diff options
Diffstat (limited to 'qpid/java/broker-plugins/experimental/shutdown/src/main/java')
4 files changed, 247 insertions, 0 deletions
diff --git a/qpid/java/broker-plugins/experimental/shutdown/src/main/java/org/apache/qpid/shutdown/Activator.java b/qpid/java/broker-plugins/experimental/shutdown/src/main/java/org/apache/qpid/shutdown/Activator.java new file mode 100644 index 0000000000..ad5e7707b6 --- /dev/null +++ b/qpid/java/broker-plugins/experimental/shutdown/src/main/java/org/apache/qpid/shutdown/Activator.java @@ -0,0 +1,71 @@ +/* + * 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. + * + */ +package org.apache.qpid.shutdown; + +import java.lang.management.ManagementFactory; + +import javax.management.InstanceNotFoundException; +import javax.management.MBeanServer; +import javax.management.ObjectName; + +import org.apache.log4j.Logger; +import org.osgi.framework.BundleActivator; +import org.osgi.framework.BundleContext; + +public class Activator implements BundleActivator +{ + private static final Logger _logger = Logger.getLogger(Activator.class); + + private static final String SHUTDOWN_MBEAN_NAME = "org.apache.qpid:type=ShutdownMBean"; + + /** @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext) */ + public void start(BundleContext ctx) throws Exception { + Shutdown shutdown = new Shutdown(); + if (ctx != null) + { + ctx.registerService(ShutdownMBean.class.getName(), shutdown, null); + } + + // MBean registration + MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); + ObjectName name = new ObjectName(SHUTDOWN_MBEAN_NAME); + mbs.registerMBean(shutdown, name); + + _logger.info("Shutdown plugin MBean registered"); + } + + /** @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext) */ + public void stop(BundleContext ctx) throws Exception + { + // Unregister MBean + MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); + ObjectName name = new ObjectName(SHUTDOWN_MBEAN_NAME); + try + { + mbs.unregisterMBean(name); + } + catch (InstanceNotFoundException e) + { + //ignore + } + + _logger.info("Shutdown plugin MBean unregistered"); + } +} diff --git a/qpid/java/broker-plugins/experimental/shutdown/src/main/java/org/apache/qpid/shutdown/Shutdown.java b/qpid/java/broker-plugins/experimental/shutdown/src/main/java/org/apache/qpid/shutdown/Shutdown.java new file mode 100644 index 0000000000..9a6f85fe9c --- /dev/null +++ b/qpid/java/broker-plugins/experimental/shutdown/src/main/java/org/apache/qpid/shutdown/Shutdown.java @@ -0,0 +1,104 @@ +/* + * 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. + * + */ +package org.apache.qpid.shutdown; + +import java.text.DateFormat; +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.Date; +import java.util.concurrent.ScheduledExecutorService; +import java.util.concurrent.ScheduledThreadPoolExecutor; +import java.util.concurrent.TimeUnit; + +import org.apache.log4j.Logger; + +/** + * Implementation of the JMX broker shutdown plugin. + */ +public class Shutdown implements ShutdownMBean +{ + private static final Logger _logger = Logger.getLogger(Shutdown.class); + + private static final String FORMAT = "yyyyy/MM/dd hh:mm:ss"; + private static final int THREAD_COUNT = 1; + private static final ScheduledExecutorService EXECUTOR = new ScheduledThreadPoolExecutor(THREAD_COUNT); + + private final Runnable _shutdown = new SystemExiter(); + + /** @see ShutdownMBean#shutdown() */ + public void shutdown() + { + _logger.info("Shutting down at user's request"); + shutdownBroker(0); + } + + /** @see ShutdownMBean#shutdown(long) */ + public void shutdown(long delay) + { + _logger.info("Scheduled broker shutdown after " + delay + "ms"); + shutdownBroker(delay); + } + + /** @see ShutdownMBean#shutdownAt(String) */ + public void shutdownAt(String when) + { + Date date; + DateFormat df = new SimpleDateFormat(FORMAT); + try + { + date = df.parse(when); + } + catch (ParseException e) + { + _logger.error("Invalid date \"" + when + "\": expecting " + FORMAT, e); + return; + } + _logger.info("Scheduled broker shutdown at " + when); + long now = System.currentTimeMillis(); + long time = date.getTime(); + if (time > now) + { + shutdownBroker(time - now); + } + else + { + shutdownBroker(0); + } + } + + /** + * Submits the {@link SystemExiter} job to shutdown the broker. + */ + private void shutdownBroker(long delay) + { + EXECUTOR.schedule(_shutdown, delay, TimeUnit.MILLISECONDS); + } + + /** + * Shutting down the system in another thread to avoid JMX exceptions being thrown. + */ + class SystemExiter implements Runnable + { + public void run() + { + System.exit(0); + } + } +} diff --git a/qpid/java/broker-plugins/experimental/shutdown/src/main/java/org/apache/qpid/shutdown/ShutdownMBean.java b/qpid/java/broker-plugins/experimental/shutdown/src/main/java/org/apache/qpid/shutdown/ShutdownMBean.java new file mode 100644 index 0000000000..6294f869e9 --- /dev/null +++ b/qpid/java/broker-plugins/experimental/shutdown/src/main/java/org/apache/qpid/shutdown/ShutdownMBean.java @@ -0,0 +1,47 @@ +/* + * 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. + * + */ +package org.apache.qpid.shutdown; + +/** + * Shutdown plugin JMX MBean interface. + * + * Shuts the Qpid broker down via JMX. + */ +public interface ShutdownMBean +{ + /** + * Broker will be shut down immediately. + */ + public void shutdown(); + + /** + * Broker will be shutdown after the specified delay + * + * @param delay the number of ms to wait + */ + public void shutdown(long delay); + + /** + * Broker will be shutdown at the specified date and time. + * + * @param when the date and time to shutdown + */ + public void shutdownAt(String when); +} diff --git a/qpid/java/broker-plugins/experimental/shutdown/src/main/java/shutdown.bnd b/qpid/java/broker-plugins/experimental/shutdown/src/main/java/shutdown.bnd new file mode 100755 index 0000000000..6e005f5bdb --- /dev/null +++ b/qpid/java/broker-plugins/experimental/shutdown/src/main/java/shutdown.bnd @@ -0,0 +1,25 @@ +# +# 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. +# + +ver: 0.9.0 + +Bundle-SymbolicName: qpid-shutdown-plugin +Bundle-Version: ${ver} +Export-Package: *;version=${ver} +Bundle-RequiredExecutionEnvironment: J2SE-1.5 |