| /** |
| * 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.messaging; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.function.Supplier; |
| import org.apache.storm.grouping.Load; |
| import org.apache.storm.messaging.netty.BackPressureStatus; |
| |
| public interface IConnection extends AutoCloseable { |
| |
| /** |
| * Send load metrics to all downstream connections. |
| * |
| * @param taskToLoad a map from the task id to the load for that task. |
| */ |
| void sendLoadMetrics(Map<Integer, Double> taskToLoad); |
| |
| /** |
| * Sends the back pressure metrics to all downstream connections. |
| */ |
| void sendBackPressureStatus(BackPressureStatus bpStatus); |
| |
| /** |
| * send batch messages. |
| */ |
| |
| void send(Iterator<TaskMessage> msgs); |
| |
| /** |
| * Get the current load for the given tasks. |
| * |
| * @param tasks the tasks to look for. |
| * @return a Load for each of the tasks it knows about. |
| */ |
| Map<Integer, Load> getLoad(Collection<Integer> tasks); |
| |
| /** |
| * Get the port for this connection. |
| * |
| * @return The port this connection is using |
| */ |
| int getPort(); |
| |
| /** |
| * close this connection. |
| */ |
| @Override |
| void close(); |
| } |