| /* |
| * 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.core; |
| |
| import static java.util.Collections.emptyMap; |
| |
| import java.lang.invoke.MethodHandles; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| import org.apache.servicecomb.pack.alpha.core.exception.CompensateAckFailedException; |
| import org.apache.servicecomb.pack.alpha.core.exception.CompensateConnectException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class CompositeOmegaCallback implements OmegaCallback { |
| private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| private final Map<String, Map<String, OmegaCallback>> callbacks; |
| |
| public CompositeOmegaCallback(Map<String, Map<String, OmegaCallback>> callbacks) { |
| this.callbacks = callbacks; |
| } |
| |
| @Override |
| public void compensate(TxEvent event) { |
| Map<String, OmegaCallback> serviceCallbacks = callbacks.getOrDefault(event.serviceName(), emptyMap()); |
| |
| OmegaCallback omegaCallback = serviceCallbacks.get(event.instanceId()); |
| if (omegaCallback == null) { |
| LOG.info("Cannot find the service with the instanceId {}, call the other instance.", event.instanceId()); |
| // TODO extract an Interface to let user define the serviceCallback instance pick strategy |
| Iterator<OmegaCallback> iterator = new ArrayList<>(serviceCallbacks.values()).iterator(); |
| if(iterator.hasNext()) { |
| omegaCallback = iterator.next(); |
| } |
| } |
| if(omegaCallback==null){ |
| throw new AlphaException("No such omega callback found for service " + event.serviceName()); |
| } |
| |
| try { |
| omegaCallback.compensate(event); |
| } catch (CompensateConnectException e) { |
| serviceCallbacks.values().remove(omegaCallback); |
| throw e; |
| } catch (CompensateAckFailedException e) { |
| throw e; |
| } catch (Exception e) { |
| serviceCallbacks.values().remove(omegaCallback); |
| throw e; |
| } |
| } |
| } |