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* the Apache License, Version 2.0 (the "License"); you may
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* 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,
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package org.elasticsearch.client.transport;
import org.elasticsearch.action.admin.cluster.state.ClusterStateRequest;
import org.elasticsearch.action.admin.cluster.state.ClusterStateResponse;
import org.elasticsearch.action.support.PlainActionFuture;
import org.elasticsearch.client.Requests;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.env.Environment;
import org.elasticsearch.test.ESIntegTestCase;
import org.elasticsearch.test.ESIntegTestCase.ClusterScope;
import org.elasticsearch.test.ESIntegTestCase.Scope;
import org.elasticsearch.transport.MockTransportClient;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import static org.hamcrest.Matchers.greaterThanOrEqualTo;
@ClusterScope(scope = Scope.TEST, numClientNodes = 0, supportsDedicatedMasters = false)
public class TransportClientRetryIT extends ESIntegTestCase {
public void testRetry() throws IOException, ExecutionException, InterruptedException {
Iterable<TransportService> instances = internalCluster().getInstances(TransportService.class);
TransportAddress[] addresses = new TransportAddress[internalCluster().size()];
int i = 0;
for (TransportService instance : instances) {
addresses[i++] = instance.boundAddress().publishAddress();
}
Settings.Builder builder = Settings.builder().put("client.transport.nodes_sampler_interval", "1s")
.put("node.name", "transport_client_retry_test")
.put(ClusterName.CLUSTER_NAME_SETTING.getKey(), internalCluster().getClusterName())
.put(Environment.PATH_HOME_SETTING.getKey(), createTempDir());
try (TransportClient client = new MockTransportClient(builder.build())) {
client.addTransportAddresses(addresses);
assertEquals(client.connectedNodes().size(), internalCluster().size());
int size = cluster().size();
//kill all nodes one by one, leaving a single master/data node at the end of the loop
for (int j = 1; j < size; j++) {
internalCluster().stopRandomNode(input -> true);
ClusterStateRequest clusterStateRequest = Requests.clusterStateRequest().local(true);
ClusterState clusterState;
//use both variants of execute method: with and without listener
if (randomBoolean()) {
clusterState = client.admin().cluster().state(clusterStateRequest).get().getState();
} else {
PlainActionFuture<ClusterStateResponse> future = PlainActionFuture.newFuture();
client.admin().cluster().state(clusterStateRequest, future);
clusterState = future.get().getState();
}
assertThat(clusterState.nodes().getSize(), greaterThanOrEqualTo(size - j));
assertThat(client.connectedNodes().size(), greaterThanOrEqualTo(size - j));
}
}
}
}