Added configuration modules and closeable wrappers for FixedThreadPool, FlexibleThrea...

[controller.git] / opendaylight / config / threadpool-config-impl / src / main / java / org / opendaylight / controller / config / threadpool / util / FlexibleThreadPoolWrapper.java

diff --git a/opendaylight/config/threadpool-config-impl/src/main/java/org/opendaylight/controller/config/threadpool/util/FlexibleThreadPoolWrapper.java b/opendaylight/config/threadpool-config-impl/src/main/java/org/opendaylight/controller/config/threadpool/util/FlexibleThreadPoolWrapper.java
new file mode 100644 (file)
index 0000000..3dfa6e2
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+++ b/opendaylight/config/threadpool-config-impl/src/main/java/org/opendaylight/controller/config/threadpool/util/FlexibleThreadPoolWrapper.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.controller.config.threadpool.util;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.SynchronousQueue;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+
+import org.opendaylight.controller.config.threadpool.ThreadPool;
+
+/**
+ * Implementation of {@link ThreadPool} using flexible number of threads wraps
+ * {@link ExecutorService}.
+ */
+public class FlexibleThreadPoolWrapper implements ThreadPool, Closeable {
+    private final ThreadPoolExecutor executor;
+
+    public FlexibleThreadPoolWrapper(int minThreadCount, int maxThreadCount, long keepAlive, TimeUnit timeUnit,
+            ThreadFactory threadFactory) {
+
+        executor = new ThreadPoolExecutor(minThreadCount, maxThreadCount, keepAlive, timeUnit,
+                new SynchronousQueue<Runnable>(), threadFactory);
+        executor.prestartAllCoreThreads();
+    }
+
+    @Override
+    public ExecutorService getExecutor() {
+        return Executors.unconfigurableExecutorService(executor);
+    }
+
+    public int getMinThreadCount() {
+        return executor.getCorePoolSize();
+    }
+
+    public void setMinThreadCount(int minThreadCount) {
+        executor.setCorePoolSize(minThreadCount);
+    }
+
+    @Override
+    public int getMaxThreadCount() {
+        return executor.getMaximumPoolSize();
+    }
+
+    public void setMaxThreadCount(int maxThreadCount) {
+        executor.setMaximumPoolSize(maxThreadCount);
+    }
+
+    public long getKeepAliveMillis() {
+        return executor.getKeepAliveTime(TimeUnit.MILLISECONDS);
+    }
+
+    public void setKeepAliveMillis(long keepAliveMillis) {
+        executor.setKeepAliveTime(keepAliveMillis, TimeUnit.MILLISECONDS);
+    }
+
+    public void setThreadFactory(ThreadFactory threadFactory) {
+        executor.setThreadFactory(threadFactory);
+    }
+
+    public void prestartAllCoreThreads() {
+        executor.prestartAllCoreThreads();
+    }
+
+    @Override
+    public void close() throws IOException {
+        executor.shutdown();
+    }
+
+}