ceresdb-protocol/src/main/java/com/ceresdb/Router.java

/*
 * 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 com.ceresdb;

import java.util.concurrent.CompletableFuture;

/**
 * A RPC router for CeresDB.
 *
 * @author jiachun.fjc
 */
public interface Router<Req, Resp> {

    /**
     * For a given request return the routing decision for the call.
     *
     * @param request request
     * @return a endpoint for the call
     */
    CompletableFuture<Resp> routeFor(final Req request);
}