UnreliableImplementation.java
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上传日期:2018-01-08
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文件大小:2k
- /**
- * 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.hadoop.io.retry;
- import org.apache.hadoop.ipc.RemoteException;
- public class UnreliableImplementation implements UnreliableInterface {
- private int failsOnceInvocationCount,
- failsOnceWithValueInvocationCount,
- failsTenTimesInvocationCount;
-
- public void alwaysSucceeds() {
- // do nothing
- }
-
- public void alwaysFailsWithFatalException() throws FatalException {
- throw new FatalException();
- }
-
- public void alwaysFailsWithRemoteFatalException() throws RemoteException {
- throw new RemoteException(FatalException.class.getName(), "Oops");
- }
- public void failsOnceThenSucceeds() throws UnreliableException {
- if (failsOnceInvocationCount++ == 0) {
- throw new UnreliableException();
- }
- }
- public boolean failsOnceThenSucceedsWithReturnValue() throws UnreliableException {
- if (failsOnceWithValueInvocationCount++ == 0) {
- throw new UnreliableException();
- }
- return true;
- }
- public void failsTenTimesThenSucceeds() throws UnreliableException {
- if (failsTenTimesInvocationCount++ < 10) {
- throw new UnreliableException();
- }
- }
- }