| /* |
| * 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.tinkerpop.gremlin.server; |
| |
| import io.netty.channel.ChannelHandler; |
| import org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor; |
| |
| /** |
| * An interface that makes it possible to plugin different Netty pipelines to Gremlin Server, enabling the use of |
| * different protocols, mapper security and other such functions. A {@code Channelizer} implementation can be |
| * configured in Gremlin Server with the {@code channelizer} setting in the configuration file. |
| * |
| * @author Stephen Mallette (http://stephen.genoprime.com) |
| * @see AbstractChannelizer |
| */ |
| public interface Channelizer extends ChannelHandler { |
| |
| /** |
| * This method is called just after the {@code Channelizer} is initialized. |
| */ |
| public void init(final ServerGremlinExecutor serverGremlinExecutor); |
| |
| /** |
| * Create a message to send to seemingly dead clients to see if they respond back. The message sent will be |
| * dependent on the implementation. For example, a websocket implementation would create a "ping" message. |
| * This method will only be used if {@link #supportsIdleMonitor()} is {@code true}. |
| */ |
| public default Object createIdleDetectionMessage() { |
| return null; |
| } |
| |
| /** |
| * Determines if the channelizer supports a method for keeping the connection alive and auto-closing zombie |
| * channels. |
| */ |
| public default boolean supportsIdleMonitor() { |
| return false; |
| } |
| } |