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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.bulk;

import org.elasticsearch.Version;
import org.elasticsearch.action.ActionRequest;
import org.elasticsearch.action.IndicesRequest;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Streamable;

import java.io.IOException;

/**
 *
 */
public class BulkItemRequest implements Streamable {

    private int id;
    private ActionRequest request;
    private volatile BulkItemResponse primaryResponse;
    private volatile boolean ignoreOnReplica;

    BulkItemRequest() {

    }

    public BulkItemRequest(int id, ActionRequest request) {
        assert request instanceof IndicesRequest;
        this.id = id;
        this.request = request;
    }

    public int id() {
        return id;
    }

    public ActionRequest request() {
        return request;
    }

    public String index() {
        IndicesRequest indicesRequest = (IndicesRequest) request;
        assert indicesRequest.indices().length == 1;
        return indicesRequest.indices()[0];
    }

    BulkItemResponse getPrimaryResponse() {
        return primaryResponse;
    }

    void setPrimaryResponse(BulkItemResponse primaryResponse) {
        this.primaryResponse = primaryResponse;
    }

    /**
     * Marks this request to be ignored and *not* execute on a replica.
     */
    void setIgnoreOnReplica() {
        this.ignoreOnReplica = true;
    }

    boolean isIgnoreOnReplica() {
        return ignoreOnReplica;
    }

    public static BulkItemRequest readBulkItem(StreamInput in) throws IOException {
        BulkItemRequest item = new BulkItemRequest();
        item.readFrom(in);
        return item;
    }

    @Override
    public void readFrom(StreamInput in) throws IOException {
        id = in.readVInt();
        byte type = in.readByte();
        if (type == 0) {
            request = new IndexRequest();
        } else if (type == 1) {
            request = new DeleteRequest();
        } else if (type == 2) {
            request = new UpdateRequest();
        }
        request.readFrom(in);
        if (in.readBoolean()) {
            primaryResponse = BulkItemResponse.readBulkItem(in);
        }
        ignoreOnReplica = in.readBoolean();
    }

    @Override
    public void writeTo(StreamOutput out) throws IOException {
        out.writeVInt(id);
        if (request instanceof IndexRequest) {
            out.writeByte((byte) 0);
        } else if (request instanceof DeleteRequest) {
            out.writeByte((byte) 1);
        } else if (request instanceof UpdateRequest) {
            out.writeByte((byte) 2);
        }
        request.writeTo(out);
        out.writeOptionalStreamable(primaryResponse);
        out.writeBoolean(ignoreOnReplica);
    }
}