| /* |
| * ==================================================================== |
| * 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| |
| package org.apache.hc.client5.http.impl.async; |
| |
| import java.io.InterruptedIOException; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import org.apache.hc.client5.http.HttpRoute; |
| import org.apache.hc.client5.http.async.AsyncExecRuntime; |
| import org.apache.hc.client5.http.config.RequestConfig; |
| import org.apache.hc.client5.http.impl.ConnPoolSupport; |
| import org.apache.hc.client5.http.impl.Operations; |
| import org.apache.hc.client5.http.nio.AsyncClientConnectionManager; |
| import org.apache.hc.client5.http.nio.AsyncConnectionEndpoint; |
| import org.apache.hc.client5.http.protocol.HttpClientContext; |
| import org.apache.hc.core5.concurrent.Cancellable; |
| import org.apache.hc.core5.concurrent.FutureCallback; |
| import org.apache.hc.core5.http.nio.AsyncClientExchangeHandler; |
| import org.apache.hc.core5.http.nio.AsyncPushConsumer; |
| import org.apache.hc.core5.http.nio.HandlerFactory; |
| import org.apache.hc.core5.http2.HttpVersionPolicy; |
| import org.apache.hc.core5.io.CloseMode; |
| import org.apache.hc.core5.reactor.ConnectionInitiator; |
| import org.apache.hc.core5.util.TimeValue; |
| import org.apache.hc.core5.util.Timeout; |
| import org.slf4j.Logger; |
| |
| class InternalHttpAsyncExecRuntime implements AsyncExecRuntime { |
| |
| private final Logger log; |
| private final AsyncClientConnectionManager manager; |
| private final ConnectionInitiator connectionInitiator; |
| private final HandlerFactory<AsyncPushConsumer> pushHandlerFactory; |
| private final HttpVersionPolicy versionPolicy; |
| private final AtomicReference<AsyncConnectionEndpoint> endpointRef; |
| private volatile boolean reusable; |
| private volatile Object state; |
| private volatile TimeValue validDuration; |
| |
| InternalHttpAsyncExecRuntime( |
| final Logger log, |
| final AsyncClientConnectionManager manager, |
| final ConnectionInitiator connectionInitiator, |
| final HandlerFactory<AsyncPushConsumer> pushHandlerFactory, |
| final HttpVersionPolicy versionPolicy) { |
| super(); |
| this.log = log; |
| this.manager = manager; |
| this.connectionInitiator = connectionInitiator; |
| this.pushHandlerFactory = pushHandlerFactory; |
| this.versionPolicy = versionPolicy; |
| this.endpointRef = new AtomicReference<>(null); |
| this.validDuration = TimeValue.NEG_ONE_MILLISECONDS; |
| } |
| |
| @Override |
| public boolean isEndpointAcquired() { |
| return endpointRef.get() != null; |
| } |
| |
| @Override |
| public Cancellable acquireEndpoint( |
| final String id, |
| final HttpRoute route, |
| final Object object, |
| final HttpClientContext context, |
| final FutureCallback<AsyncExecRuntime> callback) { |
| if (endpointRef.get() == null) { |
| state = object; |
| final RequestConfig requestConfig = context.getRequestConfig(); |
| final Timeout connectionRequestTimeout = requestConfig.getConnectionRequestTimeout(); |
| if (log.isDebugEnabled()) { |
| log.debug(id + ": acquiring endpoint (" + connectionRequestTimeout + ")"); |
| } |
| return Operations.cancellable(manager.lease( |
| id, |
| route, |
| object, |
| connectionRequestTimeout, |
| new FutureCallback<AsyncConnectionEndpoint>() { |
| |
| @Override |
| public void completed(final AsyncConnectionEndpoint connectionEndpoint) { |
| endpointRef.set(connectionEndpoint); |
| reusable = connectionEndpoint.isConnected(); |
| if (log.isDebugEnabled()) { |
| log.debug(id + ": acquired endpoint " + ConnPoolSupport.getId(connectionEndpoint)); |
| } |
| callback.completed(InternalHttpAsyncExecRuntime.this); |
| } |
| |
| @Override |
| public void failed(final Exception ex) { |
| callback.failed(ex); |
| } |
| |
| @Override |
| public void cancelled() { |
| callback.cancelled(); |
| } |
| })); |
| } |
| callback.completed(this); |
| return Operations.nonCancellable(); |
| } |
| |
| private void discardEndpoint(final AsyncConnectionEndpoint endpoint) { |
| try { |
| endpoint.close(CloseMode.IMMEDIATE); |
| if (log.isDebugEnabled()) { |
| log.debug(ConnPoolSupport.getId(endpoint) + ": endpoint closed"); |
| } |
| } finally { |
| if (log.isDebugEnabled()) { |
| log.debug(ConnPoolSupport.getId(endpoint) + ": discarding endpoint"); |
| } |
| manager.release(endpoint, null, TimeValue.ZERO_MILLISECONDS); |
| } |
| } |
| |
| @Override |
| public void releaseEndpoint() { |
| final AsyncConnectionEndpoint endpoint = endpointRef.getAndSet(null); |
| if (endpoint != null) { |
| if (reusable) { |
| if (log.isDebugEnabled()) { |
| log.debug(ConnPoolSupport.getId(endpoint) + ": releasing valid endpoint"); |
| } |
| manager.release(endpoint, state, validDuration); |
| } else { |
| discardEndpoint(endpoint); |
| } |
| } |
| } |
| |
| @Override |
| public void discardEndpoint() { |
| final AsyncConnectionEndpoint endpoint = endpointRef.getAndSet(null); |
| if (endpoint != null) { |
| discardEndpoint(endpoint); |
| } |
| } |
| |
| @Override |
| public boolean validateConnection() { |
| if (reusable) { |
| final AsyncConnectionEndpoint endpoint = endpointRef.get(); |
| return endpoint != null && endpoint.isConnected(); |
| } |
| final AsyncConnectionEndpoint endpoint = endpointRef.getAndSet(null); |
| if (endpoint != null) { |
| discardEndpoint(endpoint); |
| } |
| return false; |
| } |
| |
| AsyncConnectionEndpoint ensureValid() { |
| final AsyncConnectionEndpoint endpoint = endpointRef.get(); |
| if (endpoint == null) { |
| throw new IllegalStateException("Endpoint not acquired / already released"); |
| } |
| return endpoint; |
| } |
| |
| @Override |
| public boolean isEndpointConnected() { |
| final AsyncConnectionEndpoint endpoint = endpointRef.get(); |
| return endpoint != null && endpoint.isConnected(); |
| } |
| |
| @Override |
| public Cancellable connectEndpoint( |
| final HttpClientContext context, |
| final FutureCallback<AsyncExecRuntime> callback) { |
| final AsyncConnectionEndpoint endpoint = ensureValid(); |
| if (endpoint.isConnected()) { |
| callback.completed(this); |
| return Operations.nonCancellable(); |
| } |
| final RequestConfig requestConfig = context.getRequestConfig(); |
| final Timeout connectTimeout = requestConfig.getConnectTimeout(); |
| if (log.isDebugEnabled()) { |
| log.debug(ConnPoolSupport.getId(endpoint) + ": connecting endpoint (" + connectTimeout + ")"); |
| } |
| return Operations.cancellable(manager.connect( |
| endpoint, |
| connectionInitiator, |
| connectTimeout, |
| versionPolicy, |
| context, |
| new FutureCallback<AsyncConnectionEndpoint>() { |
| |
| @Override |
| public void completed(final AsyncConnectionEndpoint endpoint) { |
| if (log.isDebugEnabled()) { |
| log.debug(ConnPoolSupport.getId(endpoint) + ": endpoint connected"); |
| } |
| callback.completed(InternalHttpAsyncExecRuntime.this); |
| } |
| |
| @Override |
| public void failed(final Exception ex) { |
| callback.failed(ex); |
| } |
| |
| @Override |
| public void cancelled() { |
| callback.cancelled(); |
| } |
| |
| })); |
| |
| } |
| |
| @Override |
| public void upgradeTls(final HttpClientContext context) { |
| final AsyncConnectionEndpoint endpoint = ensureValid(); |
| final RequestConfig requestConfig = context.getRequestConfig(); |
| final Timeout connectTimeout = requestConfig.getConnectTimeout(); |
| if (TimeValue.isPositive(connectTimeout)) { |
| endpoint.setSocketTimeout(connectTimeout); |
| } |
| if (log.isDebugEnabled()) { |
| log.debug(ConnPoolSupport.getId(endpoint) + ": upgrading endpoint (" + connectTimeout + ")"); |
| } |
| manager.upgrade(endpoint, versionPolicy, context); |
| } |
| |
| @Override |
| public Cancellable execute( |
| final String id, final AsyncClientExchangeHandler exchangeHandler, final HttpClientContext context) { |
| final AsyncConnectionEndpoint endpoint = ensureValid(); |
| if (endpoint.isConnected()) { |
| if (log.isDebugEnabled()) { |
| log.debug(ConnPoolSupport.getId(endpoint) + ": start execution " + id); |
| } |
| final RequestConfig requestConfig = context.getRequestConfig(); |
| final Timeout responseTimeout = requestConfig.getResponseTimeout(); |
| if (responseTimeout != null) { |
| endpoint.setSocketTimeout(responseTimeout); |
| } |
| endpoint.execute(id, exchangeHandler, context); |
| if (context.getRequestConfig().isHardCancellationEnabled()) { |
| return new Cancellable() { |
| @Override |
| public boolean cancel() { |
| exchangeHandler.cancel(); |
| return true; |
| } |
| }; |
| } |
| } else { |
| connectEndpoint(context, new FutureCallback<AsyncExecRuntime>() { |
| |
| @Override |
| public void completed(final AsyncExecRuntime runtime) { |
| if (log.isDebugEnabled()) { |
| log.debug(ConnPoolSupport.getId(endpoint) + ": start execution " + id); |
| } |
| try { |
| endpoint.execute(id, exchangeHandler, pushHandlerFactory, context); |
| } catch (final RuntimeException ex) { |
| failed(ex); |
| } |
| } |
| |
| @Override |
| public void failed(final Exception ex) { |
| exchangeHandler.failed(ex); |
| } |
| |
| @Override |
| public void cancelled() { |
| exchangeHandler.failed(new InterruptedIOException()); |
| } |
| |
| }); |
| } |
| return Operations.nonCancellable(); |
| } |
| |
| @Override |
| public void markConnectionReusable(final Object newState, final TimeValue newValidDuration) { |
| reusable = true; |
| state = newState; |
| validDuration = newValidDuration; |
| } |
| |
| @Override |
| public void markConnectionNonReusable() { |
| reusable = false; |
| state = null; |
| validDuration = null; |
| } |
| |
| @Override |
| public AsyncExecRuntime fork() { |
| return new InternalHttpAsyncExecRuntime(log, manager, connectionInitiator, pushHandlerFactory, versionPolicy); |
| } |
| |
| } |