/**
* 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.cassandra.avro;
import java.io.IOException;
import java.net.InetAddress;
import java.util.UUID;
import org.apache.avro.ipc.HttpServer;
import org.apache.avro.specific.SpecificResponder;
import org.apache.cassandra.config.ConfigurationException;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.db.CompactionManager;
import org.apache.cassandra.db.SystemTable;
import org.apache.cassandra.db.Table;
import org.apache.cassandra.db.commitlog.CommitLog;
import org.apache.cassandra.db.migration.Migration;
import org.apache.cassandra.service.MigrationManager;
import org.apache.cassandra.service.StorageService;
import org.apache.cassandra.utils.FBUtilities;
import org.apache.cassandra.utils.Mx4jTool;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The Avro analogue to org.apache.cassandra.service.CassandraDaemon.
*
*/
public class CassandraDaemon extends org.apache.cassandra.service.AbstractCassandraDaemon {
private static Logger logger = LoggerFactory.getLogger(CassandraDaemon.class);
private HttpServer server;
private InetAddress listenAddr;
private int listenPort;
protected void setup() throws IOException
{
listenPort = DatabaseDescriptor.getRpcPort();
listenAddr = DatabaseDescriptor.getRpcAddress();
/*
* If ThriftAddress was left completely unconfigured, then assume
* the same default as ListenAddress
*/
if (listenAddr == null)
listenAddr = FBUtilities.getLocalAddress();
Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler()
{
public void uncaughtException(Thread t, Throwable e)
{
logger.error("Fatal exception in thread " + t, e);
if (e instanceof OutOfMemoryError)
{
System.exit(100);
}
}
});
// check the system table for mismatched partitioner.
try
{
SystemTable.checkHealth();
}
catch (ConfigurationException e)
{
logger.error("Fatal exception during initialization", e);
System.exit(100);
}
try
{
DatabaseDescriptor.loadSchemas();
}
catch (IOException e)
{
logger.error("Fatal exception during initialization", e);
System.exit(100);
}
// initialize keyspaces
for (String table : DatabaseDescriptor.getTables())
{
if (logger.isDebugEnabled())
logger.debug("opening keyspace " + table);
Table.open(table);
}
// replay the log if necessary and check for compaction candidates
CommitLog.recover();
CompactionManager.instance.checkAllColumnFamilies();
// check to see if CL.recovery modified the lastMigrationId. if it did, we need to re apply migrations. this isn't
// the same as merely reloading the schema (which wouldn't perform file deletion after a DROP). The solution
// is to read those migrations from disk and apply them.
UUID currentMigration = DatabaseDescriptor.getDefsVersion();
UUID lastMigration = Migration.getLastMigrationId();
if ((lastMigration != null) && (lastMigration.timestamp() > currentMigration.timestamp()))
{
MigrationManager.applyMigrations(currentMigration, lastMigration);
}
// start server internals
StorageService.instance.initServer();
}
/** hook for JSVC */
public void start() throws IOException
{
if (logger.isDebugEnabled())
logger.debug(String.format("Binding avro service to %s:%s", listenAddr, listenPort));
SpecificResponder responder = new SpecificResponder(Cassandra.class, new CassandraServer());
logger.info("Listening for avro clients...");
Mx4jTool.maybeLoad();
// FIXME: This isn't actually binding to listenAddr (it should).
server = new HttpServer(responder, listenPort);
}
/** hook for JSVC */
public void stop()
{
logger.info("Cassandra shutting down...");
server.close();
}
public static void main(String[] args) {
new CassandraDaemon().activate();
}
}