package org.apache.helix;
/*
* 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.
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import java.util.Date;
import java.util.List;
import org.apache.helix.manager.zk.ZKHelixAdmin;
import org.apache.helix.model.HelixConfigScope;
import org.apache.helix.model.InstanceConfig;
import org.apache.helix.model.HelixConfigScope.ConfigScopeProperty;
import org.apache.helix.model.builder.HelixConfigScopeBuilder;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestHelixConfigAccessor extends ZkUnitTestBase {
@Test
public void testBasic() throws Exception {
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
TestHelper.setupCluster(clusterName,
ZK_ADDR,
12918,
"localhost",
"TestDB",
1,
10,
5,
3,
"MasterSlave",
true);
ConfigAccessor configAccessor = new ConfigAccessor(_gZkClient);
HelixConfigScope clusterScope = new HelixConfigScopeBuilder(ConfigScopeProperty.CLUSTER)
.forCluster(clusterName)
.build();
// cluster scope config
String clusterConfigValue = configAccessor.get(clusterScope, "clusterConfigKey");
Assert.assertNull(clusterConfigValue);
configAccessor.set(clusterScope, "clusterConfigKey", "clusterConfigValue");
clusterConfigValue = configAccessor.get(clusterScope, "clusterConfigKey");
Assert.assertEquals(clusterConfigValue, "clusterConfigValue");
// resource scope config
HelixConfigScope resourceScope = new HelixConfigScopeBuilder(ConfigScopeProperty.RESOURCE)
.forCluster(clusterName)
.forResource("testResource")
.build();
configAccessor.set(resourceScope, "resourceConfigKey", "resourceConfigValue");
String resourceConfigValue = configAccessor.get(resourceScope, "resourceConfigKey");
Assert.assertEquals(resourceConfigValue, "resourceConfigValue");
// partition scope config
HelixConfigScope partitionScope = new HelixConfigScopeBuilder(ConfigScopeProperty.PARTITION)
.forCluster(clusterName)
.forResource("testResource")
.forPartition("testPartition")
.build();
configAccessor.set(partitionScope, "partitionConfigKey", "partitionConfigValue");
String partitionConfigValue = configAccessor.get(partitionScope, "partitionConfigKey");
Assert.assertEquals(partitionConfigValue, "partitionConfigValue");
// participant scope config
HelixConfigScope participantScope = new HelixConfigScopeBuilder(ConfigScopeProperty.PARTICIPANT)
.forCluster(clusterName)
.forParticipant("localhost_12918")
.build();
configAccessor.set(participantScope, "participantConfigKey", "participantConfigValue");
String participantConfigValue = configAccessor.get(participantScope, "participantConfigKey");
Assert.assertEquals(participantConfigValue, "participantConfigValue");
// test get-keys
List<String> keys = configAccessor.getKeys(new HelixConfigScopeBuilder(ConfigScopeProperty.RESOURCE)
.forCluster(clusterName)
.build());
Assert.assertEquals(keys.size(), 1, "should be [testResource]");
Assert.assertEquals(keys.get(0), "testResource");
// keys = configAccessor.getKeys(new HelixConfigScopeBuilder(ConfigScopeProperty.CLUSTER)
// .forCluster(clusterName)
// .build());
// Assert.assertEquals(keys.size(), 1, "should be [" + clusterName + "]");
// Assert.assertEquals(keys.get(0), clusterName);
keys = configAccessor.getKeys(new HelixConfigScopeBuilder(ConfigScopeProperty.PARTICIPANT)
.forCluster(clusterName)
.build());
Assert.assertEquals(keys.size(), 5, "should be [localhost_12918~22] sorted");
Assert.assertTrue(keys.contains("localhost_12918"));
Assert.assertTrue(keys.contains("localhost_12922"));
keys = configAccessor.getKeys(new HelixConfigScopeBuilder(ConfigScopeProperty.PARTITION)
.forCluster(clusterName)
.forResource("testResource")
.build());
Assert.assertEquals(keys.size(), 1, "should be [testPartition]");
Assert.assertEquals(keys.get(0), "testPartition");
keys = configAccessor.getKeys(new HelixConfigScopeBuilder(ConfigScopeProperty.RESOURCE)
.forCluster(clusterName)
.forResource("testResource")
.build());
Assert.assertEquals(keys.size(), 1, "should be [resourceConfigKey]");
Assert.assertTrue(keys.contains("resourceConfigKey"));
keys = configAccessor.getKeys(new HelixConfigScopeBuilder(ConfigScopeProperty.CLUSTER)
.forCluster(clusterName)
.build());
Assert.assertEquals(keys.size(), 1, "should be [clusterConfigKey]");
Assert.assertTrue(keys.contains("clusterConfigKey"));
keys = configAccessor.getKeys(new HelixConfigScopeBuilder(ConfigScopeProperty.PARTICIPANT)
.forCluster(clusterName)
.forParticipant("localhost_12918")
.build());
Assert.assertEquals(keys.size(), 4, "should be [HELIX_ENABLED, HELIX_PORT, HELIX_HOST, participantConfigKey]");
Assert.assertTrue(keys.contains("participantConfigKey"));
keys = configAccessor.getKeys(new HelixConfigScopeBuilder(ConfigScopeProperty.PARTITION)
.forCluster(clusterName)
.forResource("testResource")
.forPartition("testPartition")
.build());
Assert.assertEquals(keys.size(), 1, "should be [partitionConfigKey]");
Assert.assertEquals(keys.get(0), "partitionConfigKey");
// test configAccessor.remove
configAccessor.remove(clusterScope, "clusterConfigKey");
clusterConfigValue = configAccessor.get(clusterScope, "clusterConfigKey");
Assert.assertNull(clusterConfigValue, "Should be null since it's removed");
configAccessor.remove(resourceScope, "resourceConfigKey");
resourceConfigValue = configAccessor.get(resourceScope, "resourceConfigKey");
Assert.assertNull(resourceConfigValue, "Should be null since it's removed");
configAccessor.remove(partitionScope, "partitionConfigKey");
partitionConfigValue = configAccessor.get(partitionScope, "partitionConfigKey");
Assert.assertNull(partitionConfigValue, "Should be null since it's removed");
configAccessor.remove(participantScope, "participantConfigKey");
participantConfigValue = configAccessor.get(partitionScope, "participantConfigKey");
Assert.assertNull(participantConfigValue, "Should be null since it's removed");
// negative tests
try
{
new HelixConfigScopeBuilder(ConfigScopeProperty.PARTITION)
.forPartition("testPartition")
.build();
Assert.fail("Should fail since cluster name is not set");
} catch (Exception e)
{
// OK
}
try
{
new HelixConfigScopeBuilder(ConfigScopeProperty.PARTICIPANT)
.forParticipant("testParticipant")
.build();
Assert.fail("Should fail since cluster name is not set");
} catch (Exception e)
{
// OK
}
try
{
new HelixConfigScopeBuilder(ConfigScopeProperty.PARTITION)
.forCluster("testCluster")
.forPartition("testPartition")
.build();
Assert.fail("Should fail since resource name is not set");
} catch (Exception e)
{
// OK
// e.printStackTrace();
}
System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}
// HELIX-25: set participant Config should check existence of instance
@Test
public void testSetNonexistentParticipantConfig() throws Exception
{
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
System.out.println("START " + clusterName + " at "
+ new Date(System.currentTimeMillis()));
ZKHelixAdmin admin = new ZKHelixAdmin(_gZkClient);
admin.addCluster(clusterName, true);
ConfigAccessor configAccessor = new ConfigAccessor(_gZkClient);
HelixConfigScope participantScope = new HelixConfigScopeBuilder(ConfigScopeProperty.PARTICIPANT)
.forCluster(clusterName)
.forParticipant("localhost_12918")
.build();
try {
configAccessor.set(participantScope, "participantConfigKey", "participantConfigValue");
Assert.fail("Except fail to set participant-config because participant: localhost_12918 is not added to cluster yet");
} catch (HelixException e) {
// OK
}
admin.addInstance(clusterName, new InstanceConfig("localhost_12918"));
try {
configAccessor.set(participantScope, "participantConfigKey", "participantConfigValue");
} catch (Exception e) {
Assert.fail("Except succeed to set participant-config because participant: localhost_12918 has been added to cluster");
}
String participantConfigValue = configAccessor.get(participantScope, "participantConfigKey");
Assert.assertEquals(participantConfigValue, "participantConfigValue");
System.out.println("END " + clusterName + " at "
+ new Date(System.currentTimeMillis()));
}
}