Celery任务无法通过channel_layer.send调用Channels消费者

问题描述

我一直在为一个相当简单的应用程序设置一个websocket。我编写了一个JsonWebsocketConsumer以及一些celery任务，以便执行一些运行时间更长的任务（数据库访问）。一切正常，没有错误，但是我的消费者从未被打过电话。有什么想法吗？

consumers.py

class NetworkCompConsumer(JsonWebsocketConsumer):
    def connect(self):
        self.accept()

    def disconnect(self,close_code):
        pass

    def receive_json(self,content):
        include = content['include']

        # Reduce Dimensions of Inputs to 2,Just in Case User uploads 3D
        # Geojson
        wkb_w = WKBWriter()
        wkb_w.outdim = 2

        include = GEOSGeometry(json.dumps(include))
        include = GEOSGeometry(wkb_w.write_hex(include))

        print("firing tasks")
        genPolySize.delay(include.json,None,self.channel_name)
        genBuildingCount.delay(include.json,self.channel_name)
        # This gets sent
        self.send_json({
            "hello world": "Hi!!!"
        })

    def polygon_area(self,event):
        print("poly area consumer called!!")
        # This does not get sent
        self.send_json(
            {"area": event['value']}
        )

    def building_count(self,event):
        print("building count consumer called!!")
        # This does not get sent
        self.send_json(
            {"buildingCount": event['value']}
        )

tasks.py

def sync_send(channelName,consumer,value):
    channel_layer = get_channel_layer()
    print(channel_layer)
    async_to_sync(channel_layer.send)(
        channelName,{
            "type": consumer,"value": value,}
    )


@shared_task
def genBuildingCount(include,exclude,channelName):
    query_skeleton = building_count_skeleton
    query_skeleton = getQueryTemplate(query_skeleton,exclude is not None,False)
    with connections['gis_data'].cursor() as cursor:
        cursor.execute(
            query_skeleton,[include,exclude] if exclude is not None else [include])
        results = cursor.fetchone()
        buildingCount = results[0]
        sync_send(channelName,"building.count",buildingCount)
        print("successfully completed genBuildingCount")


@shared_task
def genPolySize(include,channelName):
    query_skeleton = poly_size_skeleton
    if exclude is not None:
        query_skeleton = poly_size_skeleton_exclude
    with connections['gis_data'].cursor() as cursor:
        query_arguments = [
            include,exclude
        ] if exclude is not None else [include]
        cursor.execute(query_skeleton,query_arguments)
        results = cursor.fetchone()
        polygonArea = squaredMetersToMiles(results[0])
        sync_send(channelName,"polygon.area",polygonArea)
        print("successfully completed genPolySize")

日志

django-app_1  | WebSocket HANDSHAKING /ws/network-comparison/ [172.18.0.1:60460]
django-app_1  | WebSocket CONNECT /ws/network-comparison/ [172.18.0.1:60460]
celery_1      | [2020-11-10 18:00:31,916: INFO/MainProcess] Received task: NetworkComparison.tasks.genPolySize[7867638b-76db-4385-b6f6-451970b2f7f3]  
celery_1      | [2020-11-10 18:00:31,921: INFO/MainProcess] Received task: NetworkComparison.tasks.genBuildingCount[875826c0-4c73-4597-9a61-5b6240a4bcfa]  
celery_1      | [2020-11-10 18:00:31,949: WARNING/ForkPoolWorker-3] <channels.layers.InMemoryChannelLayer object at 0x7f0a002c59a0>
celery_1      | [2020-11-10 18:00:31,952: WARNING/ForkPoolWorker-3] successfully completed genPolySize
celery_1      | [2020-11-10 18:00:31,955: INFO/ForkPoolWorker-3] Task NetworkComparison.tasks.genPolySize[7867638b-76db-4385-b6f6-451970b2f7f3] succeeded in 0.03706242493353784s: None
celery_1      | [2020-11-10 18:00:32,050: WARNING/ForkPoolWorker-5] <channels.layers.InMemoryChannelLayer object at 0x7f0a002c9400>
celery_1      | [2020-11-10 18:00:32,053: WARNING/ForkPoolWorker-5] successfully completed genBuildingCount
celery_1      | [2020-11-10 18:00:32,056: INFO/ForkPoolWorker-5] Task NetworkComparison.tasks.genBuildingCount[875826c0-4c73-4597-9a61-5b6240a4bcfa] succeeded in 0.13415803597308695s: None

芹菜任务已完成，但似乎从未调用过polygon_area和building_count。我应该担心两个打印通道层位于不同的存储位置吗？

谢谢！

解决方法

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django django-channels python