/*
* 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 org.elasticsearch.Version;
import org.elasticsearch.common.io.stream.NamedWriteableRegistry;
import org.elasticsearch.common.io.stream.Streamable;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.concurrent.ThreadContext;
import org.elasticsearch.plugins.NetworkPlugin;
import org.elasticsearch.plugins.Plugin;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.test.ESIntegTestCase;
import org.elasticsearch.test.VersionUtils;
import org.elasticsearch.test.hamcrest.ElasticsearchAssertions;
import java.util.Collections;
import java.util.List;
import java.util.Random;
/**
* A transport interceptor that applies {@link ElasticsearchAssertions#assertVersionSerializable(Streamable)}
* to all requests and response objects send across the wire
*/
public final class AssertingTransportInterceptor implements TransportInterceptor {
private final Random random;
private final NamedWriteableRegistry namedWriteableRegistry;
public static final class TestPlugin extends Plugin implements NetworkPlugin {
private final Settings settings;
public TestPlugin(Settings settings) {
this.settings = settings;
}
@Override
public List<TransportInterceptor> getTransportInterceptors(NamedWriteableRegistry namedWriteableRegistry,
ThreadContext threadContext) {
return Collections.singletonList(new AssertingTransportInterceptor(settings, namedWriteableRegistry));
}
}
public AssertingTransportInterceptor(Settings settings, NamedWriteableRegistry namedWriteableRegistry) {
final long seed = ESIntegTestCase.INDEX_TEST_SEED_SETTING.get(settings);
random = new Random(seed);
this.namedWriteableRegistry = namedWriteableRegistry;
}
@Override
public <T extends TransportRequest> TransportRequestHandler<T> interceptHandler(String action, String executor,
boolean forceExecution,
TransportRequestHandler<T> actualHandler) {
return new TransportRequestHandler<T>() {
@Override
public void messageReceived(T request, TransportChannel channel, Task task) throws Exception {
assertVersionSerializable(request);
actualHandler.messageReceived(request, channel, task);
}
@Override
public void messageReceived(T request, TransportChannel channel) throws Exception {
assertVersionSerializable(request);
actualHandler.messageReceived(request, channel);
}
};
}
private void assertVersionSerializable(Streamable streamable) {
Version version = VersionUtils.randomVersionBetween(random, Version.CURRENT.minimumCompatibilityVersion(), Version.CURRENT);
ElasticsearchAssertions.assertVersionSerializable(version, streamable, namedWriteableRegistry);
}
@Override
public AsyncSender interceptSender(final AsyncSender sender) {
return new AsyncSender() {
@Override
public <T extends TransportResponse> void sendRequest(Transport.Connection connection, String action, TransportRequest request,
TransportRequestOptions options,
final TransportResponseHandler<T> handler) {
assertVersionSerializable(request);
sender.sendRequest(connection, action, request, options, new TransportResponseHandler<T>() {
@Override
public T newInstance() {
return handler.newInstance();
}
@Override
public void handleResponse(T response) {
assertVersionSerializable(response);
handler.handleResponse(response);
}
@Override
public void handleException(TransportException exp) {
handler.handleException(exp);
}
@Override
public String executor() {
return handler.executor();
}
});
}
};
}
}