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fix: concurrency safety in ProcessotTrackerPool

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This commit is contained in:
tjq 2020-12-05 10:36:33 +08:00
parent b4f92bbc25
commit 9db9d0d01f
1 changed files with 3 additions and 8 deletions
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7
powerjob-worker/src/main/java/com/github/kfcfans/powerjob/worker/core/tracker/processor/ProcessorTrackerPool.java
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@ -25,18 +25,13 @@ public class ProcessorTrackerPool {
/** /**
* 获取 ProcessorTracker，如果不存在则创建 * 获取 ProcessorTracker，如果不存在则创建
*/ */
public static ProcessorTracker getProcessorTracker(Long instanceId, String address, Supplier<ProcessorTracker> creator) { public static synchronized ProcessorTracker getProcessorTracker(Long instanceId, String address, Supplier<ProcessorTracker> creator) {
ProcessorTracker processorTracker = processorTrackerPool.getOrDefault(instanceId, Collections.emptyMap()).get(address); ProcessorTracker processorTracker = processorTrackerPool.getOrDefault(instanceId, Collections.emptyMap()).get(address);
if (processorTracker == null) {
synchronized (ProcessorTrackerPool.class) {
processorTracker = processorTrackerPool.getOrDefault(instanceId, Collections.emptyMap()).get(address);
if (processorTracker == null) { if (processorTracker == null) {
processorTracker = creator.get(); processorTracker = creator.get();
processorTrackerPool.computeIfAbsent(instanceId, ignore -> Maps.newHashMap()).put(address, processorTracker); processorTrackerPool.computeIfAbsent(instanceId, ignore -> Maps.newHashMap()).put(address, processorTracker);
} }
}
}
return processorTracker; return processorTracker;
} }