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b24880fe | 1 | /* |
b24880fe | 2 | * AUTHOR: Robert Collins |
3 | * | |
4 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
5 | * ---------------------------------------------------------- | |
6 | * | |
7 | * Squid is the result of efforts by numerous individuals from | |
8 | * the Internet community; see the CONTRIBUTORS file for full | |
9 | * details. Many organizations have provided support for Squid's | |
10 | * development; see the SPONSORS file for full details. Squid is | |
11 | * Copyrighted (C) 2001 by the Regents of the University of | |
12 | * California; see the COPYRIGHT file for full details. Squid | |
13 | * incorporates software developed and/or copyrighted by other | |
14 | * sources; see the CREDITS file for full details. | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
26ac0430 | 20 | * |
b24880fe | 21 | * This program is distributed in the hope that it will be useful, |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | * GNU General Public License for more details. | |
26ac0430 | 25 | * |
b24880fe | 26 | * You should have received a copy of the GNU General Public License |
27 | * along with this program; if not, write to the Free Software | |
28 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
29 | * | |
30 | * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org> | |
31 | */ | |
32 | ||
33 | #ifndef SQUID_PEERSELECTSTATE_H | |
34 | #define SQUID_PEERSELECTSTATE_H | |
35 | ||
cfd66529 | 36 | #include "Array.h" |
aa839030 | 37 | #include "cbdata.h" |
cfd66529 | 38 | #include "comm/Connection.h" |
96d89ea0 | 39 | #include "ip/Address.h" |
cfd66529 AJ |
40 | #include "PingData.h" |
41 | ||
42 | class HttpRequest; | |
43 | class StoreEntry; | |
44 | ||
93ad6f77 | 45 | typedef void PSC(Vector<Comm::Connection::Pointer> *, void *); |
cfd66529 | 46 | |
93ad6f77 | 47 | SQUIDCEXTERN void peerSelect(Vector<Comm::Connection::Pointer> *, HttpRequest *, StoreEntry *, PSC *, void *data); |
cfd66529 AJ |
48 | SQUIDCEXTERN void peerSelectInit(void); |
49 | ||
50 | /** | |
51 | * A peer which has been selected as a possible destination. | |
52 | * Listed as pointers here so as to prevent duplicates being added but will | |
53 | * be converted to a set of IP address path options before handing back out | |
54 | * to the caller. | |
55 | * | |
56 | * Certain connection flags and outgoing settings will also be looked up and | |
57 | * set based on the received request and peer settings before handing back. | |
58 | */ | |
59 | class FwdServer | |
60 | { | |
61 | public: | |
62 | peer *_peer; /* NULL --> origin server */ | |
63 | hier_code code; | |
64 | FwdServer *next; | |
65 | }; | |
b24880fe | 66 | |
67 | class ps_state | |
68 | { | |
69 | ||
70 | public: | |
71 | void *operator new(size_t); | |
72 | ps_state(); | |
73 | HttpRequest *request; | |
74 | StoreEntry *entry; | |
75 | int always_direct; | |
76 | int never_direct; | |
77 | int direct; | |
78 | PSC *callback; | |
79 | void *callback_data; | |
cfd66529 | 80 | |
93ad6f77 | 81 | Vector<Comm::Connection::Pointer> *paths; ///< the callers paths array. to be filled with our final results. |
cfd66529 AJ |
82 | FwdServer *servers; ///< temporary linked list of peers we will pass back. |
83 | ||
b24880fe | 84 | /* |
b7ac5457 | 85 | * Why are these Ip::Address instead of peer *? Because a |
b24880fe | 86 | * peer structure can become invalid during the peer selection |
87 | * phase, specifically after a reconfigure. Thus we need to lookup | |
88 | * the peer * based on the address when we are finally ready to | |
89 | * reference the peer structure. | |
90 | */ | |
91 | ||
b7ac5457 | 92 | Ip::Address first_parent_miss; |
b24880fe | 93 | |
b7ac5457 | 94 | Ip::Address closest_parent_miss; |
b24880fe | 95 | /* |
cc192b50 | 96 | * ->hit can be peer* because it should only be |
97 | * accessed during the thread when it is set | |
b24880fe | 98 | */ |
99 | peer *hit; | |
100 | peer_t hit_type; | |
b24880fe | 101 | ping_data ping; |
102 | ACLChecklist *acl_checklist; | |
aa839030 | 103 | private: |
104 | CBDATA_CLASS(ps_state); | |
b24880fe | 105 | }; |
106 | ||
107 | ||
108 | #endif /* SQUID_PEERSELECTSTATE_H */ |