The Tor Browser: mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/conn/tsccm/ThreadSafeClientConnManager.java@b8a032363ba2 (annotated)

mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/conn/tsccm/ThreadSafeClientConnManager.java@b8a032363ba2 (annotated)

mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/conn/tsccm/ThreadSafeClientConnManager.java

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /*
  * ====================================================================
  *
  *  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 ch.boye.httpclientandroidlib.impl.conn.tsccm;
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import ch.boye.httpclientandroidlib.androidextra.HttpClientAndroidLog;
 /* LogFactory removed by HttpClient for Android script. */
 import ch.boye.httpclientandroidlib.annotation.ThreadSafe;
 import ch.boye.httpclientandroidlib.conn.params.ConnPerRouteBean;
 import ch.boye.httpclientandroidlib.conn.routing.HttpRoute;
 import ch.boye.httpclientandroidlib.conn.scheme.SchemeRegistry;
 import ch.boye.httpclientandroidlib.conn.ClientConnectionManager;
 import ch.boye.httpclientandroidlib.conn.ClientConnectionOperator;
 import ch.boye.httpclientandroidlib.conn.ClientConnectionRequest;
 import ch.boye.httpclientandroidlib.conn.ConnectionPoolTimeoutException;
 import ch.boye.httpclientandroidlib.conn.ManagedClientConnection;
 import ch.boye.httpclientandroidlib.conn.OperatedClientConnection;
 import ch.boye.httpclientandroidlib.params.HttpParams;
 import ch.boye.httpclientandroidlib.impl.conn.DefaultClientConnectionOperator;
 import ch.boye.httpclientandroidlib.impl.conn.SchemeRegistryFactory;
 /**
  * Manages a pool of {@link OperatedClientConnection client connections} and
  * is able to service connection requests from multiple execution threads.
  * Connections are pooled on a per route basis. A request for a route which
  * already the manager has persistent connections for available in the pool
  * will be services by leasing a connection from the pool rather than
  * creating a brand new connection.
  * <p>
  * ThreadSafeClientConnManager maintains a maximum limit of connection on
  * a per route basis and in total. Per default this implementation will
  * create no more than than 2 concurrent connections per given route
  * and no more 20 connections in total. For many real-world applications
  * these limits may prove too constraining, especially if they use HTTP
  * as a transport protocol for their services. Connection limits, however,
  * can be adjusted using HTTP parameters.
  *
  * @since 4.0
  */
 @ThreadSafe
 public class ThreadSafeClientConnManager implements ClientConnectionManager {
     public HttpClientAndroidLog log;
     /** The schemes supported by this connection manager. */
     protected final SchemeRegistry schemeRegistry; // @ThreadSafe
     @Deprecated
     protected final AbstractConnPool connectionPool;
     /** The pool of connections being managed. */
     protected final ConnPoolByRoute pool;
     /** The operator for opening and updating connections. */
     protected final ClientConnectionOperator connOperator; // DefaultClientConnectionOperator is @ThreadSafe
     protected final ConnPerRouteBean connPerRoute;
     /**
      * Creates a new thread safe connection manager.
      *
      * @param schreg    the scheme registry.
      */
     public ThreadSafeClientConnManager(final SchemeRegistry schreg) {
         this(schreg, -1, TimeUnit.MILLISECONDS);
     }
     /**
      * @since 4.1
      */
     public ThreadSafeClientConnManager() {
         this(SchemeRegistryFactory.createDefault());
     }
     /**
      * Creates a new thread safe connection manager.
      *
      * @param schreg    the scheme registry.
      * @param connTTL   max connection lifetime, <=0 implies "infinity"
      * @param connTTLTimeUnit   TimeUnit of connTTL
      *
      * @since 4.1
      */
     public ThreadSafeClientConnManager(final SchemeRegistry schreg,
             long connTTL, TimeUnit connTTLTimeUnit) {
         super();
         if (schreg == null) {
             throw new IllegalArgumentException("Scheme registry may not be null");
         }
         this.log = new HttpClientAndroidLog(getClass());
         this.schemeRegistry = schreg;
         this.connPerRoute = new ConnPerRouteBean();
         this.connOperator = createConnectionOperator(schreg);
         this.pool = createConnectionPool(connTTL, connTTLTimeUnit) ;
         this.connectionPool = this.pool;
     }
     /**
      * Creates a new thread safe connection manager.
      *
      * @param params    the parameters for this manager.
      * @param schreg    the scheme registry.
      *
      * @deprecated use {@link ThreadSafeClientConnManager#ThreadSafeClientConnManager(SchemeRegistry)}
      */
     @Deprecated
     public ThreadSafeClientConnManager(HttpParams params,
                                        SchemeRegistry schreg) {
         if (schreg == null) {
             throw new IllegalArgumentException("Scheme registry may not be null");
         }
         this.log = new HttpClientAndroidLog(getClass());
         this.schemeRegistry = schreg;
         this.connPerRoute = new ConnPerRouteBean();
         this.connOperator = createConnectionOperator(schreg);
         this.pool = (ConnPoolByRoute) createConnectionPool(params) ;
         this.connectionPool = this.pool;
     }
     @Override
     protected void finalize() throws Throwable {
         try {
             shutdown();
         } finally {
             super.finalize();
         }
     }
     /**
      * Hook for creating the connection pool.
      *
      * @return  the connection pool to use
      *
      * @deprecated use #createConnectionPool(long, TimeUnit))
      */
     @Deprecated
     protected AbstractConnPool createConnectionPool(final HttpParams params) {
         return new ConnPoolByRoute(connOperator, params);
     }
     /**
      * Hook for creating the connection pool.
      *
      * @return  the connection pool to use
      *
      * @since 4.1
      */
     protected ConnPoolByRoute createConnectionPool(long connTTL, TimeUnit connTTLTimeUnit) {
         return new ConnPoolByRoute(connOperator, connPerRoute, 20, connTTL, connTTLTimeUnit);
     }
     /**
      * Hook for creating the connection operator.
      * It is called by the constructor.
      * Derived classes can override this method to change the
      * instantiation of the operator.
      * The default implementation here instantiates
      * {@link DefaultClientConnectionOperator DefaultClientConnectionOperator}.
      *
      * @param schreg    the scheme registry.
      *
      * @return  the connection operator to use
      */
     protected ClientConnectionOperator
         createConnectionOperator(SchemeRegistry schreg) {
         return new DefaultClientConnectionOperator(schreg);// @ThreadSafe
     }
     public SchemeRegistry getSchemeRegistry() {
         return this.schemeRegistry;
     }
     public ClientConnectionRequest requestConnection(
             final HttpRoute route,
             final Object state) {
         final PoolEntryRequest poolRequest = pool.requestPoolEntry(
                 route, state);
         return new ClientConnectionRequest() {
             public void abortRequest() {
                 poolRequest.abortRequest();
             }
             public ManagedClientConnection getConnection(
                     long timeout, TimeUnit tunit) throws InterruptedException,
                     ConnectionPoolTimeoutException {
                 if (route == null) {
                     throw new IllegalArgumentException("Route may not be null.");
                 }
                 if (log.isDebugEnabled()) {
                     log.debug("Get connection: " + route + ", timeout = " + timeout);
                 }
                 BasicPoolEntry entry = poolRequest.getPoolEntry(timeout, tunit);
                 return new BasicPooledConnAdapter(ThreadSafeClientConnManager.this, entry);
             }
         };
     }
     public void releaseConnection(ManagedClientConnection conn, long validDuration, TimeUnit timeUnit) {
         if (!(conn instanceof BasicPooledConnAdapter)) {
             throw new IllegalArgumentException
                 ("Connection class mismatch, " +
                  "connection not obtained from this manager.");
         }
         BasicPooledConnAdapter hca = (BasicPooledConnAdapter) conn;
         if ((hca.getPoolEntry() != null) && (hca.getManager() != this)) {
             throw new IllegalArgumentException
                 ("Connection not obtained from this manager.");
         }
         synchronized (hca) {
             BasicPoolEntry entry = (BasicPoolEntry) hca.getPoolEntry();
             if (entry == null) {
                 return;
             }
             try {
                 // make sure that the response has been read completely
                 if (hca.isOpen() && !hca.isMarkedReusable()) {
                     // In MTHCM, there would be a call to
                     // SimpleHttpConnectionManager.finishLastResponse(conn);
                     // Consuming the response is handled outside in 4.0.
                     // make sure this connection will not be re-used
                     // Shut down rather than close, we might have gotten here
                     // because of a shutdown trigger.
                     // Shutdown of the adapter also clears the tracked route.
                     hca.shutdown();
                 }
             } catch (IOException iox) {
                 if (log.isDebugEnabled())
                     log.debug("Exception shutting down released connection.",
                               iox);
             } finally {
                 boolean reusable = hca.isMarkedReusable();
                 if (log.isDebugEnabled()) {
                     if (reusable) {
                         log.debug("Released connection is reusable.");
                     } else {
                         log.debug("Released connection is not reusable.");
                     }
                 }
                 hca.detach();
                 pool.freeEntry(entry, reusable, validDuration, timeUnit);
             }
         }
     }
     public void shutdown() {
         log.debug("Shutting down");
         pool.shutdown();
     }
     /**
      * Gets the total number of pooled connections for the given route.
      * This is the total number of connections that have been created and
      * are still in use by this connection manager for the route.
      * This value will not exceed the maximum number of connections per host.
      *
      * @param route     the route in question
      *
      * @return  the total number of pooled connections for that route
      */
     public int getConnectionsInPool(final HttpRoute route) {
         return pool.getConnectionsInPool(route);
     }
     /**
      * Gets the total number of pooled connections.  This is the total number of
      * connections that have been created and are still in use by this connection
      * manager.  This value will not exceed the maximum number of connections
      * in total.
      *
      * @return the total number of pooled connections
      */
     public int getConnectionsInPool() {
         return pool.getConnectionsInPool();
     }
     public void closeIdleConnections(long idleTimeout, TimeUnit tunit) {
         if (log.isDebugEnabled()) {
             log.debug("Closing connections idle longer than " + idleTimeout + " " + tunit);
         }
         pool.closeIdleConnections(idleTimeout, tunit);
     }
     public void closeExpiredConnections() {
         log.debug("Closing expired connections");
         pool.closeExpiredConnections();
     }
     /**
      * since 4.1
      */
     public int getMaxTotal() {
         return pool.getMaxTotalConnections();
     }
     /**
      * since 4.1
      */
     public void setMaxTotal(int max) {
         pool.setMaxTotalConnections(max);
     }
     /**
      * @since 4.1
      */
     public int getDefaultMaxPerRoute() {
         return connPerRoute.getDefaultMaxPerRoute();
     }
     /**
      * @since 4.1
      */
     public void setDefaultMaxPerRoute(int max) {
         connPerRoute.setDefaultMaxPerRoute(max);
     }
     /**
      * @since 4.1
      */
     public int getMaxForRoute(final HttpRoute route) {
         return connPerRoute.getMaxForRoute(route);
     }
     /**
      * @since 4.1
      */
     public void setMaxForRoute(final HttpRoute route, int max) {
         connPerRoute.setMaxForRoute(route, max);
     }
 }

The Tor Browser / annotate

mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/conn/tsccm/ThreadSafeClientConnManager.java@b8a032363ba2 (annotated)

mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/conn/tsccm/ThreadSafeClientConnManager.java