package com.linkedin.helix.integration;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.testng.Assert;
import org.testng.annotations.Test;
import com.linkedin.helix.TestHelper;
import com.linkedin.helix.mock.controller.ClusterController;
import com.linkedin.helix.mock.storage.MockParticipant;
import com.linkedin.helix.mock.storage.MockParticipant.ErrTransition;
import com.linkedin.helix.tools.ClusterSetup;
import com.linkedin.helix.tools.ClusterStateVerifier;
public class TestResetResource extends ZkIntegrationTestBase
{
@Test
public void testResetNode() throws Exception
{
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
final int n = 5;
System.out.println("START " + clusterName + " at "
+ new Date(System.currentTimeMillis()));
TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
10, // partitions per resource
n, // number of nodes
3, // replicas
"MasterSlave",
true); // do rebalance
// start controller
ClusterController controller =
new ClusterController(clusterName, "controller_0", ZK_ADDR);
controller.syncStart();
Map<String, Set<String>> errPartitions = new HashMap<String, Set<String>>()
{
{
put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
put("OFFLINE-SLAVE", TestHelper.setOf("TestDB0_8"));
}
};
// start mock participants
MockParticipant[] participants = new MockParticipant[n];
for (int i = 0; i < n; i++)
{
String instanceName = "localhost_" + (12918 + i);
if (i == 0)
{
participants[i] =
new MockParticipant(clusterName,
instanceName,
ZK_ADDR,
new ErrTransition(errPartitions));
}
else
{
participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR);
}
participants[i].syncStart();
}
// verify cluster
Map<String, Map<String, String>> errStateMap =
new HashMap<String, Map<String, String>>();
errStateMap.put("TestDB0", new HashMap<String, String>());
errStateMap.get("TestDB0").put("TestDB0_4", "localhost_12918");
errStateMap.get("TestDB0").put("TestDB0_8", "localhost_12918");
boolean result =
ClusterStateVerifier.verifyByZkCallback((new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
clusterName,
errStateMap)));
Assert.assertTrue(result, "Cluster verification fails");
// reset resource "TestDB0"
participants[0].setTransition(null);
String command =
"--zkSvr " + ZK_ADDR + " --resetResource " + clusterName
+ " TestDB0";
ClusterSetup.processCommandLineArgs(command.split("\\s+"));
result =
ClusterStateVerifier.verifyByZkCallback((new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
clusterName)));
Assert.assertTrue(result, "Cluster verification fails");
// clean up
// wait for all zk callbacks done
Thread.sleep(1000);
controller.syncStop();
for (int i = 0; i < 5; i++)
{
participants[i].syncStop();
}
System.out.println("END " + clusterName + " at "
+ new Date(System.currentTimeMillis()));
}
}