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Diffstat (limited to 'java/com/google/gerrit/server/RequestCleanup.java')
-rw-r--r-- | java/com/google/gerrit/server/RequestCleanup.java | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/RequestCleanup.java b/java/com/google/gerrit/server/RequestCleanup.java new file mode 100644 index 0000000000..7ed9287c80 --- /dev/null +++ b/java/com/google/gerrit/server/RequestCleanup.java @@ -0,0 +1,55 @@ +// Copyright (C) 2009 The Android Open Source Project +// +// Licensed 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. + +package com.google.gerrit.server; + +import com.google.common.flogger.FluentLogger; +import com.google.inject.servlet.RequestScoped; +import java.util.Iterator; +import java.util.LinkedList; +import java.util.List; + +/** Registers cleanup activities to be completed when a scope ends. */ +@RequestScoped +public class RequestCleanup implements Runnable { + private static final FluentLogger logger = FluentLogger.forEnclosingClass(); + + private final List<Runnable> cleanup = new LinkedList<>(); + private boolean ran; + + /** Register a task to be completed after the request ends. */ + public void add(Runnable task) { + synchronized (cleanup) { + if (ran) { + throw new IllegalStateException("Request has already been cleaned up"); + } + cleanup.add(task); + } + } + + @Override + public void run() { + synchronized (cleanup) { + ran = true; + for (Iterator<Runnable> i = cleanup.iterator(); i.hasNext(); ) { + try { + i.next().run(); + } catch (Throwable err) { + logger.atSevere().withCause(err).log("Failed to execute per-request cleanup"); + } + i.remove(); + } + } + } +} |