RerunPolicyFactory.java

/**
 * 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.
 */
package org.apache.falcon.rerun.policy;

import org.apache.falcon.entity.v0.process.PolicyType;

/**
 * A factory implementation to dole out rerun/retry policy.
 */
public final class RerunPolicyFactory {

    private RerunPolicyFactory() {
        // factory
    }

    public static AbstractRerunPolicy getRetryPolicy(PolicyType latePolicy) {
        switch (latePolicy) {
        case PERIODIC:
            return new PeriodicPolicy();

        case EXP_BACKOFF:
            return new ExpBackoffPolicy();

        case FINAL:
            return new FinalPolicy();

        default:
            throw new IllegalArgumentException("Unhandled Retry policy: " + latePolicy);
        }
    }
}