Package org.elasticsearch.test.gateway

Class TestGatewayAllocator

java.lang.Object

org.elasticsearch.gateway.GatewayAllocator

org.elasticsearch.test.gateway.TestGatewayAllocator

All Implemented Interfaces:

ExistingShardsAllocator

public class TestGatewayAllocator
extends GatewayAllocator

A gateway allocator implementation that keeps an in memory list of started shard allocation that are used as replies to the, normally async, fetch data requests. The in memory list is adapted when shards are started and failed. Nodes leaving and joining the cluster do not change the list of shards the class tracks but rather serves as a filter to what is returned by fetch data. Concretely - fetch data will only return shards that were started on nodes that are currently part of the cluster. For now only primary shard related data is fetched. Replica request always get an empty response. This class is useful to use in unit tests that require the functionality of GatewayAllocator but do not have all the infrastructure required to use it.

Nested Class Summary

Nested classes/interfaces inherited from interface org.elasticsearch.cluster.routing.allocation.ExistingShardsAllocator

ExistingShardsAllocator.UnassignedAllocationHandler

Field Summary

Fields inherited from class org.elasticsearch.gateway.GatewayAllocator

ALLOCATOR_NAME

Fields inherited from interface org.elasticsearch.cluster.routing.allocation.ExistingShardsAllocator

EXISTING_SHARDS_ALLOCATOR_SETTING

Constructor Summary

Constructors

Constructor	Description
TestGatewayAllocator()

Method Summary

Modifier and Type	Method	Description
void	addKnownAllocation(ShardRouting shard)	manually add a specific shard to the allocations the gateway keeps track of
void	afterPrimariesBeforeReplicas(RoutingAllocation allocation)
void	allocateUnassigned(ShardRouting shardRouting, RoutingAllocation allocation, ExistingShardsAllocator.UnassignedAllocationHandler unassignedAllocationHandler)
void	applyFailedShards(List<FailedShard> failedShards, RoutingAllocation allocation)
void	applyStartedShards(List<ShardRouting> startedShards, RoutingAllocation allocation)
void	beforeAllocation(RoutingAllocation allocation)
AllocateUnassignedDecision	explainUnassignedShardAllocation(ShardRouting unassignedShard, RoutingAllocation routingAllocation)

Methods inherited from class org.elasticsearch.gateway.GatewayAllocator

cleanCaches, getNumberOfInFlightFetches, innerAllocatedUnassigned

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TestGatewayAllocator

public TestGatewayAllocator()

Method Details

applyStartedShards

public void applyStartedShards(List<ShardRouting> startedShards,
 RoutingAllocation allocation)

Specified by:

applyStartedShards in interface ExistingShardsAllocator

Overrides:

applyStartedShards in class GatewayAllocator

applyFailedShards

public void applyFailedShards(List<FailedShard> failedShards,
 RoutingAllocation allocation)

Specified by:

applyFailedShards in interface ExistingShardsAllocator

Overrides:

applyFailedShards in class GatewayAllocator

beforeAllocation

public void beforeAllocation(RoutingAllocation allocation)

Specified by:

beforeAllocation in interface ExistingShardsAllocator

Overrides:

beforeAllocation in class GatewayAllocator

afterPrimariesBeforeReplicas

public void afterPrimariesBeforeReplicas(RoutingAllocation allocation)

Specified by:

afterPrimariesBeforeReplicas in interface ExistingShardsAllocator

Overrides:

afterPrimariesBeforeReplicas in class GatewayAllocator

allocateUnassigned

public void allocateUnassigned(ShardRouting shardRouting,
 RoutingAllocation allocation,
 ExistingShardsAllocator.UnassignedAllocationHandler unassignedAllocationHandler)

Specified by:

allocateUnassigned in interface ExistingShardsAllocator

Overrides:

allocateUnassigned in class GatewayAllocator

explainUnassignedShardAllocation

public AllocateUnassignedDecision explainUnassignedShardAllocation(ShardRouting unassignedShard,
 RoutingAllocation routingAllocation)

Specified by:

explainUnassignedShardAllocation in interface ExistingShardsAllocator

Overrides:

explainUnassignedShardAllocation in class GatewayAllocator

addKnownAllocation

public void addKnownAllocation(ShardRouting shard)

manually add a specific shard to the allocations the gateway keeps track of