PubSub: Allow specifying custom encoder

Author: Ododo

src/socketio/asyncio_aiopika_manager.py

@@ -38,7 +38,8 @@ class AsyncAioPikaManager(AsyncPubSubManager):  # pragma: no cover
     name = 'asyncaiopika'
 
     def __init__(self, url='amqp://guest:guest@localhost:5672//',
-                 channel='socketio', write_only=False, logger=None):
+                 channel='socketio', write_only=False, logger=None,
+                 encoder=pickle):
         if aio_pika is None:
             raise RuntimeError('aio_pika package is not installed '
                                '(Run "pip install aio_pika" in your '
@@ -70,7 +71,7 @@ async def _publish(self, data):
         channel = await self._channel(connection)
         exchange = await self._exchange(channel)
         await exchange.publish(
-            aio_pika.Message(body=pickle.dumps(data),
+            aio_pika.Message(body=self.encoder.dumps(data),
                              delivery_mode=aio_pika.DeliveryMode.PERSISTENT),
             routing_key='*'
         )
@@ -94,7 +95,7 @@ async def _listen(self):
                 async with self.listener_queue.iterator() as queue_iter:
                     async for message in queue_iter:
                         with message.process():
-                            yield pickle.loads(message.body)
+                            yield message.body
             except Exception:
                 self._get_logger().error('Cannot receive from rabbitmq... '
                                          'retrying in '

src/socketio/asyncio_pubsub_manager.py

@@ -24,12 +24,14 @@ class AsyncPubSubManager(AsyncManager):
     """
     name = 'asyncpubsub'
 
-    def __init__(self, channel='socketio', write_only=False, logger=None):
+    def __init__(self, channel='socketio', write_only=False, logger=None,
+                 encoder=pickle):
         super().__init__()
         self.channel = channel
         self.write_only = write_only
         self.host_id = uuid.uuid4().hex
         self.logger = logger
+        self.encoder = encoder
 
     def initialize(self):
         super().initialize()
@@ -153,7 +155,13 @@ async def _thread(self):
                     if isinstance(message, dict):
                         data = message
                     else:
-                        if isinstance(message, bytes):  # pragma: no cover
+                        if self.encoder:
+                            try:
+                                data = self.encoder.loads(message)
+                            except:
+                                pass
+                        if data is None and \
+                                isinstance(message, bytes):  # pragma: no cover
                             try:
                                 data = pickle.loads(message)
                             except:

src/socketio/asyncio_redis_manager.py

@@ -32,11 +32,14 @@ class AsyncRedisManager(AsyncPubSubManager):  # pragma: no cover
                        and receiving.
     :param redis_options: additional keyword arguments to be passed to
                           ``aioredis.from_url()``.
+    :param encoder: The encoder to use for publishing and decoding data,
+                    defaults to pickle.
     """
     name = 'aioredis'
 
     def __init__(self, url='redis://localhost:6379/0', channel='socketio',
-                 write_only=False, logger=None, redis_options=None):
+                 write_only=False, logger=None, redis_options=None,
+                 encoder=pickle):
         if aioredis is None:
             raise RuntimeError('Redis package is not installed '
                                '(Run "pip install aioredis" in your '
@@ -46,7 +49,8 @@ def __init__(self, url='redis://localhost:6379/0', channel='socketio',
         self.redis_url = url
         self.redis_options = redis_options or {}
         self._redis_connect()
-        super().__init__(channel=channel, write_only=write_only, logger=logger)
+        super().__init__(channel=channel, write_only=write_only, logger=logger,
+                         encoder=encoder)
 
     def _redis_connect(self):
         self.redis = aioredis.Redis.from_url(self.redis_url,
@@ -60,7 +64,7 @@ async def _publish(self, data):
                 if not retry:
                     self._redis_connect()
                 return await self.redis.publish(
-                    self.channel, pickle.dumps(data))
+                    self.channel, self.encoder.dumps(data))
             except aioredis.exceptions.RedisError:
                 if retry:
                     self._get_logger().error('Cannot publish to redis... '

src/socketio/kafka_manager.py

@@ -33,18 +33,21 @@ class KafkaManager(PubSubManager):  # pragma: no cover
     :param write_only: If set to ``True``, only initialize to emit events. The
                        default of ``False`` initializes the class for emitting
                        and receiving.
+    :param encoder: The encoder to use for publishing and decoding data,
+                    defaults to pickle.
     """
     name = 'kafka'
 
     def __init__(self, url='kafka://localhost:9092', channel='socketio',
-                 write_only=False):
+                 write_only=False, encoder=pickle):
         if kafka is None:
             raise RuntimeError('kafka-python package is not installed '
                                '(Run "pip install kafka-python" in your '
                                'virtualenv).')
 
         super(KafkaManager, self).__init__(channel=channel,
-                                           write_only=write_only)
+                                           write_only=write_only,
+                                           encoder=encoder)
 
         urls = [url] if isinstance(url, str) else url
         self.kafka_urls = [url[8:] if url != 'kafka://' else 'localhost:9092'
@@ -54,7 +57,7 @@ def __init__(self, url='kafka://localhost:9092', channel='socketio',
                                             bootstrap_servers=self.kafka_urls)
 
     def _publish(self, data):
-        self.producer.send(self.channel, value=pickle.dumps(data))
+        self.producer.send(self.channel, value=self.encoder.dumps(data))
         self.producer.flush()
 
     def _kafka_listen(self):
@@ -64,4 +67,4 @@ def _kafka_listen(self):
     def _listen(self):
         for message in self._kafka_listen():
             if message.topic == self.channel:
-                yield pickle.loads(message.value)
+                yield message.value

src/socketio/kombu_manager.py

@@ -42,20 +42,24 @@ class KombuManager(PubSubManager):  # pragma: no cover
                           ``kombu.Queue()``.
     :param producer_options: additional keyword arguments to be passed to
                              ``kombu.Producer()``.
+    :param encoder: The encoder to use for publishing and decoding data,
+                    defaults to pickle.
     """
     name = 'kombu'
 
     def __init__(self, url='amqp://guest:guest@localhost:5672//',
                  channel='socketio', write_only=False, logger=None,
                  connection_options=None, exchange_options=None,
-                 queue_options=None, producer_options=None):
+                 queue_options=None, producer_options=None,
+                 encoder=pickle):
         if kombu is None:
             raise RuntimeError('Kombu package is not installed '
                                '(Run "pip install kombu" in your '
                                'virtualenv).')
         super(KombuManager, self).__init__(channel=channel,
                                            write_only=write_only,
-                                           logger=logger)
+                                           logger=logger,
+                                           encoder=encoder)
         self.url = url
         self.connection_options = connection_options or {}
         self.exchange_options = exchange_options or {}
@@ -103,7 +107,7 @@ def _publish(self, data):
         connection = self._connection()
         publish = connection.ensure(self.producer, self.producer.publish,
                                     errback=self.__error_callback)
-        publish(pickle.dumps(data))
+        publish(self.encoder.dumps(data))
 
     def _listen(self):
         reader_queue = self._queue()

src/socketio/pubsub_manager.py

@@ -23,12 +23,14 @@ class PubSubManager(BaseManager):
     """
     name = 'pubsub'
 
-    def __init__(self, channel='socketio', write_only=False, logger=None):
+    def __init__(self, channel='socketio', write_only=False, logger=None,
+                 encoder=None):
         super(PubSubManager, self).__init__()
         self.channel = channel
         self.write_only = write_only
         self.host_id = uuid.uuid4().hex
         self.logger = logger
+        self.encoder = encoder
 
     def initialize(self):
         super(PubSubManager, self).initialize()
@@ -151,7 +153,13 @@ def _thread(self):
             if isinstance(message, dict):
                 data = message
             else:
-                if isinstance(message, bytes):  # pragma: no cover
+                if self.encoder:
+                    try:
+                        data = self.encoder.loads(message)
+                    except:
+                        pass
+                if data is None and \
+                        isinstance(message, bytes):  # pragma: no cover
                     try:
                         data = pickle.loads(message)
                     except:

src/socketio/redis_manager.py

@@ -36,11 +36,14 @@ class RedisManager(PubSubManager):  # pragma: no cover
                        and receiving.
     :param redis_options: additional keyword arguments to be passed to
                           ``Redis.from_url()``.
+    :param encoder: The encoder to use for publishing and decoding data,
+                    defaults to pickle.
     """
     name = 'redis'
 
     def __init__(self, url='redis://localhost:6379/0', channel='socketio',
-                 write_only=False, logger=None, redis_options=None):
+                 write_only=False, logger=None, redis_options=None,
+                 encoder=pickle):
         if redis is None:
             raise RuntimeError('Redis package is not installed '
                                '(Run "pip install redis" in your '
@@ -50,7 +53,8 @@ def __init__(self, url='redis://localhost:6379/0', channel='socketio',
         self._redis_connect()
         super(RedisManager, self).__init__(channel=channel,
                                            write_only=write_only,
-                                           logger=logger)
+                                           logger=logger,
+                                           encoder=encoder)
 
     def initialize(self):
         super(RedisManager, self).initialize()
@@ -78,7 +82,8 @@ def _publish(self, data):
             try:
                 if not retry:
                     self._redis_connect()
-                return self.redis.publish(self.channel, pickle.dumps(data))
+                return self.redis.publish(self.channel,
+                                          self.encoder.dumps(data))
             except redis.exceptions.RedisError:
                 if retry:
                     logger.error('Cannot publish to redis... retrying')

src/socketio/zmq_manager.py

@@ -29,6 +29,8 @@ class ZmqManager(PubSubManager):  # pragma: no cover
     :param write_only: If set to ``True``, only initialize to emit events. The
                        default of ``False`` initializes the class for emitting
                        and receiving.
+    :param encoder: The encoder to use for publishing and decoding data,
+                    defaults to pickle.
 
     A zmq message broker must be running for the zmq_manager to work.
     you can write your own or adapt one from the following simple broker
@@ -50,7 +52,8 @@ class ZmqManager(PubSubManager):  # pragma: no cover
     def __init__(self, url='zmq+tcp://localhost:5555+5556',
                  channel='socketio',
                  write_only=False,
-                 logger=None):
+                 logger=None,
+                 encoder=pickle):
         if zmq is None:
             raise RuntimeError('zmq package is not installed '
                                '(Run "pip install pyzmq" in your '
@@ -77,17 +80,18 @@ def __init__(self, url='zmq+tcp://localhost:5555+5556',
         self.channel = channel
         super(ZmqManager, self).__init__(channel=channel,
                                          write_only=write_only,
-                                         logger=logger)
+                                         logger=logger,
+                                         encoder=encoder)
 
     def _publish(self, data):
-        pickled_data = pickle.dumps(
+        encoded_data = self.encoder.dumps(
             {
                 'type': 'message',
                 'channel': self.channel,
                 'data': data
             }
         )
-        return self.sink.send(pickled_data)
+        return self.sink.send(encoded_data)
 
     def zmq_listen(self):
         while True:
@@ -98,10 +102,7 @@ def zmq_listen(self):
     def _listen(self):
         for message in self.zmq_listen():
             if isinstance(message, bytes):
-                try:
-                    message = pickle.loads(message)
-                except Exception:
-                    pass
+                yield message
             if isinstance(message, dict) and \
                     message['type'] == 'message' and \
                     message['channel'] == self.channel and \

tests/common/test_pubsub_manager.py

@@ -1,5 +1,8 @@
 import functools
 import logging
+import pickle
+import json
+import marshal
 import unittest
 from unittest import mock
 
@@ -365,8 +368,6 @@ def test_background_thread(self):
         self.pm._handle_close_room = mock.MagicMock()
 
         def messages():
-            import pickle
-
             yield {'method': 'emit', 'value': 'foo'}
             yield {'missing': 'method'}
             yield '{"method": "callback", "value": "bar"}'
@@ -394,3 +395,46 @@ def messages():
         self.pm._handle_close_room.assert_called_once_with(
             {'method': 'close_room', 'value': 'baz'}
         )
+
+    def test_background_thread_with_encoder(self):
+        mock_server = mock.MagicMock()
+        pm = pubsub_manager.PubSubManager(encoder=marshal)
+        pm.set_server(mock_server)
+        pm._publish = mock.MagicMock()
+        pm._handle_emit = mock.MagicMock()
+        pm._handle_callback = mock.MagicMock()
+        pm._handle_disconnect = mock.MagicMock()
+        pm._handle_close_room = mock.MagicMock()
+
+        pm.initialize()
+
+        def messages():
+            yield {'method': 'emit', 'value': 'foo'}
+            yield marshal.dumps({'method': 'callback', 'value': 'bar'})
+            yield json.dumps(
+                    {'method': 'disconnect', 'sid': '123', 'namespace': '/foo'}
+            )
+            yield pickle.dumps({'method': 'close_room', 'value': 'baz'})
+            yield {'method': 'bogus'}
+            yield 'bad json'
+            yield b'bad encoding'
+
+        pm._listen = mock.MagicMock(side_effect=messages)
+
+        try:
+            pm._thread()
+        except StopIteration:
+            pass
+
+        pm._handle_emit.assert_called_once_with(
+            {'method': 'emit', 'value': 'foo'}
+        )
+        pm._handle_callback.assert_called_once_with(
+            {'method': 'callback', 'value': 'bar'}
+        )
+        pm._handle_disconnect.assert_called_once_with(
+            {'method': 'disconnect', 'sid': '123', 'namespace': '/foo'}
+        )
+        pm._handle_close_room.assert_called_once_with(
+            {'method': 'close_room', 'value': 'baz'}
+        )