alpha/alpha-spec-tcc-db/src/main/java/org/apache/servicecomb/pack/alpha/spec/tcc/db/callback/OmegaCallbackWrapper.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.servicecomb.pack.alpha.spec.tcc.db.callback;

import java.util.concurrent.BlockingQueue;
import org.apache.servicecomb.pack.alpha.spec.tcc.db.jpa.ParticipatedEvent;
import org.apache.servicecomb.pack.common.TransactionStatus;

public class OmegaCallbackWrapper implements OmegaCallback {

  private final BlockingQueue<Runnable> pendingTasks;

  public OmegaCallbackWrapper(
      TccPendingTaskRunner tccPendingTaskRunner) {
    this.pendingTasks = tccPendingTaskRunner.getPendingTasks();
  }


  @Override
  public void invoke(ParticipatedEvent event, TransactionStatus status) {
    OmegaCallback omegaCallback;
    try {
      omegaCallback = OmegaCallbacksRegistry.retrieve(event.getServiceName(), event.getInstanceId());
    } catch (Exception e) {
      pendingTasks.offer(() -> invoke(event, status));
      throw e;
    }

    try {
      omegaCallback.invoke(event, status);
    } catch (Exception e) {
      OmegaCallbacksRegistry.remove(event.getServiceName(), event.getInstanceId());
      pendingTasks.offer(() -> invoke(event, status));
      throw e;
    }
  }
}