/* | |
* 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.karaf.diagnostic.common; | |
import java.io.File; | |
import java.io.FileInputStream; | |
import java.io.IOException; | |
import java.io.InputStream; | |
import java.io.OutputStream; | |
import java.util.Dictionary; | |
import java.util.Enumeration; | |
import org.apache.karaf.diagnostic.core.DumpDestination; | |
import org.apache.karaf.diagnostic.core.DumpProvider; | |
import org.osgi.framework.BundleContext; | |
import org.osgi.framework.ServiceReference; | |
import org.osgi.service.cm.Configuration; | |
import org.osgi.service.cm.ConfigurationAdmin; | |
/** | |
* Dump provider which copies log files from data/log directory to | |
* destination. | |
*/ | |
public class LogDumpProvider implements DumpProvider { | |
private BundleContext bundleContext; | |
public void setBundleContext(BundleContext bundleContext) { | |
this.bundleContext = bundleContext; | |
} | |
/** | |
* Attach log entries from directory. | |
*/ | |
public void createDump(DumpDestination destination) throws Exception { | |
// get the ConfigAdmin service | |
ServiceReference ref = bundleContext.getServiceReference(ConfigurationAdmin.class.getName()); | |
if (ref == null) { | |
return; | |
} | |
// get the PAX Logging configuration | |
ConfigurationAdmin configurationAdmin = (ConfigurationAdmin) bundleContext.getService(ref); | |
try { | |
Configuration configuration = configurationAdmin.getConfiguration("org.ops4j.pax.logging"); | |
// get the ".file" Pax Logging Properties | |
Dictionary dictionary = configuration.getProperties(); | |
for (Enumeration e = dictionary.keys(); e.hasMoreElements(); ) { | |
String property = (String) e.nextElement(); | |
if (property.endsWith(".file")) { | |
// it's a file appender, get the log file location | |
String location = (String) dictionary.get(property); | |
File file = new File(location); | |
if (file.exists()) { | |
FileInputStream inputStream = new FileInputStream(file); | |
OutputStream outputStream = destination.add("log/" + file.getName()); | |
copy(inputStream, outputStream); | |
} | |
} | |
} | |
} catch (Exception e) { | |
throw e; | |
} finally { | |
bundleContext.ungetService(ref); | |
} | |
} | |
/** | |
* Rewrites data from input stream to output stream. This code is very common | |
* but we would avoid additional dependencies in diagnostic stuff. | |
* | |
* @param inputStream Source stream. | |
* @param outputStream Destination stream. | |
* @throws IOException When IO operation fails. | |
*/ | |
private void copy(InputStream inputStream, OutputStream outputStream) throws IOException { | |
byte[] buffer = new byte[4096]; | |
int n = 0; | |
while (-1 != (n = inputStream.read(buffer))) { | |
outputStream.write(buffer, 0, n); | |
} | |
} | |
} |