Package org.apache.helix.model

Examples of org.apache.helix.model.ClusterConstraints

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          + ". Requires ClusterDataCache|RESOURCES|MESSAGES_SELECTED");
    }

    MessageThrottleStageOutput output = new MessageThrottleStageOutput();

        ClusterConstraints constraint = cache.getConstraint(ConstraintType.MESSAGE_CONSTRAINT);
    Map<String, Integer> throttleCounterMap = new HashMap<String, Integer>();

    if (constraint != null)
    {
      // go through all pending messages, they should be counted but not throttled
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    record.getMapField("constraint5").put("CONSTRAINT_VALUE", "3");
    ConstraintItem constraint5 = new ConstraintItem(record.getMapField("constraint5"));

    Builder keyBuilder = accessor.keyBuilder();
    accessor.setProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()),
                         new ClusterConstraints(record));

    // ClusterConstraints constraint =
    // accessor.getProperty(ClusterConstraints.class,
    // PropertyType.CONFIGS,
    // ConfigScopeProperty.CONSTRAINT.toString(),
    // ConstraintType.MESSAGE_CONSTRAINT.toString());
    ClusterConstraints constraint =
        accessor.getProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()));

    MessageThrottleStage throttleStage = new MessageThrottleStage();

    // test constraintSelection
    // message1: hit contraintSelection rule1 and rule2
    Message msg1 =
        createMessage(MessageType.STATE_TRANSITION,
                      "msgId-001",
                      "OFFLINE",
                      "SLAVE",
                      "TestDB",
                      "localhost_0");

    Map<ConstraintAttribute, String> msgAttr =
        ClusterConstraints.toConstraintAttributes(msg1);
    Set<ConstraintItem> matches = constraint.match(msgAttr);
    System.out.println(msg1 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 5);
    Assert.assertTrue(containsConstraint(matches, constraint0));
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint2));
    Assert.assertTrue(containsConstraint(matches, constraint4));
    Assert.assertTrue(containsConstraint(matches, constraint5));

    matches = throttleStage.selectConstraints(matches, msgAttr);
    System.out.println(msg1 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 2);
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint5));

    // message2: hit contraintSelection rule1, rule2, and rule3
    Message msg2 =
        createMessage(MessageType.STATE_TRANSITION,
                      "msgId-002",
                      "OFFLINE",
                      "SLAVE",
                      "TestDB",
                      "localhost_1");

    msgAttr = ClusterConstraints.toConstraintAttributes(msg2);
    matches = constraint.match(msgAttr);
    System.out.println(msg2 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 5);
    Assert.assertTrue(containsConstraint(matches, constraint0));
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint2));
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    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();

    accessor.setProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()),
                         new ClusterConstraints(record));

    record =
        accessor.getProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()))
                .getRecord();
    ClusterConstraints constraint = new ClusterConstraints(record);
    // System.out.println("constraint: " + constraint);

    // message1
    Message msg1 =
        createMessage(MessageType.STATE_TRANSITION,
                      "msgId-001",
                      "OFFLINE",
                      "SLAVE",
                      "TestDB",
                      "localhost_12918");

    Map<ConstraintAttribute, String> msgAttr =
        ClusterConstraints.toConstraintAttributes(msg1);
    Set<ConstraintItem> matches = constraint.match(msgAttr);
    System.out.println(msg1 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 5);
    Assert.assertTrue(contains(matches, constraint0));
    Assert.assertTrue(contains(matches, constraint1));
    Assert.assertTrue(contains(matches, constraint2));
    Assert.assertTrue(contains(matches, constraint4));
    Assert.assertTrue(contains(matches, constraint5));

    // message2
    Message msg2 =
        createMessage(MessageType.STATE_TRANSITION,
                      "msgId-002",
                      "OFFLINE",
                      "SLAVE",
                      "TestDB",
                      "localhost_12919");

    msgAttr = ClusterConstraints.toConstraintAttributes(msg2);
    matches = constraint.match(msgAttr);
    System.out.println(msg2 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 5);
    Assert.assertTrue(contains(matches, constraint0));
    Assert.assertTrue(contains(matches, constraint1));
    Assert.assertTrue(contains(matches, constraint2));
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    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();

    accessor.setProperty(keyBuilder.constraint(ConstraintType.STATE_CONSTRAINT.toString()),
                         new ClusterConstraints(record));

    record =
        accessor.getProperty(keyBuilder.constraint(ConstraintType.STATE_CONSTRAINT.toString()))
                .getRecord();
    ClusterConstraints constraint = new ClusterConstraints(record);
    // System.out.println("constraint: " + constraint);

    // state1: hit rule2
    Map<ConstraintAttribute, String> stateAttr1 =
        new HashMap<ConstraintAttribute, String>();
    stateAttr1.put(ConstraintAttribute.STATE, "MASTER");
    stateAttr1.put(ConstraintAttribute.RESOURCE, "TestDB");

    Set<ConstraintItem> matches = constraint.match(stateAttr1);
    System.out.println(stateAttr1 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 3);
    Assert.assertTrue(contains(matches, constraint0));
    Assert.assertTrue(contains(matches, constraint1));
    Assert.assertTrue(contains(matches, constraint2));

    // matches = selectConstraints(matches, stateAttr1);
    // System.out.println(stateAttr1 + " matches(" + matches.size() + "): " + matches);
    // Assert.assertEquals(matches.size(), 2);
    // Assert.assertTrue(contains(matches, constraint0));
    // Assert.assertTrue(contains(matches, constraint1));

    // state2: not hit any rules
    Map<ConstraintAttribute, String> stateAttr2 =
        new HashMap<ConstraintAttribute, String>();
    stateAttr2.put(ConstraintAttribute.STATE, "MASTER");
    stateAttr2.put(ConstraintAttribute.RESOURCE, "MyDB");

    matches = constraint.match(stateAttr2);
    System.out.println(stateAttr2 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 2);
    Assert.assertTrue(contains(matches, constraint0));
    Assert.assertTrue(contains(matches, constraint2));
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    record.getMapField("constraint5").put("CONSTRAINT_VALUE", "3");
    ConstraintItem constraint5 = new ConstraintItem(record.getMapField("constraint5"));

    Builder keyBuilder = accessor.keyBuilder();
    accessor.setProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()),
        new ClusterConstraints(record));

    // ClusterConstraints constraint =
    // accessor.getProperty(ClusterConstraints.class,
    // PropertyType.CONFIGS,
    // ConfigScopeProperty.CONSTRAINT.toString(),
    // ConstraintType.MESSAGE_CONSTRAINT.toString());
    ClusterConstraints constraint =
        accessor.getProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()));

    MessageThrottleStage throttleStage = new MessageThrottleStage();

    // test constraintSelection
    // message1: hit contraintSelection rule1 and rule2
    Message msg1 =
        createMessage(MessageType.STATE_TRANSITION, "msgId-001", "OFFLINE", "SLAVE", "TestDB",
            "localhost_0");

    Map<ConstraintAttribute, String> msgAttr = ClusterConstraints.toConstraintAttributes(msg1);
    Set<ConstraintItem> matches = constraint.match(msgAttr);
    System.out.println(msg1 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 5);
    Assert.assertTrue(containsConstraint(matches, constraint0));
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint2));
    Assert.assertTrue(containsConstraint(matches, constraint4));
    Assert.assertTrue(containsConstraint(matches, constraint5));

    matches = throttleStage.selectConstraints(matches, msgAttr);
    System.out.println(msg1 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 2);
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint5));

    // message2: hit contraintSelection rule1, rule2, and rule3
    Message msg2 =
        createMessage(MessageType.STATE_TRANSITION, "msgId-002", "OFFLINE", "SLAVE", "TestDB",
            "localhost_1");

    msgAttr = ClusterConstraints.toConstraintAttributes(msg2);
    matches = constraint.match(msgAttr);
    System.out.println(msg2 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 5);
    Assert.assertTrue(containsConstraint(matches, constraint0));
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint2));
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    ZKHelixAdmin tool = new ZKHelixAdmin(_gZkClient);
    tool.addCluster(clusterName, true);
    Assert.assertTrue(ZKUtil.isClusterSetup(clusterName, _gZkClient), "Cluster should be setup");

    // test admin.getMessageConstraints()
    ClusterConstraints constraints =
        tool.getConstraints(clusterName, ConstraintType.MESSAGE_CONSTRAINT);
    Assert.assertNull(constraints, "message-constraint should NOT exist for cluster: " + className);

    // remove non-exist constraint
    try {
      tool.removeConstraint(clusterName, ConstraintType.MESSAGE_CONSTRAINT, "constraint1");
      // will leave a null message-constraint znode on zk
    } catch (Exception e) {
      Assert.fail("Should not throw exception when remove a non-exist constraint.");
    }

    // add a message constraint
    ConstraintItemBuilder builder = new ConstraintItemBuilder();
    builder.addConstraintAttribute(ConstraintAttribute.RESOURCE.toString(), "MyDB")
        .addConstraintAttribute(ConstraintAttribute.CONSTRAINT_VALUE.toString(), "1");
    tool.setConstraint(clusterName, ConstraintType.MESSAGE_CONSTRAINT, "constraint1",
        builder.build());

    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    PropertyKey.Builder keyBuilder = new PropertyKey.Builder(clusterName);
    constraints =
        accessor.getProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()));
    Assert.assertNotNull(constraints, "message-constraint should exist");
    ConstraintItem item = constraints.getConstraintItem("constraint1");
    Assert.assertNotNull(item, "message-constraint for constraint1 should exist");
    Assert.assertEquals(item.getConstraintValue(), "1");
    Assert.assertEquals(item.getAttributeValue(ConstraintAttribute.RESOURCE), "MyDB");

    // test admin.getMessageConstraints()
    constraints = tool.getConstraints(clusterName, ConstraintType.MESSAGE_CONSTRAINT);
    Assert.assertNotNull(constraints, "message-constraint should exist");
    item = constraints.getConstraintItem("constraint1");
    Assert.assertNotNull(item, "message-constraint for constraint1 should exist");
    Assert.assertEquals(item.getConstraintValue(), "1");
    Assert.assertEquals(item.getAttributeValue(ConstraintAttribute.RESOURCE), "MyDB");

    // remove a exist message-constraint
    tool.removeConstraint(clusterName, ConstraintType.MESSAGE_CONSTRAINT, "constraint1");
    constraints =
        accessor.getProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()));
    Assert.assertNotNull(constraints, "message-constraint should exist");
    item = constraints.getConstraintItem("constraint1");
    Assert.assertNull(item, "message-constraint for constraint1 should NOT exist");

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
  }
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          + ". Requires ClusterDataCache|RESOURCES|MESSAGES_SELECTED");
    }

    MessageThrottleStageOutput output = new MessageThrottleStageOutput();

    ClusterConstraints constraint = cache.getConstraint(ConstraintType.MESSAGE_CONSTRAINT);
    Map<String, Integer> throttleCounterMap = new HashMap<String, Integer>();

    if (constraint != null) {
      // go through all pending messages, they should be counted but not throttled
      for (String instance : cache.getLiveInstances().keySet()) {
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    builder.addConstraintAttribute(attribute, value);
    return this;
  }

  public ClusterConstraints build() {
    ClusterConstraints constraints = new ClusterConstraints(_constraintType);

    for (String constraintId : _constraintBuilderMap.keySet()) {
      ConstraintItemBuilder builder = _constraintBuilderMap.get(constraintId);
      constraints.addConstraintItem(constraintId, builder.build());
    }
    return constraints;
  }
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    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();

    accessor.setProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()),
        new ClusterConstraints(record));

    record =
        accessor.getProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()))
            .getRecord();
    ClusterConstraints constraint = new ClusterConstraints(record);
    // System.out.println("constraint: " + constraint);

    // message1
    Message msg1 =
        createMessage(MessageType.STATE_TRANSITION, "msgId-001", "OFFLINE", "SLAVE", "TestDB",
            "localhost_12918");

    Map<ConstraintAttribute, String> msgAttr = ClusterConstraints.toConstraintAttributes(msg1);
    Set<ConstraintItem> matches = constraint.match(msgAttr);
    System.out.println(msg1 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 5);
    Assert.assertTrue(contains(matches, constraint0));
    Assert.assertTrue(contains(matches, constraint1));
    Assert.assertTrue(contains(matches, constraint2));
    Assert.assertTrue(contains(matches, constraint4));
    Assert.assertTrue(contains(matches, constraint5));

    // message2
    Message msg2 =
        createMessage(MessageType.STATE_TRANSITION, "msgId-002", "OFFLINE", "SLAVE", "TestDB",
            "localhost_12919");

    msgAttr = ClusterConstraints.toConstraintAttributes(msg2);
    matches = constraint.match(msgAttr);
    System.out.println(msg2 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 5);
    Assert.assertTrue(contains(matches, constraint0));
    Assert.assertTrue(contains(matches, constraint1));
    Assert.assertTrue(contains(matches, constraint2));
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    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();

    accessor.setProperty(keyBuilder.constraint(ConstraintType.STATE_CONSTRAINT.toString()),
        new ClusterConstraints(record));

    record =
        accessor.getProperty(keyBuilder.constraint(ConstraintType.STATE_CONSTRAINT.toString()))
            .getRecord();
    ClusterConstraints constraint = new ClusterConstraints(record);
    // System.out.println("constraint: " + constraint);

    // state1: hit rule2
    Map<ConstraintAttribute, String> stateAttr1 = new HashMap<ConstraintAttribute, String>();
    stateAttr1.put(ConstraintAttribute.STATE, "MASTER");
    stateAttr1.put(ConstraintAttribute.RESOURCE, "TestDB");

    Set<ConstraintItem> matches = constraint.match(stateAttr1);
    System.out.println(stateAttr1 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 3);
    Assert.assertTrue(contains(matches, constraint0));
    Assert.assertTrue(contains(matches, constraint1));
    Assert.assertTrue(contains(matches, constraint2));

    // matches = selectConstraints(matches, stateAttr1);
    // System.out.println(stateAttr1 + " matches(" + matches.size() + "): " + matches);
    // Assert.assertEquals(matches.size(), 2);
    // Assert.assertTrue(contains(matches, constraint0));
    // Assert.assertTrue(contains(matches, constraint1));

    // state2: not hit any rules
    Map<ConstraintAttribute, String> stateAttr2 = new HashMap<ConstraintAttribute, String>();
    stateAttr2.put(ConstraintAttribute.STATE, "MASTER");
    stateAttr2.put(ConstraintAttribute.RESOURCE, "MyDB");

    matches = constraint.match(stateAttr2);
    System.out.println(stateAttr2 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 2);
    Assert.assertTrue(contains(matches, constraint0));
    Assert.assertTrue(contains(matches, constraint2));
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Related Classes of org.apache.helix.model.ClusterConstraints

  • org.apache.helix.api.accessor.ClusterAccessor
  • org.apache.helix.api.config.ClusterConfig
  • org.apache.helix.api.config.ClusterConfig$Builder
  • org.apache.helix.api.config.ClusterConfig$Delta
  • org.apache.helix.controller.GenericHelixController
  • org.apache.helix.controller.stages.MessageThrottleStage
  • org.apache.helix.controller.stages.TestMessageThrottleStage
  • org.apache.helix.manager.zk.TestZkHelixAdmin
  • org.apache.helix.manager.zk.ZKHelixAdmin
  • org.apache.helix.model.builder.ClusterConstraintsBuilder
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