org.apache.apex.api.plugin.DAGSetupPlugin Maven / Gradle / Ivy
/**
* 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.apex.api.plugin;
import org.apache.hadoop.classification.InterfaceStability.Evolving;
import org.apache.hadoop.conf.Configuration;
import com.datatorrent.api.DAG;
/**
* DAGSetupPlugin allows user provided code to run at various stages
* during DAG preparation. Currently following stages are supported
*
*
* - Before dag is populated
* - After dag is populated
* - Before dag is configured
* - After dag is configured
* - Before dag is validated
* - After dag is validated
*
*
* @since 3.6.0
*/
@Evolving
public interface DAGSetupPlugin extends Plugin
{
/**
* The context for the setup plugins
*/
@Evolving
interface Context extends PluginContext
{
DAG getDAG();
Configuration getConfiguration();
}
}