com.cloudera.nav.plugin.model.PigIdGenerator.java Source code

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Here is the source code for com.cloudera.nav.plugin.model.PigIdGenerator.java

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/*
 * Copyright (c) 2015 Cloudera, Inc.
 *
 * Licensed 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 com.cloudera.nav.plugin.model;

import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Preconditions;

import org.apache.commons.configuration.MapConfiguration;

public class PigIdGenerator {

    @VisibleForTesting
    public static final String PIG_SCRIPT_ID_PROP = "pig.script.id";
    @VisibleForTesting
    public static final String PIG_LOGICAL_PLAN_HASH_PROP = "pig.logicalPlan.hash";

    /**
     * Generate the correct operation id based on the job name and the
     * job configurations
     *
     * @param jobName Yarn application name or MR job name
     * @param jobConf
     * @return
     */
    public static String generateNewOperationId(String jobName, MapConfiguration jobConf) {
        Preconditions.checkArgument(jobConf.containsKey(PIG_LOGICAL_PLAN_HASH_PROP),
                "Could not find " + PIG_LOGICAL_PLAN_HASH_PROP + " in job configurations");
        String logicalPlanHash = jobConf.getString(PIG_LOGICAL_PLAN_HASH_PROP);
        return MD5IdGenerator.generateIdentity(jobName, logicalPlanHash);
    }

    /**
     * Create a valid PigOperationExecution identity from the pig job
     * configurations
     *
     * @param jobConf
     * @return
     */
    public static String generateExecutionId(MapConfiguration jobConf) {
        Preconditions.checkArgument(jobConf.containsKey(PIG_SCRIPT_ID_PROP),
                "Could not find " + PIG_SCRIPT_ID_PROP + " in job configurations");
        return MD5IdGenerator.generateIdentity(jobConf.getString(PIG_SCRIPT_ID_PROP));
    }
}