MasterWorkerProtocol.java

package models.com.mc.workers;

import java.io.Serializable;

public abstract class MasterWorkerProtocol {

  // Messages from/to Workers

  public static final class RegisterWorker implements Serializable {
    public final String workerId;

    public RegisterWorker(String workerId) {
      this.workerId = workerId;
    }

    @Override
    public String toString() {
      return "RegisterWorker{" +
        "workerId='" + workerId + '\'' +
        '}';
    }
  }

  public static final class WorkerRequestsWork implements Serializable {
    public final String workerId;

    public WorkerRequestsWork(String workerId) {
      this.workerId = workerId;
    }

    @Override
    public String toString() {
      return "WorkerRequestsWork{" +
        "workerId='" + workerId + '\'' +
        '}';
    }
  }

  public static final class WorkIsDone implements Serializable {
    public final String workerId;
    public final String workId;
    public final Object result;

    public WorkIsDone(String workerId, String workId, Object result) {
      this.workerId = workerId;
      this.workId = workId;
      this.result = result;
    }

    @Override
    public String toString() {
      return "WorkIsDone{" +
        "workerId='" + workerId + '\'' +
        ", workId='" + workId + '\'' +
        ", result=" + result +
        '}';
    }
  }

  public static final class WorkFailed implements Serializable {
    public final String workerId;
    public final String workId;

    public WorkFailed(String workerId, String workId) {
      this.workerId = workerId;
      this.workId = workId;
    }

    @Override
    public String toString() {
      return "WorkFailed{" +
        "workerId='" + workerId + '\'' +
        ", workId='" + workId + '\'' +
        '}';
    }
  }

  // Messages to Workers

  public static final class WorkIsReady implements Serializable {
    private static final WorkIsReady instance = new WorkIsReady();
    public static WorkIsReady getInstance() {
      return instance;
    }
  }
}