io.zeebe.transport.impl.RequestResponseHeaderDescriptor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of zb-transport Show documentation

There is a newer version: 0.16.4

/*
 * Copyright © 2017 camunda services GmbH ([email protected])
 *
 * Licensed 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 io.zeebe.transport.impl;

import static org.agrona.BitUtil.SIZE_OF_LONG;

import org.agrona.DirectBuffer;
import org.agrona.concurrent.UnsafeBuffer;

public class RequestResponseHeaderDescriptor {
  public static final int REQUEST_ID_OFFSET;
  public static final int HEADER_LENGTH;

  static {
    int offset = 0;

    REQUEST_ID_OFFSET = offset;
    offset += SIZE_OF_LONG;

    HEADER_LENGTH = offset;
  }

  public static int framedLength(int messageLength) {
    return HEADER_LENGTH + messageLength;
  }

  public static int headerLength() {
    return HEADER_LENGTH;
  }

  public static int requestIdOffset(int offset) {
    return offset + REQUEST_ID_OFFSET;
  }

  protected UnsafeBuffer buffer = new UnsafeBuffer(0, 0);

  public RequestResponseHeaderDescriptor wrap(DirectBuffer buffer, int offset) {
    this.buffer.wrap(buffer, offset, HEADER_LENGTH);
    return this;
  }

  public RequestResponseHeaderDescriptor requestId(long requestId) {
    buffer.putLong(REQUEST_ID_OFFSET, requestId);
    return this;
  }

  public long requestId() {
    return buffer.getLong(REQUEST_ID_OFFSET);
  }
}