async def init(self):
await self.update_status('starting')
if self.config['storage']['mode'] == 'xfs':
from .xfs.agent import VolumeAgent
self.agent = VolumeAgent(self.config['storage']['path'],
self.config['agent']['user-uid'],
self.config['agent']['user-gid'])
elif self.config['storage']['mode'] == 'btrfs':
# TODO: Implement Btrfs Agent
pass
await self.agent.init()
rpc_addr = self.config['agent']['rpc-listen-addr']
self.rpc_server = Peer(
bind=ZeroMQAddress(f"tcp://{rpc_addr}"),
transport=ZeroMQRPCTransport,
scheduler=KeySerializedAsyncScheduler(),
serializer=msgpack.packb,
deserializer=msgpack.unpackb,
debug_rpc=self.config['debug']['enabled'],
)
for func_name in self.rpc_function.functions:
self.rpc_server.handle_function(func_name,
getattr(self, func_name))
log.info('started handling RPC requests at {}', rpc_addr)
await self.etcd.put('ip', rpc_addr.host, scope=ConfigScopes.NODE)
await self.update_status('running')
async def test_func_registry():
p = Peer(connect=ZeroMQAddress('tcp://127.0.0.1:5000'),
serializer=json.dumps,
deserializer=json.loads,
transport=ZeroMQRPCTransport)
def dummy():
pass
assert 'dummy' not in p._func_registry
p.handle_function('dummy', dummy)
assert 'dummy' in p._func_registry
assert p._func_registry['dummy'] is dummy
async def serve():
peer = Peer(bind=ZeroMQAddress('tcp://127.0.0.1:5010'),
transport=ZeroMQRPCTransport,
scheduler=ExitOrderedAsyncScheduler(),
serializer=json.dumps,
deserializer=json.loads)
peer.handle_function('echo', handle_echo)
peer.handle_function('add', handle_add)
peer.handle_function('print_delim', handle_delimeter)
print('echo() will take 1 second and add() will take 0.5 second.')
print('You can confirm the effect of scheduler '
'and the ordering key by the console logs.\n')
loop = asyncio.get_running_loop()
forever = loop.create_future()
loop.add_signal_handler(signal.SIGINT, forever.cancel)
loop.add_signal_handler(signal.SIGTERM, forever.cancel)
async with peer:
try:
print('server started')
await forever
except asyncio.CancelledError:
pass
print('server terminated')
async def overlapped_requests() -> None:
peer = Peer(connect=ZeroMQAddress('tcp://localhost:5020'),
transport=ZeroMQRPCTransport,
serializer=lambda o: json.dumps(o).encode('utf8'),
deserializer=lambda b: json.loads(b),
invoke_timeout=2.0)
async with peer:
t1 = asyncio.create_task(test_simple(peer))
t2 = asyncio.create_task(test_simple(peer))
t3 = asyncio.create_task(test_timeout(peer))
t4 = asyncio.create_task(test_exception(peer))
t5 = asyncio.create_task(test_timeout(peer))
t6 = asyncio.create_task(test_simple(peer, initial_delay=0.5))
t7 = asyncio.create_task(test_simple(peer, initial_delay=1.0))
results = await asyncio.gather(t1,
t2,
t3,
t4,
t5,
t6,
t7,
return_exceptions=True)
print(results)
if any(map(lambda r: isinstance(r, Exception), results)):
print('There were failed clients.')
sys.exit(1)
async def __ainit__(self) -> None:
# Start serving requests.
await self.update_status('starting')
if not self.skip_detect_manager:
await self.detect_manager()
await self.read_agent_config()
await self.read_agent_config_container()
self.stats_monitor = StatsPluginContext(self.etcd, self.local_config)
self.error_monitor = ErrorPluginContext(self.etcd, self.local_config)
await self.stats_monitor.init()
await self.error_monitor.init()
backend = self.local_config['agent']['backend']
agent_mod = importlib.import_module(f"ai.backend.agent.{backend.value}")
self.agent = await agent_mod.get_agent_cls().new( # type: ignore
self.etcd,
self.local_config,
stats_monitor=self.stats_monitor,
error_monitor=self.error_monitor,
)
rpc_addr = self.local_config['agent']['rpc-listen-addr']
self.rpc_server = Peer(
bind=ZeroMQAddress(f"tcp://{rpc_addr}"),
transport=ZeroMQRPCTransport,
scheduler=ExitOrderedAsyncScheduler(),
serializer=msgpack.packb,
deserializer=msgpack.unpackb,
debug_rpc=self.local_config['debug']['enabled'],
)
for func_name in self.rpc_function.functions:
self.rpc_server.handle_function(func_name, getattr(self, func_name))
log.info('started handling RPC requests at {}', rpc_addr)
await self.etcd.put('ip', rpc_addr.host, scope=ConfigScopes.NODE)
watcher_port = utils.nmget(self.local_config, 'watcher.service-addr.port', None)
if watcher_port is not None:
await self.etcd.put('watcher_port', watcher_port, scope=ConfigScopes.NODE)
await self.update_status('running')
async def serve() -> None:
peer = Peer(bind=ZeroMQAddress('tcp://127.0.0.1:5030'),
serializer=noop_serializer,
deserializer=noop_deserializer,
transport=ZeroMQRPCTransport)
adaptor = ThriftServerAdaptor(peer, simple_thrift.SimpleService,
SimpleDispatcher())
peer.handle_function('simple', adaptor.handle_function)
loop = asyncio.get_running_loop()
forever = loop.create_future()
loop.add_signal_handler(signal.SIGINT, forever.cancel)
loop.add_signal_handler(signal.SIGTERM, forever.cancel)
async with peer:
try:
print('server started')
await forever
except asyncio.CancelledError:
pass
print('server terminated')
async def single_client() -> None:
peer = Peer(connect=ZeroMQAddress('tcp://localhost:5020'),
transport=ZeroMQRPCTransport,
serializer=lambda o: json.dumps(o).encode('utf8'),
deserializer=lambda b: json.loads(b),
invoke_timeout=2.0)
async with peer:
await test_simple(peer)
await test_exception(peer)
await test_timeout(peer)
await test_simple(peer)
async def test_init():
p = Peer(connect=ZeroMQAddress('tcp://127.0.0.1:5000'),
serializer=json.dumps,
deserializer=json.loads,
transport=ZeroMQRPCTransport)
assert p._connect.uri == 'tcp://127.0.0.1:5000'
assert p._max_concurrency > 0
assert p._invoke_timeout is None or p._invoke_timeout > 0
assert p._exec_timeout is None or p._exec_timeout > 0
assert len(p._func_registry) == 0
async def call() -> None:
peer = Peer(connect=ZeroMQAddress('tcp://localhost:5030'),
transport=ZeroMQRPCTransport,
serializer=noop_serializer,
deserializer=noop_deserializer,
invoke_timeout=2.0)
adaptor = ThriftClientAdaptor(simple_thrift.SimpleService)
async with peer:
response = await peer.invoke('simple',
adaptor.echo(secrets.token_hex(16)))
print(f"echoed {response}")
response = await peer.invoke('simple',
adaptor.echo(secrets.token_hex(16)))
print(f"echoed {response}")
a = random.randint(1, 10)
b = random.randint(10, 20)
response = await peer.invoke('simple', adaptor.add(a, b))
print(f"{a} + {b} = {response}")
try:
response = await peer.invoke('simple', adaptor.oops())
except RPCUserError as e:
print('catched remote error as expected:')
print(textwrap.indent(e.traceback, prefix='| '))
try:
with timeout(0.5):
await peer.invoke('simple', adaptor.long_delay())
except asyncio.TimeoutError:
print('long_delay(): timeout occurred as expected '
'(with per-call timeout)')
else:
print('long_delay(): timeout did not occur!')
sys.exit(1)
try:
await peer.invoke('simple', adaptor.long_delay())
except asyncio.TimeoutError:
print('long_delay(): timeout occurred as expected '
'(with default timeout)')
else:
print('long_delay(): timeout did not occur!')
sys.exit(1)
async def multi_clients() -> None:
peer = Peer(connect=ZeroMQAddress('tcp://localhost:5020'),
transport=ZeroMQRPCTransport,
serializer=lambda o: json.dumps(o).encode('utf8'),
deserializer=lambda b: json.loads(b),
invoke_timeout=2.0)
async with peer:
await peer.invoke('memstat', {})
await peer.invoke('set_output', {'enabled': False})
with open(os.devnull, 'w', encoding='utf8') as out:
orig_stdout, sys.stdout = sys.stdout, out
try:
for _ in range(10):
c1 = asyncio.create_task(single_client())
c2 = asyncio.create_task(single_client())
c3 = asyncio.create_task(overlapped_requests())
await asyncio.gather(c1, c2, c3, return_exceptions=True)
finally:
sys.stdout = orig_stdout
await peer.invoke('set_output', {'enabled': True})
await peer.invoke('memstat', {})
async def call():
peer = Peer(connect=RedisStreamAddress('redis://localhost:6379',
'myservice', 'client-group',
'server1'),
transport=RPCRedisTransport,
serializer=json.dumps,
deserializer=json.loads,
invoke_timeout=3.0)
async with peer:
response = await peer.invoke('echo', {
'sent': secrets.token_hex(16),
})
print(f"echoed {response['received']}")
response = await peer.invoke('echo', {
'sent': secrets.token_hex(16),
})
print(f"echoed {response['received']}")
a = random.randint(1, 10)
b = random.randint(10, 20)
response = await peer.invoke('add', {
'a': a,
'b': b,
})
print(f"{a} + {b} = {response['result']}")
async def serve() -> None:
peer = Peer(bind=RedisStreamAddress('redis://localhost:6379', 'myservice',
'server-group', 'client1'),
transport=RPCRedisTransport,
serializer=lambda o: json.dumps(o).encode('utf8'),
deserializer=lambda b: json.loads(b))
peer.handle_function('echo', handle_echo)
peer.handle_function('add', handle_add)
loop = asyncio.get_running_loop()
forever = loop.create_future()
loop.add_signal_handler(signal.SIGINT, forever.cancel)
loop.add_signal_handler(signal.SIGTERM, forever.cancel)
async with peer:
try:
print('server started')
await forever
except asyncio.CancelledError:
pass
print('server terminated')
async def call() -> None:
peer = Peer(connect=ZeroMQAddress('tcp://localhost:5010'),
transport=ZeroMQRPCTransport,
serializer=lambda o: json.dumps(o).encode('utf8'),
deserializer=lambda b: json.loads(b),
invoke_timeout=5.0)
async with peer:
print(
'Check the server log to see in which order echo/add are executed.\n'
)
print('== Calling with the same ordering key ==')
tasks = [
peer.invoke('echo', {'sent': 'bbbb'}, order_key='mykey'),
peer.invoke('add', {
'a': 1,
'b': 2
}, order_key='mykey'),
]
responses = await asyncio.gather(*tasks)
print(responses)
await peer.invoke('print_delim', {})
print('== Calling without any ordering key ==')
tasks = [
peer.invoke('echo', {'sent': 'bbbb'}),
peer.invoke('add', {
'a': 1,
'b': 2
}),
]
responses = await asyncio.gather(*tasks)
print(responses)
await peer.invoke('print_delim', {})
class AgentRPCServer(aobject):
rpc_function: ClassVar[RPCFunctionRegistry] = RPCFunctionRegistry()
rpc_server: Peer
rpc_addr: str
agent: AbstractVolumeAgent
def __init__(self, etcd, config):
self.config = config
self.etcd = etcd
self.agent: AbstractVolumeAgent = None
async def init(self):
await self.update_status('starting')
if self.config['storage']['mode'] == 'xfs':
from .xfs.agent import VolumeAgent
self.agent = VolumeAgent(self.config['storage']['path'],
self.config['agent']['user-uid'],
self.config['agent']['user-gid'])
elif self.config['storage']['mode'] == 'btrfs':
# TODO: Implement Btrfs Agent
pass
await self.agent.init()
rpc_addr = self.config['agent']['rpc-listen-addr']
self.rpc_server = Peer(
bind=ZeroMQAddress(f"tcp://{rpc_addr}"),
transport=ZeroMQRPCTransport,
scheduler=KeySerializedAsyncScheduler(),
serializer=msgpack.packb,
deserializer=msgpack.unpackb,
debug_rpc=self.config['debug']['enabled'],
)
for func_name in self.rpc_function.functions:
self.rpc_server.handle_function(func_name,
getattr(self, func_name))
log.info('started handling RPC requests at {}', rpc_addr)
await self.etcd.put('ip', rpc_addr.host, scope=ConfigScopes.NODE)
await self.update_status('running')
async def shutdown(self):
if self.rpc_server is not None:
self.rpc_server.close()
await self.rpc_server.wait_closed()
async def update_status(self, status):
await self.etcd.put('', status, scope=ConfigScopes.NODE)
@aiotools.actxmgr
async def handle_rpc_exception(self):
try:
yield
except AssertionError:
log.exception('assertion failure')
raise
except Exception:
log.exception('unexpected error')
raise
@rpc_function
async def hello(self, agent_id: str) -> str:
log.debug('rpc::hello({0})', agent_id)
return 'OLLEH'
@rpc_function
async def create(self, kernel_id: str, size: str) -> str:
log.debug('rpc::create({0}, {1})', kernel_id, size)
async with self.handle_rpc_exception():
return await self.agent.create(kernel_id, size)
@rpc_function
async def remove(self, kernel_id: str):
log.debug('rpc::remove({0})', kernel_id)
async with self.handle_rpc_exception():
return await self.agent.remove(kernel_id)
@rpc_function
async def get(self, kernel_id: str) -> str:
log.debug('rpc::get({0})', kernel_id)
async with self.handle_rpc_exception():
return await self.agent.get(kernel_id)
class AgentRPCServer(aobject):
rpc_function: ClassVar[RPCFunctionRegistry] = RPCFunctionRegistry()
loop: asyncio.AbstractEventLoop
agent: AbstractAgent
rpc_server: Peer
rpc_addr: str
agent_addr: str
_stop_signal: signal.Signals
def __init__(
self,
etcd: AsyncEtcd,
local_config: Mapping[str, Any],
*,
skip_detect_manager: bool = False,
) -> None:
self.loop = current_loop()
self.etcd = etcd
self.local_config = local_config
self.skip_detect_manager = skip_detect_manager
self._stop_signal = signal.SIGTERM
async def __ainit__(self) -> None:
# Start serving requests.
await self.update_status('starting')
if not self.skip_detect_manager:
await self.detect_manager()
await self.read_agent_config()
await self.read_agent_config_container()
self.stats_monitor = StatsPluginContext(self.etcd, self.local_config)
self.error_monitor = ErrorPluginContext(self.etcd, self.local_config)
await self.stats_monitor.init()
await self.error_monitor.init()
backend = self.local_config['agent']['backend']
agent_mod = importlib.import_module(f"ai.backend.agent.{backend.value}")
self.agent = await agent_mod.get_agent_cls().new( # type: ignore
self.etcd,
self.local_config,
stats_monitor=self.stats_monitor,
error_monitor=self.error_monitor,
)
rpc_addr = self.local_config['agent']['rpc-listen-addr']
self.rpc_server = Peer(
bind=ZeroMQAddress(f"tcp://{rpc_addr}"),
transport=ZeroMQRPCTransport,
scheduler=ExitOrderedAsyncScheduler(),
serializer=msgpack.packb,
deserializer=msgpack.unpackb,
debug_rpc=self.local_config['debug']['enabled'],
)
for func_name in self.rpc_function.functions:
self.rpc_server.handle_function(func_name, getattr(self, func_name))
log.info('started handling RPC requests at {}', rpc_addr)
await self.etcd.put('ip', rpc_addr.host, scope=ConfigScopes.NODE)
watcher_port = utils.nmget(self.local_config, 'watcher.service-addr.port', None)
if watcher_port is not None:
await self.etcd.put('watcher_port', watcher_port, scope=ConfigScopes.NODE)
await self.update_status('running')
async def detect_manager(self):
log.info('detecting the manager...')
manager_instances = await self.etcd.get_prefix('nodes/manager')
if not manager_instances:
log.warning('watching etcd to wait for the manager being available')
async with aclosing(self.etcd.watch_prefix('nodes/manager')) as agen:
async for ev in agen:
if ev.event == 'put' and ev.value == 'up':
break
log.info('detected at least one manager running')
async def read_agent_config(self):
# Fill up Redis configs from etcd.
self.local_config['redis'] = config.redis_config_iv.check(
await self.etcd.get_prefix('config/redis')
)
log.info('configured redis_addr: {0}', self.local_config['redis']['addr'])
# Fill up vfolder configs from etcd.
self.local_config['vfolder'] = config.vfolder_config_iv.check(
await self.etcd.get_prefix('volumes')
)
if self.local_config['vfolder']['mount'] is None:
log.info('assuming use of storage-proxy since vfolder mount path is not configured in etcd')
else:
log.info('configured vfolder mount base: {0}', self.local_config['vfolder']['mount'])
log.info('configured vfolder fs prefix: {0}', self.local_config['vfolder']['fsprefix'])
# Fill up shared agent configurations from etcd.
agent_etcd_config = agent_etcd_config_iv.check(
await self.etcd.get_prefix('config/agent')
)
for k, v in agent_etcd_config.items():
self.local_config['agent'][k] = v
async def read_agent_config_container(self):
# Fill up global container configurations from etcd.
try:
container_etcd_config = container_etcd_config_iv.check(
await self.etcd.get_prefix('config/container')
)
except TrafaretDataError as etrafa:
log.warning("etcd: container-config error: {}".format(etrafa))
container_etcd_config = {}
for k, v in container_etcd_config.items():
self.local_config['container'][k] = v
log.info("etcd: container-config: {}={}".format(k, v))
async def __aenter__(self) -> None:
await self.rpc_server.__aenter__()
def mark_stop_signal(self, stop_signal: signal.Signals) -> None:
self._stop_signal = stop_signal
async def __aexit__(self, *exc_info) -> None:
# Stop receiving further requests.
await self.rpc_server.__aexit__(*exc_info)
await self.agent.shutdown(self._stop_signal)
await self.stats_monitor.cleanup()
await self.error_monitor.cleanup()
@collect_error
async def update_status(self, status):
await self.etcd.put('', status, scope=ConfigScopes.NODE)
@rpc_function
@collect_error
async def ping(self, msg: str) -> str:
log.debug('rpc::ping()')
return msg
@rpc_function
@collect_error
async def gather_hwinfo(self) -> Mapping[str, HardwareMetadata]:
log.debug('rpc::gather_hwinfo()')
return await self.agent.gather_hwinfo()
@rpc_function
@collect_error
async def ping_kernel(self, kernel_id: str):
log.debug('rpc::ping_kernel({0})', kernel_id)
@rpc_function
@collect_error
async def create_kernels(
self,
creation_id: str,
raw_session_id: str,
raw_kernel_ids: Sequence[str],
raw_configs: Sequence[dict],
raw_cluster_info: dict,
):
cluster_info = cast(ClusterInfo, raw_cluster_info)
session_id = SessionId(UUID(raw_session_id))
raw_results = []
coros = []
for raw_kernel_id, raw_config in zip(raw_kernel_ids, raw_configs):
log.info('rpc::create_kernel(k:{0}, img:{1})',
raw_kernel_id, raw_config['image']['canonical'])
kernel_id = KernelId(UUID(raw_kernel_id))
kernel_config = cast(KernelCreationConfig, raw_config)
coros.append(self.agent.create_kernel(
creation_id,
session_id,
kernel_id,
kernel_config,
cluster_info,
))
results = await asyncio.gather(*coros, return_exceptions=True)
errors = [*filter(lambda item: isinstance(item, Exception), results)]
if errors:
# Raise up the first error.
raise errors[0]
raw_results = [
{
'id': str(result['id']),
'kernel_host': result['kernel_host'],
'repl_in_port': result['repl_in_port'],
'repl_out_port': result['repl_out_port'],
'stdin_port': result['stdin_port'], # legacy
'stdout_port': result['stdout_port'], # legacy
'service_ports': result['service_ports'],
'container_id': result['container_id'],
'resource_spec': result['resource_spec'],
'attached_devices': result['attached_devices'],
}
for result in results
]
return raw_results
@rpc_function
@collect_error
async def destroy_kernel(
self,
kernel_id: str,
reason: str = None,
suppress_events: bool = False,
):
log.info('rpc::destroy_kernel(k:{0})', kernel_id)
done = asyncio.Event()
await self.agent.inject_container_lifecycle_event(
KernelId(UUID(kernel_id)),
LifecycleEvent.DESTROY,
reason or 'user-requested',
done_event=done,
suppress_events=suppress_events,
)
await done.wait()
return getattr(done, '_result', None)
@rpc_function
@collect_error
async def interrupt_kernel(self, kernel_id: str):
log.info('rpc::interrupt_kernel(k:{0})', kernel_id)
await self.agent.interrupt_kernel(KernelId(UUID(kernel_id)))
@rpc_function
@collect_error
async def get_completions(self, kernel_id: str,
text: str, opts: dict):
log.debug('rpc::get_completions(k:{0}, ...)', kernel_id)
await self.agent.get_completions(KernelId(UUID(kernel_id)), text, opts)
@rpc_function
@collect_error
async def get_logs(self, kernel_id: str):
log.info('rpc::get_logs(k:{0})', kernel_id)
return await self.agent.get_logs(KernelId(UUID(kernel_id)))
@rpc_function
@collect_error
async def restart_kernel(
self,
creation_id: str,
session_id: str,
kernel_id: str,
updated_config: dict,
):
log.info('rpc::restart_kernel(s:{0}, k:{1})', session_id, kernel_id)
return await self.agent.restart_kernel(
creation_id,
SessionId(UUID(session_id)),
KernelId(UUID(kernel_id)),
cast(KernelCreationConfig, updated_config),
)
@rpc_function
@collect_error
async def execute(
self,
kernel_id, # type: str
api_version, # type: int
run_id, # type: str
mode, # type: Literal['query', 'batch', 'continue', 'input']
code, # type: str
opts, # type: Dict[str, Any]
flush_timeout, # type: float
):
# type: (...) -> Dict[str, Any]
if mode != 'continue':
log.info('rpc::execute(k:{0}, run-id:{1}, mode:{2}, code:{3!r})',
kernel_id, run_id, mode,
code[:20] + '...' if len(code) > 20 else code)
result = await self.agent.execute(
KernelId(UUID(kernel_id)),
run_id,
mode,
code,
opts=opts,
api_version=api_version,
flush_timeout=flush_timeout
)
return result
@rpc_function
@collect_error
async def execute_batch(
self,
kernel_id, # type: str
startup_command, # type: str
) -> None:
# TODO: use task-group to keep track of completion/cancellation
asyncio.create_task(self.agent.execute_batch(
KernelId(UUID(kernel_id)),
startup_command,
))
await asyncio.sleep(0)
@rpc_function
@collect_error
async def start_service(
self,
kernel_id, # type: str
service, # type: str
opts # type: Dict[str, Any]
):
# type: (...) -> Dict[str, Any]
log.info('rpc::start_service(k:{0}, app:{1})', kernel_id, service)
return await self.agent.start_service(KernelId(UUID(kernel_id)), service, opts)
@rpc_function
@collect_error
async def shutdown_service(
self,
kernel_id, # type: str
service, # type: str
):
log.info('rpc::shutdown_service(k:{0}, app:{1})', kernel_id, service)
return await self.agent.shutdown_service(KernelId(UUID(kernel_id)), service)
@rpc_function
@collect_error
async def upload_file(self, kernel_id: str, filename: str, filedata: bytes):
log.info('rpc::upload_file(k:{0}, fn:{1})', kernel_id, filename)
await self.agent.accept_file(KernelId(UUID(kernel_id)), filename, filedata)
@rpc_function
@collect_error
async def download_file(self, kernel_id: str, filepath: str):
log.info('rpc::download_file(k:{0}, fn:{1})', kernel_id, filepath)
return await self.agent.download_file(KernelId(UUID(kernel_id)), filepath)
@rpc_function
@collect_error
async def list_files(self, kernel_id: str, path: str):
log.info('rpc::list_files(k:{0}, fn:{1})', kernel_id, path)
return await self.agent.list_files(KernelId(UUID(kernel_id)), path)
@rpc_function
@collect_error
async def shutdown_agent(self, terminate_kernels: bool):
# TODO: implement
log.info('rpc::shutdown_agent()')
pass
@rpc_function
@collect_error
async def create_overlay_network(self, network_name: str) -> None:
log.debug('rpc::create_overlay_network(name:{})', network_name)
return await self.agent.create_overlay_network(network_name)
@rpc_function
@collect_error
async def destroy_overlay_network(self, network_name: str) -> None:
log.debug('rpc::destroy_overlay_network(name:{})', network_name)
return await self.agent.destroy_overlay_network(network_name)
@rpc_function
@collect_error
async def create_local_network(self, network_name: str) -> None:
log.debug('rpc::create_local_network(name:{})', network_name)
return await self.agent.create_local_network(network_name)
@rpc_function
@collect_error
async def destroy_local_network(self, network_name: str) -> None:
log.debug('rpc::destroy_local_network(name:{})', network_name)
return await self.agent.destroy_local_network(network_name)
@rpc_function
@collect_error
async def reset_agent(self):
log.debug('rpc::reset()')
kernel_ids = tuple(self.agent.kernel_registry.keys())
tasks = []
for kernel_id in kernel_ids:
try:
task = asyncio.ensure_future(
self.agent.destroy_kernel(kernel_id, 'agent-reset'))
tasks.append(task)
except Exception:
await self.error_monitor.capture_exception()
log.exception('reset: destroying {0}', kernel_id)
await asyncio.gather(*tasks)
async def serve(scheduler_type: str) -> None:
global last_snapshot, scheduler
sched_cls = scheduler_types[scheduler_type]
scheduler = sched_cls()
peer = Peer(bind=ZeroMQAddress('tcp://127.0.0.1:5020'),
transport=ZeroMQRPCTransport,
scheduler=scheduler,
serializer=lambda o: json.dumps(o).encode('utf8'),
deserializer=lambda b: json.loads(b))
peer.handle_function('echo', handle_echo)
peer.handle_function('add', handle_add)
peer.handle_function('long_delay', handle_long_delay)
peer.handle_function('error', handle_error)
peer.handle_function('set_output', handle_output)
peer.handle_function('memstat', handle_show_memory_stat)
loop = asyncio.get_running_loop()
forever = loop.create_future()
loop.add_signal_handler(signal.SIGINT, forever.cancel)
loop.add_signal_handler(signal.SIGTERM, forever.cancel)
try:
tracemalloc.start(10)
async with peer:
last_snapshot = tracemalloc.take_snapshot()
try:
print('server started')
await forever
except asyncio.CancelledError:
pass
print('server terminated')
finally:
tracemalloc.stop()