]>
Commit | Line | Data |
---|---|---|
aa839030 | 1 | /* |
f70aedc4 | 2 | * Copyright (C) 1996-2021 The Squid Software Foundation and contributors |
aa839030 | 3 | * |
bbc27441 AJ |
4 | * Squid software is distributed under GPLv2+ license and includes |
5 | * contributions from numerous individuals and organizations. | |
6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
aa839030 | 7 | */ |
8 | ||
9 | #ifndef SQUID_PEERDIGEST_H | |
10 | #define SQUID_PEERDIGEST_H | |
11 | ||
aa839030 | 12 | #if USE_CACHE_DIGESTS |
13 | ||
14 | #include "cbdata.h" | |
e8baef82 | 15 | #include "StatCounters.h" |
aa839030 | 16 | |
1b2f0924 FC |
17 | class Version |
18 | { | |
4d5904f7 | 19 | public: |
f53969cc SM |
20 | short int current; /* current version */ |
21 | short int required; /* minimal version that can safely handle current version */ | |
aa839030 | 22 | }; |
23 | ||
24 | /* digest control block; used for transmission and storage */ | |
25 | ||
26 | class StoreDigestCBlock | |
27 | { | |
26ac0430 | 28 | public: |
aa839030 | 29 | Version ver; |
30 | int capacity; | |
31 | int count; | |
32 | int del_count; | |
33 | int mask_size; | |
34 | unsigned char bits_per_entry; | |
35 | unsigned char hash_func_count; | |
36 | short int reserved_short; | |
37 | int reserved[32 - 6]; | |
38 | }; | |
39 | ||
73a4878a | 40 | class HttpRequest; |
c6983ec7 | 41 | class PeerDigest; |
73a4878a AJ |
42 | class store_client; |
43 | ||
1b2f0924 FC |
44 | class DigestFetchState |
45 | { | |
a44986dc AJ |
46 | CBDATA_CLASS(DigestFetchState); |
47 | ||
efdc32f4 | 48 | public: |
a44986dc AJ |
49 | DigestFetchState(PeerDigest *,HttpRequest *); |
50 | ~DigestFetchState(); | |
51 | ||
aa839030 | 52 | PeerDigest *pd; |
53 | StoreEntry *entry; | |
54 | StoreEntry *old_entry; | |
55 | store_client *sc; | |
56 | store_client *old_sc; | |
57 | HttpRequest *request; | |
58 | int offset; | |
831e953c | 59 | uint32_t mask_offset; |
aa839030 | 60 | time_t start_time; |
61 | time_t resp_time; | |
62 | time_t expires; | |
63 | ||
26ac0430 | 64 | struct { |
aa839030 | 65 | int msg; |
66 | int bytes; | |
a44986dc | 67 | } sent, recv; |
aa839030 | 68 | |
aa839030 | 69 | char buf[SM_PAGE_SIZE]; |
70 | ssize_t bufofs; | |
71 | digest_read_state_t state; | |
72 | }; | |
73 | ||
74 | class PeerDigest | |
75 | { | |
5c2f68b7 | 76 | CBDATA_CLASS(PeerDigest); |
aa839030 | 77 | |
78 | public: | |
b56b37cf AJ |
79 | PeerDigest(CachePeer *); |
80 | ~PeerDigest(); | |
81 | ||
82 | CachePeer *peer = nullptr; /**< pointer back to peer structure, argh */ | |
83 | CacheDigest *cd = nullptr; /**< actual digest structure */ | |
0e3b8c9f | 84 | SBuf host; ///< copy of peer->host |
b56b37cf | 85 | const char *req_result = nullptr; /**< text status of the last request */ |
aa839030 | 86 | |
26ac0430 | 87 | struct { |
b56b37cf AJ |
88 | bool needed = false; /**< there were requests for this digest */ |
89 | bool usable = false; /**< can be used for lookups */ | |
90 | bool requested = false; /**< in process of receiving [fresh] digest */ | |
3d0ac046 | 91 | } flags; |
aa839030 | 92 | |
26ac0430 | 93 | struct { |
aa839030 | 94 | /* all times are absolute unless augmented with _delay */ |
b56b37cf AJ |
95 | time_t initialized = 0; /* creation */ |
96 | time_t needed = 0; /* first lookup/use by a peer */ | |
97 | time_t next_check = 0; /* next scheduled check/refresh event */ | |
98 | time_t retry_delay = 0; /* delay before re-checking _invalid_ digest */ | |
99 | time_t requested = 0; /* requested a fresh copy of a digest */ | |
100 | time_t req_delay = 0; /* last request response time */ | |
101 | time_t received = 0; /* received the current copy of a digest */ | |
102 | time_t disabled = 0; /* disabled for good */ | |
3d0ac046 | 103 | } times; |
aa839030 | 104 | |
26ac0430 | 105 | struct { |
e8baef82 | 106 | CacheDigestGuessStats guess; |
b56b37cf | 107 | int used_count = 0; |
aa839030 | 108 | |
26ac0430 | 109 | struct { |
b56b37cf | 110 | int msgs = 0; |
a0864754 | 111 | ByteCounter kbytes; |
3d0ac046 HN |
112 | } sent, recv; |
113 | } stats; | |
aa839030 | 114 | }; |
115 | ||
116 | extern const Version CacheDigestVer; | |
e1f7507e | 117 | |
b56b37cf | 118 | void peerDigestCreate(CachePeer * p); |
8a648e8d FC |
119 | void peerDigestNeeded(PeerDigest * pd); |
120 | void peerDigestNotePeerGone(PeerDigest * pd); | |
121 | void peerDigestStatsReport(const PeerDigest * pd, StoreEntry * e); | |
fc54b8d2 | 122 | |
e1f7507e | 123 | #endif /* USE_CACHE_DIGESTS */ |
aa839030 | 124 | |
125 | #endif /* SQUID_PEERDIGEST_H */ | |
f53969cc | 126 |