/**
* 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.oozie;
import org.apache.falcon.FalconException;
import org.apache.falcon.LifeCycle;
import org.apache.falcon.Tag;
import org.apache.falcon.entity.EntityUtil;
import org.apache.falcon.entity.FeedHelper;
import org.apache.falcon.entity.v0.cluster.Cluster;
import org.apache.falcon.entity.v0.feed.Feed;
import org.apache.falcon.oozie.workflow.WORKFLOWAPP;
import org.apache.falcon.workflow.WorkflowExecutionArgs;
import org.apache.hadoop.fs.Path;
import org.apache.commons.lang3.StringUtils;
import java.util.Properties;
/**
* Builds oozie workflow for Datasource import.
*/
public abstract class ImportWorkflowBuilder extends OozieOrchestrationWorkflowBuilder<Feed> {
public ImportWorkflowBuilder(Feed feed) {
super(feed, LifeCycle.IMPORT);
}
@Override public Properties build(Cluster cluster, Path buildPath) throws FalconException {
WORKFLOWAPP workflow = new WORKFLOWAPP();
String wfName = EntityUtil.getWorkflowName(Tag.IMPORT, entity).toString();
workflow.setName(wfName);
Properties p = getWorkflow(cluster, workflow, buildPath);
marshal(cluster, workflow, buildPath);
Properties props = FeedHelper.getFeedProperties(entity);
if (props == null) {
props = new Properties();
}
props.putAll(getProperties(buildPath, wfName));
if (createDefaultConfiguration(cluster) != null) {
props.putAll(createDefaultConfiguration(cluster));
}
if (FeedHelper.getUserWorkflowProperties(getLifecycle()) != null) {
props.putAll(FeedHelper.getUserWorkflowProperties(getLifecycle()));
}
props.put(WorkflowExecutionArgs.OUTPUT_FEED_NAMES.getName(), entity.getName());
props.put(WorkflowExecutionArgs.OUTPUT_NAMES.getName(), entity.getName());
props.put(WorkflowExecutionArgs.OUTPUT_FEED_PATHS.getName(),
String.format("${coord:dataOut('%s')}", FeedImportCoordinatorBuilder.IMPORT_DATAOUT_NAME));
props.put(WorkflowExecutionArgs.INPUT_FEED_NAMES.getName(), NONE);
props.put(WorkflowExecutionArgs.INPUT_FEED_PATHS.getName(), NONE);
props.setProperty("srcClusterName", "NA");
props.put(WorkflowExecutionArgs.CLUSTER_NAME.getName(), cluster.getName());
if (StringUtils.isEmpty(FeedHelper.getImportDatasourceName(
FeedHelper.getCluster(entity, cluster.getName())))) {
throw new FalconException("Datasource name is null or empty");
}
props.put(WorkflowExecutionArgs.DATASOURCE_NAME.getName(),
FeedHelper.getImportDatasourceName(FeedHelper.getCluster(entity, cluster.getName())));
props.putAll(p);
return props;
}
protected abstract Properties getWorkflow(Cluster cluster, WORKFLOWAPP workflow, Path buildPath)
throws FalconException;
}