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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.action.search;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.ExceptionsHelper;
import org.elasticsearch.action.ShardOperationFailedException;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.search.SearchException;
import org.elasticsearch.search.SearchShardTarget;
import java.io.IOException;
import static org.elasticsearch.search.SearchShardTarget.readSearchShardTarget;
/**
* Represents a failure to search on a specific shard.
*/
public class ShardSearchFailure implements ShardOperationFailedException {
public static final ShardSearchFailure[] EMPTY_ARRAY = new ShardSearchFailure[0];
private SearchShardTarget shardTarget;
private String reason;
private RestStatus status;
private Throwable cause;
private ShardSearchFailure() {
}
public ShardSearchFailure(Throwable t) {
this(t, null);
}
public ShardSearchFailure(Throwable t, @Nullable SearchShardTarget shardTarget) {
Throwable actual = ExceptionsHelper.unwrapCause(t);
if (actual != null && actual instanceof SearchException) {
this.shardTarget = ((SearchException) actual).shard();
} else if (shardTarget != null) {
this.shardTarget = shardTarget;
}
status = ExceptionsHelper.status(actual);
this.reason = ExceptionsHelper.detailedMessage(t);
this.cause = actual;
}
public ShardSearchFailure(String reason, SearchShardTarget shardTarget) {
this(reason, shardTarget, RestStatus.INTERNAL_SERVER_ERROR);
}
public ShardSearchFailure(String reason, SearchShardTarget shardTarget, RestStatus status) {
this.shardTarget = shardTarget;
this.reason = reason;
this.status = status;
}
/**
* The search shard target the failure occurred on.
*/
@Nullable
public SearchShardTarget shard() {
return this.shardTarget;
}
@Override
public RestStatus status() {
return this.status;
}
/**
* The index the search failed on.
*/
@Override
public String index() {
if (shardTarget != null) {
return shardTarget.index();
}
return null;
}
/**
* The shard id the search failed on.
*/
@Override
public int shardId() {
if (shardTarget != null) {
return shardTarget.shardId();
}
return -1;
}
/**
* The reason of the failure.
*/
@Override
public String reason() {
return this.reason;
}
@Override
public String toString() {
return "shard [" + (shardTarget == null ? "_na" : shardTarget) + "], reason [" + reason + "], cause [" + (cause == null ? "_na" : ExceptionsHelper.stackTrace(cause)) + "]";
}
public static ShardSearchFailure readShardSearchFailure(StreamInput in) throws IOException {
ShardSearchFailure shardSearchFailure = new ShardSearchFailure();
shardSearchFailure.readFrom(in);
return shardSearchFailure;
}
@Override
public void readFrom(StreamInput in) throws IOException {
if (in.readBoolean()) {
shardTarget = readSearchShardTarget(in);
}
reason = in.readString();
status = RestStatus.readFrom(in);
cause = in.readThrowable();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
if (shardTarget == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
shardTarget.writeTo(out);
}
out.writeString(reason);
RestStatus.writeTo(out, status);
out.writeThrowable(cause);
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.field("shard", shardId());
builder.field("index", index());
if (shardTarget != null) {
builder.field("node", shardTarget.nodeId());
}
if (cause != null) {
builder.field("reason");
builder.startObject();
ElasticsearchException.toXContent(builder, params, cause);
builder.endObject();
}
return builder;
}
@Override
public Throwable getCause() {
return cause;
}
}
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