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SingleNodeDiscoveryIT.java
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SingleNodeDiscoveryIT.java
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/*
* 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.discovery.single;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.LogEvent;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.coordination.JoinHelper;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.node.Node;
import org.elasticsearch.test.ESIntegTestCase;
import org.elasticsearch.test.InternalTestCluster;
import org.elasticsearch.test.MockHttpTransport;
import org.elasticsearch.test.MockLogAppender;
import org.elasticsearch.test.NodeConfigurationSource;
import org.elasticsearch.transport.RemoteTransportException;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.function.Function;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.not;
@ESIntegTestCase.ClusterScope(
scope = ESIntegTestCase.Scope.TEST,
numDataNodes = 1,
numClientNodes = 0,
supportsDedicatedMasters = false,
autoManageMasterNodes = false)
public class SingleNodeDiscoveryIT extends ESIntegTestCase {
@Override
protected Settings nodeSettings(int nodeOrdinal) {
return Settings
.builder()
.put(super.nodeSettings(nodeOrdinal))
.put("discovery.type", "single-node")
.put("transport.port", "0")
.build();
}
public void testSingleNodesDoNotDiscoverEachOther() throws IOException, InterruptedException {
final TransportService service = internalCluster().getInstance(TransportService.class);
final int port = service.boundAddress().publishAddress().getPort();
final NodeConfigurationSource configurationSource = new NodeConfigurationSource() {
@Override
public Settings nodeSettings(int nodeOrdinal) {
return Settings
.builder()
.put("discovery.type", "single-node")
.put("transport.type", getTestTransportType())
/*
* We align the port ranges of the two as then with zen discovery these two
* nodes would find each other.
*/
.put("transport.port", port + "-" + (port + 5 - 1))
.build();
}
@Override
public Path nodeConfigPath(int nodeOrdinal) {
return null;
}
};
try (InternalTestCluster other =
new InternalTestCluster(
randomLong(),
createTempDir(),
false,
false,
1,
1,
internalCluster().getClusterName(),
configurationSource,
0,
"other",
Arrays.asList(getTestTransportPlugin(), MockHttpTransport.TestPlugin.class),
Function.identity())) {
other.beforeTest(random());
final ClusterState first = internalCluster().getInstance(ClusterService.class).state();
final ClusterState second = other.getInstance(ClusterService.class).state();
assertThat(first.nodes().getSize(), equalTo(1));
assertThat(second.nodes().getSize(), equalTo(1));
assertThat(
first.nodes().getMasterNodeId(),
not(equalTo(second.nodes().getMasterNodeId())));
assertThat(
first.metaData().clusterUUID(),
not(equalTo(second.metaData().clusterUUID())));
}
}
public void testCannotJoinNodeWithSingleNodeDiscovery() throws Exception {
MockLogAppender mockAppender = new MockLogAppender();
mockAppender.start();
mockAppender.addExpectation(
new MockLogAppender.SeenEventExpectation(
"test",
JoinHelper.class.getCanonicalName(),
Level.INFO,
"failed to join") {
@Override
public boolean innerMatch(final LogEvent event) {
return event.getThrown() != null
&& event.getThrown().getClass() == RemoteTransportException.class
&& event.getThrown().getCause() != null
&& event.getThrown().getCause().getClass() == IllegalStateException.class
&& event.getThrown().getCause().getMessage().contains(
"cannot join node with [discovery.type] set to [single-node]");
}
});
final TransportService service = internalCluster().getInstance(TransportService.class);
final int port = service.boundAddress().publishAddress().getPort();
final NodeConfigurationSource configurationSource = new NodeConfigurationSource() {
@Override
public Settings nodeSettings(int nodeOrdinal) {
return Settings
.builder()
.put("discovery.type", "zen")
.put("transport.type", getTestTransportType())
.put(Node.INITIAL_STATE_TIMEOUT_SETTING.getKey(), "0s")
/*
* We align the port ranges of the two as then with zen discovery these two
* nodes would find each other.
*/
.put("transport.port", port + "-" + (port + 5 - 1))
.build();
}
@Override
public Path nodeConfigPath(int nodeOrdinal) {
return null;
}
};
try (InternalTestCluster other =
new InternalTestCluster(
randomLong(),
createTempDir(),
false,
false,
1,
1,
internalCluster().getClusterName(),
configurationSource,
0,
"other",
Arrays.asList(getTestTransportPlugin(), MockHttpTransport.TestPlugin.class),
Function.identity())) {
Logger clusterLogger = LogManager.getLogger(JoinHelper.class);
Loggers.addAppender(clusterLogger, mockAppender);
try {
other.beforeTest(random());
final ClusterState first = internalCluster().getInstance(ClusterService.class).state();
assertThat(first.nodes().getSize(), equalTo(1));
assertBusy(() -> mockAppender.assertAllExpectationsMatched());
} finally {
Loggers.removeAppender(clusterLogger, mockAppender);
mockAppender.stop();
}
}
}
public void testStatePersistence() throws Exception {
createIndex("test");
internalCluster().fullRestart();
assertTrue(client().admin().indices().prepareExists("test").get().isExists());
}
}