[GitHub] WillemJiang commented on a change in pull request #95: [SCB-149] service aware callback

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WillemJiang commented on a change in pull request #95: [SCB-149] service aware callback
URL: https://github.com/apache/incubator-servicecomb-saga/pull/95#discussion_r159177874
 
 

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 File path: alpha/alpha-core/src/main/java/io/servicecomb/saga/alpha/core/RetryOmegaCallback.java
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 @@ -0,0 +1,71 @@
+/*
+ * 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 io.servicecomb.saga.alpha.core;
+
+import java.lang.invoke.MethodHandles;
+import java.util.concurrent.TimeUnit;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class RetryOmegaCallback implements OmegaCallback {
+  private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+  private static final String ERROR_MESSAGE = "Failed to compensate service [{}] instance [{}] with method [{}], global tx id [{}] and local tx id [{}]";
+
+  private final OmegaCallback underlying;
+  private final int delay;
+
+  public RetryOmegaCallback(OmegaCallback underlying, int delay) {
+    this.underlying = underlying;
+    this.delay = delay;
+  }
+
+  @Override
+  public void compensate(TxEvent event) {
 
 Review comment:
   The calling thread is blocked, we may need to think for another way to do it.

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