servers = []
self.forwarders = []
self.klog_reader = None
self.flush = False
self.flush_thread = None
self.datastore = None
self.configstore = None
self.started_at = datetime.utcnow()
self.rpc = RpcContext()
self.rpc.register_service_instance('logd.logging', LoggingService(self))
self.rpc.register_service_instance('logd.debug', DebugService())
self.cv = threading.Condition()
def init_configstore(self):
ds = datastore.get_datastore()
self.configstore = datastore.config.ConfigStore(ds)
def init_datastore(self):
try:
self.datastore = datastore.get_datastore(log=True)
self.datastore.insert('boots', {
'id': self.boot_id,
'booted_at': self.started_at,
'hostname': socket.gethostname()
})
except datastore.DatastoreException as err:
logging.error('Cannot initialize datastore: %s', str(err))
sys.exit(1)
def init_rpc_server(self):
self.server = Server(self)
self.server.rpc = self.rpc
self.rpc.streaming_enabled = True
self.rpc.streaming_burst = 16
self.server.streaming = True
self.server.start(DEFAULT_SOCKET_ADDRESS, transport_options={'permissions': 0o666})
thread = threading.Thread(target=self.server.serve_forever, name='RPC server thread', daemon=True)
thread.start()
def init_syslog_server(self):
for path, perm in SYSLOG_SOCKETS.items():
server = SyslogServer(path, perm, self)
server.start()
self.servers.append(server)
def init_klog(self):
self.klog_reader = KernelLogReader(self)
thread = threading.Thread(target=self.klog_reader.process, name='klog reader', daemon=True)
thread.start()
def init_flush(self):
self.flush_thread = threading.Thread(target=self.do_flush, name='Flush thread')
self.flush_thread.start()
def load_configuration(self):
syslog_server = self.configstore.get('system.syslog_server')
if not syslog_server:
if self.forwarders:
for i in self.forwarders:
i.close()
self.forwarders.clear()
return
if ':' in syslog_server:
host, port = syslog_server.split(':')
else:
host = syslog_server
port = 514
self.forwarders.append(SyslogForwarder(host, port, self))
def push(self, item):
if not item:
return
if 'message' not in item or 'priority' not in item:
return
if 'timestamp' not in item:
item['timestamp'] = datetime.now()
if 'pid' in item:
try:
job = get_job_by_pid(item['pid'], True)
item['service'] = job['Label']
except ServicedException:
pass
with self.lock:
priority, facility = parse_priority(item['priority'])
item.update({
'id': str(uuid.uuid4()),
'seqno': self.seqno,
'boot_id': self.boot_id,
'priority': priority.name,
'facility': facility.name if facility else None
})
self.store.append(item)
self.seqno += 1
self.server.broadcast_event('logd.logging.message', item)
self.forward(item)
def forward(self, item):
hostname = socket.gethostname()
prio = SyslogPriority.INFO
try:
prio = int(getattr(SyslogPriority, item['priority']))
except:
pass
msg = f'<{prio}>{item["timestamp"]:%b %d %H:%M:%S} {hostname} {item["identifier"]}: {item["message"]}'
for i in self.forwarders:
i.forward(msg.encode('utf-8', 'ignore'))
def do_flush(self):
logging.debug('Flush thread initialized')
while True:
# Flush immediately after getting wakeup or when timeout expires
with self.cv:
self.cv.wait(FLUSH_INTERVAL)
if not self.flush:
continue
if not self.datastore:
try:
self.init_datastore()
logging.info('Datastore initialized')
except BaseException as err:
logging.warning('Cannot initialize datastore: {0}'.format(err))
logging.warning('Flush skipped')
continue
logging.debug('Attempting to flush logs')
with self.lock:
for i in self.store:
self.datastore.insert('syslog', i)
self.store.clear()
if self.exiting:
return
def sigusr1(self, signo, frame):
with self.cv:
logging.info('Flushing logs on signal')
self.flush = True
self.cv.notify_all()
def main(self):
setproctitle('logd')
self.init_configstore()
self.init_syslog_server()
self.init_klog()
self.init_rpc_server()
self.init_flush()
self.load_configuration()
checkin()
signal.signal(signal.SIGUSR1, signal.SIG_DFL)
signal.signal(signal.SIGHUP, signal.SIG_DFL)
while True:
sig = signal.sigwait([signal.SIGTERM, signal.SIGUSR1, signal.SIGHUP])
if sig == signal.SIGUSR1:
with self.cv:
logging.info('Flushing logs on signal')
self.flush = True
self.cv.notify_all()
continue
if sig == signal.SIGHUP:
logging.info('Reloading configuration on SIGHUP')
self.load_configuration()
continue
if sig == signal.SIGTERM:
logging.info('Got SIGTERM, exiting')
with self.cv:
self.exiting = True
self.cv.notify_all()
self.flush_thread.join()
break