/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * 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.
 */

/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.indices.recovery;

import org.opensearch.core.common.io.stream.StreamInput;
import org.opensearch.core.common.io.stream.StreamOutput;
import org.opensearch.index.seqno.ReplicationTracker;
import org.opensearch.core.index.shard.ShardId;
import org.opensearch.transport.TransportRequest;

import java.io.IOException;

/**
 * The request object to handoff the primary context to the relocation target.
 *
 * @opensearch.internal
 */
class RecoveryHandoffPrimaryContextRequest extends TransportRequest {

    private long recoveryId;
    private ShardId shardId;
    private ReplicationTracker.PrimaryContext primaryContext;

    /**
     * Initialize an empty request (used to serialize into when reading from a stream).
     */
    RecoveryHandoffPrimaryContextRequest(StreamInput in) throws IOException {
        super(in);
        recoveryId = in.readLong();
        shardId = new ShardId(in);
        primaryContext = new ReplicationTracker.PrimaryContext(in);
    }

    /**
     * Initialize a request for the specified relocation.
     *
     * @param recoveryId     the recovery ID of the relocation
     * @param shardId        the shard ID of the relocation
     * @param primaryContext the primary context
     */
    RecoveryHandoffPrimaryContextRequest(
        final long recoveryId,
        final ShardId shardId,
        final ReplicationTracker.PrimaryContext primaryContext
    ) {
        this.recoveryId = recoveryId;
        this.shardId = shardId;
        this.primaryContext = primaryContext;
    }

    long recoveryId() {
        return this.recoveryId;
    }

    ShardId shardId() {
        return shardId;
    }

    ReplicationTracker.PrimaryContext primaryContext() {
        return primaryContext;
    }

    @Override
    public void writeTo(final StreamOutput out) throws IOException {
        super.writeTo(out);
        out.writeLong(recoveryId);
        shardId.writeTo(out);
        primaryContext.writeTo(out);
    }

    @Override
    public String toString() {
        return "RecoveryHandoffPrimaryContextRequest{"
            + "recoveryId="
            + recoveryId
            + ", shardId="
            + shardId
            + ", primaryContext="
            + primaryContext
            + '}';
    }
}