+++ /dev/null
-package org.apache.lucene.util;
-
-/**
- * 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.
- */
-
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.Map;
-
-import org.apache.lucene.util.TwoPhaseCommitTool.TwoPhaseCommitWrapper;
-
-public class TestTwoPhaseCommitTool extends LuceneTestCase {
-
- private static class TwoPhaseCommitImpl implements TwoPhaseCommit {
- static boolean commitCalled = false;
- final boolean failOnPrepare;
- final boolean failOnCommit;
- final boolean failOnRollback;
- boolean rollbackCalled = false;
- Map<String, String> prepareCommitData = null;
- Map<String, String> commitData = null;
-
- public TwoPhaseCommitImpl(boolean failOnPrepare, boolean failOnCommit, boolean failOnRollback) {
- this.failOnPrepare = failOnPrepare;
- this.failOnCommit = failOnCommit;
- this.failOnRollback = failOnRollback;
- }
-
- public void prepareCommit() throws IOException {
- prepareCommit(null);
- }
-
- public void prepareCommit(Map<String, String> commitData) throws IOException {
- this.prepareCommitData = commitData;
- assertFalse("commit should not have been called before all prepareCommit were", commitCalled);
- if (failOnPrepare) {
- throw new IOException("failOnPrepare");
- }
- }
-
- public void commit() throws IOException {
- commit(null);
- }
-
- public void commit(Map<String, String> commitData) throws IOException {
- this.commitData = commitData;
- commitCalled = true;
- if (failOnCommit) {
- throw new RuntimeException("failOnCommit");
- }
- }
-
- public void rollback() throws IOException {
- rollbackCalled = true;
- if (failOnRollback) {
- throw new Error("failOnRollback");
- }
- }
- }
-
- @Override
- public void setUp() throws Exception {
- super.setUp();
- TwoPhaseCommitImpl.commitCalled = false; // reset count before every test
- }
-
- public void testPrepareThenCommit() throws Exception {
- // tests that prepareCommit() is called on all objects before commit()
- TwoPhaseCommitImpl[] objects = new TwoPhaseCommitImpl[2];
- for (int i = 0; i < objects.length; i++) {
- objects[i] = new TwoPhaseCommitImpl(false, false, false);
- }
-
- // following call will fail if commit() is called before all prepare() were
- TwoPhaseCommitTool.execute(objects);
- }
-
- public void testRollback() throws Exception {
- // tests that rollback is called if failure occurs at any stage
- int numObjects = random.nextInt(8) + 3; // between [3, 10]
- TwoPhaseCommitImpl[] objects = new TwoPhaseCommitImpl[numObjects];
- for (int i = 0; i < objects.length; i++) {
- boolean failOnPrepare = random.nextBoolean();
- // we should not hit failures on commit usually
- boolean failOnCommit = random.nextDouble() < 0.05;
- boolean railOnRollback = random.nextBoolean();
- objects[i] = new TwoPhaseCommitImpl(failOnPrepare, failOnCommit, railOnRollback);
- }
-
- boolean anyFailure = false;
- try {
- TwoPhaseCommitTool.execute(objects);
- } catch (Throwable t) {
- anyFailure = true;
- }
-
- if (anyFailure) {
- // if any failure happened, ensure that rollback was called on all.
- for (TwoPhaseCommitImpl tpc : objects) {
- assertTrue("rollback was not called while a failure occurred during the 2-phase commit", tpc.rollbackCalled);
- }
- }
- }
-
- public void testWrapper() throws Exception {
- // tests that TwoPhaseCommitWrapper delegates prepare/commit w/ commitData
- TwoPhaseCommitImpl impl = new TwoPhaseCommitImpl(false, false, false);
- HashMap<String, String> commitData = new HashMap<String, String>();
- TwoPhaseCommitWrapper wrapper = new TwoPhaseCommitWrapper(impl, commitData);
-
- wrapper.prepareCommit();
- assertSame(commitData, impl.prepareCommitData);
-
- // wrapper should ignore passed commitData
- wrapper.prepareCommit(new HashMap<String, String>());
- assertSame(commitData, impl.prepareCommitData);
-
- wrapper.commit();
- assertSame(commitData, impl.commitData);
-
- // wrapper should ignore passed commitData
- wrapper.commit(new HashMap<String, String>());
- assertSame(commitData, impl.commitData);
- }
-
- public void testNullTPCs() throws Exception {
- int numObjects = random.nextInt(4) + 3; // between [3, 6]
- TwoPhaseCommit[] tpcs = new TwoPhaseCommit[numObjects];
- boolean setNull = false;
- for (int i = 0; i < tpcs.length; i++) {
- boolean isNull = random.nextDouble() < 0.3;
- if (isNull) {
- setNull = true;
- tpcs[i] = null;
- } else {
- tpcs[i] = new TwoPhaseCommitImpl(false, false, false);
- }
- }
-
- if (!setNull) {
- // none of the TPCs were picked to be null, pick one at random
- int idx = random.nextInt(numObjects);
- tpcs[idx] = null;
- }
-
- // following call would fail if TPCTool won't handle null TPCs properly
- TwoPhaseCommitTool.execute(tpcs);
- }
-
-}
fnp / pylucene.git / blobdiff