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co.cask.cdap.etl.mock.action.MockAction Maven / Gradle / Ivy
/*
* 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.action;
import co.cask.cdap.api.TxRunnable;
import co.cask.cdap.api.annotation.Macro;
import co.cask.cdap.api.annotation.Name;
import co.cask.cdap.api.annotation.Plugin;
import co.cask.cdap.api.common.Bytes;
import co.cask.cdap.api.data.DatasetContext;
import co.cask.cdap.api.dataset.table.Put;
import co.cask.cdap.api.dataset.table.Table;
import co.cask.cdap.api.plugin.PluginClass;
import co.cask.cdap.api.plugin.PluginConfig;
import co.cask.cdap.api.plugin.PluginPropertyField;
import co.cask.cdap.etl.api.PipelineConfigurer;
import co.cask.cdap.etl.api.action.Action;
import co.cask.cdap.etl.api.action.ActionContext;
import co.cask.cdap.etl.proto.v2.ETLPlugin;
import co.cask.cdap.test.DataSetManager;
import com.google.common.collect.ImmutableMap;
import java.util.HashMap;
import java.util.Map;
/**
* Mock sink that writes records to a Table and has a utility method for getting all records written.
*/
@Plugin(type = Action.PLUGIN_TYPE)
@Name("TableWriterAction")
public class MockAction extends Action {
private final Config config;
public static final PluginClass PLUGIN_CLASS = getPluginClass();
/**
* Config for the MockAction
*/
public static class Config extends PluginConfig {
private String tableName;
private String rowKey;
private String columnKey;
@Macro
private String value;
}
public MockAction(Config config) {
this.config = config;
}
@Override
public void configurePipeline(PipelineConfigurer pipelineConfigurer) throws IllegalArgumentException {
pipelineConfigurer.createDataset(config.tableName, Table.class);
}
@Override
public void run(ActionContext context) throws Exception {
context.execute(new TxRunnable() {
@Override
public void run(DatasetContext context) throws Exception {
Table table = context.getDataset(config.tableName);
Put put = new Put(config.rowKey);
put.add(config.columnKey, config.value);
table.put(put);
}
});
// Set the same value in the arguments as well.
context.getArguments().set(config.rowKey + config.columnKey, config.value);
}
public static ETLPlugin getPlugin(String tableName, String rowKey, String columnKey, String value) {
Map properties = ImmutableMap.of("tableName", tableName, "rowKey", rowKey, "columnKey", columnKey,
"value", value);
return new ETLPlugin("TableWriterAction", Action.PLUGIN_TYPE, properties, null);
}
private static PluginClass getPluginClass() {
Map properties = new HashMap<>();
properties.put("tableName", new PluginPropertyField("tableName", "", "string", true, false));
properties.put("rowKey", new PluginPropertyField("rowKey", "", "string", true, false));
properties.put("columnKey", new PluginPropertyField("columnKey", "", "string", true, false));
properties.put("value", new PluginPropertyField("value", "", "string", true, true));
return new PluginClass(Action.PLUGIN_TYPE, "TableWriterAction", "", MockAction.class.getName(),
"config", properties);
}
/**
* Read the value for the specified rowKey and columnKey.
*/
public static String readOutput(DataSetManager tableManager, String rowKey, String columnKey)
throws Exception {
Table table = tableManager.get();
return Bytes.toString(table.get(Bytes.toBytes(rowKey), Bytes.toBytes(columnKey)));
}
}
