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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.cluster;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.routing.RoutingNode;
import org.elasticsearch.cluster.routing.RoutingNodes;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.cluster.routing.UnassignedInfo;
import org.elasticsearch.cluster.routing.allocation.AllocationService;
import org.elasticsearch.cluster.routing.allocation.FailedRerouteAllocation;
import org.elasticsearch.cluster.routing.allocation.RoutingAllocation;
import org.elasticsearch.cluster.routing.allocation.StartedRerouteAllocation;
import org.elasticsearch.cluster.routing.allocation.allocator.BalancedShardsAllocator;
import org.elasticsearch.cluster.routing.allocation.allocator.ShardsAllocator;
import org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider;
import org.elasticsearch.cluster.routing.allocation.decider.AllocationDeciders;
import org.elasticsearch.cluster.routing.allocation.decider.Decision;
import org.elasticsearch.cluster.routing.allocation.decider.SameShardAllocationDecider;
import org.elasticsearch.common.settings.ClusterSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.LocalTransportAddress;
import org.elasticsearch.gateway.GatewayAllocator;
import org.elasticsearch.test.ESTestCase;
import org.elasticsearch.test.gateway.NoopGatewayAllocator;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import static java.util.Collections.emptyMap;
import static org.elasticsearch.cluster.routing.ShardRoutingState.INITIALIZING;
import static org.elasticsearch.common.util.CollectionUtils.arrayAsArrayList;
/**
*/
public abstract class ESAllocationTestCase extends ESTestCase {
private static final ClusterSettings EMPTY_CLUSTER_SETTINGS =
new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS);
public static MockAllocationService createAllocationService() {
return createAllocationService(Settings.Builder.EMPTY_SETTINGS);
}
public static MockAllocationService createAllocationService(Settings settings) {
return createAllocationService(settings, random());
}
public static MockAllocationService createAllocationService(Settings settings, Random random) {
return createAllocationService(settings, EMPTY_CLUSTER_SETTINGS, random);
}
public static MockAllocationService createAllocationService(Settings settings, ClusterSettings clusterSettings, Random random) {
return new MockAllocationService(settings,
randomAllocationDeciders(settings, clusterSettings, random),
NoopGatewayAllocator.INSTANCE, new BalancedShardsAllocator(settings), EmptyClusterInfoService.INSTANCE);
}
public static MockAllocationService createAllocationService(Settings settings, ClusterInfoService clusterInfoService) {
return new MockAllocationService(settings,
randomAllocationDeciders(settings, EMPTY_CLUSTER_SETTINGS, random()),
NoopGatewayAllocator.INSTANCE, new BalancedShardsAllocator(settings), clusterInfoService);
}
public static MockAllocationService createAllocationService(Settings settings, GatewayAllocator gatewayAllocator) {
return new MockAllocationService(settings,
randomAllocationDeciders(settings, EMPTY_CLUSTER_SETTINGS, random()),
gatewayAllocator, new BalancedShardsAllocator(settings), EmptyClusterInfoService.INSTANCE);
}
public static AllocationDeciders randomAllocationDeciders(Settings settings, ClusterSettings clusterSettings, Random random) {
List<AllocationDecider> deciders = new ArrayList<>(
ClusterModule.createAllocationDeciders(settings, clusterSettings, Collections.emptyList()));
Collections.shuffle(deciders, random);
return new AllocationDeciders(settings, deciders);
}
protected static Set<DiscoveryNode.Role> MASTER_DATA_ROLES =
Collections.unmodifiableSet(new HashSet<>(Arrays.asList(DiscoveryNode.Role.MASTER, DiscoveryNode.Role.DATA)));
protected static DiscoveryNode newNode(String nodeId) {
return newNode(nodeId, Version.CURRENT);
}
protected static DiscoveryNode newNode(String nodeName, String nodeId, Map<String, String> attributes) {
return new DiscoveryNode(nodeName, nodeId, LocalTransportAddress.buildUnique(), attributes, MASTER_DATA_ROLES, Version.CURRENT);
}
protected static DiscoveryNode newNode(String nodeId, Map<String, String> attributes) {
return new DiscoveryNode(nodeId, LocalTransportAddress.buildUnique(), attributes, MASTER_DATA_ROLES, Version.CURRENT);
}
protected static DiscoveryNode newNode(String nodeId, Set<DiscoveryNode.Role> roles) {
return new DiscoveryNode(nodeId, LocalTransportAddress.buildUnique(), emptyMap(), roles, Version.CURRENT);
}
protected static DiscoveryNode newNode(String nodeId, Version version) {
return new DiscoveryNode(nodeId, LocalTransportAddress.buildUnique(), emptyMap(), MASTER_DATA_ROLES, version);
}
protected static ClusterState startRandomInitializingShard(ClusterState clusterState, AllocationService strategy) {
List<ShardRouting> initializingShards = clusterState.getRoutingNodes().shardsWithState(INITIALIZING);
if (initializingShards.isEmpty()) {
return clusterState;
}
RoutingAllocation.Result routingResult = strategy.applyStartedShards(clusterState,
arrayAsArrayList(initializingShards.get(randomInt(initializingShards.size() - 1))));
return ClusterState.builder(clusterState).routingResult(routingResult).build();
}
protected static AllocationDeciders yesAllocationDeciders() {
return new AllocationDeciders(Settings.EMPTY, Arrays.asList(
new TestAllocateDecision(Decision.YES),
new SameShardAllocationDecider(Settings.EMPTY)));
}
protected static AllocationDeciders noAllocationDeciders() {
return new AllocationDeciders(Settings.EMPTY, Collections.singleton(new TestAllocateDecision(Decision.NO)));
}
protected static AllocationDeciders throttleAllocationDeciders() {
return new AllocationDeciders(Settings.EMPTY, Arrays.asList(
new TestAllocateDecision(Decision.THROTTLE),
new SameShardAllocationDecider(Settings.EMPTY)));
}
protected ClusterState applyStartedShardsUntilNoChange(ClusterState clusterState, AllocationService service) {
RoutingAllocation.Result routingResult;
do {
logger.debug("ClusterState: {}", clusterState.getRoutingNodes().prettyPrint());
routingResult = service.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
clusterState = ClusterState.builder(clusterState).routingResult(routingResult).build();
} while (routingResult.changed());
return clusterState;
}
public static class TestAllocateDecision extends AllocationDecider {
private final Decision decision;
public TestAllocateDecision(Decision decision) {
super(Settings.EMPTY);
this.decision = decision;
}
@Override
public Decision canAllocate(ShardRouting shardRouting, RoutingNode node, RoutingAllocation allocation) {
return decision;
}
@Override
public Decision canAllocate(ShardRouting shardRouting, RoutingAllocation allocation) {
return decision;
}
@Override
public Decision canAllocate(RoutingNode node, RoutingAllocation allocation) {
return decision;
}
}
/** A lock {@link AllocationService} allowing tests to override time */
protected static class MockAllocationService extends AllocationService {
private volatile long nanoTimeOverride = -1L;
public MockAllocationService(Settings settings, AllocationDeciders allocationDeciders, GatewayAllocator gatewayAllocator,
ShardsAllocator shardsAllocator, ClusterInfoService clusterInfoService) {
super(settings, allocationDeciders, gatewayAllocator, shardsAllocator, clusterInfoService);
}
public void setNanoTimeOverride(long nanoTime) {
this.nanoTimeOverride = nanoTime;
}
@Override
protected long currentNanoTime() {
return nanoTimeOverride == -1L ? super.currentNanoTime() : nanoTimeOverride;
}
}
/**
* Mocks behavior in ReplicaShardAllocator to remove delayed shards from list of unassigned shards so they don't get reassigned yet.
*/
protected static class DelayedShardsMockGatewayAllocator extends GatewayAllocator {
public DelayedShardsMockGatewayAllocator() {
super(Settings.EMPTY, null, null);
}
@Override
public void applyStartedShards(StartedRerouteAllocation allocation) {}
@Override
public void applyFailedShards(FailedRerouteAllocation allocation) {}
@Override
public void allocateUnassigned(RoutingAllocation allocation) {
final RoutingNodes.UnassignedShards.UnassignedIterator unassignedIterator = allocation.routingNodes().unassigned().iterator();
while (unassignedIterator.hasNext()) {
ShardRouting shard = unassignedIterator.next();
if (shard.primary() || shard.unassignedInfo().getReason() == UnassignedInfo.Reason.INDEX_CREATED) {
continue;
}
if (shard.unassignedInfo().isDelayed()) {
unassignedIterator.removeAndIgnore(UnassignedInfo.AllocationStatus.DELAYED_ALLOCATION, allocation.changes());
}
}
}
}
}
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