co.cask.cdap.etl.mock.batch.NodeStatesAction.java Source code

Introduction

Here is the source code for co.cask.cdap.etl.mock.batch.NodeStatesAction.java

Source

/*
 * Copyright  2016 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.etl.mock.batch;

import co.cask.cdap.api.annotation.Name;
import co.cask.cdap.api.annotation.Plugin;
import co.cask.cdap.api.dataset.table.Put;
import co.cask.cdap.api.dataset.table.Table;
import co.cask.cdap.api.plugin.PluginConfig;
import co.cask.cdap.api.workflow.WorkflowNodeState;
import co.cask.cdap.etl.api.PipelineConfigurer;
import co.cask.cdap.etl.api.batch.BatchActionContext;
import co.cask.cdap.etl.api.batch.PostAction;
import co.cask.cdap.etl.proto.v2.ETLPlugin;
import com.google.common.collect.ImmutableMap;

import java.util.Map;

/**
 * Ending action writes the workflow's node states to a Table.
 */
@Plugin(type = PostAction.PLUGIN_TYPE)
@Name("TokenWriter")
public class NodeStatesAction extends PostAction {
    private final Conf conf;

    public NodeStatesAction(Conf conf) {
        this.conf = conf;
    }

    @Override
    public void configurePipeline(PipelineConfigurer pipelineConfigurer) {
        pipelineConfigurer.createDataset(conf.tableName, Table.class);
    }

    @Override
    public void run(BatchActionContext context) throws Exception {
        Table table = context.getDataset(conf.tableName);
        for (Map.Entry<String, WorkflowNodeState> entry : context.getNodeStates().entrySet()) {
            Put put = new Put(entry.getKey());
            WorkflowNodeState nodeState = entry.getValue();
            put.add("runid", nodeState.getRunId());
            put.add("nodeid", nodeState.getNodeId());
            put.add("status", nodeState.getNodeStatus().name());
            table.put(put);
        }
    }

    public static ETLPlugin getPlugin(String tableName) {
        return new ETLPlugin("TokenWriter", PostAction.PLUGIN_TYPE, ImmutableMap.of("tableName", tableName), null);
    }

    /**
     * Conf for the token writer.
     */
    public static class Conf extends PluginConfig {
        private String tableName;
    }
}