[GitHub] [skywalking-python] kezhenxu94 commented on a change in pull request #125: Python celery plugin

[GitBox <gi...@apache.org>]

kezhenxu94 commented on a change in pull request #125:
URL: https://github.com/apache/skywalking-python/pull/125#discussion_r656290342



##########
File path: skywalking/plugins/sw_celery.py
##########
@@ -0,0 +1,114 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from skywalking import Layer, Component, config
+from skywalking.trace import tags
+from skywalking.trace.carrier import Carrier
+from skywalking.trace.context import get_context
+from skywalking.trace.tags import Tag
+
+
+def install():
+    from urllib.parse import urlparse
+    from celery import Celery
+
+    def send_task(self, name, args=None, kwargs=None, **options):
+        # NOTE: Lines commented out below left for documentation purposes if sometime in the future exchange / queue
+        # names are wanted. Currently these do not match between producer and consumer so would need some work.
+
+        broker_url = self.conf['broker_url']
+        # exchange = options['exchange']
+        # queue = options['routing_key']
+        # op = 'celery/{}/{}/{}'.format(exchange or '', queue or '', name)
+        op = 'celery/' + name
+
+        if broker_url:
+            url = urlparse(broker_url)
+            peer = '{}:{}'.format(url.hostname, url.port)
+        else:
+            peer = '???'

Review comment:
       Is this the final state?

##########
File path: skywalking/agent/__init__.py
##########
@@ -65,14 +76,40 @@ def __init():
         __protocol = KafkaProtocol()
 
     plugins.install()
+    __init_threading()
 
 
 def __fini():
     __protocol.report(__queue, False)
     __queue.join()
+    __finished.set()
+
+
+def __fork_before():
+    if config.protocol != 'http':
+        logger.warning('fork() not currently supported with %s protocol' % config.protocol)

Review comment:
       Is it possible to make gRPC work in fork? Like I said in DM, recreate a brand new gRPC channel in forked process?




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