| /*! |
| * 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. |
| */ |
| |
| /** |
| * This file contains source code of run_task_on_celery_executor.png image. |
| * |
| * If you want regenerate this image, you should follow instructions here: |
| * https://plantuml.com/starting |
| */ |
| |
| @startuml |
| autonumber |
| |
| box Scheduler |
| participant SchedulerProcess order 10 |
| endbox |
| database QueueBroker order 20 |
| database ResultBackend order 30 |
| box Worker |
| participant WorkerProcess order 40 |
| participant WorkerChildProcess order 50 |
| participant LocalTaskJobProcess order 60 |
| participant RawTaskProcess order 70 |
| endbox |
| |
| activate SchedulerProcess |
| activate WorkerChildProcess |
| |
| SchedulerProcess->>QueueBroker: Send task |
| activate QueueBroker |
| SchedulerProcess->ResultBackend: Pool celery \ntask state |
| deactivate SchedulerProcess |
| WorkerChildProcess->QueueBroker: Pool task |
| QueueBroker->WorkerChildProcess: Send task |
| deactivate QueueBroker |
| activate WorkerChildProcess |
| create LocalTaskJobProcess |
| WorkerChildProcess->LocalTaskJobProcess: Start process |
| deactivate |
| create RawTaskProcess |
| activate LocalTaskJobProcess |
| LocalTaskJobProcess->RawTaskProcess: Start process |
| deactivate LocalTaskJobProcess |
| activate RawTaskProcess |
| RawTaskProcess->RawTaskProcess: Execute user code |
| RawTaskProcess-->LocalTaskJobProcess: Finish process |
| destroy RawTaskProcess |
| activate LocalTaskJobProcess |
| LocalTaskJobProcess-->WorkerChildProcess: Finish process |
| destroy LocalTaskJobProcess |
| activate WorkerChildProcess |
| WorkerChildProcess-->WorkerProcess: Report task result |
| deactivate WorkerChildProcess |
| activate WorkerProcess |
| WorkerProcess-->ResultBackend: Save Celery task state |
| deactivate WorkerProcess |
| activate ResultBackend |
| ResultBackend-->SchedulerProcess: Send celery task state |
| deactivate ResultBackend |
| |
| @enduml |
