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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.zen;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.common.transport.DummyTransportAddress;
import org.elasticsearch.discovery.zen.ping.ZenPing;
import org.elasticsearch.test.ESTestCase;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import static org.elasticsearch.discovery.zen.ZenDiscovery.shouldIgnoreOrRejectNewClusterState;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.equalTo;
/**
*/
public class ZenDiscoveryUnitTests extends ESTestCase {
public void testShouldIgnoreNewClusterState() {
ClusterName clusterName = new ClusterName("abc");
DiscoveryNodes.Builder currentNodes = DiscoveryNodes.builder();
currentNodes.masterNodeId("a").put(new DiscoveryNode("a", DummyTransportAddress.INSTANCE, Version.CURRENT));
DiscoveryNodes.Builder newNodes = DiscoveryNodes.builder();
newNodes.masterNodeId("a").put(new DiscoveryNode("a", DummyTransportAddress.INSTANCE, Version.CURRENT));
ClusterState.Builder currentState = ClusterState.builder(clusterName);
currentState.nodes(currentNodes);
ClusterState.Builder newState = ClusterState.builder(clusterName);
newState.nodes(newNodes);
currentState.version(2);
newState.version(1);
assertTrue("should ignore, because new state's version is lower to current state's version", shouldIgnoreOrRejectNewClusterState(logger, currentState.build(), newState.build()));
currentState.version(1);
newState.version(1);
assertFalse("should not ignore, because new state's version is equal to current state's version", shouldIgnoreOrRejectNewClusterState(logger, currentState.build(), newState.build()));
currentState.version(1);
newState.version(2);
assertFalse("should not ignore, because new state's version is higher to current state's version", shouldIgnoreOrRejectNewClusterState(logger, currentState.build(), newState.build()));
currentNodes = DiscoveryNodes.builder();
currentNodes.masterNodeId("b").put(new DiscoveryNode("b", DummyTransportAddress.INSTANCE, Version.CURRENT));
;
// version isn't taken into account, so randomize it to ensure this.
if (randomBoolean()) {
currentState.version(2);
newState.version(1);
} else {
currentState.version(1);
newState.version(2);
}
currentState.nodes(currentNodes);
try {
shouldIgnoreOrRejectNewClusterState(logger, currentState.build(), newState.build());
fail("should ignore, because current state's master is not equal to new state's master");
} catch (IllegalStateException e) {
assertThat(e.getMessage(), containsString("cluster state from a different master than the current one, rejecting"));
}
currentNodes = DiscoveryNodes.builder();
currentNodes.masterNodeId(null);
currentState.nodes(currentNodes);
// version isn't taken into account, so randomize it to ensure this.
if (randomBoolean()) {
currentState.version(2);
newState.version(1);
} else {
currentState.version(1);
newState.version(2);
}
assertFalse("should not ignore, because current state doesn't have a master", shouldIgnoreOrRejectNewClusterState(logger, currentState.build(), newState.build()));
}
public void testFilterNonMasterPingResponse() {
ArrayList<ZenPing.PingResponse> responses = new ArrayList<>();
ArrayList<DiscoveryNode> masterNodes = new ArrayList<>();
ArrayList<DiscoveryNode> allNodes = new ArrayList<>();
for (int i = randomIntBetween(10, 20); i >= 0; i--) {
Map<String, String> attrs = new HashMap<>();
for (String attr : randomSubsetOf(
Arrays.asList(DiscoveryNode.INGEST_ATTR, DiscoveryNode.DATA_ATTR, DiscoveryNode.MASTER_ATTR))) {
attrs.put(attr, randomBoolean() + "");
}
DiscoveryNode node = new DiscoveryNode("node_" + i, "id_" + i, DummyTransportAddress.INSTANCE, attrs, Version.CURRENT);
responses.add(new ZenPing.PingResponse(node, randomBoolean() ? null : node, new ClusterName("test"), randomBoolean()));
allNodes.add(node);
if (node.isMasterNode()) {
masterNodes.add(node);
}
}
boolean ignore = randomBoolean();
List<ZenPing.PingResponse> filtered = ZenDiscovery.filterPingResponses(
responses.toArray(new ZenPing.PingResponse[responses.size()]), ignore, logger);
final List<DiscoveryNode> filteredNodes = filtered.stream().map(ZenPing.PingResponse::node).collect(Collectors.toList());
if (ignore) {
assertThat(filteredNodes, equalTo(masterNodes));
} else {
assertThat(filteredNodes, equalTo(allNodes));
}
}
}
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