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b67e2c8c | 1 | |
2 | /* | |
262a0e14 | 3 | * $Id$ |
b67e2c8c | 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. | |
26ac0430 | 26 | * |
b67e2c8c | 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. | |
26ac0430 | 31 | * |
b67e2c8c | 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 | ||
454e8283 | 42 | /* MS Visual Studio Projects are monolithic, so we need the following |
43 | * #if to exclude the delay pools code from compile process when not needed. | |
44 | */ | |
9a0a18de | 45 | #if USE_DELAY_POOLS |
454e8283 | 46 | |
b67e2c8c | 47 | #include "squid.h" |
48 | #include "DelayId.h" | |
49 | #include "client_side_request.h" | |
c0941a6a | 50 | #include "acl/FilledChecklist.h" |
b67e2c8c | 51 | #include "DelayPools.h" |
52 | #include "DelayPool.h" | |
8000a965 | 53 | #include "HttpRequest.h" |
a46d2c0e | 54 | #include "CommRead.h" |
55 | ||
56 | DelayId::DelayId () : pool_ (0), compositeId(NULL), markedAsNoDelay(false) | |
62e76326 | 57 | {} |
b67e2c8c | 58 | |
62e76326 | 59 | DelayId::DelayId (unsigned short aPool) : |
a46d2c0e | 60 | pool_ (aPool), compositeId (NULL), markedAsNoDelay (false) |
b67e2c8c | 61 | { |
bf8fe701 | 62 | debugs(77, 3, "DelayId::DelayId: Pool " << aPool << "u"); |
b67e2c8c | 63 | } |
64 | ||
65 | DelayId::~DelayId () | |
62e76326 | 66 | {} |
b67e2c8c | 67 | |
68 | void | |
69 | DelayId::compositePosition(DelayIdComposite::Pointer newPosition) | |
70 | { | |
71 | compositeId = newPosition; | |
72 | } | |
73 | ||
74 | unsigned short | |
75 | DelayId::pool() const | |
76 | { | |
77 | return pool_; | |
78 | } | |
79 | ||
80 | bool | |
81 | DelayId::operator == (DelayId const &rhs) const | |
82 | { | |
83 | /* Doesn't compare composites properly.... | |
26ac0430 | 84 | * only use to test against default ID's |
b67e2c8c | 85 | */ |
86 | return pool_ == rhs.pool_ && compositeId == rhs.compositeId; | |
87 | } | |
88 | ||
62e76326 | 89 | DelayId::operator bool() const |
b67e2c8c | 90 | { |
91 | return pool_ || compositeId.getRaw(); | |
92 | } | |
93 | ||
7ec8c6a2 | 94 | /* create a delay Id for a given request */ |
b67e2c8c | 95 | DelayId |
59a1efb2 | 96 | DelayId::DelayClient(ClientHttpRequest * http) |
b67e2c8c | 97 | { |
190154cf | 98 | HttpRequest *r; |
b67e2c8c | 99 | unsigned short pool; |
100 | assert(http); | |
101 | r = http->request; | |
102 | ||
cc192b50 | 103 | if (r->client_addr.IsNoAddr()) { |
104 | debugs(77, 2, "delayClient: WARNING: Called with 'NO_ADDR' address, ignoring"); | |
62e76326 | 105 | return DelayId(); |
b67e2c8c | 106 | } |
107 | ||
26ac0430 | 108 | for (pool = 0; pool < DelayPools::pools(); pool++) { |
b50e327b AJ |
109 | |
110 | /* pools require explicit 'allow' to assign a client into them */ | |
111 | if (!DelayPools::delay_data[pool].access) { | |
112 | debugs(77, DBG_IMPORTANT, "delay_pool " << pool << | |
113 | " has no delay_access configured. This means that no clients will ever use it."); | |
114 | continue; | |
115 | } | |
116 | ||
c0941a6a | 117 | ACLFilledChecklist ch(DelayPools::delay_data[pool].access, r, NULL); |
3d674977 | 118 | #if FOLLOW_X_FORWARDED_FOR |
26ac0430 AJ |
119 | if (Config.onoff.delay_pool_uses_indirect_client) |
120 | ch.src_addr = r->indirect_client_addr; | |
121 | else | |
122 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
123 | ch.src_addr = r->client_addr; | |
7ec8c6a2 | 124 | ch.my_addr = r->my_addr; |
62e76326 | 125 | |
4d3a24ca | 126 | if (http->getConn() != NULL) |
a2ac85d9 | 127 | ch.conn(http->getConn()); |
62e76326 | 128 | |
b50e327b AJ |
129 | if (DelayPools::delay_data[pool].theComposite().getRaw() && ch.fastCheck()) { |
130 | ||
62e76326 | 131 | DelayId result (pool + 1); |
1e5562e3 | 132 | CompositePoolNode::CompositeSelectionDetails details; |
133 | details.src_addr = ch.src_addr; | |
134 | details.user = r->auth_user_request; | |
135 | details.tag = r->tag; | |
136 | result.compositePosition(DelayPools::delay_data[pool].theComposite()->id(details)); | |
62e76326 | 137 | return result; |
138 | } | |
7ec8c6a2 | 139 | } |
140 | ||
b67e2c8c | 141 | return DelayId(); |
142 | } | |
143 | ||
a46d2c0e | 144 | void |
145 | DelayId::setNoDelay(bool const newValue) | |
146 | { | |
147 | markedAsNoDelay = newValue; | |
148 | } | |
149 | ||
b67e2c8c | 150 | /* |
151 | * this returns the number of bytes the client is permitted. it does not take | |
152 | * into account bytes already buffered - that is up to the caller. | |
153 | */ | |
154 | int | |
a748a390 | 155 | DelayId::bytesWanted(int minimum, int maximum) const |
b67e2c8c | 156 | { |
157 | /* unlimited */ | |
62e76326 | 158 | |
a46d2c0e | 159 | if (! (*this) || markedAsNoDelay) |
a748a390 | 160 | return max(minimum, maximum); |
62e76326 | 161 | |
b67e2c8c | 162 | /* limited */ |
a748a390 | 163 | int nbytes = max(minimum, maximum); |
62e76326 | 164 | |
4d3a24ca | 165 | if (compositeId != NULL) |
a748a390 | 166 | nbytes = compositeId->bytesWanted(minimum, nbytes); |
62e76326 | 167 | |
b67e2c8c | 168 | return nbytes; |
169 | } | |
170 | ||
171 | /* | |
2324cda2 | 172 | * this records actual bytes received. always recorded, even if the |
b67e2c8c | 173 | * class is disabled - it's more efficient to just do it than to do all |
174 | * the checks. | |
175 | */ | |
176 | void | |
177 | DelayId::bytesIn(int qty) | |
178 | { | |
179 | if (! (*this)) | |
62e76326 | 180 | return; |
b67e2c8c | 181 | |
a46d2c0e | 182 | if (markedAsNoDelay) |
183 | return; | |
184 | ||
e4a67a80 | 185 | assert ((unsigned short)(pool() - 1) != 0xFFFF); |
b67e2c8c | 186 | |
4d3a24ca | 187 | if (compositeId != NULL) |
62e76326 | 188 | compositeId->bytesIn(qty); |
b67e2c8c | 189 | } |
62e76326 | 190 | |
a46d2c0e | 191 | void |
192 | DelayId::delayRead(DeferredRead const &aRead) | |
193 | { | |
4d3a24ca | 194 | assert (compositeId != NULL); |
a46d2c0e | 195 | compositeId->delayRead(aRead); |
b67e2c8c | 196 | |
a46d2c0e | 197 | } |
454e8283 | 198 | |
9a0a18de | 199 | #endif /* USE_DELAY_POOLS */ |