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swh/provenance/api/server.py

# Copyright (C) 2021 The Software Heritage developers # Copyright (C) 2021 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution # See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version # License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information # See top-level LICENSE file for more information
from collections import Counter
from datetime import datetime
from enum import Enum
import functools
import logging import logging
import multiprocessing
import os import os
from typing import Any, Dict, List, Optional import queue
import threading
from typing import Any, Callable
from typing import Counter as TCounter
from typing import Dict, Generator, Iterable, List, Optional, Set, Tuple, Union, cast
import pika
import pika.channel
import pika.connection
import pika.exceptions
from pika.exchange_type import ExchangeType
import pika.frame
import pika.spec
from werkzeug.routing import Rule from werkzeug.routing import Rule
from swh.core import config from swh.core import config
from swh.core.api import JSONFormatter, MsgpackFormatter, RPCServerApp, negotiate from swh.core.api import JSONFormatter, MsgpackFormatter, RPCServerApp, negotiate
from swh.core.api.serializers import encode_data_client as encode_data
from swh.core.api.serializers import msgpack_loads as decode_data
from swh.model.model import Sha1Git
from swh.provenance import get_provenance_storage from swh.provenance import get_provenance_storage
from swh.provenance.interface import ProvenanceStorageInterface from swh.provenance.interface import (
EntityType,
ProvenanceStorageInterface,
RelationData,
RelationType,
RevisionData,
)
from .serializers import DECODERS, ENCODERS from .serializers import DECODERS, ENCODERS
LOG_FORMAT = (
"%(levelname) -10s %(asctime)s %(name) -30s %(funcName) "
"-35s %(lineno) -5d: %(message)s"
)
LOGGER = logging.getLogger(__name__)
TERMINATE = object()
storage: Optional[ProvenanceStorageInterface] = None storage: Optional[ProvenanceStorageInterface] = None
def get_global_provenance_storage() -> ProvenanceStorageInterface: def get_global_provenance_storage() -> ProvenanceStorageInterface:
global storage global storage
if storage is None: if storage is None:
storage = get_provenance_storage(**app.config["provenance"]["storage"]) storage = get_provenance_storage(**app.config["provenance"]["storage"])
return storage return storage
▲ Show 20 Lines • Show All 114 Lines • ▼ Show 20 Linesdef make_app_from_configfile() -> ProvenanceStorageRPCServerApp:
global api_cfg global api_cfg
if api_cfg is None: if api_cfg is None:
config_path = os.environ.get("SWH_CONFIG_FILENAME") config_path = os.environ.get("SWH_CONFIG_FILENAME")
api_cfg = load_and_check_config(config_path) api_cfg = load_and_check_config(config_path)
app.config.update(api_cfg) app.config.update(api_cfg)
handler = logging.StreamHandler() handler = logging.StreamHandler()
app.logger.addHandler(handler) app.logger.addHandler(handler)
return app return app
class ServerCommand(Enum):
TERMINATE = "terminate"
CONSUMING = "consuming"
class TerminateSignal(BaseException):
pass
def resolve_dates(
dates: Iterable[Union[Tuple[Sha1Git, Optional[datetime]], Tuple[Sha1Git]]]
) -> Dict[Sha1Git, Optional[datetime]]:
result: Dict[Sha1Git, Optional[datetime]] = {}
for row in dates:
sha1 = row[0]
date = (
cast(Tuple[Sha1Git, Optional[datetime]], row)[1] if len(row) > 1 else None
)
known = result.setdefault(sha1, None)
if date is not None and (known is None or date < known):
result[sha1] = date
return result
def resolve_revision(
data: Iterable[Union[Tuple[Sha1Git, RevisionData], Tuple[Sha1Git]]]
) -> Dict[Sha1Git, RevisionData]:
result: Dict[Sha1Git, RevisionData] = {}
for row in data:
sha1 = row[0]
rev = (
cast(Tuple[Sha1Git, RevisionData], row)[1]
if len(row) > 1
else RevisionData(date=None, origin=None)
)
known = result.setdefault(sha1, RevisionData(date=None, origin=None))
value = known
if rev.date is not None and (known.date is None or rev.date < known.date):
value = RevisionData(date=rev.date, origin=value.origin)
if rev.origin is not None:
value = RevisionData(date=value.date, origin=rev.origin)
if value != known:
result[sha1] = value
return result
def resolve_relation(
data: Iterable[Tuple[Sha1Git, Sha1Git, bytes]]
) -> Dict[Sha1Git, Set[RelationData]]:
result: Dict[Sha1Git, Set[RelationData]] = {}
for src, dst, path in data:
result.setdefault(src, set()).add(RelationData(dst=dst, path=path))
return result
class ProvenanceStorageRabbitMQWorker(multiprocessing.Process):
"""This is an example publisher that will handle unexpected interactions
with RabbitMQ such as channel and connection closures.
If RabbitMQ closes the connection, it will reopen it. You should
look at the output, as there are limited reasons why the connection may
be closed, which usually are tied to permission related issues or
socket timeouts.
It uses delivery confirmations and illustrates one way to keep track of
messages that have been sent and if they've been confirmed by RabbitMQ.
"""
EXCHANGE_TYPE = ExchangeType.direct
extra_type_decoders = DECODERS
extra_type_encoders = ENCODERS
def __init__(
self, url: str, exchange: str, range: int, storage_config: Dict[str, Any]
) -> None:
"""Setup the example publisher object, passing in the URL we will use
to connect to RabbitMQ.
:param str url: The URL for connecting to RabbitMQ
:param str routing_key: The routing key name from which this worker will
consume messages
:param str storage_config: Configuration parameters for the underlying
``ProvenanceStorage`` object
"""
super().__init__(name=f"{exchange}_{range:x}")
self._connection = None
self._channel = None
self._closing = False
self._consumer_tag: Dict[str, str] = {}
self._consuming: Dict[str, bool] = {}
self._prefetch_count = 100
self._url = url
self._exchange = exchange
self._binding_keys = list(
ProvenanceStorageRabbitMQServer.get_binding_keys(self._exchange, range)
)
self._queues: Dict[str, str] = {}
self._storage_config = storage_config
self._batch_size = 100
self.command: multiprocessing.Queue = multiprocessing.Queue()
self.signal: multiprocessing.Queue = multiprocessing.Queue()
def connect(self) -> pika.SelectConnection:
"""This method connects to RabbitMQ, returning the connection handle.
When the connection is established, the on_connection_open method
will be invoked by pika.
:rtype: pika.SelectConnection
"""
LOGGER.info("Connecting to %s", self._url)
return pika.SelectConnection(
parameters=pika.URLParameters(self._url),
on_open_callback=self.on_connection_open,
on_open_error_callback=self.on_connection_open_error,
on_close_callback=self.on_connection_closed,
)
def close_connection(self) -> None:
assert self._connection is not None
self._consuming = {binding_key: False for binding_key in self._binding_keys}
if self._connection.is_closing or self._connection.is_closed:
LOGGER.info("Connection is closing or already closed")
else:
LOGGER.info("Closing connection")
self._connection.close()
def on_connection_open(self, _unused_connection: pika.SelectConnection) -> None:
"""This method is called by pika once the connection to RabbitMQ has
been established. It passes the handle to the connection object in
case we need it, but in this case, we'll just mark it unused.
:param pika.SelectConnection _unused_connection: The connection
"""
LOGGER.info("Connection opened")
self.open_channel()
def on_connection_open_error(
self, _unused_connection: pika.SelectConnection, err: Exception
) -> None:
"""This method is called by pika if the connection to RabbitMQ
can't be established.
:param pika.SelectConnection _unused_connection: The connection
:param Exception err: The error
"""
LOGGER.error("Connection open failed, reopening in 5 seconds: %s", err)
assert self._connection is not None
self._connection.ioloop.call_later(5, self._connection.ioloop.stop)
def on_connection_closed(self, _unused_connection: pika.SelectConnection, reason):
"""This method is invoked by pika when the connection to RabbitMQ is
closed unexpectedly. Since it is unexpected, we will reconnect to
RabbitMQ if it disconnects.
:param pika.connection.Connection connection: The closed connection obj
:param Exception reason: exception representing reason for loss of
connection.
"""
assert self._connection is not None
self._channel = None
if self._closing:
self._connection.ioloop.stop()
else:
LOGGER.warning("Connection closed, reopening in 5 seconds: %s", reason)
self._connection.ioloop.call_later(5, self._connection.ioloop.stop)
def open_channel(self) -> None:
"""Open a new channel with RabbitMQ by issuing the Channel.Open RPC
command. When RabbitMQ responds that the channel is open, the
on_channel_open callback will be invoked by pika.
"""
LOGGER.info("Creating a new channel")
assert self._connection is not None
self._connection.channel(on_open_callback=self.on_channel_open)
def on_channel_open(self, channel: pika.channel.Channel) -> None:
"""This method is invoked by pika when the channel has been opened.
The channel object is passed in so we can make use of it.
Since the channel is now open, we'll declare the exchange to use.
:param pika.channel.Channel channel: The channel object
"""
LOGGER.info("Channel opened")
self._channel = channel
LOGGER.info("Adding channel close callback")
assert self._channel is not None
self._channel.add_on_close_callback(callback=self.on_channel_closed)
self.setup_exchange()
def on_channel_closed(
self, channel: pika.channel.Channel, reason: Exception
) -> None:
"""Invoked by pika when RabbitMQ unexpectedly closes the channel.
Channels are usually closed if you attempt to do something that
violates the protocol, such as re-declare an exchange or queue with
different parameters. In this case, we'll close the connection
to shutdown the object.
:param pika.channel.Channel: The closed channel
:param Exception reason: why the channel was closed
"""
LOGGER.warning("Channel %i was closed: %s", channel, reason)
self.close_connection()
def setup_exchange(self) -> None:
"""Setup the exchange on RabbitMQ by invoking the Exchange.Declare RPC
command. When it is complete, the on_exchange_declare_ok method will
be invoked by pika.
"""
LOGGER.info("Declaring exchange %s", self._exchange)
assert self._channel is not None
self._channel.exchange_declare(
exchange=self._exchange,
exchange_type=self.EXCHANGE_TYPE,
callback=self.on_exchange_declare_ok,
)
def on_exchange_declare_ok(self, _unused_frame: pika.frame.Method) -> None:
"""Invoked by pika when RabbitMQ has finished the Exchange.Declare RPC
command.
:param pika.frame.Method unused_frame: Exchange.DeclareOk response frame
"""
LOGGER.info("Exchange declared: %s", self._exchange)
self.setup_queues()
def setup_queues(self) -> None:
"""Setup the queues on RabbitMQ by invoking the Queue.Declare RPC
command. When it is complete, the on_queue_declare_ok method will
be invoked by pika.
"""
for binding_key in self._binding_keys:
LOGGER.info("Declaring queue %s", binding_key)
assert self._channel is not None
callback = functools.partial(
self.on_queue_declare_ok,
binding_key=binding_key,
)
self._channel.queue_declare(queue=binding_key, callback=callback)
def on_queue_declare_ok(self, frame: pika.frame.Method, binding_key: str) -> None:
"""Method invoked by pika when the Queue.Declare RPC call made in
setup_queue has completed. In this method we will bind the queue
and exchange together with the routing key by issuing the Queue.Bind
RPC command. When this command is complete, the on_bind_ok method will
be invoked by pika.
:param pika.frame.Method frame: The Queue.DeclareOk frame
:param str|unicode binding_key: Binding key of the queue to declare
"""
LOGGER.info(
"Binding queue %s to exchange %s with routing key %s",
frame.method.queue,
self._exchange,
binding_key,
)
assert self._channel is not None
callback = functools.partial(self.on_bind_ok, queue_name=frame.method.queue)
self._queues[binding_key] = frame.method.queue
self._channel.queue_bind(
queue=frame.method.queue,
exchange=self._exchange,
routing_key=binding_key,
callback=callback,
)
def on_bind_ok(self, _unused_frame: pika.frame.Method, queue_name: str) -> None:
"""Invoked by pika when the Queue.Bind method has completed. At this
point we will set the prefetch count for the channel.
:param pika.frame.Method _unused_frame: The Queue.BindOk response frame
:param str|unicode queue_name: The name of the queue to declare
"""
LOGGER.info("Queue bound: %s", queue_name)
self.set_qos()
def set_qos(self) -> None:
"""This method sets up the consumer prefetch to only be delivered
one message at a time. The consumer must acknowledge this message
before RabbitMQ will deliver another one. You should experiment
with different prefetch values to achieve desired performance.
"""
assert self._channel is not None
self._channel.basic_qos(
prefetch_count=self._prefetch_count, callback=self.on_basic_qos_ok
)
def on_basic_qos_ok(self, _unused_frame: pika.frame.Method) -> None:
"""Invoked by pika when the Basic.QoS method has completed. At this
point we will start consuming messages by calling start_consuming
which will invoke the needed RPC commands to start the process.
:param pika.frame.Method _unused_frame: The Basic.QosOk response frame
"""
LOGGER.info("QOS set to: %d", self._prefetch_count)
self.start_consuming()
def start_consuming(self) -> None:
"""This method sets up the consumer by first calling
add_on_cancel_callback so that the object is notified if RabbitMQ
cancels the consumer. It then issues the Basic.Consume RPC command
which returns the consumer tag that is used to uniquely identify the
consumer with RabbitMQ. We keep the value to use it when we want to
cancel consuming. The on_request method is passed in as a callback pika
will invoke when a message is fully received.
"""
LOGGER.info("Issuing consumer related RPC commands")
LOGGER.info("Adding consumer cancellation callback")
assert self._channel is not None
self._channel.add_on_cancel_callback(callback=self.on_consumer_cancelled)
for binding_key in self._binding_keys:
self._consumer_tag[binding_key] = self._channel.basic_consume(
queue=self._queues[binding_key], on_message_callback=self.on_request
)
self._consuming[binding_key] = True
self.signal.put(ServerCommand.CONSUMING)
def on_consumer_cancelled(self, method_frame: pika.frame.Method) -> None:
"""Invoked by pika when RabbitMQ sends a Basic.Cancel for a consumer
receiving messages.
:param pika.frame.Method method_frame: The Basic.Cancel frame
"""
LOGGER.info("Consumer was cancelled remotely, shutting down: %r", method_frame)
if self._channel:
self._channel.close()
def on_request(
self,
channel: pika.channel.Channel,
deliver: pika.spec.Basic.Deliver,
properties: pika.spec.BasicProperties,
body: bytes,
) -> None:
"""Invoked by pika when a message is delivered from RabbitMQ. The
channel is passed for your convenience. The deliver object that
is passed in carries the exchange, routing key, delivery tag and
a redelivered flag for the message. The properties passed in is an
instance of BasicProperties with the message properties and the body
is the message that was sent.
:param pika.channel.Channel channel: The channel object
:param pika.spec.Basic.Deliver: deliver method
:param pika.spec.BasicProperties: properties
:param bytes body: The message body
"""
LOGGER.info(
"Received message # %s from %s: %s",
deliver.delivery_tag,
properties.app_id,
body,
)
# XXX: for some reason this function is returning lists instead of tuples
# (the client send tuples)
item = decode_data(data=body, extra_decoders=self.extra_type_decoders)["data"]
self._request_queues[deliver.routing_key].put(
(tuple(item), (properties.correlation_id, properties.reply_to))
)
LOGGER.info("Acknowledging message %s", deliver.delivery_tag)
channel.basic_ack(delivery_tag=deliver.delivery_tag)
def stop_consuming(self) -> None:
"""Tell RabbitMQ that you would like to stop consuming by sending the
Basic.Cancel RPC command.
"""
if self._channel:
LOGGER.info("Sending a Basic.Cancel RPC command to RabbitMQ")
for binding_key in self._binding_keys:
callback = functools.partial(self.on_cancel_ok, binding_key=binding_key)
self._channel.basic_cancel(
self._consumer_tag[binding_key], callback=callback
)
def on_cancel_ok(self, _unused_frame: pika.frame.Method, binding_key: str) -> None:
"""This method is invoked by pika when RabbitMQ acknowledges the
cancellation of a consumer. At this point we will close the channel.
This will invoke the on_channel_closed method once the channel has been
closed, which will in-turn close the connection.
:param pika.frame.Method _unused_frame: The Basic.CancelOk frame
:param str|unicode binding_key: Binding key of of the consumer to be stopped
"""
self._consuming[binding_key] = False
LOGGER.info(
"RabbitMQ acknowledged the cancellation of the consumer: %s",
self._consuming[binding_key],
)
LOGGER.info("Closing the channel")
assert self._channel is not None
self._channel.close()
def run(self) -> None:
"""Run the example code by connecting and then starting the IOLoop."""
self._command_thread = threading.Thread(target=self.run_command_thread)
self._command_thread.start()
self._request_queues: Dict[str, queue.Queue] = {}
self._request_threads: Dict[str, threading.Thread] = {}
for binding_key in self._binding_keys:
meth_name, relation = ProvenanceStorageRabbitMQServer.get_meth_name(
binding_key
)
self._request_queues[binding_key] = queue.Queue()
self._request_threads[binding_key] = threading.Thread(
target=self.run_request_thread,
args=(binding_key, meth_name, relation),
)
self._request_threads[binding_key].start()
while not self._closing:
try:
self._connection = self.connect()
assert self._connection is not None
self._connection.ioloop.start()
except KeyboardInterrupt:
LOGGER.info("Connection closed by keyboard interruption, reopening")
if self._connection is not None:
self._connection.ioloop.stop()
except TerminateSignal as ex:
LOGGER.info("Termination requested: %s", ex)
self.stop()
if self._connection is not None and not self._connection.is_closed:
# Finish closing
self._connection.ioloop.start()
except BaseException as ex:
LOGGER.warning("Unexpected exception, terminating: %s", ex)
self.stop()
if self._connection is not None and not self._connection.is_closed:
# Finish closing
self._connection.ioloop.start()
for binding_key in self._binding_keys:
self._request_queues[binding_key].put(TERMINATE)
for binding_key in self._binding_keys:
self._request_threads[binding_key].join()
self._command_thread.join()
LOGGER.info("Stopped")
def run_command_thread(self) -> None:
while True:
try:
command = self.command.get()
if command == ServerCommand.TERMINATE:
self.request_termination()
break
except queue.Empty:
pass
except BaseException as ex:
self.request_termination(str(ex))
break
def request_termination(self, reason: str = "Normal shutdown") -> None:
assert self._connection is not None
def termination_callback():
raise TerminateSignal(reason)
self._connection.ioloop.add_callback_threadsafe(termination_callback)
def run_request_thread(
self, binding_key: str, meth_name: str, relation: Optional[RelationType]
) -> None:
storage = get_provenance_storage(**self._storage_config)
request_queue = self._request_queues[binding_key]
merge_items = ProvenanceStorageRabbitMQWorker.get_conflicts_func(meth_name)
while True:
terminate = False
elements = []
while True:
try:
# TODO: consider reducing this timeout or removing it
elem = request_queue.get(timeout=0.1)
if elem is TERMINATE:
terminate = True
break
elements.append(elem)
except queue.Empty:
break
if len(elements) >= self._batch_size:
break
if terminate:
break
if not elements:
continue
try:
items, props = zip(*elements)
acks_count: TCounter[Tuple[str, str]] = Counter(props)
data = merge_items(items)
args = (relation, data) if relation is not None else (data,)
if getattr(storage, meth_name)(*args):
for (correlation_id, reply_to), count in acks_count.items():
# FIXME: this is running in a different thread! Hence, if
# self._connection drops, there is no guarantee that the
# response can be sent for the current elements. This
# situation should be handled properly.
assert self._connection is not None
self._connection.ioloop.add_callback_threadsafe(
functools.partial(
ProvenanceStorageRabbitMQServer.respond,
channel=self._channel,
correlation_id=correlation_id,
reply_to=reply_to,
response=count,
)
)
else:
LOGGER.warning(
"Unable to process elements for queue %s", binding_key
)
for elem in elements:
request_queue.put(elem)
except BaseException as ex:
self.request_termination(str(ex))
break
storage.close()
def stop(self) -> None:
"""Cleanly shutdown the connection to RabbitMQ by stopping the consumer
with RabbitMQ. When RabbitMQ confirms the cancellation, on_cancel_ok
will be invoked by pika, which will then closing the channel and
connection. The IOLoop is started again because this method is invoked
by raising a TerminateSignal exception. This exception stops the IOLoop
which needs to be running for pika to communicate with RabbitMQ. All of
the commands issued prior to starting the IOLoop will be buffered but
not processed.
"""
assert self._connection is not None
if not self._closing:
self._closing = True
LOGGER.info("Stopping")
if any(self._consuming):
self.stop_consuming()
self._connection.ioloop.start()
else:
self._connection.ioloop.stop()
LOGGER.info("Stopped")
@staticmethod
def get_conflicts_func(meth_name: str) -> Callable[[Iterable[Any]], Any]:
if meth_name in ["content_add", "directory_add"]:
return resolve_dates
elif meth_name == "location_add":
return lambda data: set(data) # just remove duplicates
elif meth_name == "origin_add":
return lambda data: dict(data) # last processed value is good enough
elif meth_name == "revision_add":
return resolve_revision
elif meth_name == "relation_add":
return resolve_relation
else:
LOGGER.warning(
"Unexpected conflict resolution function request for method %s",
meth_name,
)
return lambda x: x
class ProvenanceStorageRabbitMQServer:
backend_class = ProvenanceStorageInterface
extra_type_decoders = DECODERS
extra_type_encoders = ENCODERS
queue_count = 16
def __init__(self, url: str, storage_config: Dict[str, Any]) -> None:
self._workers: List[ProvenanceStorageRabbitMQWorker] = []
for exchange in ProvenanceStorageRabbitMQServer.get_exchanges():
for range in ProvenanceStorageRabbitMQServer.get_ranges():
worker = ProvenanceStorageRabbitMQWorker(
url, exchange, range, storage_config
)
self._workers.append(worker)
self._running = False
def start(self) -> None:
if not self._running:
self._running = True
for worker in self._workers:
worker.start()
for worker in self._workers:
try:
signal = worker.signal.get(timeout=60)
assert signal == ServerCommand.CONSUMING
except queue.Empty:
LOGGER.error(
"Could not initialize worker %s. Leaving...", worker.name
)
self.stop()
return
LOGGER.info("Start serving")
def stop(self) -> None:
if self._running:
for worker in self._workers:
worker.command.put(ServerCommand.TERMINATE)
for worker in self._workers:
worker.join()
LOGGER.info("Stop serving")
self._running = False
@staticmethod
def ack(channel: pika.channel.Channel, delivery_tag: int) -> None:
channel.basic_ack(delivery_tag=delivery_tag)
@staticmethod
def get_binding_keys(exchange: str, range: int) -> Generator[str, None, None]:
for meth_name, relation in ProvenanceStorageRabbitMQServer.get_meth_names(
exchange
):
if relation is None:
yield f"{meth_name}.unknown.{range:x}".lower()
else:
yield f"{meth_name}.{relation.value}.{range:x}".lower()
@staticmethod
def get_exchange(meth_name: str, relation: Optional[RelationType] = None) -> str:
if meth_name == "relation_add":
assert relation is not None
split = relation.value
else:
split = meth_name
exchange, *_ = split.split("_")
return exchange
@staticmethod
def get_exchanges() -> Generator[str, None, None]:
yield from [entity.value for entity in EntityType] + ["location"]
@staticmethod
def get_meth_name(
binding_key: str,
) -> Tuple[str, Optional[RelationType]]:
meth_name, relation, *_ = binding_key.split(".")
return meth_name, (RelationType(relation) if relation != "unknown" else None)
@staticmethod
def get_meth_names(
exchange: str,
) -> Generator[Tuple[str, Optional[RelationType]], None, None]:
if exchange == EntityType.CONTENT.value:
yield from [
("content_add", None),
("relation_add", RelationType.CNT_EARLY_IN_REV),
("relation_add", RelationType.CNT_IN_DIR),
]
elif exchange == EntityType.DIRECTORY.value:
yield from [
("directory_add", None),
("relation_add", RelationType.DIR_IN_REV),
]
elif exchange == EntityType.ORIGIN.value:
yield from [("origin_add", None)]
elif exchange == EntityType.REVISION.value:
yield from [
("revision_add", None),
("relation_add", RelationType.REV_BEFORE_REV),
("relation_add", RelationType.REV_IN_ORG),
]
elif exchange == "location":
yield "location_add", None
@staticmethod
def get_ranges() -> Generator[int, None, None]:
yield from range(ProvenanceStorageRabbitMQServer.queue_count)
@staticmethod
def get_routing_key(
data: Tuple[bytes, ...], meth_name: str, relation: Optional[RelationType] = None
) -> str:
idx = (
int(data[0][0]) % ProvenanceStorageRabbitMQServer.queue_count
if data and data[0]
else 0
)
if relation is None:
return f"{meth_name}.unknown.{idx:x}".lower()
else:
return f"{meth_name}.{relation.value}.{idx:x}".lower()
@staticmethod
def is_write_method(meth_name: str) -> bool:
return "_add" in meth_name
@staticmethod
def respond(
channel: pika.channel.Channel,
correlation_id: str,
reply_to: str,
response: Any,
):
channel.basic_publish(
exchange="",
routing_key=reply_to,
properties=pika.BasicProperties(
content_type="application/msgpack",
correlation_id=correlation_id,
),
body=encode_data(
response,
extra_encoders=ProvenanceStorageRabbitMQServer.extra_type_encoders,
),
)
def make_server_from_configfile() -> ProvenanceStorageRabbitMQServer:
config_path = os.environ.get("SWH_CONFIG_FILENAME")
server_cfg = load_and_check_config(config_path)
return ProvenanceStorageRabbitMQServer(
url=server_cfg["provenance"]["rabbitmq"]["url"],
storage_config=server_cfg["provenance"]["storage"],
)
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