package org.apache.helix.manager.zk;
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* 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
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* KIND, either express or implied. See the License for the
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import java.util.Arrays;
import java.util.Date;
import java.util.List;
import org.apache.helix.AccessOption;
import org.apache.helix.PropertyPathConfig;
import org.apache.helix.PropertyType;
import org.apache.helix.TestHelper;
import org.apache.helix.ZNRecord;
import org.apache.helix.ZNRecordUpdater;
import org.apache.helix.testutil.ZkTestBase;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestWtCacheSyncOpSingleThread extends ZkTestBase {
// TODO: add TestZkCacheSyncOpSingleThread
// TODO: add TestZkCacheAsyncOpMultiThread
@Test
public void testHappyPathZkCacheBaseDataAccessor() throws Exception {
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
// init zkCacheDataAccessor
String curStatePath =
PropertyPathConfig.getPath(PropertyType.CURRENTSTATES, clusterName, "localhost_8901");
String extViewPath = PropertyPathConfig.getPath(PropertyType.EXTERNALVIEW, clusterName);
ZkBaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_zkclient);
baseAccessor.create(curStatePath, null, AccessOption.PERSISTENT);
List<String> cachePaths = Arrays.asList(curStatePath, extViewPath);
ZkCacheBaseDataAccessor<ZNRecord> accessor =
new ZkCacheBaseDataAccessor<ZNRecord>(baseAccessor, null, cachePaths, null);
boolean ret = TestHelper.verifyZkCache(cachePaths, accessor._wtCache._cache, _zkclient, true);
Assert.assertTrue(ret, "wtCache doesn't match data on Zk");
// create 10 current states
for (int i = 0; i < 10; i++) {
String path = curStatePath + "/session_0/TestDB" + i;
boolean success = accessor.create(path, new ZNRecord("TestDB" + i), AccessOption.PERSISTENT);
Assert.assertTrue(success, "Should succeed in create: " + path);
}
// verify wtCache
// TestHelper.printCache(accessor._wtCache);
ret = TestHelper.verifyZkCache(cachePaths, accessor._wtCache._cache, _zkclient, false);
Assert.assertTrue(ret, "wtCache doesn't match data on Zk");
// update each current state 10 times, single thread
for (int i = 0; i < 10; i++) {
String path = curStatePath + "/session_0/TestDB" + i;
for (int j = 0; j < 10; j++) {
ZNRecord newRecord = new ZNRecord("TestDB" + i);
newRecord.setSimpleField("" + j, "" + j);
boolean success =
accessor.update(path, new ZNRecordUpdater(newRecord), AccessOption.PERSISTENT);
Assert.assertTrue(success, "Should succeed in update: " + path);
}
}
// verify cache
// TestHelper.printCache(accessor._wtCache._cache);
ret = TestHelper.verifyZkCache(cachePaths, accessor._wtCache._cache, _zkclient, false);
Assert.assertTrue(ret, "wtCache doesn't match data on Zk");
// set 10 external views
for (int i = 0; i < 10; i++) {
String path =
PropertyPathConfig.getPath(PropertyType.EXTERNALVIEW, clusterName, "TestDB" + i);
boolean success = accessor.set(path, new ZNRecord("TestDB" + i), AccessOption.PERSISTENT);
Assert.assertTrue(success, "Should succeed in set: " + path);
}
// verify wtCache
// accessor.printWtCache();
ret = TestHelper.verifyZkCache(cachePaths, accessor._wtCache._cache, _zkclient, false);
Assert.assertTrue(ret, "wtCache doesn't match data on Zk");
// get 10 external views
for (int i = 0; i < 10; i++) {
String path =
PropertyPathConfig.getPath(PropertyType.EXTERNALVIEW, clusterName, "TestDB" + i);
ZNRecord record = accessor.get(path, null, 0);
Assert.assertEquals(record.getId(), "TestDB" + i);
}
// getChildNames
List<String> childNames = accessor.getChildNames(extViewPath, 0);
// System.out.println(childNames);
Assert.assertEquals(childNames.size(), 10, "Should contain only: TestDB0-9");
for (int i = 0; i < 10; i++) {
Assert.assertTrue(childNames.contains("TestDB" + i));
}
// exists
for (int i = 0; i < 10; i++) {
String path =
PropertyPathConfig.getPath(PropertyType.CURRENTSTATES, clusterName, "localhost_8901",
"session_0", "TestDB" + i);
Assert.assertTrue(accessor.exists(path, 0));
}
System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}
@Test
public void testCreateFailZkCacheBaseDataAccessor() {
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
// init zkCacheDataAccessor
String curStatePath =
PropertyPathConfig.getPath(PropertyType.CURRENTSTATES, clusterName, "localhost_8901");
ZkBaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_zkclient);
ZkCacheBaseDataAccessor<ZNRecord> accessor =
new ZkCacheBaseDataAccessor<ZNRecord>(baseAccessor, null, Arrays.asList(curStatePath), null);
// create 10 current states
for (int i = 0; i < 10; i++) {
String path =
PropertyPathConfig.getPath(PropertyType.CURRENTSTATES, clusterName, "localhost_8901",
"session_1", "TestDB" + i);
boolean success = accessor.create(path, new ZNRecord("TestDB" + i), AccessOption.PERSISTENT);
Assert.assertTrue(success, "Should succeed in create: " + path);
}
// create same 10 current states again, should fail
for (int i = 0; i < 10; i++) {
String path =
PropertyPathConfig.getPath(PropertyType.CURRENTSTATES, clusterName, "localhost_8901",
"session_1", "TestDB" + i);
boolean success = accessor.create(path, new ZNRecord("TestDB" + i), AccessOption.PERSISTENT);
Assert.assertFalse(success, "Should fail in create due to NodeExists: " + path);
}
System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}
}