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HawtioPlugin.java
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HawtioPlugin.java
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/*
* Copyright 2012 Red Hat, Inc.
*
* Red Hat 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 io.hawt.web.plugin;
import java.lang.management.ManagementFactory;
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Hawtio plugin
*/
public class HawtioPlugin implements HawtioPluginMBean {
private static final Logger LOG = LoggerFactory.getLogger(HawtioPlugin.class);
private String url;
private String scope;
private String module;
private String remoteEntryFileName;
private Boolean bustRemoteEntryCache;
private String pluginEntry;
private ObjectName objectName = null;
private MBeanServer mBeanServer = null;
public HawtioPlugin() {
}
public void init() {
try {
if (objectName == null) {
objectName = getObjectName();
}
if (mBeanServer == null) {
mBeanServer = ManagementFactory.getPlatformMBeanServer();
}
if (mBeanServer.isRegistered(objectName)) {
// Update of existing plugin
LOG.info("Unregistering existing plugin: {}", objectName);
mBeanServer.unregisterMBean(objectName);
}
LOG.debug("Registering plugin: {}", objectName);
mBeanServer.registerMBean(this, objectName);
} catch (Throwable t) {
LOG.error("Failed to register plugin:", t);
}
}
public void destroy() {
try {
if (mBeanServer != null) {
LOG.debug("Unregistering plugin: {}", objectName);
mBeanServer.unregisterMBean(objectName);
}
} catch (Throwable t) {
LOG.error("Failed to register plugin:", t);
}
}
public HawtioPlugin url(String url) {
this.url = url;
return this;
}
public HawtioPlugin scope(String scope) {
this.scope = scope;
return this;
}
public HawtioPlugin module(String module) {
this.module = module;
return this;
}
public HawtioPlugin remoteEntryFileName(String remoteEntryFileName) {
this.remoteEntryFileName = remoteEntryFileName;
return this;
}
public HawtioPlugin bustRemoteEntryCache(Boolean bustRemoteEntryCache) {
this.bustRemoteEntryCache = bustRemoteEntryCache;
return this;
}
public HawtioPlugin pluginEntry(String pluginEntry) {
this.pluginEntry = pluginEntry;
return this;
}
@Override
public String getUrl() {
return this.url;
}
@Override
public String getScope() {
return this.scope;
}
@Override
public String getModule() {
return this.module;
}
@Override
public String getRemoteEntryFileName() {
return this.remoteEntryFileName;
}
@Override
public Boolean getBustRemoteEntryCache() {
return this.bustRemoteEntryCache;
}
@Override
public String getPluginEntry() {
return this.pluginEntry;
}
protected ObjectName getObjectName() throws MalformedObjectNameException {
return new ObjectName("hawtio:type=plugin,name=" + getScope());
}
}