Examples with ConstraintItemBuilder org.apache.helix.model.builder.ConstraintItemBuilder used on opensource projects

Example 6 with ConstraintItemBuilder

use of org.apache.helix.model.builder.ConstraintItemBuilder in project helix by apache.

the class TestPreferenceListAsQueue method testReprioritizedWithConstraint.

/**
 * This test ensures successful creation when the state model has OFFLINE --> deprioritized and
 * a partition-level constraint enforces parallelism
 * @throws Exception
 */
@Test
public void testReprioritizedWithConstraint() throws Exception {
    _stateModel = "OnlineOfflineReprioritized";
    // Add a state model with the transition to ONLINE deprioritized
    _clusterSetup.addStateModelDef(_clusterName, _stateModel, createReprioritizedStateModelDef(_stateModel));
    // Add a constraint of one transition per partition
    ConstraintItemBuilder constraintItemBuilder = new ConstraintItemBuilder();
    constraintItemBuilder.addConstraintAttribute(ConstraintAttribute.MESSAGE_TYPE.toString(), "STATE_TRANSITION").addConstraintAttribute(ConstraintAttribute.PARTITION.toString(), ".*").addConstraintAttribute(ConstraintAttribute.CONSTRAINT_VALUE.toString(), String.valueOf(PARALLELISM));
    _admin.setConstraint(_clusterName, ConstraintType.MESSAGE_CONSTRAINT, "constraint_1", constraintItemBuilder.build());
    runTest();
}