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Elasticsearch subproject :server
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.transport;
import com.google.common.base.Preconditions;
import com.google.common.collect.Maps;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.inject.AbstractModule;
import org.elasticsearch.common.io.stream.NamedWriteableRegistry;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.transport.local.LocalTransport;
import org.elasticsearch.transport.netty.NettyTransport;
import java.util.Map;
/**
*
*/
public class TransportModule extends AbstractModule {
public static final String TRANSPORT_TYPE_KEY = "transport.type";
public static final String TRANSPORT_SERVICE_TYPE_KEY = "transport.service.type";
public static final String LOCAL_TRANSPORT = "local";
public static final String NETTY_TRANSPORT = "netty";
private final ESLogger logger;
private final Settings settings;
private final Map> transportServices = Maps.newHashMap();
private final Map> transports = Maps.newHashMap();
private final NamedWriteableRegistry namedWriteableRegistry;
private Class configuredTransportService;
private Class configuredTransport;
private String configuredTransportServiceSource;
private String configuredTransportSource;
public TransportModule(Settings settings, NamedWriteableRegistry namedWriteableRegistry) {
this.settings = settings;
this.logger = Loggers.getLogger(getClass(), settings);
addTransport(LOCAL_TRANSPORT, LocalTransport.class);
addTransport(NETTY_TRANSPORT, NettyTransport.class);
this.namedWriteableRegistry = namedWriteableRegistry;
}
public void addTransportService(String name, Class clazz) {
Class oldClazz = transportServices.put(name, clazz);
if (oldClazz != null) {
throw new IllegalArgumentException("Cannot register TransportService [" + name + "] to " + clazz.getName() + ", already registered to " + oldClazz.getName());
}
}
public void addTransport(String name, Class clazz) {
Class oldClazz = transports.put(name, clazz);
if (oldClazz != null) {
throw new IllegalArgumentException("Cannot register Transport [" + name + "] to " + clazz.getName() + ", already registered to " + oldClazz.getName());
}
}
@Override
protected void configure() {
if (configuredTransportService != null) {
logger.info("Using [{}] as transport service, overridden by [{}]", configuredTransportService.getName(), configuredTransportServiceSource);
bind(TransportService.class).to(configuredTransportService).asEagerSingleton();
} else {
String typeName = settings.get(TRANSPORT_SERVICE_TYPE_KEY);
if (typeName == null) {
bind(TransportService.class).asEagerSingleton();
} else {
if (transportServices.containsKey(typeName) == false) {
throw new IllegalArgumentException("Unknown TransportService type [" + typeName + "], known types are: " + transportServices.keySet());
}
bind(TransportService.class).to(transportServices.get(typeName)).asEagerSingleton();
}
}
bind(NamedWriteableRegistry.class).toInstance(namedWriteableRegistry);
if (configuredTransport != null) {
logger.info("Using [{}] as transport, overridden by [{}]", configuredTransport.getName(), configuredTransportSource);
bind(Transport.class).to(configuredTransport).asEagerSingleton();
} else {
String defaultType = DiscoveryNode.localNode(settings) ? LOCAL_TRANSPORT : NETTY_TRANSPORT;
String typeName = settings.get(TRANSPORT_TYPE_KEY, defaultType);
Class clazz = transports.get(typeName);
if (clazz == null) {
throw new IllegalArgumentException("Unknown Transport [" + typeName + "]");
}
bind(Transport.class).to(clazz).asEagerSingleton();
}
}
public void setTransportService(Class transportService, String source) {
Preconditions.checkNotNull(transportService, "Configured transport service may not be null");
Preconditions.checkNotNull(source, "Plugin, that changes transport service may not be null");
this.configuredTransportService = transportService;
this.configuredTransportServiceSource = source;
}
public void setTransport(Class transport, String source) {
Preconditions.checkNotNull(transport, "Configured transport may not be null");
Preconditions.checkNotNull(source, "Plugin, that changes transport may not be null");
this.configuredTransport = transport;
this.configuredTransportSource = source;
}
}