package org.apache.helix.integration;
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import java.util.Arrays;
import java.util.Date;
import java.util.Map;
import org.apache.helix.HelixAdmin;
import org.apache.helix.HelixDataAccessor;
import org.apache.helix.PropertyKey.Builder;
import org.apache.helix.TestHelper;
import org.apache.helix.api.id.StateModelDefId;
import org.apache.helix.manager.zk.MockParticipant;
import org.apache.helix.manager.zk.MockController;
import org.apache.helix.manager.zk.ZKHelixAdmin;
import org.apache.helix.model.ExternalView;
import org.apache.helix.model.IdealState;
import org.apache.helix.model.IdealState.RebalanceMode;
import org.apache.helix.model.InstanceConfig;
import org.apache.helix.model.StateModelDefinition;
import org.apache.helix.testutil.ZkTestBase;
import org.apache.helix.tools.ClusterStateVerifier;
import org.apache.helix.tools.ClusterStateVerifier.BestPossAndExtViewZkVerifier;
import org.apache.helix.tools.StateModelConfigGenerator;
import org.testng.Assert;
// Helix-50: integration test for generate message based on state priority
public class TestInvalidAutoIdealState extends ZkTestBase {
// TODO Disable this test, need refactor it for testing message generation based on state priority
// @Test
void testInvalidReplica2() throws Exception {
HelixAdmin admin = new ZKHelixAdmin(_zkaddr);
// create cluster
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
String db = "TestDB";
System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
// System.out.println("Creating cluster: " + clusterName);
admin.addCluster(clusterName, true);
// add MasterSlave state mode definition
admin.addStateModelDef(clusterName, "MasterSlave", new StateModelDefinition(
StateModelConfigGenerator.generateConfigForMasterSlave()));
// Add nodes to the cluster
int n = 3;
System.out.println("Adding " + n + " participants to the cluster");
for (int i = 0; i < n; i++) {
int port = 12918 + i;
InstanceConfig instanceConfig = new InstanceConfig("localhost_" + port);
instanceConfig.setHostName("localhost");
instanceConfig.setPort("" + port);
instanceConfig.setInstanceEnabled(true);
admin.addInstance(clusterName, instanceConfig);
// System.out.println("\t Added participant: " + instanceConfig.getInstanceName());
}
// construct ideal-state manually
IdealState idealState = new IdealState(db);
idealState.setRebalanceMode(RebalanceMode.SEMI_AUTO);
idealState.setNumPartitions(2);
idealState.setReplicas("" + 2); // should be 3
idealState.setStateModelDefId(StateModelDefId.from("MasterSlave"));
idealState.getRecord().setListField("TestDB_0",
Arrays.asList("localhost_12918", "localhost_12919", "localhost_12920"));
idealState.getRecord().setListField("TestDB_1",
Arrays.asList("localhost_12919", "localhost_12918", "localhost_12920"));
admin.setResourceIdealState(clusterName, "TestDB", idealState);
// start participants
MockParticipant[] participants = new MockParticipant[n];
for (int i = 0; i < n; i++) {
String instanceName = "localhost_" + (12918 + i);
participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
participants[i].syncStart();
}
MockController controller =
new MockController(_zkaddr, clusterName, "controller_0");
controller.syncStart();
boolean result =
ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(_zkaddr,
clusterName));
Assert.assertTrue(result);
// make sure localhost_12919 is master on TestDB_1
HelixDataAccessor accessor = controller.getHelixDataAccessor();
Builder keyBuilder = accessor.keyBuilder();
ExternalView extView = accessor.getProperty(keyBuilder.externalView(db));
Map<String, String> stateMap = extView.getStateMap(db + "_1");
Assert
.assertEquals(
stateMap.get("localhost_12919"),
"MASTER",
"localhost_12919 should be MASTER even though replicas is set to 2, since we generate message based on target-state priority");
System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}
}