src/ESIContext.cc

   1
   2 /*
   3  * $Id$
   4  *
   5  * DEBUG: section 86    ESI processing
   6  * AUTHOR: Robert Collins
   7  *
   8  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   9  * ----------------------------------------------------------
  10  *
  11  *  Squid is the result of efforts by numerous individuals from
  12  *  the Internet community; see the CONTRIBUTORS file for full
  13  *  details.   Many organizations have provided support for Squid's
  14  *  development; see the SPONSORS file for full details.  Squid is
  15  *  Copyrighted (C) 2001 by the Regents of the University of
  16  *  California; see the COPYRIGHT file for full details.  Squid
  17  *  incorporates software developed and/or copyrighted by other
  18  *  sources; see the CREDITS file for full details.
  19  *
  20  *  This program is free software; you can redistribute it and/or modify
  21  *  it under the terms of the GNU General Public License as published by
  22  *  the Free Software Foundation; either version 2 of the License, or
  23  *  (at your option) any later version.
  24  *
  25  *  This program is distributed in the hope that it will be useful,
  26  ;  but WITHOUT ANY WARRANTY; without even the implied warranty of
  27  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28  *  GNU General Public License for more details.
  29  *
  30  *  You should have received a copy of the GNU General Public License
  31  *  along with this program; if not, write to the Free Software
  32  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  33  *
  34  */
  35
  36 #include "squid.h"
  37
  38 /* MS Visual Studio Projects are monolithic, so we need the following
  39  * #if to exclude the ESI code from compile process when not needed.
  40  */
  41 #if (USE_SQUID_ESI == 1)
  42
  43 #include "ESIContext.h"
  44 #include "Store.h"
  45 #include "client_side_request.h"
  46
  47 void
  48 ESIContext::updateCachedAST()
  49 {
  50     assert (http);
  51     assert (http->storeEntry());
  52
  53     if (hasCachedAST()) {
  54         debugs(86, 5, "ESIContext::updateCachedAST: not updating AST cache for entry " <<
  55                http->storeEntry() << " from ESI Context " << this <<
  56                " as there is already a cached AST.");
  57
  58         return;
  59     }
  60
  61     ESIElement::Pointer treeToCache = tree->makeCacheable();
  62     debugs(86, 5, "ESIContext::updateCachedAST: Updating AST cache for entry " <<
  63            http->storeEntry() << " with current value " <<
  64            http->storeEntry()->cachedESITree.getRaw() << " to new value " <<
  65            treeToCache.getRaw());
  66
  67     if (http->storeEntry()->cachedESITree.getRaw())
  68         http->storeEntry()->cachedESITree->finish();
  69
  70     http->storeEntry()->cachedESITree = treeToCache;
  71
  72     treeToCache = NULL;
  73 }
  74
  75 bool
  76 ESIContext::hasCachedAST() const
  77 {
  78     assert (http);
  79     assert (http->storeEntry());
  80
  81     if (http->storeEntry()->cachedESITree.getRaw()) {
  82         debugs(86, 5, "ESIContext::hasCachedAST: " << this <<
  83                " - Cached AST present in store entry " << http->storeEntry() << ".");
  84         return true;
  85     } else {
  86         debugs(86, 5, "ESIContext::hasCachedAST: " << this <<
  87                " - Cached AST not present in store entry " << http->storeEntry() << ".");
  88         return false;
  89     }
  90 }
  91
  92 void
  93 ESIContext::getCachedAST()
  94 {
  95     if (cachedASTInUse)
  96         return;
  97
  98     assert (hasCachedAST());
  99
 100     assert (varState);
 101
 102     parserState.popAll();
 103
 104     tree = http->storeEntry()->cachedESITree->makeUsable (this, *varState);
 105
 106     cachedASTInUse = true;
 107 }
 108
 109 void
 110 ESIContext::setErrorMessage(char const *anError)
 111 {
 112     if (!errormessage)
 113         errormessage = xstrdup (anError);
 114 }
 115
 116 #endif /* USE_SQUID_ESI == 1 */