src/DelayId.cc

   1
   2 /*
   3  * $Id: DelayId.cc,v 1.2 2003/02/12 06:10:58 robertc Exp $
   4  *
   5  * DEBUG: section 77    Delay Pools
   6  * AUTHOR: Robert Collins <robertc@squid-cache.org>
   7  * Based upon original delay pools code by
   8  *   David Luyer <david@luyer.net>
   9  *
  10  * SQUID Web Proxy Cache          http://www.squid-cache.org/
  11  * ----------------------------------------------------------
  12  *
  13  *  Squid is the result of efforts by numerous individuals from
  14  *  the Internet community; see the CONTRIBUTORS file for full
  15  *  details.   Many organizations have provided support for Squid's
  16  *  development; see the SPONSORS file for full details.  Squid is
  17  *  Copyrighted (C) 2001 by the Regents of the University of
  18  *  California; see the COPYRIGHT file for full details.  Squid
  19  *  incorporates software developed and/or copyrighted by other
  20  *  sources; see the CREDITS file for full details.
  21  *
  22  *  This program is free software; you can redistribute it and/or modify
  23  *  it under the terms of the GNU General Public License as published by
  24  *  the Free Software Foundation; either version 2 of the License, or
  25  *  (at your option) any later version.
  26  *
  27  *  This program is distributed in the hope that it will be useful,
  28  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  29  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  30  *  GNU General Public License for more details.
  31  *
  32  *  You should have received a copy of the GNU General Public License
  33  *  along with this program; if not, write to the Free Software
  34  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  35  *
  36  *
  37  * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org>
  38  */
  39
  40 #include "config.h"
  41
  42 #if DELAY_POOLS
  43 #include "squid.h"
  44 #include "DelayId.h"
  45 #include "client_side_request.h"
  46 #include "ACLChecklist.h"
  47 #include "DelayPools.h"
  48 #include "DelayPool.h"
  49 #include "HttpRequest.h"
  50 /*
  51 #include "DelaySpec.h"
  52 #include "StoreClient.h"
  53 #include "Store.h"
  54 #include "MemObject.h"
  55 #include "ACL.h"
  56 #include "Config.h"
  57 #include "DelayId.h"
  58 #include "Array.h"
  59 #include "String.h"
  60 #include "CommonPool.h"
  61 #include "CompositePoolNode.h"
  62 #include "DelayVector.h"
  63 #include "NullDelayId.h"
  64 #include "DelayBucket.h"
  65 */
  66
  67 DelayId::DelayId () : pool_ (0), compositeId(NULL)
  68 {
  69 }
  70
  71 DelayId::DelayId (unsigned short aPool) :
  72 pool_ (aPool), compositeId (NULL)
  73 {
  74 }
  75
  76 DelayId::~DelayId ()
  77 {
  78 }
  79
  80 void
  81 DelayId::compositePosition(DelayIdComposite::Pointer newPosition)
  82 {
  83     compositeId = newPosition;
  84 }
  85
  86 unsigned short
  87 DelayId::pool() const
  88 {
  89     return pool_;
  90 }
  91
  92 bool
  93 DelayId::operator == (DelayId const &rhs) const
  94 {
  95     /* Doesn't compare composites properly....
  96      * only use to test against default ID's
  97      */
  98     return pool_ == rhs.pool_ && compositeId == rhs.compositeId;
  99 }
 100
 101 DelayId::operator bool() const
 102 {
 103     return pool_ || compositeId.getRaw();
 104 }
 105
 106 DelayId
 107 DelayId::DelayClient(clientHttpRequest * http)
 108 {
 109     request_t *r;
 110     unsigned short pool;
 111     assert(http);
 112     r = http->request;
 113
 114     if (r->client_addr.s_addr == INADDR_BROADCAST) {
 115         debug(77, 2) ("delayClient: WARNING: Called with 'allones' address, ignoring\n");
 116         return DelayId();
 117     }
 118
 119     ACLChecklist ch;
 120     ch.src_addr = r->client_addr;
 121     ch.my_addr = r->my_addr;
 122     ch.my_port = r->my_port;
 123     if (http->conn)
 124         ch.conn(cbdataReference(http->conn));
 125     ch.request = requestLink(r);
 126     for (pool = 0; pool < DelayPools::pools(); pool++)
 127         if (DelayPools::delay_data[pool].theComposite().getRaw() &&
 128             aclCheckFast(DelayPools::delay_data[pool].access, &ch)) {
 129             DelayId result (pool + 1);
 130             result.compositePosition(DelayPools::delay_data[pool].theComposite()->id(ch.src_addr, r->auth_user_request));
 131             return result;
 132         }
 133     return DelayId();
 134 }
 135
 136 /*
 137  * this returns the number of bytes the client is permitted. it does not take
 138  * into account bytes already buffered - that is up to the caller.
 139  */
 140 int
 141 DelayId::bytesWanted(int min, int max) const
 142 {
 143     /* unlimited */
 144     if (! (*this))
 145         return XMAX(min, max);
 146
 147     /* limited */
 148     int nbytes = XMAX(min, max);
 149     if (compositeId.getRaw())
 150         nbytes = compositeId->bytesWanted(min, nbytes);
 151     return nbytes;
 152 }
 153
 154 /*
 155  * this records actual bytes recieved.  always recorded, even if the
 156  * class is disabled - it's more efficient to just do it than to do all
 157  * the checks.
 158  */
 159 void
 160 DelayId::bytesIn(int qty)
 161 {
 162     if (! (*this))
 163         return;
 164
 165     unsigned short tempPool = pool() - 1;
 166
 167     assert (tempPool != 0xFFFF);
 168
 169     if (compositeId.getRaw())
 170         compositeId->bytesIn(qty);
 171 }
 172 #endif
 173