| /* |
| * 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.channel; |
| |
| import org.apache.tinkerpop.gremlin.server.AbstractChannelizer; |
| import org.apache.tinkerpop.gremlin.server.Channelizer; |
| import org.apache.tinkerpop.gremlin.server.Settings; |
| import org.apache.tinkerpop.gremlin.server.auth.AllowAllAuthenticator; |
| import org.apache.tinkerpop.gremlin.server.handler.AbstractAuthenticationHandler; |
| import org.apache.tinkerpop.gremlin.server.handler.HttpBasicAuthenticationHandler; |
| import org.apache.tinkerpop.gremlin.server.handler.HttpGremlinEndpointHandler; |
| import io.netty.channel.ChannelPipeline; |
| import io.netty.handler.codec.http.HttpObjectAggregator; |
| import io.netty.handler.codec.http.HttpServerCodec; |
| import io.netty.handler.logging.LogLevel; |
| import io.netty.handler.logging.LoggingHandler; |
| import org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Constructs a {@link Channelizer} that exposes an HTTP endpoint in Gremlin Server. |
| * |
| * @author Stephen Mallette (http://stephen.genoprime.com) |
| */ |
| public class HttpChannelizer extends AbstractChannelizer { |
| private static final Logger logger = LoggerFactory.getLogger(HttpChannelizer.class); |
| |
| private HttpGremlinEndpointHandler httpGremlinEndpointHandler; |
| private AbstractAuthenticationHandler authenticationHandler; |
| |
| @Override |
| public void init(final ServerGremlinExecutor serverGremlinExecutor) { |
| super.init(serverGremlinExecutor); |
| httpGremlinEndpointHandler = new HttpGremlinEndpointHandler(serializers, gremlinExecutor, graphManager, settings); |
| } |
| |
| @Override |
| public void configure(final ChannelPipeline pipeline) { |
| if (logger.isDebugEnabled()) |
| pipeline.addLast(new LoggingHandler("log-io", LogLevel.DEBUG)); |
| |
| pipeline.addLast("http-server", new HttpServerCodec()); |
| |
| if (logger.isDebugEnabled()) |
| pipeline.addLast(new LoggingHandler("http-io", LogLevel.DEBUG)); |
| |
| pipeline.addLast(new HttpObjectAggregator(settings.maxContentLength)); |
| |
| if (authenticator != null) { |
| // Cannot add the same handler instance to multiple times unless |
| // it is marked as @Sharable, indicating a race condition will |
| // not occur. It may not be a safe assumption that the handler |
| // is sharable so create a new handler each time. |
| authenticationHandler = authenticator.getClass() == AllowAllAuthenticator.class ? |
| null : instantiateAuthenticationHandler(settings.authentication); |
| if (authenticationHandler != null) |
| pipeline.addLast(PIPELINE_AUTHENTICATOR, authenticationHandler); |
| } |
| |
| pipeline.addLast("http-gremlin-handler", httpGremlinEndpointHandler); |
| } |
| |
| private AbstractAuthenticationHandler instantiateAuthenticationHandler(final Settings.AuthenticationSettings authSettings) { |
| final String authHandlerClass = authSettings.authenticationHandler; |
| if (authHandlerClass == null) { |
| //Keep things backwards compatible |
| return new HttpBasicAuthenticationHandler(authenticator, authSettings); |
| } else { |
| return createAuthenticationHandler(authSettings); |
| } |
| } |
| |
| @Override |
| public void finalize(final ChannelPipeline pipeline) { |
| pipeline.remove(PIPELINE_OP_SELECTOR); |
| pipeline.remove(PIPELINE_OP_EXECUTOR); |
| } |
| } |