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Add CcrRestoreSourceService to track sessions (#36578)
This commit is related to #36127. It adds a CcrRestoreSourceService to track Engine.IndexCommitRef need for in-process file restores. When a follower starts restoring a shard through the CcrRepository it opens a session with the leader through the PutCcrRestoreSessionAction. The leader responds to the request by telling the follower what files it needs to fetch for a restore. This is not yet implemented. Once, the restore is complete, the follower closes the session with the DeleteCcrRestoreSessionAction action.
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121 changes: 121 additions & 0 deletions
121
...in/java/org/elasticsearch/xpack/ccr/action/repositories/ClearCcrRestoreSessionAction.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License; | ||
| * you may not use this file except in compliance with the Elastic License. | ||
| */ | ||
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| package org.elasticsearch.xpack.ccr.action.repositories; | ||
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| import org.elasticsearch.action.Action; | ||
| import org.elasticsearch.action.FailedNodeException; | ||
| import org.elasticsearch.action.support.ActionFilters; | ||
| import org.elasticsearch.action.support.nodes.BaseNodeResponse; | ||
| import org.elasticsearch.action.support.nodes.BaseNodesResponse; | ||
| import org.elasticsearch.action.support.nodes.TransportNodesAction; | ||
| import org.elasticsearch.cluster.ClusterName; | ||
| import org.elasticsearch.cluster.node.DiscoveryNode; | ||
| import org.elasticsearch.cluster.service.ClusterService; | ||
| import org.elasticsearch.common.inject.Inject; | ||
| import org.elasticsearch.common.io.stream.StreamInput; | ||
| import org.elasticsearch.common.io.stream.StreamOutput; | ||
| import org.elasticsearch.threadpool.ThreadPool; | ||
| import org.elasticsearch.transport.TransportService; | ||
| import org.elasticsearch.xpack.ccr.repository.CcrRestoreSourceService; | ||
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| import java.io.IOException; | ||
| import java.util.List; | ||
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| public class ClearCcrRestoreSessionAction extends Action<ClearCcrRestoreSessionAction.ClearCcrRestoreSessionResponse> { | ||
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| public static final ClearCcrRestoreSessionAction INSTANCE = new ClearCcrRestoreSessionAction(); | ||
| private static final String NAME = "internal:admin/ccr/restore/session/clear"; | ||
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| private ClearCcrRestoreSessionAction() { | ||
| super(NAME); | ||
| } | ||
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| @Override | ||
| public ClearCcrRestoreSessionResponse newResponse() { | ||
| return new ClearCcrRestoreSessionResponse(); | ||
| } | ||
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| public static class TransportDeleteCcrRestoreSessionAction extends TransportNodesAction<ClearCcrRestoreSessionRequest, | ||
| ClearCcrRestoreSessionResponse, ClearCcrRestoreSessionRequest.Request, Response> { | ||
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| private final CcrRestoreSourceService ccrRestoreService; | ||
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| @Inject | ||
| public TransportDeleteCcrRestoreSessionAction(ThreadPool threadPool, ClusterService clusterService, ActionFilters actionFilters, | ||
| TransportService transportService, CcrRestoreSourceService ccrRestoreService) { | ||
| super(NAME, threadPool, clusterService, transportService, actionFilters, ClearCcrRestoreSessionRequest::new, | ||
| ClearCcrRestoreSessionRequest.Request::new, ThreadPool.Names.GENERIC, Response.class); | ||
| this.ccrRestoreService = ccrRestoreService; | ||
| } | ||
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| @Override | ||
| protected ClearCcrRestoreSessionResponse newResponse(ClearCcrRestoreSessionRequest request, List<Response> responses, | ||
| List<FailedNodeException> failures) { | ||
| return new ClearCcrRestoreSessionResponse(clusterService.getClusterName(), responses, failures); | ||
| } | ||
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| @Override | ||
| protected ClearCcrRestoreSessionRequest.Request newNodeRequest(String nodeId, ClearCcrRestoreSessionRequest request) { | ||
| return request.getRequest(); | ||
| } | ||
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| @Override | ||
| protected Response newNodeResponse() { | ||
| return new Response(); | ||
| } | ||
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| @Override | ||
| protected Response nodeOperation(ClearCcrRestoreSessionRequest.Request request) { | ||
| ccrRestoreService.closeSession(request.getSessionUUID()); | ||
| return new Response(clusterService.localNode()); | ||
| } | ||
| } | ||
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| public static class Response extends BaseNodeResponse { | ||
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| private Response() { | ||
| } | ||
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| private Response(StreamInput in) throws IOException { | ||
| readFrom(in); | ||
| } | ||
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| private Response(DiscoveryNode node) { | ||
| super(node); | ||
| } | ||
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| @Override | ||
| public void writeTo(StreamOutput out) throws IOException { | ||
| super.writeTo(out); | ||
| } | ||
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| @Override | ||
| public void readFrom(StreamInput in) throws IOException { | ||
| super.readFrom(in); | ||
| } | ||
| } | ||
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| public static class ClearCcrRestoreSessionResponse extends BaseNodesResponse<Response> { | ||
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| ClearCcrRestoreSessionResponse() { | ||
| } | ||
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| ClearCcrRestoreSessionResponse(ClusterName clusterName, List<Response> chunkResponses, List<FailedNodeException> failures) { | ||
| super(clusterName, chunkResponses, failures); | ||
| } | ||
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| @Override | ||
| protected List<Response> readNodesFrom(StreamInput in) throws IOException { | ||
| return in.readList(Response::new); | ||
| } | ||
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| @Override | ||
| protected void writeNodesTo(StreamOutput out, List<Response> nodes) throws IOException { | ||
| out.writeList(nodes); | ||
| } | ||
| } | ||
| } |
73 changes: 73 additions & 0 deletions
73
...n/java/org/elasticsearch/xpack/ccr/action/repositories/ClearCcrRestoreSessionRequest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License; | ||
| * you may not use this file except in compliance with the Elastic License. | ||
| */ | ||
|
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| package org.elasticsearch.xpack.ccr.action.repositories; | ||
|
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| import org.elasticsearch.action.support.nodes.BaseNodeRequest; | ||
| import org.elasticsearch.action.support.nodes.BaseNodesRequest; | ||
| import org.elasticsearch.common.io.stream.StreamInput; | ||
| import org.elasticsearch.common.io.stream.StreamOutput; | ||
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| import java.io.IOException; | ||
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| public class ClearCcrRestoreSessionRequest extends BaseNodesRequest<ClearCcrRestoreSessionRequest> { | ||
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| private Request request; | ||
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| ClearCcrRestoreSessionRequest() { | ||
| } | ||
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| public ClearCcrRestoreSessionRequest(String nodeId, Request request) { | ||
| super(nodeId); | ||
| this.request = request; | ||
| } | ||
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| @Override | ||
| public void readFrom(StreamInput streamInput) throws IOException { | ||
| super.readFrom(streamInput); | ||
| request = new Request(); | ||
| request.readFrom(streamInput); | ||
| } | ||
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| @Override | ||
| public void writeTo(StreamOutput streamOutput) throws IOException { | ||
| super.writeTo(streamOutput); | ||
| request.writeTo(streamOutput); | ||
| } | ||
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| public Request getRequest() { | ||
| return request; | ||
| } | ||
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| public static class Request extends BaseNodeRequest { | ||
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| private String sessionUUID; | ||
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| Request() { | ||
| } | ||
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| public Request(String nodeId, String sessionUUID) { | ||
| super(nodeId); | ||
| this.sessionUUID = sessionUUID; | ||
| } | ||
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| @Override | ||
| public void readFrom(StreamInput in) throws IOException { | ||
| super.readFrom(in); | ||
| sessionUUID = in.readString(); | ||
| } | ||
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| @Override | ||
| public void writeTo(StreamOutput out) throws IOException { | ||
| super.writeTo(out); | ||
| out.writeString(sessionUUID); | ||
| } | ||
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| public String getSessionUUID() { | ||
| return sessionUUID; | ||
| } | ||
| } | ||
| } |
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