1 files changed, 54 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/plugins/PluginScannerThread.java b/java/com/google/gerrit/server/plugins/PluginScannerThread.java
new file mode 100644
index 0000000000..705e3c0c75
--- /dev/null
+++ b/java/com/google/gerrit/server/plugins/PluginScannerThread.java
@@ -0,0 +1,54 @@
+// Copyright (C) 2012 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.plugins;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+class PluginScannerThread extends Thread {
+  private final CountDownLatch done = new CountDownLatch(1);
+  private final PluginLoader loader;
+  private final long checkFrequencyMillis;
+
+  PluginScannerThread(PluginLoader loader, long checkFrequencyMillis) {
+    this.loader = loader;
+    this.checkFrequencyMillis = checkFrequencyMillis;
+    setDaemon(true);
+    setName("PluginScanner");
+  }
+
+  @Override
+  public void run() {
+    for (; ; ) {
+      try {
+        if (done.await(checkFrequencyMillis, TimeUnit.MILLISECONDS)) {
+          return;
+        }
+      } catch (InterruptedException e) {
+        // Ignored
+      }
+      loader.rescan();
+    }
+  }
+
+  void end() {
+    done.countDown();
+    try {
+      join();
+    } catch (InterruptedException e) {
+      // Ignored
+    }
+  }
+}