co.cask.cdap.internal.app.workflow.WorkflowNodeCreator.java Source code

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Here is the source code for co.cask.cdap.internal.app.workflow.WorkflowNodeCreator.java

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/*
 * Copyright  2015 Cask Data, 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 co.cask.cdap.internal.app.workflow;

import co.cask.cdap.api.schedule.SchedulableProgramType;
import co.cask.cdap.api.workflow.ScheduleProgramInfo;
import co.cask.cdap.api.workflow.WorkflowAction;
import co.cask.cdap.api.workflow.WorkflowActionNode;
import co.cask.cdap.api.workflow.WorkflowActionSpecification;
import co.cask.cdap.api.workflow.WorkflowNode;
import co.cask.cdap.internal.workflow.DefaultWorkflowActionSpecification;
import com.google.common.base.Preconditions;

/**
 * Helper to create {@link WorkflowNode}
 */
final class WorkflowNodeCreator {

    private WorkflowNodeCreator() {
    }

    static WorkflowNode createWorkflowActionNode(String programName, SchedulableProgramType programType) {
        switch (programType) {
        case MAPREDUCE:
            Preconditions.checkNotNull(programName, "MapReduce name is null.");
            Preconditions.checkArgument(!programName.isEmpty(), "MapReduce name is empty.");
            break;
        case SPARK:
            Preconditions.checkNotNull(programName, "Spark name is null.");
            Preconditions.checkArgument(!programName.isEmpty(), "Spark name is empty.");
            break;
        case CUSTOM_ACTION:
            //no-op
            break;
        default:
            break;
        }

        return new WorkflowActionNode(programName, new ScheduleProgramInfo(programType, programName));
    }

    static WorkflowNode createWorkflowCustomActionNode(WorkflowAction action) {
        Preconditions.checkArgument(action != null, "WorkflowAction is null.");
        WorkflowActionSpecification spec = new DefaultWorkflowActionSpecification(action);
        return new WorkflowActionNode(spec.getName(), spec);
    }

}