| /* |
| * 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.nifi.event.transport.netty; |
| |
| import io.netty.channel.Channel; |
| import io.netty.channel.EventLoopGroup; |
| import org.apache.nifi.event.transport.EventServer; |
| import org.apache.nifi.event.transport.configuration.ShutdownQuietPeriod; |
| import org.apache.nifi.event.transport.configuration.ShutdownTimeout; |
| |
| import java.time.Duration; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Netty Event Server |
| */ |
| class NettyEventServer implements EventServer { |
| private final EventLoopGroup group; |
| |
| private final Channel channel; |
| |
| private final Duration shutdownQuietPeriod; |
| |
| private final Duration shutdownTimeout; |
| |
| /** |
| * Netty Event Server with Event Loop Group and bound Channel |
| * |
| * @param group Event Loop Group |
| * @param channel Bound Channel |
| */ |
| NettyEventServer(final EventLoopGroup group, final Channel channel) { |
| this(group, channel, ShutdownQuietPeriod.DEFAULT.getDuration(), ShutdownTimeout.DEFAULT.getDuration()); |
| } |
| |
| /** |
| * Netty Event Server with Event Loop Group, bound Channel, and Shutdown Configuration |
| * |
| * @param group Event Loop Group |
| * @param channel Bound Channel |
| * @param quietPeriod server shutdown quiet period |
| * @param timeout server shutdown timeout |
| */ |
| NettyEventServer(final EventLoopGroup group, final Channel channel, final Duration quietPeriod, final Duration timeout) { |
| this.group = group; |
| this.channel = channel; |
| this.shutdownQuietPeriod = quietPeriod; |
| this.shutdownTimeout = timeout; |
| } |
| |
| /** |
| * Close Channel and shutdown Event Loop Group |
| */ |
| @Override |
| public void shutdown() { |
| try { |
| if (channel.isOpen()) { |
| channel.close().syncUninterruptibly(); |
| } |
| } finally { |
| group.shutdownGracefully(shutdownQuietPeriod.toMillis(), shutdownTimeout.toMillis(), TimeUnit.MILLISECONDS).syncUninterruptibly(); |
| } |
| } |
| } |