Github user revans2 commented on a diff in the pull request: https://github.com/apache/storm/pull/2433#discussion_r173201619 --- Diff: storm-client/src/jvm/org/apache/storm/assignments/ILocalAssignmentsBackend.java --- @@ -0,0 +1,113 @@ +/** + * 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.storm.assignments; + +import java.util.List; +import java.util.Map; + +import org.apache.storm.generated.Assignment; + +/** + * Interface for storing local assignments. + */ +public interface ILocalAssignmentsBackend { + /** + * Decide if the assignments is synchronized from remote state-store. + */ + boolean isSynchronized(); + + /** + * Mark this backend as synchronized when sync work is done. + */ + void setSynchronized(); + + /** + * Initial function for creating backend. + * @param conf config + */ + void prepare(Map conf); + + /** + * Keep a storm assignment to local state or update old assignment. + * @param stormID storm runtime id + * @param assignment assignment as thrift + */ + void keepOrUpdateAssignment(String stormID, Assignment assignment); --- End diff -- nit: change `stormID` to `stormId` or `topologyId`.
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