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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.logserver.handlers.archive;
import java.util.logging.Logger;
import com.yahoo.logserver.Server;
import com.yahoo.plugin.Config;
import com.yahoo.plugin.Plugin;
public class ArchiverPlugin implements Plugin {
/**
* Default log archive dir (relative to current directory
* at startup).
*/
private static final String DEFAULT_DIR = "logarchive";
/**
* Default max file size for archived log files.
*/
private static final String DEFAULT_MAXFILESIZE = "20971520";
private static final String DEFAULT_COMPRESSION = "gzip";
private final Server server = Server.getInstance();
private static final Logger log = Logger.getLogger(ArchiverPlugin.class.getName());
private ArchiverHandler archiver;
/**
* @return the name of this plugin
*/
public String getPluginName() {
return "logarchive";
}
/**
* Initialize the archiver plugin
* <p>
* Config keys used:
* <p>
* maxfilesize
* dir The root of the logarchive, make sure this does
* <b>not</b> end with a '/' character.
*/
public void initPlugin(Config config) {
if (archiver != null) {
log.finer("ArchivePlugin doubly initialized");
throw new IllegalStateException("plugin already initialized: "
+ getPluginName());
}
// Possible to disable logarchive for testing
String rootDir = config.get("dir", DEFAULT_DIR);
int maxFileSize = config.getInt("maxfilesize", DEFAULT_MAXFILESIZE);
String threadName = config.get("thread", getPluginName());
String zip = config.get("compression", DEFAULT_COMPRESSION);
// register log handler and flusher
archiver = new ArchiverHandler(rootDir, maxFileSize, zip);
server.registerLogHandler(archiver, threadName);
server.registerFlusher(archiver);
}
/**
* Shut down the archiver plugin.
*/
public void shutdownPlugin() {
if (archiver == null) {
log.finer("ArchiverPlugin shutdown before initialize");
throw new IllegalStateException("plugin not initialized: "
+ getPluginName());
}
server.unregisterLogHandler(archiver);
server.unregisterFlusher(archiver);
archiver.close();
archiver = null;
}
}
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