clients/src/main/java/org/apache/kafka/common/requests/UpdateMetadataResponse.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE
 * file distributed with this work for additional information regarding copyright ownership. The ASF 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.apache.kafka.common.requests;

import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.ProtoUtils;
import org.apache.kafka.common.protocol.types.Schema;
import org.apache.kafka.common.protocol.types.Struct;

import java.nio.ByteBuffer;

public class UpdateMetadataResponse extends AbstractRequestResponse {

    private static final Schema CURRENT_SCHEMA = ProtoUtils.currentResponseSchema(ApiKeys.UPDATE_METADATA_KEY.id);

    private static final String ERROR_CODE_KEY_NAME = "error_code";

    /**
     * Possible error code:
     *
     * STALE_CONTROLLER_EPOCH (11)
     */
    private final short errorCode;

    public UpdateMetadataResponse(short errorCode) {
        super(new Struct(CURRENT_SCHEMA));
        struct.set(ERROR_CODE_KEY_NAME, errorCode);
        this.errorCode = errorCode;
    }

    public UpdateMetadataResponse(Struct struct) {
        super(struct);
        errorCode = struct.getShort(ERROR_CODE_KEY_NAME);
    }

    public short errorCode() {
        return errorCode;
    }

    public static UpdateMetadataResponse parse(ByteBuffer buffer) {
        return new UpdateMetadataResponse(CURRENT_SCHEMA.read(buffer));
    }

    public static UpdateMetadataResponse parse(ByteBuffer buffer, int version) {
        return new UpdateMetadataResponse(ProtoUtils.parseResponse(ApiKeys.UPDATE_METADATA_KEY.id, version, buffer));
    }

}