| /** |
| * 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 backtype.storm.scheduler; |
| |
| import java.util.Map; |
| import java.util.Collection; |
| |
| public interface ISupervisor { |
| void prepare(Map stormConf, String schedulerLocalDir); |
| |
| // for mesos, this is {hostname}-{topologyid} |
| /** |
| * The id used for writing metadata into ZK. |
| */ |
| String getSupervisorId(); |
| |
| /** |
| * The id used in assignments. This combined with confirmAssigned decides what this supervisor is responsible for. The combination of this and |
| * getSupervisorId allows Nimbus to assign to a single machine and have multiple supervisors on that machine execute the assignment. This is important for |
| * achieving resource isolation. |
| */ |
| String getAssignmentId(); |
| |
| Object getMetadata(); |
| |
| boolean confirmAssigned(int port); |
| |
| // calls this before actually killing the worker locally... |
| // sends a "task finished" update |
| void killedWorker(int port); |
| |
| void assigned(Collection<Integer> ports); |
| } |