/*
* Copyright © 2014 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.test;
import co.cask.cdap.api.metrics.RuntimeMetrics;
/**
* Instance for this class is for managing a running {@link co.cask.cdap.api.flow.Flow Flow}.
*/
public interface FlowManager extends ProgramManager<FlowManager> {
/**
* Changes the number of flowlet instances.
*
* @param flowletName Name of the flowlet.
* @param instances Number of instances to change to.
*/
void setFlowletInstances(String flowletName, int instances);
/**
* Gets the number of flowlet instances.
*
* @param flowletName Name of the flowlet.
*/
int getFlowletInstances(String flowletName);
/**
* @param flowletId Id of the flowlet.
* @return the flowlet metrics.
*/
RuntimeMetrics getFlowletMetrics(String flowletId);
}