| ;; 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. |
| |
| (ns backtype.storm.process-simulator |
| (:use [backtype.storm log util])) |
| |
| (def pid-counter (mk-counter)) |
| |
| (def process-map (atom {})) |
| |
| (def kill-lock (Object.)) |
| |
| (defn register-process [pid shutdownable] |
| (swap! process-map assoc pid shutdownable)) |
| |
| (defn process-handle |
| [pid] |
| (@process-map pid)) |
| |
| (defn all-processes |
| [] |
| (vals @process-map)) |
| |
| (defn kill-process |
| "Uses `locking` in case cluster shuts down while supervisor is |
| killing a task" |
| [pid] |
| (locking kill-lock |
| (log-message "Killing process " pid) |
| (let [shutdownable (process-handle pid)] |
| (swap! process-map dissoc pid) |
| (when shutdownable |
| (.shutdown shutdownable))))) |
| |
| (defn kill-all-processes |
| [] |
| (doseq [pid (keys @process-map)] |
| (kill-process pid))) |