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164f7660 | 1 | |
30a4f2a8 | 2 | /* |
262a0e14 | 3 | * $Id$ |
30a4f2a8 | 4 | * |
8638fc66 | 5 | * DEBUG: section 20 Storage Manager |
30a4f2a8 | 6 | * AUTHOR: Harvest Derived |
7 | * | |
2b6662ba | 8 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
e25c139f | 9 | * ---------------------------------------------------------- |
30a4f2a8 | 10 | * |
2b6662ba | 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. | |
30a4f2a8 | 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. | |
26ac0430 | 24 | * |
30a4f2a8 | 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. | |
26ac0430 | 29 | * |
30a4f2a8 | 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 | |
cbdec147 | 32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 33 | * |
c943f331 | 34 | */ |
090089c4 | 35 | |
f09f5b26 | 36 | #include "squid.h" |
a553a5a3 | 37 | #include "event.h" |
04f55905 | 38 | #include "fde.h" |
e6ccf245 | 39 | #include "Store.h" |
8822ebee | 40 | #include "mgr/Registration.h" |
e6ccf245 | 41 | #include "StoreClient.h" |
528b2c61 | 42 | #include "stmem.h" |
43 | #include "HttpReply.h" | |
44 | #include "HttpRequest.h" | |
45 | #include "MemObject.h" | |
46 | #include "mem_node.h" | |
47 | #include "StoreMeta.h" | |
d3b3ab85 | 48 | #include "SwapDir.h" |
b67e2c8c | 49 | #if DELAY_POOLS |
50 | #include "DelayPools.h" | |
51 | #endif | |
91caca83 | 52 | #include "Stack.h" |
985c86bc | 53 | #include "SquidTime.h" |
4b981814 | 54 | #include "swap_log_op.h" |
8822ebee | 55 | #include "mgr/StoreIoAction.h" |
090089c4 | 56 | |
528b2c61 | 57 | static STMCB storeWriteComplete; |
58 | ||
090089c4 | 59 | #define REBUILD_TIMESTAMP_DELTA_MAX 2 |
227fbb74 | 60 | |
c21ad0f5 | 61 | #define STORE_IN_MEM_BUCKETS (229) |
090089c4 | 62 | |
4b981814 AJ |
63 | |
64 | /** \todo Convert these string constants to enum string-arrays generated */ | |
65 | ||
26ac0430 AJ |
66 | const char *memStatusStr[] = { |
67 | "NOT_IN_MEMORY", | |
68 | "IN_MEMORY" | |
69 | }; | |
70 | ||
71 | const char *pingStatusStr[] = { | |
72 | "PING_NONE", | |
73 | "PING_WAITING", | |
74 | "PING_DONE" | |
75 | }; | |
76 | ||
77 | const char *storeStatusStr[] = { | |
78 | "STORE_OK", | |
79 | "STORE_PENDING" | |
80 | }; | |
81 | ||
82 | const char *swapStatusStr[] = { | |
83 | "SWAPOUT_NONE", | |
84 | "SWAPOUT_WRITING", | |
85 | "SWAPOUT_DONE" | |
86 | }; | |
9dfb6c1c | 87 | |
25b6a907 | 88 | |
89 | /* | |
90 | * This defines an repl type | |
91 | */ | |
92 | ||
93 | typedef struct _storerepl_entry storerepl_entry_t; | |
94 | ||
26ac0430 | 95 | struct _storerepl_entry { |
25b6a907 | 96 | const char *typestr; |
97 | REMOVALPOLICYCREATE *create; | |
98 | }; | |
99 | ||
100 | static storerepl_entry_t *storerepl_list = NULL; | |
101 | ||
102 | ||
e3ef2b09 | 103 | /* |
104 | * local function prototypes | |
105 | */ | |
007b8be4 | 106 | static int getKeyCounter(void); |
8423ff74 | 107 | static OBJH storeCheckCachableStats; |
e42d5181 | 108 | static EVH storeLateRelease; |
a21fbb54 | 109 | |
e3ef2b09 | 110 | /* |
111 | * local variables | |
112 | */ | |
91caca83 | 113 | static Stack<StoreEntry*> LateReleaseStack; |
04eb0689 | 114 | MemAllocator *StoreEntry::pool = NULL; |
e6ccf245 | 115 | |
c8f4eac4 | 116 | StorePointer Store::CurrentRoot = NULL; |
117 | ||
118 | void | |
119 | Store::Root(Store * aRoot) | |
120 | { | |
121 | CurrentRoot = aRoot; | |
122 | } | |
123 | ||
124 | void | |
125 | Store::Root(StorePointer aRoot) | |
126 | { | |
127 | Root(aRoot.getRaw()); | |
128 | } | |
129 | ||
130 | void | |
131 | Store::Stats(StoreEntry * output) | |
132 | { | |
133 | assert (output); | |
134 | Root().stat(*output); | |
135 | } | |
136 | ||
137 | void | |
138 | Store::create() | |
139 | {} | |
140 | ||
141 | void | |
142 | Store::diskFull() | |
143 | {} | |
144 | ||
145 | void | |
146 | Store::sync() | |
147 | {} | |
148 | ||
149 | void | |
150 | Store::unlink (StoreEntry &anEntry) | |
151 | { | |
152 | fatal("Store::unlink on invalid Store\n"); | |
153 | } | |
154 | ||
e6ccf245 | 155 | void * |
3b13a8fd | 156 | StoreEntry::operator new (size_t bytecount) |
e6ccf245 | 157 | { |
3b13a8fd | 158 | assert (bytecount == sizeof (StoreEntry)); |
62e76326 | 159 | |
e6ccf245 | 160 | if (!pool) { |
04eb0689 | 161 | pool = memPoolCreate ("StoreEntry", bytecount); |
b001e822 | 162 | pool->setChunkSize(2048 * 1024); |
e6ccf245 | 163 | } |
62e76326 | 164 | |
b001e822 | 165 | return pool->alloc(); |
e6ccf245 | 166 | } |
167 | ||
168 | void | |
3b13a8fd | 169 | StoreEntry::operator delete (void *address) |
e6ccf245 | 170 | { |
dc47f531 | 171 | pool->freeOne(address); |
e6ccf245 | 172 | } |
173 | ||
5ed72359 | 174 | void |
175 | StoreEntry::makePublic() | |
176 | { | |
177 | /* This object can be cached for a long time */ | |
178 | ||
179 | if (EBIT_TEST(flags, ENTRY_CACHABLE)) | |
d88e3c49 | 180 | setPublicKey(); |
5ed72359 | 181 | } |
182 | ||
183 | void | |
184 | StoreEntry::makePrivate() | |
185 | { | |
186 | /* This object should never be cached at all */ | |
d88e3c49 | 187 | expireNow(); |
188 | releaseRequest(); /* delete object when not used */ | |
189 | /* releaseRequest clears ENTRY_CACHABLE flag */ | |
5ed72359 | 190 | } |
191 | ||
192 | void | |
193 | StoreEntry::cacheNegatively() | |
194 | { | |
195 | /* This object may be negatively cached */ | |
d88e3c49 | 196 | negativeCache(); |
5ed72359 | 197 | |
198 | if (EBIT_TEST(flags, ENTRY_CACHABLE)) | |
d88e3c49 | 199 | setPublicKey(); |
5ed72359 | 200 | } |
201 | ||
e6ccf245 | 202 | size_t |
3b13a8fd | 203 | StoreEntry::inUseCount() |
e6ccf245 | 204 | { |
205 | if (!pool) | |
62e76326 | 206 | return 0; |
9f9e06f3 | 207 | return pool->getInUseCount(); |
e6ccf245 | 208 | } |
209 | ||
332dafa2 | 210 | const char * |
3b13a8fd | 211 | StoreEntry::getMD5Text() const |
332dafa2 | 212 | { |
213 | return storeKeyText((const cache_key *)key); | |
214 | } | |
215 | ||
a46d2c0e | 216 | #include "comm.h" |
217 | ||
218 | void | |
219 | StoreEntry::DeferReader(void *theContext, CommRead const &aRead) | |
e6ccf245 | 220 | { |
a46d2c0e | 221 | StoreEntry *anEntry = (StoreEntry *)theContext; |
222 | anEntry->delayAwareRead(aRead.fd, | |
223 | aRead.buf, | |
224 | aRead.len, | |
65517dc8 | 225 | aRead.callback); |
e6ccf245 | 226 | } |
66cedb85 | 227 | |
a46d2c0e | 228 | void |
65517dc8 | 229 | StoreEntry::delayAwareRead(int fd, char *buf, int len, AsyncCall::Pointer callback) |
a46d2c0e | 230 | { |
231 | size_t amountToRead = bytesWanted(Range<size_t>(0, len)); | |
232 | /* sketch: readdeferer* = getdeferer. | |
65517dc8 | 233 | * ->deferRead (fd, buf, len, callback, DelayAwareRead, this) |
a46d2c0e | 234 | */ |
235 | ||
236 | if (amountToRead == 0) { | |
237 | assert (mem_obj); | |
238 | /* read ahead limit */ | |
239 | /* Perhaps these two calls should both live in MemObject */ | |
a5f42284 | 240 | #if DELAY_POOLS |
a46d2c0e | 241 | |
242 | if (!mem_obj->readAheadPolicyCanRead()) { | |
a5f42284 | 243 | #endif |
65517dc8 | 244 | mem_obj->delayRead(DeferredRead(DeferReader, this, CommRead(fd, buf, len, callback))); |
a46d2c0e | 245 | return; |
a5f42284 | 246 | #if DELAY_POOLS |
247 | ||
a46d2c0e | 248 | } |
249 | ||
250 | /* delay id limit */ | |
65517dc8 | 251 | mem_obj->mostBytesAllowed().delayRead(DeferredRead(DeferReader, this, CommRead(fd, buf, len, callback))); |
a46d2c0e | 252 | |
253 | return; | |
a5f42284 | 254 | |
255 | #endif | |
256 | ||
a46d2c0e | 257 | } |
258 | ||
65517dc8 | 259 | comm_read(fd, buf, amountToRead, callback); |
a46d2c0e | 260 | } |
261 | ||
262 | size_t | |
263 | StoreEntry::bytesWanted (Range<size_t> const aRange) const | |
528b2c61 | 264 | { |
a46d2c0e | 265 | assert (aRange.size()); |
62e76326 | 266 | |
528b2c61 | 267 | if (mem_obj == NULL) |
a46d2c0e | 268 | return aRange.end - 1; |
62e76326 | 269 | |
bc87dc25 | 270 | #if URL_CHECKSUM_DEBUG |
62e76326 | 271 | |
528b2c61 | 272 | mem_obj->checkUrlChecksum(); |
62e76326 | 273 | |
528b2c61 | 274 | #endif |
62e76326 | 275 | |
a46d2c0e | 276 | /* Always read *something* here - we haven't got the header yet */ |
277 | if (EBIT_TEST(flags, ENTRY_FWD_HDR_WAIT)) | |
278 | return aRange.end - 1; | |
62e76326 | 279 | |
a46d2c0e | 280 | if (!mem_obj->readAheadPolicyCanRead()) |
281 | return 0; | |
62e76326 | 282 | |
a46d2c0e | 283 | return mem_obj->mostBytesWanted(aRange.end - 1); |
284 | } | |
62e76326 | 285 | |
a46d2c0e | 286 | bool |
287 | StoreEntry::checkDeferRead(int fd) const | |
288 | { | |
289 | return (bytesWanted(Range<size_t>(0,INT_MAX)) == 0); | |
290 | } | |
62e76326 | 291 | |
a46d2c0e | 292 | void |
293 | StoreEntry::setNoDelay (bool const newValue) | |
294 | { | |
295 | if (mem_obj) | |
296 | mem_obj->setNoDelay(newValue); | |
528b2c61 | 297 | } |
bc87dc25 | 298 | |
528b2c61 | 299 | store_client_t |
300 | StoreEntry::storeClientType() const | |
227fbb74 | 301 | { |
7d31d5fa | 302 | /* The needed offset isn't in memory |
303 | * XXX TODO: this is wrong for range requests | |
304 | * as the needed offset may *not* be 0, AND | |
305 | * offset 0 in the memory object is the HTTP headers. | |
306 | */ | |
307 | ||
528b2c61 | 308 | if (mem_obj->inmem_lo) |
62e76326 | 309 | return STORE_DISK_CLIENT; |
310 | ||
528b2c61 | 311 | if (EBIT_TEST(flags, ENTRY_ABORTED)) { |
62e76326 | 312 | /* I don't think we should be adding clients to aborted entries */ |
bf8fe701 | 313 | debugs(20, 1, "storeClientType: adding to ENTRY_ABORTED entry"); |
62e76326 | 314 | return STORE_MEM_CLIENT; |
528b2c61 | 315 | } |
62e76326 | 316 | |
528b2c61 | 317 | if (store_status == STORE_OK) { |
7d31d5fa | 318 | /* the object has completed. */ |
319 | ||
344a9006 | 320 | if (mem_obj->inmem_lo == 0 && !isEmpty()) { |
47ce0a58 | 321 | if (swap_status == SWAPOUT_DONE) { |
e1381638 AJ |
322 | if (mem_obj->endOffset() == mem_obj->object_sz) { |
323 | /* hot object fully swapped in */ | |
324 | return STORE_MEM_CLIENT; | |
325 | } | |
47ce0a58 | 326 | } else { |
e1381638 AJ |
327 | /* Memory-only, or currently being swapped out */ |
328 | return STORE_MEM_CLIENT; | |
47ce0a58 HN |
329 | } |
330 | } | |
331 | return STORE_DISK_CLIENT; | |
528b2c61 | 332 | } |
62e76326 | 333 | |
528b2c61 | 334 | /* here and past, entry is STORE_PENDING */ |
335 | /* | |
336 | * If this is the first client, let it be the mem client | |
337 | */ | |
338 | if (mem_obj->nclients == 1) | |
62e76326 | 339 | return STORE_MEM_CLIENT; |
340 | ||
528b2c61 | 341 | /* |
342 | * If there is no disk file to open yet, we must make this a | |
343 | * mem client. If we can't open the swapin file before writing | |
344 | * to the client, there is no guarantee that we will be able | |
345 | * to open it later when we really need it. | |
346 | */ | |
347 | if (swap_status == SWAPOUT_NONE) | |
62e76326 | 348 | return STORE_MEM_CLIENT; |
349 | ||
528b2c61 | 350 | /* |
351 | * otherwise, make subsequent clients read from disk so they | |
352 | * can not delay the first, and vice-versa. | |
353 | */ | |
354 | return STORE_DISK_CLIENT; | |
227fbb74 | 355 | } |
356 | ||
c8f4eac4 | 357 | StoreEntry::StoreEntry() |
090089c4 | 358 | { |
59dbbc5c | 359 | debugs(20, 3, HERE << "new StoreEntry " << this); |
c8f4eac4 | 360 | mem_obj = NULL; |
62e76326 | 361 | |
c8f4eac4 | 362 | expires = lastmod = lastref = timestamp = -1; |
62e76326 | 363 | |
c8f4eac4 | 364 | swap_filen = -1; |
365 | swap_dirn = -1; | |
366 | } | |
62e76326 | 367 | |
d5f8d05f | 368 | StoreEntry::StoreEntry(const char *aUrl, const char *aLogUrl) |
c8f4eac4 | 369 | { |
59dbbc5c | 370 | debugs(20, 3, HERE << "new StoreEntry " << this); |
d5f8d05f | 371 | mem_obj = new MemObject(aUrl, aLogUrl); |
62e76326 | 372 | |
c8f4eac4 | 373 | expires = lastmod = lastref = timestamp = -1; |
374 | ||
375 | swap_filen = -1; | |
376 | swap_dirn = -1; | |
090089c4 | 377 | } |
378 | ||
3900307b | 379 | void |
380 | StoreEntry::destroyMemObject() | |
090089c4 | 381 | { |
3900307b | 382 | debugs(20, 3, HERE << "destroyMemObject " << mem_obj); |
383 | setMemStatus(NOT_IN_MEMORY); | |
384 | MemObject *mem = mem_obj; | |
385 | mem_obj = NULL; | |
528b2c61 | 386 | delete mem; |
090089c4 | 387 | } |
388 | ||
c8f4eac4 | 389 | void |
528b2c61 | 390 | destroyStoreEntry(void *data) |
090089c4 | 391 | { |
59dbbc5c | 392 | debugs(20, 3, HERE << "destroyStoreEntry: destroying " << data); |
c8f4eac4 | 393 | StoreEntry *e = static_cast<StoreEntry *>(static_cast<hash_link *>(data)); |
9e975e4e | 394 | assert(e != NULL); |
62e76326 | 395 | |
e6ccf245 | 396 | if (e == NullStoreEntry::getInstance()) |
62e76326 | 397 | return; |
398 | ||
3900307b | 399 | e->destroyMemObject(); |
62e76326 | 400 | |
3900307b | 401 | e->hashDelete(); |
62e76326 | 402 | |
332dafa2 | 403 | assert(e->key == NULL); |
62e76326 | 404 | |
e6ccf245 | 405 | delete e; |
227fbb74 | 406 | } |
090089c4 | 407 | |
090089c4 | 408 | /* ----- INTERFACE BETWEEN STORAGE MANAGER AND HASH TABLE FUNCTIONS --------- */ |
409 | ||
f09f5b26 | 410 | void |
3900307b | 411 | StoreEntry::hashInsert(const cache_key * someKey) |
090089c4 | 412 | { |
bf8fe701 | 413 | debugs(20, 3, "StoreEntry::hashInsert: Inserting Entry " << this << " key '" << storeKeyText(someKey) << "'"); |
3900307b | 414 | key = storeKeyDup(someKey); |
415 | hash_join(store_table, this); | |
090089c4 | 416 | } |
417 | ||
3900307b | 418 | void |
419 | StoreEntry::hashDelete() | |
090089c4 | 420 | { |
3900307b | 421 | hash_remove_link(store_table, this); |
422 | storeKeyFree((const cache_key *)key); | |
423 | key = NULL; | |
090089c4 | 424 | } |
425 | ||
090089c4 | 426 | /* -------------------------------------------------------------------------- */ |
427 | ||
090089c4 | 428 | |
429 | /* get rid of memory copy of the object */ | |
d88e3c49 | 430 | void |
431 | StoreEntry::purgeMem() | |
090089c4 | 432 | { |
d88e3c49 | 433 | if (mem_obj == NULL) |
62e76326 | 434 | return; |
435 | ||
bf8fe701 | 436 | debugs(20, 3, "StoreEntry::purgeMem: Freeing memory-copy of " << getMD5Text()); |
62e76326 | 437 | |
3900307b | 438 | destroyMemObject(); |
62e76326 | 439 | |
d88e3c49 | 440 | if (swap_status != SWAPOUT_DONE) |
441 | release(); | |
090089c4 | 442 | } |
443 | ||
c8f4eac4 | 444 | /* RBC 20050104 this is wrong- memory ref counting |
445 | * is not at all equivalent to the store 'usage' concept | |
446 | * which the replacement policies should be acting upon. | |
447 | * specifically, object iteration within stores needs | |
448 | * memory ref counting to prevent race conditions, | |
449 | * but this should not influence store replacement. | |
450 | */ | |
6a566b9c | 451 | void |
c21ad0f5 | 452 | |
453 | StoreEntry::lock() | |
6a566b9c | 454 | { |
c21ad0f5 | 455 | lock_count++; |
34266cde | 456 | debugs(20, 3, "StoreEntry::lock: key '" << getMD5Text() <<"' count=" << |
bf8fe701 | 457 | lock_count ); |
c21ad0f5 | 458 | lastref = squid_curtime; |
459 | Store::Root().reference(*this); | |
090089c4 | 460 | } |
461 | ||
43ae1d95 | 462 | void |
463 | StoreEntry::setReleaseFlag() | |
464 | { | |
465 | if (EBIT_TEST(flags, RELEASE_REQUEST)) | |
466 | return; | |
467 | ||
bf8fe701 | 468 | debugs(20, 3, "StoreEntry::setReleaseFlag: '" << getMD5Text() << "'"); |
43ae1d95 | 469 | |
470 | EBIT_SET(flags, RELEASE_REQUEST); | |
471 | } | |
472 | ||
b8d8561b | 473 | void |
d88e3c49 | 474 | StoreEntry::releaseRequest() |
2285407f | 475 | { |
d88e3c49 | 476 | if (EBIT_TEST(flags, RELEASE_REQUEST)) |
62e76326 | 477 | return; |
478 | ||
d88e3c49 | 479 | setReleaseFlag(); |
62e76326 | 480 | |
f3e570e9 | 481 | /* |
482 | * Clear cachable flag here because we might get called before | |
483 | * anyone else even looks at the cachability flag. Also, this | |
484 | * prevents httpMakePublic from really setting a public key. | |
485 | */ | |
d88e3c49 | 486 | EBIT_CLR(flags, ENTRY_CACHABLE); |
62e76326 | 487 | |
d88e3c49 | 488 | setPrivateKey(); |
2285407f | 489 | } |
490 | ||
090089c4 | 491 | /* unlock object, return -1 if object get released after unlock |
492 | * otherwise lock_count */ | |
b8d8561b | 493 | int |
c21ad0f5 | 494 | StoreEntry::unlock() |
090089c4 | 495 | { |
c21ad0f5 | 496 | lock_count--; |
bf8fe701 | 497 | debugs(20, 3, "StoreEntry::unlock: key '" << getMD5Text() << "' count=" << lock_count); |
62e76326 | 498 | |
c21ad0f5 | 499 | if (lock_count) |
500 | return (int) lock_count; | |
62e76326 | 501 | |
c21ad0f5 | 502 | if (store_status == STORE_PENDING) |
503 | setReleaseFlag(); | |
62e76326 | 504 | |
c21ad0f5 | 505 | assert(storePendingNClients(this) == 0); |
62e76326 | 506 | |
c21ad0f5 | 507 | if (EBIT_TEST(flags, RELEASE_REQUEST)) |
5f33b71d | 508 | this->release(); |
3900307b | 509 | else if (keepInMemory()) { |
c21ad0f5 | 510 | Store::Root().dereference(*this); |
3900307b | 511 | setMemStatus(IN_MEMORY); |
c21ad0f5 | 512 | mem_obj->unlinkRequest(); |
66f07209 | 513 | } else { |
c21ad0f5 | 514 | Store::Root().dereference(*this); |
62e76326 | 515 | |
c21ad0f5 | 516 | if (EBIT_TEST(flags, KEY_PRIVATE)) |
bf8fe701 | 517 | debugs(20, 1, "WARNING: " << __FILE__ << ":" << __LINE__ << ": found KEY_PRIVATE"); |
42fc2858 | 518 | |
d88e3c49 | 519 | /* StoreEntry::purgeMem may free e */ |
520 | purgeMem(); | |
66f07209 | 521 | } |
62e76326 | 522 | |
6c895381 | 523 | return 0; |
090089c4 | 524 | } |
525 | ||
e6ccf245 | 526 | void |
60745f24 | 527 | StoreEntry::getPublicByRequestMethod (StoreClient *aClient, HttpRequest * request, const HttpRequestMethod& method) |
e6ccf245 | 528 | { |
529 | assert (aClient); | |
3b13a8fd | 530 | StoreEntry *result = storeGetPublicByRequestMethod( request, method); |
62e76326 | 531 | |
e6ccf245 | 532 | if (!result) |
62e76326 | 533 | aClient->created (NullStoreEntry::getInstance()); |
e6ccf245 | 534 | else |
62e76326 | 535 | aClient->created (result); |
e6ccf245 | 536 | } |
537 | ||
538 | void | |
190154cf | 539 | StoreEntry::getPublicByRequest (StoreClient *aClient, HttpRequest * request) |
e6ccf245 | 540 | { |
541 | assert (aClient); | |
3b13a8fd | 542 | StoreEntry *result = storeGetPublicByRequest (request); |
62e76326 | 543 | |
e6ccf245 | 544 | if (!result) |
62e76326 | 545 | result = NullStoreEntry::getInstance(); |
546 | ||
e6ccf245 | 547 | aClient->created (result); |
548 | } | |
549 | ||
550 | void | |
60745f24 | 551 | StoreEntry::getPublic (StoreClient *aClient, const char *uri, const HttpRequestMethod& method) |
e6ccf245 | 552 | { |
553 | assert (aClient); | |
3b13a8fd | 554 | StoreEntry *result = storeGetPublic (uri, method); |
62e76326 | 555 | |
e6ccf245 | 556 | if (!result) |
62e76326 | 557 | result = NullStoreEntry::getInstance(); |
558 | ||
e6ccf245 | 559 | aClient->created (result); |
560 | } | |
561 | ||
08e5d64f | 562 | StoreEntry * |
60745f24 | 563 | storeGetPublic(const char *uri, const HttpRequestMethod& method) |
08e5d64f | 564 | { |
c8f4eac4 | 565 | return Store::Root().get(storeKeyPublic(uri, method)); |
08e5d64f | 566 | } |
567 | ||
f66a9ef4 | 568 | StoreEntry * |
60745f24 | 569 | storeGetPublicByRequestMethod(HttpRequest * req, const HttpRequestMethod& method) |
f66a9ef4 | 570 | { |
c8f4eac4 | 571 | return Store::Root().get(storeKeyPublicByRequestMethod(req, method)); |
f66a9ef4 | 572 | } |
573 | ||
574 | StoreEntry * | |
190154cf | 575 | storeGetPublicByRequest(HttpRequest * req) |
f66a9ef4 | 576 | { |
577 | StoreEntry *e = storeGetPublicByRequestMethod(req, req->method); | |
62e76326 | 578 | |
f66a9ef4 | 579 | if (e == NULL && req->method == METHOD_HEAD) |
62e76326 | 580 | /* We can generate a HEAD reply from a cached GET object */ |
581 | e = storeGetPublicByRequestMethod(req, METHOD_GET); | |
582 | ||
f66a9ef4 | 583 | return e; |
584 | } | |
585 | ||
007b8be4 | 586 | static int |
587 | getKeyCounter(void) | |
04e8dbaa | 588 | { |
007b8be4 | 589 | static int key_counter = 0; |
62e76326 | 590 | |
007b8be4 | 591 | if (++key_counter < 0) |
62e76326 | 592 | key_counter = 1; |
593 | ||
007b8be4 | 594 | return key_counter; |
04e8dbaa | 595 | } |
596 | ||
c8f4eac4 | 597 | /* RBC 20050104 AFAICT this should become simpler: |
598 | * rather than reinserting with a special key it should be marked | |
599 | * as 'released' and then cleaned up when refcounting indicates. | |
600 | * the StoreHashIndex could well implement its 'released' in the | |
601 | * current manner. | |
602 | * Also, clean log writing should skip over ia,t | |
603 | * Otherwise, we need a 'remove from the index but not the store | |
604 | * concept'. | |
605 | */ | |
6c57e268 | 606 | void |
d88e3c49 | 607 | StoreEntry::setPrivateKey() |
227fbb74 | 608 | { |
9fb13bb6 | 609 | const cache_key *newkey; |
62e76326 | 610 | |
d88e3c49 | 611 | if (key && EBIT_TEST(flags, KEY_PRIVATE)) |
c21ad0f5 | 612 | return; /* is already private */ |
62e76326 | 613 | |
d88e3c49 | 614 | if (key) { |
615 | if (swap_filen > -1) | |
616 | storeDirSwapLog(this, SWAP_LOG_DEL); | |
62e76326 | 617 | |
3900307b | 618 | hashDelete(); |
b109de6b | 619 | } |
62e76326 | 620 | |
d88e3c49 | 621 | if (mem_obj != NULL) { |
622 | mem_obj->id = getKeyCounter(); | |
623 | newkey = storeKeyPrivate(mem_obj->url, mem_obj->method, mem_obj->id); | |
9fb13bb6 | 624 | } else { |
62e76326 | 625 | newkey = storeKeyPrivate("JUNK", METHOD_NONE, getKeyCounter()); |
9fb13bb6 | 626 | } |
62e76326 | 627 | |
9fb13bb6 | 628 | assert(hash_lookup(store_table, newkey) == NULL); |
d88e3c49 | 629 | EBIT_SET(flags, KEY_PRIVATE); |
3900307b | 630 | hashInsert(newkey); |
227fbb74 | 631 | } |
632 | ||
b8d8561b | 633 | void |
d88e3c49 | 634 | StoreEntry::setPublicKey() |
227fbb74 | 635 | { |
6eb42cae | 636 | StoreEntry *e2 = NULL; |
9fb13bb6 | 637 | const cache_key *newkey; |
62e76326 | 638 | |
d88e3c49 | 639 | if (key && !EBIT_TEST(flags, KEY_PRIVATE)) |
c21ad0f5 | 640 | return; /* is already public */ |
62e76326 | 641 | |
d88e3c49 | 642 | assert(mem_obj); |
62e76326 | 643 | |
f3e570e9 | 644 | /* |
645 | * We can't make RELEASE_REQUEST objects public. Depending on | |
646 | * when RELEASE_REQUEST gets set, we might not be swapping out | |
647 | * the object. If we're not swapping out, then subsequent | |
648 | * store clients won't be able to access object data which has | |
649 | * been freed from memory. | |
d87ebd78 | 650 | * |
651 | * If RELEASE_REQUEST is set, then ENTRY_CACHABLE should not | |
d88e3c49 | 652 | * be set, and StoreEntry::setPublicKey() should not be called. |
f3e570e9 | 653 | */ |
6a566b9c | 654 | #if MORE_DEBUG_OUTPUT |
62e76326 | 655 | |
d88e3c49 | 656 | if (EBIT_TEST(flags, RELEASE_REQUEST)) |
308652fc | 657 | debugs(20, 1, "assertion failed: RELEASE key " << key << ", url " << mem_obj->url); |
62e76326 | 658 | |
2b906e48 | 659 | #endif |
62e76326 | 660 | |
d88e3c49 | 661 | assert(!EBIT_TEST(flags, RELEASE_REQUEST)); |
62e76326 | 662 | |
d88e3c49 | 663 | if (mem_obj->request) { |
664 | HttpRequest *request = mem_obj->request; | |
62e76326 | 665 | |
d88e3c49 | 666 | if (!mem_obj->vary_headers) { |
62e76326 | 667 | /* First handle the case where the object no longer varies */ |
668 | safe_free(request->vary_headers); | |
669 | } else { | |
d88e3c49 | 670 | if (request->vary_headers && strcmp(request->vary_headers, mem_obj->vary_headers) != 0) { |
62e76326 | 671 | /* Oops.. the variance has changed. Kill the base object |
672 | * to record the new variance key | |
673 | */ | |
c21ad0f5 | 674 | safe_free(request->vary_headers); /* free old "bad" variance key */ |
d88e3c49 | 675 | StoreEntry *pe = storeGetPublic(mem_obj->url, mem_obj->method); |
62e76326 | 676 | |
677 | if (pe) | |
5f33b71d | 678 | pe->release(); |
62e76326 | 679 | } |
680 | ||
681 | /* Make sure the request knows the variance status */ | |
682 | if (!request->vary_headers) { | |
d88e3c49 | 683 | const char *vary = httpMakeVaryMark(request, mem_obj->getReply()); |
62e76326 | 684 | |
685 | if (vary) | |
686 | request->vary_headers = xstrdup(vary); | |
687 | } | |
688 | } | |
689 | ||
d88e3c49 | 690 | if (mem_obj->vary_headers && !storeGetPublic(mem_obj->url, mem_obj->method)) { |
62e76326 | 691 | /* Create "vary" base object */ |
30abd221 | 692 | String vary; |
d88e3c49 | 693 | StoreEntry *pe = storeCreateEntry(mem_obj->url, mem_obj->log_url, request->flags, request->method); |
62e76326 | 694 | /* We are allowed to do this typecast */ |
eab8dcfa | 695 | HttpReply *rep = new HttpReply; |
11992b6f | 696 | rep->setHeaders(HTTP_OK, "Internal marker object", "x-squid-internal/vary", -1, -1, squid_curtime + 100000); |
d88e3c49 | 697 | vary = mem_obj->getReply()->header.getList(HDR_VARY); |
62e76326 | 698 | |
30abd221 | 699 | if (vary.size()) { |
62e76326 | 700 | /* Again, we own this structure layout */ |
b4f2886c | 701 | rep->header.putStr(HDR_VARY, vary.termedBuf()); |
30abd221 | 702 | vary.clean(); |
62e76326 | 703 | } |
704 | ||
f66a9ef4 | 705 | #if X_ACCELERATOR_VARY |
d88e3c49 | 706 | vary = mem_obj->getReply()->header.getList(HDR_X_ACCELERATOR_VARY); |
62e76326 | 707 | |
b4197865 | 708 | if (vary.defined()) { |
62e76326 | 709 | /* Again, we own this structure layout */ |
b4197865 | 710 | rep->header.putStr(HDR_X_ACCELERATOR_VARY, vary.termedBuf()); |
30abd221 | 711 | vary.clean(); |
62e76326 | 712 | } |
713 | ||
f66a9ef4 | 714 | #endif |
eab8dcfa | 715 | pe->replaceHttpReply(rep); |
62e76326 | 716 | |
3900307b | 717 | pe->timestampsSet(); |
ba27c9a0 | 718 | |
eab8dcfa | 719 | pe->makePublic(); |
62e76326 | 720 | |
62e76326 | 721 | pe->complete(); |
eab8dcfa | 722 | |
97b5e68f | 723 | pe->unlock(); |
62e76326 | 724 | } |
725 | ||
d88e3c49 | 726 | newkey = storeKeyPublicByRequest(mem_obj->request); |
f66a9ef4 | 727 | } else |
d88e3c49 | 728 | newkey = storeKeyPublic(mem_obj->url, mem_obj->method); |
62e76326 | 729 | |
9fb13bb6 | 730 | if ((e2 = (StoreEntry *) hash_lookup(store_table, newkey))) { |
bf8fe701 | 731 | debugs(20, 3, "StoreEntry::setPublicKey: Making old '" << mem_obj->url << "' private."); |
d88e3c49 | 732 | e2->setPrivateKey(); |
5f33b71d | 733 | e2->release(); |
62e76326 | 734 | |
d88e3c49 | 735 | if (mem_obj->request) |
736 | newkey = storeKeyPublicByRequest(mem_obj->request); | |
62e76326 | 737 | else |
d88e3c49 | 738 | newkey = storeKeyPublic(mem_obj->url, mem_obj->method); |
6eb42cae | 739 | } |
62e76326 | 740 | |
d88e3c49 | 741 | if (key) |
3900307b | 742 | hashDelete(); |
62e76326 | 743 | |
d88e3c49 | 744 | EBIT_CLR(flags, KEY_PRIVATE); |
62e76326 | 745 | |
3900307b | 746 | hashInsert(newkey); |
62e76326 | 747 | |
d88e3c49 | 748 | if (swap_filen > -1) |
749 | storeDirSwapLog(this, SWAP_LOG_ADD); | |
227fbb74 | 750 | } |
751 | ||
b8d8561b | 752 | StoreEntry * |
60745f24 | 753 | storeCreateEntry(const char *url, const char *log_url, request_flags flags, const HttpRequestMethod& method) |
090089c4 | 754 | { |
090089c4 | 755 | StoreEntry *e = NULL; |
30a4f2a8 | 756 | MemObject *mem = NULL; |
bf8fe701 | 757 | debugs(20, 3, "storeCreateEntry: '" << url << "'"); |
090089c4 | 758 | |
c8f4eac4 | 759 | e = new StoreEntry(url, log_url); |
c21ad0f5 | 760 | e->lock_count = 1; /* Note lock here w/o calling storeLock() */ |
30a4f2a8 | 761 | mem = e->mem_obj; |
2ac237e2 | 762 | mem->method = method; |
62e76326 | 763 | |
92695e5e | 764 | if (neighbors_do_private_keys || !flags.hierarchical) |
d88e3c49 | 765 | e->setPrivateKey(); |
86101e40 | 766 | else |
d88e3c49 | 767 | e->setPublicKey(); |
62e76326 | 768 | |
92695e5e | 769 | if (flags.cachable) { |
62e76326 | 770 | EBIT_SET(e->flags, ENTRY_CACHABLE); |
771 | EBIT_CLR(e->flags, RELEASE_REQUEST); | |
090089c4 | 772 | } else { |
d88e3c49 | 773 | /* StoreEntry::releaseRequest() clears ENTRY_CACHABLE */ |
774 | e->releaseRequest(); | |
090089c4 | 775 | } |
62e76326 | 776 | |
234967c9 | 777 | e->store_status = STORE_PENDING; |
3900307b | 778 | e->setMemStatus(NOT_IN_MEMORY); |
8350fe9b | 779 | e->swap_status = SWAPOUT_NONE; |
cd748f27 | 780 | e->swap_filen = -1; |
781 | e->swap_dirn = -1; | |
090089c4 | 782 | e->refcount = 0; |
b8de7ebe | 783 | e->lastref = squid_curtime; |
3900307b | 784 | e->timestamp = -1; /* set in StoreEntry::timestampsSet() */ |
30a4f2a8 | 785 | e->ping_status = PING_NONE; |
d46a87a8 | 786 | EBIT_SET(e->flags, ENTRY_VALIDATED); |
090089c4 | 787 | return e; |
788 | } | |
789 | ||
6eb42cae | 790 | /* Mark object as expired */ |
b8d8561b | 791 | void |
d88e3c49 | 792 | StoreEntry::expireNow() |
9174e204 | 793 | { |
bf8fe701 | 794 | debugs(20, 3, "StoreEntry::expireNow: '" << getMD5Text() << "'"); |
d88e3c49 | 795 | expires = squid_curtime; |
9174e204 | 796 | } |
797 | ||
528b2c61 | 798 | void |
799 | storeWriteComplete (void *data, StoreIOBuffer wroteBuffer) | |
800 | { | |
1d5161bd | 801 | PROF_start(storeWriteComplete); |
528b2c61 | 802 | StoreEntry *e = (StoreEntry *)data; |
62e76326 | 803 | |
1d5161bd | 804 | if (EBIT_TEST(e->flags, DELAY_SENDING)) { |
805 | PROF_stop(storeWriteComplete); | |
62e76326 | 806 | return; |
1d5161bd | 807 | } |
62e76326 | 808 | |
d88e3c49 | 809 | e->invokeHandlers(); |
1d5161bd | 810 | PROF_stop(storeWriteComplete); |
528b2c61 | 811 | } |
812 | ||
813 | void | |
814 | StoreEntry::write (StoreIOBuffer writeBuffer) | |
815 | { | |
816 | assert(mem_obj != NULL); | |
817 | assert(writeBuffer.length >= 0); | |
818 | /* This assert will change when we teach the store to update */ | |
d2639a5b | 819 | PROF_start(StoreEntry_write); |
528b2c61 | 820 | assert(store_status == STORE_PENDING); |
62e76326 | 821 | |
26ac0430 | 822 | if (!writeBuffer.length) { |
2324cda2 | 823 | /* the headers are received already, but we have not received |
43785884 | 824 | * any body data. There are BROKEN abuses of HTTP which require |
825 | * the headers to be passed along before any body data - see | |
826 | * http://developer.apple.com/documentation/QuickTime/QTSS/Concepts/chapter_2_section_14.html | |
827 | * for an example of such bad behaviour. To accomodate this, if | |
828 | * we have a empty write arrive, we flush to our clients. | |
829 | * -RBC 20060903 | |
830 | */ | |
d2639a5b | 831 | PROF_stop(StoreEntry_write); |
d88e3c49 | 832 | invokeHandlers(); |
62e76326 | 833 | return; |
26ac0430 | 834 | } |
62e76326 | 835 | |
d2639a5b | 836 | debugs(20, 5, "storeWrite: writing " << writeBuffer.length << " bytes for '" << getMD5Text() << "'"); |
837 | PROF_stop(StoreEntry_write); | |
528b2c61 | 838 | storeGetMemSpace(writeBuffer.length); |
839 | mem_obj->write (writeBuffer, storeWriteComplete, this); | |
840 | } | |
841 | ||
c21ad0f5 | 842 | /* Append incoming data from a primary server to an entry. */ |
843 | void | |
844 | StoreEntry::append(char const *buf, int len) | |
845 | { | |
846 | assert(mem_obj != NULL); | |
3a1c3e2f | 847 | assert(len >= 0); |
c21ad0f5 | 848 | assert(store_status == STORE_PENDING); |
528b2c61 | 849 | |
850 | StoreIOBuffer tempBuffer; | |
851 | tempBuffer.data = (char *)buf; | |
852 | tempBuffer.length = len; | |
aa18a4ca | 853 | /* |
854 | * XXX sigh, offset might be < 0 here, but it gets "corrected" | |
855 | * later. This offset crap is such a mess. | |
856 | */ | |
c21ad0f5 | 857 | tempBuffer.offset = mem_obj->endOffset() - (getReply() ? getReply()->hdr_sz : 0); |
858 | write(tempBuffer); | |
090089c4 | 859 | } |
860 | ||
c21ad0f5 | 861 | |
b8d8561b | 862 | void |
fe4e214f | 863 | storeAppendPrintf(StoreEntry * e, const char *fmt,...) |
15c05bb0 | 864 | { |
62d32805 | 865 | va_list args; |
866 | va_start(args, fmt); | |
62e76326 | 867 | |
cb69b4c7 | 868 | storeAppendVPrintf(e, fmt, args); |
869 | va_end(args); | |
870 | } | |
871 | ||
872 | /* used be storeAppendPrintf and Packer */ | |
873 | void | |
874 | storeAppendVPrintf(StoreEntry * e, const char *fmt, va_list vargs) | |
875 | { | |
876 | LOCAL_ARRAY(char, buf, 4096); | |
15c05bb0 | 877 | buf[0] = '\0'; |
cb69b4c7 | 878 | vsnprintf(buf, 4096, fmt, vargs); |
3900307b | 879 | e->append(buf, strlen(buf)); |
c30c5a73 | 880 | } |
881 | ||
26ac0430 | 882 | struct _store_check_cachable_hist { |
62e76326 | 883 | |
26ac0430 | 884 | struct { |
62e76326 | 885 | int non_get; |
886 | int not_entry_cachable; | |
887 | int wrong_content_length; | |
888 | int negative_cached; | |
889 | int too_big; | |
890 | int too_small; | |
891 | int private_key; | |
892 | int too_many_open_files; | |
893 | int too_many_open_fds; | |
2fadd50d | 894 | } no; |
62e76326 | 895 | |
26ac0430 | 896 | struct { |
62e76326 | 897 | int Default; |
2fadd50d HN |
898 | } yes; |
899 | } store_check_cachable_hist; | |
8423ff74 | 900 | |
c47511fd | 901 | int |
902 | storeTooManyDiskFilesOpen(void) | |
903 | { | |
904 | if (Config.max_open_disk_fds == 0) | |
62e76326 | 905 | return 0; |
906 | ||
83a29c95 | 907 | if (store_open_disk_fd > Config.max_open_disk_fds) |
62e76326 | 908 | return 1; |
909 | ||
c47511fd | 910 | return 0; |
911 | } | |
912 | ||
3900307b | 913 | int |
914 | StoreEntry::checkTooSmall() | |
d20b1cd0 | 915 | { |
3900307b | 916 | if (EBIT_TEST(flags, ENTRY_SPECIAL)) |
62e76326 | 917 | return 0; |
918 | ||
3900307b | 919 | if (STORE_OK == store_status) |
920 | if (mem_obj->object_sz < 0 || | |
26ac0430 | 921 | mem_obj->object_sz < Config.Store.minObjectSize) |
62e76326 | 922 | return 1; |
3900307b | 923 | if (getReply()->content_length > -1) |
47f6e231 | 924 | if (getReply()->content_length < Config.Store.minObjectSize) |
62e76326 | 925 | return 1; |
d20b1cd0 | 926 | return 0; |
927 | } | |
928 | ||
f09f5b26 | 929 | int |
3900307b | 930 | StoreEntry::checkCachable() |
6602e70e | 931 | { |
2ac237e2 | 932 | #if CACHE_ALL_METHODS |
62e76326 | 933 | |
3900307b | 934 | if (mem_obj->method != METHOD_GET) { |
bf8fe701 | 935 | debugs(20, 2, "StoreEntry::checkCachable: NO: non-GET method"); |
62e76326 | 936 | store_check_cachable_hist.no.non_get++; |
2ac237e2 | 937 | } else |
938 | #endif | |
3900307b | 939 | if (store_status == STORE_OK && EBIT_TEST(flags, ENTRY_BAD_LENGTH)) { |
bf8fe701 | 940 | debugs(20, 2, "StoreEntry::checkCachable: NO: wrong content-length"); |
62e76326 | 941 | store_check_cachable_hist.no.wrong_content_length++; |
3900307b | 942 | } else if (!EBIT_TEST(flags, ENTRY_CACHABLE)) { |
bf8fe701 | 943 | debugs(20, 2, "StoreEntry::checkCachable: NO: not cachable"); |
be3b12f0 | 944 | store_check_cachable_hist.no.not_entry_cachable++; |
3900307b | 945 | } else if (EBIT_TEST(flags, ENTRY_NEGCACHED)) { |
bf8fe701 | 946 | debugs(20, 3, "StoreEntry::checkCachable: NO: negative cached"); |
62e76326 | 947 | store_check_cachable_hist.no.negative_cached++; |
c21ad0f5 | 948 | return 0; /* avoid release call below */ |
3900307b | 949 | } else if ((getReply()->content_length > 0 && |
47f6e231 | 950 | getReply()->content_length |
62e76326 | 951 | > Config.Store.maxObjectSize) || |
47f6e231 | 952 | mem_obj->endOffset() > Config.Store.maxObjectSize) { |
bf8fe701 | 953 | debugs(20, 2, "StoreEntry::checkCachable: NO: too big"); |
62e76326 | 954 | store_check_cachable_hist.no.too_big++; |
47f6e231 | 955 | } else if (getReply()->content_length > Config.Store.maxObjectSize) { |
bf8fe701 | 956 | debugs(20, 2, "StoreEntry::checkCachable: NO: too big"); |
62e76326 | 957 | store_check_cachable_hist.no.too_big++; |
3900307b | 958 | } else if (checkTooSmall()) { |
bf8fe701 | 959 | debugs(20, 2, "StoreEntry::checkCachable: NO: too small"); |
62e76326 | 960 | store_check_cachable_hist.no.too_small++; |
3900307b | 961 | } else if (EBIT_TEST(flags, KEY_PRIVATE)) { |
bf8fe701 | 962 | debugs(20, 3, "StoreEntry::checkCachable: NO: private key"); |
62e76326 | 963 | store_check_cachable_hist.no.private_key++; |
3900307b | 964 | } else if (swap_status != SWAPOUT_NONE) { |
62e76326 | 965 | /* |
966 | * here we checked the swap_status because the remaining | |
967 | * cases are only relevant only if we haven't started swapping | |
968 | * out the object yet. | |
969 | */ | |
970 | return 1; | |
971 | } else if (storeTooManyDiskFilesOpen()) { | |
bf8fe701 | 972 | debugs(20, 2, "StoreEntry::checkCachable: NO: too many disk files open"); |
62e76326 | 973 | store_check_cachable_hist.no.too_many_open_files++; |
974 | } else if (fdNFree() < RESERVED_FD) { | |
bf8fe701 | 975 | debugs(20, 2, "StoreEntry::checkCachable: NO: too many FD's open"); |
62e76326 | 976 | store_check_cachable_hist.no.too_many_open_fds++; |
977 | } else { | |
978 | store_check_cachable_hist.yes.Default++; | |
979 | return 1; | |
980 | } | |
981 | ||
3900307b | 982 | releaseRequest(); |
d88e3c49 | 983 | /* StoreEntry::releaseRequest() cleared ENTRY_CACHABLE */ |
6602e70e | 984 | return 0; |
985 | } | |
986 | ||
3900307b | 987 | void |
988 | storeCheckCachableStats(StoreEntry *sentry) | |
8423ff74 | 989 | { |
c40acff3 | 990 | storeAppendPrintf(sentry, "Category\t Count\n"); |
991 | ||
a0cd8f99 | 992 | #if CACHE_ALL_METHODS |
62e76326 | 993 | |
8423ff74 | 994 | storeAppendPrintf(sentry, "no.non_get\t%d\n", |
62e76326 | 995 | store_check_cachable_hist.no.non_get); |
a0cd8f99 | 996 | #endif |
62e76326 | 997 | |
8423ff74 | 998 | storeAppendPrintf(sentry, "no.not_entry_cachable\t%d\n", |
62e76326 | 999 | store_check_cachable_hist.no.not_entry_cachable); |
8423ff74 | 1000 | storeAppendPrintf(sentry, "no.wrong_content_length\t%d\n", |
62e76326 | 1001 | store_check_cachable_hist.no.wrong_content_length); |
8423ff74 | 1002 | storeAppendPrintf(sentry, "no.negative_cached\t%d\n", |
62e76326 | 1003 | store_check_cachable_hist.no.negative_cached); |
8423ff74 | 1004 | storeAppendPrintf(sentry, "no.too_big\t%d\n", |
62e76326 | 1005 | store_check_cachable_hist.no.too_big); |
d20b1cd0 | 1006 | storeAppendPrintf(sentry, "no.too_small\t%d\n", |
62e76326 | 1007 | store_check_cachable_hist.no.too_small); |
8423ff74 | 1008 | storeAppendPrintf(sentry, "no.private_key\t%d\n", |
62e76326 | 1009 | store_check_cachable_hist.no.private_key); |
c5f627c2 | 1010 | storeAppendPrintf(sentry, "no.too_many_open_files\t%d\n", |
62e76326 | 1011 | store_check_cachable_hist.no.too_many_open_files); |
59ffcdf8 | 1012 | storeAppendPrintf(sentry, "no.too_many_open_fds\t%d\n", |
62e76326 | 1013 | store_check_cachable_hist.no.too_many_open_fds); |
8423ff74 | 1014 | storeAppendPrintf(sentry, "yes.default\t%d\n", |
62e76326 | 1015 | store_check_cachable_hist.yes.Default); |
8423ff74 | 1016 | } |
1017 | ||
b8d8561b | 1018 | void |
528b2c61 | 1019 | StoreEntry::complete() |
090089c4 | 1020 | { |
bf8fe701 | 1021 | debugs(20, 3, "storeComplete: '" << getMD5Text() << "'"); |
62e76326 | 1022 | |
528b2c61 | 1023 | if (store_status != STORE_PENDING) { |
62e76326 | 1024 | /* |
1025 | * if we're not STORE_PENDING, then probably we got aborted | |
1026 | * and there should be NO clients on this entry | |
1027 | */ | |
1028 | assert(EBIT_TEST(flags, ENTRY_ABORTED)); | |
1029 | assert(mem_obj->nclients == 0); | |
1030 | return; | |
b6403fac | 1031 | } |
62e76326 | 1032 | |
7d31d5fa | 1033 | /* This is suspect: mem obj offsets include the headers. do we adjust for that |
1034 | * in use of object_sz? | |
1035 | */ | |
528b2c61 | 1036 | mem_obj->object_sz = mem_obj->endOffset(); |
7d31d5fa | 1037 | |
528b2c61 | 1038 | store_status = STORE_OK; |
7d31d5fa | 1039 | |
528b2c61 | 1040 | assert(mem_status == NOT_IN_MEMORY); |
62e76326 | 1041 | |
528b2c61 | 1042 | if (!validLength()) { |
62e76326 | 1043 | EBIT_SET(flags, ENTRY_BAD_LENGTH); |
d88e3c49 | 1044 | releaseRequest(); |
41587298 | 1045 | } |
62e76326 | 1046 | |
6cfa8966 | 1047 | #if USE_CACHE_DIGESTS |
528b2c61 | 1048 | if (mem_obj->request) |
62e76326 | 1049 | mem_obj->request->hier.store_complete_stop = current_time; |
1050 | ||
39edba21 | 1051 | #endif |
d20b1cd0 | 1052 | /* |
d88e3c49 | 1053 | * We used to call invokeHandlers, then storeSwapOut. However, |
d20b1cd0 | 1054 | * Madhukar Reddy <myreddy@persistence.com> reported that |
1055 | * responses without content length would sometimes get released | |
1056 | * in client_side, thinking that the response is incomplete. | |
1057 | */ | |
d88e3c49 | 1058 | invokeHandlers(); |
7e3e1d01 | 1059 | } |
1060 | ||
090089c4 | 1061 | /* |
474cac1b | 1062 | * Someone wants to abort this transfer. Set the reason in the |
1063 | * request structure, call the server-side callback and mark the | |
2b906e48 | 1064 | * entry for releasing |
090089c4 | 1065 | */ |
b8d8561b | 1066 | void |
bfb55b6f | 1067 | StoreEntry::abort() |
090089c4 | 1068 | { |
528b2c61 | 1069 | statCounter.aborted_requests++; |
bfb55b6f | 1070 | assert(store_status == STORE_PENDING); |
1071 | assert(mem_obj != NULL); | |
bf8fe701 | 1072 | debugs(20, 6, "storeAbort: " << getMD5Text()); |
34266cde | 1073 | |
ac9cc053 | 1074 | lock(); /* lock while aborting */ |
d88e3c49 | 1075 | negativeCache(); |
34266cde | 1076 | |
d88e3c49 | 1077 | releaseRequest(); |
34266cde | 1078 | |
bfb55b6f | 1079 | EBIT_SET(flags, ENTRY_ABORTED); |
34266cde | 1080 | |
3900307b | 1081 | setMemStatus(NOT_IN_MEMORY); |
34266cde | 1082 | |
bfb55b6f | 1083 | store_status = STORE_OK; |
34266cde | 1084 | |
496e1d76 | 1085 | /* |
1086 | * We assign an object length here. The only other place we assign | |
1087 | * the object length is in storeComplete() | |
1088 | */ | |
528b2c61 | 1089 | /* RBC: What do we need an object length for? we've just aborted the |
1090 | * request, the request is private and negatively cached. Surely | |
1091 | * the object length is inappropriate to set. | |
1092 | */ | |
bfb55b6f | 1093 | mem_obj->object_sz = mem_obj->endOffset(); |
34266cde | 1094 | |
474cac1b | 1095 | /* Notify the server side */ |
62e76326 | 1096 | |
8ea67c2b | 1097 | /* |
1098 | * DPW 2007-05-07 | |
1099 | * Should we check abort.data for validity? | |
1100 | */ | |
bfb55b6f | 1101 | if (mem_obj->abort.callback) { |
26ac0430 AJ |
1102 | if (!cbdataReferenceValid(mem_obj->abort.data)) |
1103 | debugs(20,1,HERE << "queueing event when abort.data is not valid"); | |
bfb55b6f | 1104 | eventAdd("mem_obj->abort.callback", |
1105 | mem_obj->abort.callback, | |
1106 | mem_obj->abort.data, | |
62e76326 | 1107 | 0.0, |
8ea67c2b | 1108 | true); |
26ac0430 | 1109 | unregisterAbort(); |
bfcaf585 | 1110 | } |
62e76326 | 1111 | |
1112 | /* XXX Should we reverse these two, so that there is no | |
26ac0430 | 1113 | * unneeded disk swapping triggered? |
528b2c61 | 1114 | */ |
474cac1b | 1115 | /* Notify the client side */ |
d88e3c49 | 1116 | invokeHandlers(); |
62e76326 | 1117 | |
cd748f27 | 1118 | /* Close any swapout file */ |
bfb55b6f | 1119 | swapOutFileClose(); |
62e76326 | 1120 | |
bfb55b6f | 1121 | unlock(); /* unlock */ |
090089c4 | 1122 | } |
1123 | ||
6d3c2758 HN |
1124 | /** |
1125 | * Clear Memory storage to accommodate the given object len | |
1126 | */ | |
1127 | void | |
d4432957 | 1128 | storeGetMemSpace(int size) |
090089c4 | 1129 | { |
1d5161bd | 1130 | PROF_start(storeGetMemSpace); |
b32508fb | 1131 | StoreEntry *e = NULL; |
20cba4b4 | 1132 | int released = 0; |
b32508fb | 1133 | static time_t last_check = 0; |
528b2c61 | 1134 | size_t pages_needed; |
6a566b9c | 1135 | RemovalPurgeWalker *walker; |
62e76326 | 1136 | |
1d5161bd | 1137 | if (squid_curtime == last_check) { |
1138 | PROF_stop(storeGetMemSpace); | |
62e76326 | 1139 | return; |
1d5161bd | 1140 | } |
62e76326 | 1141 | |
b32508fb | 1142 | last_check = squid_curtime; |
62e76326 | 1143 | |
e954773d | 1144 | pages_needed = (size / SM_PAGE_SIZE) + 1; |
62e76326 | 1145 | |
1d5161bd | 1146 | if (mem_node::InUseCount() + pages_needed < store_pages_max) { |
1147 | PROF_stop(storeGetMemSpace); | |
62e76326 | 1148 | return; |
1d5161bd | 1149 | } |
62e76326 | 1150 | |
e4049756 | 1151 | debugs(20, 2, "storeGetMemSpace: Starting, need " << pages_needed << |
1152 | " pages"); | |
62e76326 | 1153 | |
6a566b9c | 1154 | /* XXX what to set as max_scan here? */ |
1155 | walker = mem_policy->PurgeInit(mem_policy, 100000); | |
62e76326 | 1156 | |
c1dd71ae | 1157 | while ((e = walker->Next(walker))) { |
d88e3c49 | 1158 | e->purgeMem(); |
62e76326 | 1159 | released++; |
1160 | ||
1161 | if (mem_node::InUseCount() + pages_needed < store_pages_max) | |
1162 | break; | |
8350fe9b | 1163 | } |
62e76326 | 1164 | |
6a566b9c | 1165 | walker->Done(walker); |
bf8fe701 | 1166 | debugs(20, 3, "storeGetMemSpace stats:"); |
1167 | debugs(20, 3, " " << std::setw(6) << hot_obj_count << " HOT objects"); | |
1168 | debugs(20, 3, " " << std::setw(6) << released << " were released"); | |
1d5161bd | 1169 | PROF_stop(storeGetMemSpace); |
090089c4 | 1170 | } |
1171 | ||
c8f4eac4 | 1172 | |
1173 | /* thunk through to Store::Root().maintain(). Note that this would be better still | |
26ac0430 AJ |
1174 | * if registered against the root store itself, but that requires more complex |
1175 | * update logic - bigger fish to fry first. Long term each store when | |
c8f4eac4 | 1176 | * it becomes active will self register |
1177 | */ | |
1178 | void | |
1179 | Store::Maintain(void *notused) | |
1180 | { | |
1181 | Store::Root().maintain(); | |
1182 | ||
1183 | /* Reregister a maintain event .. */ | |
1184 | eventAdd("MaintainSwapSpace", Maintain, NULL, 1.0, 1); | |
1185 | ||
1186 | } | |
1187 | ||
090089c4 | 1188 | /* The maximum objects to scan for maintain storage space */ |
c21ad0f5 | 1189 | #define MAINTAIN_MAX_SCAN 1024 |
1190 | #define MAINTAIN_MAX_REMOVE 64 | |
090089c4 | 1191 | |
2b906e48 | 1192 | /* |
fcefe642 | 1193 | * This routine is to be called by main loop in main.c. |
1194 | * It removes expired objects on only one bucket for each time called. | |
fcefe642 | 1195 | * |
1196 | * This should get called 1/s from main(). | |
1197 | */ | |
679ac4f0 | 1198 | void |
c8f4eac4 | 1199 | StoreController::maintain() |
090089c4 | 1200 | { |
6a566b9c | 1201 | static time_t last_warn_time = 0; |
cd748f27 | 1202 | |
88bfe092 | 1203 | PROF_start(storeMaintainSwapSpace); |
c8f4eac4 | 1204 | swapDir->maintain(); |
62e76326 | 1205 | |
c8f4eac4 | 1206 | /* this should be emitted by the oversize dir, not globally */ |
62e76326 | 1207 | |
c8f4eac4 | 1208 | if (store_swap_size > Store::Root().maxSize()) { |
62e76326 | 1209 | if (squid_curtime - last_warn_time > 10) { |
c8f4eac4 | 1210 | debugs(20, 0, "WARNING: Disk space over limit: " << store_swap_size << " KB > " |
1211 | << Store::Root().maxSize() << " KB"); | |
62e76326 | 1212 | last_warn_time = squid_curtime; |
1213 | } | |
6a566b9c | 1214 | } |
62e76326 | 1215 | |
88bfe092 | 1216 | PROF_stop(storeMaintainSwapSpace); |
090089c4 | 1217 | } |
1218 | ||
090089c4 | 1219 | /* release an object from a cache */ |
6c78a099 | 1220 | void |
5f33b71d | 1221 | StoreEntry::release() |
090089c4 | 1222 | { |
88bfe092 | 1223 | PROF_start(storeRelease); |
bf8fe701 | 1224 | debugs(20, 3, "storeRelease: Releasing: '" << getMD5Text() << "'"); |
090089c4 | 1225 | /* If, for any reason we can't discard this object because of an |
1226 | * outstanding request, mark it for pending release */ | |
62e76326 | 1227 | |
3900307b | 1228 | if (locked()) { |
d88e3c49 | 1229 | expireNow(); |
bf8fe701 | 1230 | debugs(20, 3, "storeRelease: Only setting RELEASE_REQUEST bit"); |
d88e3c49 | 1231 | releaseRequest(); |
62e76326 | 1232 | PROF_stop(storeRelease); |
1233 | return; | |
090089c4 | 1234 | } |
62e76326 | 1235 | |
bef81ea5 | 1236 | if (StoreController::store_dirs_rebuilding && swap_filen > -1) { |
d88e3c49 | 1237 | setPrivateKey(); |
62e76326 | 1238 | |
5f33b71d | 1239 | if (mem_obj) |
3900307b | 1240 | destroyMemObject(); |
62e76326 | 1241 | |
5f33b71d | 1242 | if (swap_filen > -1) { |
62e76326 | 1243 | /* |
34266cde | 1244 | * Fake a call to StoreEntry->lock() When rebuilding is done, |
1245 | * we'll just call StoreEntry->unlock() on these. | |
62e76326 | 1246 | */ |
5f33b71d | 1247 | lock_count++; |
1248 | setReleaseFlag(); | |
1249 | LateReleaseStack.push_back(this); | |
62e76326 | 1250 | PROF_stop(storeRelease); |
1251 | return; | |
1252 | } else { | |
5f33b71d | 1253 | destroyStoreEntry(static_cast<hash_link *>(this)); |
62e76326 | 1254 | } |
43d9cf56 | 1255 | } |
62e76326 | 1256 | |
5f33b71d | 1257 | storeLog(STORE_LOG_RELEASE, this); |
62e76326 | 1258 | |
5f33b71d | 1259 | if (swap_filen > -1) { |
1260 | unlink(); | |
62e76326 | 1261 | |
5f33b71d | 1262 | if (swap_status == SWAPOUT_DONE) |
1263 | if (EBIT_TEST(flags, ENTRY_VALIDATED)) | |
1264 | store()->updateSize(swap_file_sz, -1); | |
62e76326 | 1265 | |
5f33b71d | 1266 | if (!EBIT_TEST(flags, KEY_PRIVATE)) |
1267 | storeDirSwapLog(this, SWAP_LOG_DEL); | |
62e76326 | 1268 | |
cd748f27 | 1269 | #if 0 |
62e76326 | 1270 | /* From 2.4. I think we do this in storeUnlink? */ |
5f33b71d | 1271 | storeSwapFileNumberSet(this, -1); |
62e76326 | 1272 | |
cd748f27 | 1273 | #endif |
62e76326 | 1274 | |
090089c4 | 1275 | } |
62e76326 | 1276 | |
3900307b | 1277 | setMemStatus(NOT_IN_MEMORY); |
5f33b71d | 1278 | destroyStoreEntry(static_cast<hash_link *>(this)); |
88bfe092 | 1279 | PROF_stop(storeRelease); |
090089c4 | 1280 | } |
1281 | ||
e42d5181 | 1282 | static void |
1283 | storeLateRelease(void *unused) | |
1284 | { | |
1285 | StoreEntry *e; | |
1286 | int i; | |
1287 | static int n = 0; | |
62e76326 | 1288 | |
bef81ea5 | 1289 | if (StoreController::store_dirs_rebuilding) { |
62e76326 | 1290 | eventAdd("storeLateRelease", storeLateRelease, NULL, 1.0, 1); |
1291 | return; | |
e42d5181 | 1292 | } |
62e76326 | 1293 | |
e42d5181 | 1294 | for (i = 0; i < 10; i++) { |
91caca83 | 1295 | e = LateReleaseStack.pop(); |
62e76326 | 1296 | |
1297 | if (e == NULL) { | |
1298 | /* done! */ | |
bf8fe701 | 1299 | debugs(20, 1, "storeLateRelease: released " << n << " objects"); |
62e76326 | 1300 | return; |
1301 | } | |
1302 | ||
97b5e68f | 1303 | e->unlock(); |
62e76326 | 1304 | n++; |
e42d5181 | 1305 | } |
62e76326 | 1306 | |
e42d5181 | 1307 | eventAdd("storeLateRelease", storeLateRelease, NULL, 0.0, 1); |
1308 | } | |
1309 | ||
090089c4 | 1310 | /* return 1 if a store entry is locked */ |
cd748f27 | 1311 | int |
3900307b | 1312 | StoreEntry::locked() const |
090089c4 | 1313 | { |
3900307b | 1314 | if (lock_count) |
62e76326 | 1315 | return 1; |
1316 | ||
3900307b | 1317 | if (swap_status == SWAPOUT_WRITING) |
62e76326 | 1318 | return 1; |
1319 | ||
3900307b | 1320 | if (store_status == STORE_PENDING) |
62e76326 | 1321 | return 1; |
1322 | ||
b8890359 | 1323 | /* |
1324 | * SPECIAL, PUBLIC entries should be "locked" | |
1325 | */ | |
3900307b | 1326 | if (EBIT_TEST(flags, ENTRY_SPECIAL)) |
1327 | if (!EBIT_TEST(flags, KEY_PRIVATE)) | |
62e76326 | 1328 | return 1; |
1329 | ||
30a4f2a8 | 1330 | return 0; |
090089c4 | 1331 | } |
1332 | ||
528b2c61 | 1333 | bool |
1334 | StoreEntry::validLength() const | |
6602e70e | 1335 | { |
47f6e231 | 1336 | int64_t diff; |
d8b249ef | 1337 | const HttpReply *reply; |
528b2c61 | 1338 | assert(mem_obj != NULL); |
1339 | reply = getReply(); | |
bf8fe701 | 1340 | debugs(20, 3, "storeEntryValidLength: Checking '" << getMD5Text() << "'"); |
e4049756 | 1341 | debugs(20, 5, "storeEntryValidLength: object_len = " << |
707fdc47 | 1342 | objectLen()); |
bf8fe701 | 1343 | debugs(20, 5, "storeEntryValidLength: hdr_sz = " << reply->hdr_sz); |
1344 | debugs(20, 5, "storeEntryValidLength: content_length = " << reply->content_length); | |
62e76326 | 1345 | |
d8b249ef | 1346 | if (reply->content_length < 0) { |
bf8fe701 | 1347 | debugs(20, 5, "storeEntryValidLength: Unspecified content length: " << getMD5Text()); |
62e76326 | 1348 | return 1; |
ffe4a367 | 1349 | } |
62e76326 | 1350 | |
07304bf9 | 1351 | if (reply->hdr_sz == 0) { |
bf8fe701 | 1352 | debugs(20, 5, "storeEntryValidLength: Zero header size: " << getMD5Text()); |
62e76326 | 1353 | return 1; |
ffe4a367 | 1354 | } |
62e76326 | 1355 | |
528b2c61 | 1356 | if (mem_obj->method == METHOD_HEAD) { |
bf8fe701 | 1357 | debugs(20, 5, "storeEntryValidLength: HEAD request: " << getMD5Text()); |
62e76326 | 1358 | return 1; |
ffe4a367 | 1359 | } |
62e76326 | 1360 | |
cb69b4c7 | 1361 | if (reply->sline.status == HTTP_NOT_MODIFIED) |
62e76326 | 1362 | return 1; |
1363 | ||
cb69b4c7 | 1364 | if (reply->sline.status == HTTP_NO_CONTENT) |
62e76326 | 1365 | return 1; |
1366 | ||
707fdc47 | 1367 | diff = reply->hdr_sz + reply->content_length - objectLen(); |
62e76326 | 1368 | |
ebf4efff | 1369 | if (diff == 0) |
62e76326 | 1370 | return 1; |
1371 | ||
bf8fe701 | 1372 | debugs(20, 3, "storeEntryValidLength: " << (diff < 0 ? -diff : diff) << " bytes too " << (diff < 0 ? "big" : "small") <<"; '" << getMD5Text() << "'" ); |
62e76326 | 1373 | |
ebf4efff | 1374 | return 0; |
ffe4a367 | 1375 | } |
6602e70e | 1376 | |
6b7d87bb FC |
1377 | static void |
1378 | storeRegisterWithCacheManager(void) | |
1379 | { | |
8822ebee AR |
1380 | Mgr::RegisterAction("storedir", "Store Directory Stats", Store::Stats, 0, 1); |
1381 | Mgr::RegisterAction("store_io", "Store IO Interface Stats", &Mgr::StoreIoAction::Create, 0, 1); | |
1382 | Mgr::RegisterAction("store_check_cachable_stats", "storeCheckCachable() Stats", | |
26ac0430 | 1383 | storeCheckCachableStats, 0, 1); |
6b7d87bb FC |
1384 | } |
1385 | ||
b8d8561b | 1386 | void |
1387 | storeInit(void) | |
c943f331 | 1388 | { |
25535cbe | 1389 | storeKeyInit(); |
6a566b9c | 1390 | mem_policy = createRemovalPolicy(Config.memPolicy); |
8638fc66 | 1391 | storeDigestInit(); |
e3ef2b09 | 1392 | storeLogOpen(); |
e42d5181 | 1393 | eventAdd("storeLateRelease", storeLateRelease, NULL, 1.0, 1); |
c8f4eac4 | 1394 | Store::Root().init(); |
b2c141d4 | 1395 | storeRebuildStart(); |
d120ed12 FC |
1396 | |
1397 | storeRegisterWithCacheManager(); | |
62ee09ca | 1398 | } |
1399 | ||
b8d8561b | 1400 | void |
1401 | storeConfigure(void) | |
b1c0cc67 | 1402 | { |
c8f4eac4 | 1403 | store_swap_high = (long) (((float) Store::Root().maxSize() * |
62e76326 | 1404 | (float) Config.Swap.highWaterMark) / (float) 100); |
c8f4eac4 | 1405 | store_swap_low = (long) (((float) Store::Root().maxSize() * |
62e76326 | 1406 | (float) Config.Swap.lowWaterMark) / (float) 100); |
505d4821 | 1407 | store_pages_max = Config.memMaxSize / sizeof(mem_node); |
090089c4 | 1408 | } |
1409 | ||
3900307b | 1410 | int |
1411 | StoreEntry::keepInMemory() const | |
56f29785 | 1412 | { |
3900307b | 1413 | if (mem_obj == NULL) |
62e76326 | 1414 | return 0; |
1415 | ||
3900307b | 1416 | if (mem_obj->data_hdr.size() == 0) |
62e76326 | 1417 | return 0; |
1418 | ||
19fdd3f3 | 1419 | if (mem_obj->inmem_lo != 0) |
e1381638 | 1420 | return 0; |
19fdd3f3 | 1421 | |
d227e181 | 1422 | if (!Config.onoff.memory_cache_first && swap_status == SWAPOUT_DONE && refcount == 1) |
e1381638 | 1423 | return 0; |
19fdd3f3 HN |
1424 | |
1425 | return 1; | |
56f29785 | 1426 | } |
1427 | ||
edce4d98 | 1428 | int |
3900307b | 1429 | StoreEntry::checkNegativeHit() const |
edce4d98 | 1430 | { |
3900307b | 1431 | if (!EBIT_TEST(flags, ENTRY_NEGCACHED)) |
62e76326 | 1432 | return 0; |
1433 | ||
3900307b | 1434 | if (expires <= squid_curtime) |
62e76326 | 1435 | return 0; |
1436 | ||
3900307b | 1437 | if (store_status != STORE_OK) |
62e76326 | 1438 | return 0; |
1439 | ||
edce4d98 | 1440 | return 1; |
1441 | } | |
1442 | ||
ac9cc053 AJ |
1443 | /** |
1444 | * Set object for negative caching. | |
1445 | * Preserves any expiry information given by the server. | |
1446 | * In absence of proper expiry info it will set to expire immediately, | |
1447 | * or with HTTP-violations enabled the configured negative-TTL is observed | |
1448 | */ | |
b8d8561b | 1449 | void |
d88e3c49 | 1450 | StoreEntry::negativeCache() |
79b5cc5f | 1451 | { |
26ac0430 | 1452 | if (expires == 0) |
626096be | 1453 | #if USE_HTTP_VIOLATIONS |
ac9cc053 AJ |
1454 | expires = squid_curtime + Config.negativeTtl; |
1455 | #else | |
1456 | expires = squid_curtime; | |
1457 | #endif | |
d88e3c49 | 1458 | EBIT_SET(flags, ENTRY_NEGCACHED); |
79b5cc5f | 1459 | } |
0a21bd84 | 1460 | |
1461 | void | |
1462 | storeFreeMemory(void) | |
1463 | { | |
c8f4eac4 | 1464 | Store::Root(NULL); |
9bc73deb | 1465 | #if USE_CACHE_DIGESTS |
62e76326 | 1466 | |
8638fc66 | 1467 | if (store_digest) |
62e76326 | 1468 | cacheDigestDestroy(store_digest); |
1469 | ||
c68e9c6b | 1470 | #endif |
62e76326 | 1471 | |
8638fc66 | 1472 | store_digest = NULL; |
0a21bd84 | 1473 | } |
a7e59001 | 1474 | |
1475 | int | |
1476 | expiresMoreThan(time_t expires, time_t when) | |
1477 | { | |
c21ad0f5 | 1478 | if (expires < 0) /* No Expires given */ |
62e76326 | 1479 | return 1; |
1480 | ||
48f44632 | 1481 | return (expires > (squid_curtime + when)); |
a7e59001 | 1482 | } |
fe54d06d | 1483 | |
1484 | int | |
3900307b | 1485 | StoreEntry::validToSend() const |
fe54d06d | 1486 | { |
3900307b | 1487 | if (EBIT_TEST(flags, RELEASE_REQUEST)) |
62e76326 | 1488 | return 0; |
1489 | ||
3900307b | 1490 | if (EBIT_TEST(flags, ENTRY_NEGCACHED)) |
1491 | if (expires <= squid_curtime) | |
62e76326 | 1492 | return 0; |
1493 | ||
3900307b | 1494 | if (EBIT_TEST(flags, ENTRY_ABORTED)) |
62e76326 | 1495 | return 0; |
1496 | ||
fe54d06d | 1497 | return 1; |
1498 | } | |
62663274 | 1499 | |
ca98227c | 1500 | void |
3900307b | 1501 | StoreEntry::timestampsSet() |
ca98227c | 1502 | { |
3900307b | 1503 | const HttpReply *reply = getReply(); |
2f58241d | 1504 | time_t served_date = reply->date; |
a9925b40 | 1505 | int age = reply->header.getInt(HDR_AGE); |
31d36bfd | 1506 | /* Compute the timestamp, mimicking RFC2616 section 13.2.3. */ |
2f58241d | 1507 | /* make sure that 0 <= served_date <= squid_curtime */ |
62e76326 | 1508 | |
2f58241d | 1509 | if (served_date < 0 || served_date > squid_curtime) |
62e76326 | 1510 | served_date = squid_curtime; |
1511 | ||
efd900cb | 1512 | /* |
212cbb48 | 1513 | * Compensate with Age header if origin server clock is ahead |
1514 | * of us and there is a cache in between us and the origin | |
1515 | * server. But DONT compensate if the age value is larger than | |
1516 | * squid_curtime because it results in a negative served_date. | |
efd900cb | 1517 | */ |
1518 | if (age > squid_curtime - served_date) | |
62e76326 | 1519 | if (squid_curtime > age) |
1520 | served_date = squid_curtime - age; | |
1521 | ||
31d36bfd AR |
1522 | // compensate for Squid-to-server and server-to-Squid delays |
1523 | if (mem_obj && mem_obj->request) { | |
1524 | const time_t request_sent = | |
1525 | mem_obj->request->hier.peer_http_request_sent.tv_sec; | |
1526 | if (0 < request_sent && request_sent < squid_curtime) | |
1527 | served_date -= (squid_curtime - request_sent); | |
1528 | } | |
1529 | ||
0d465a25 | 1530 | if (reply->expires > 0 && reply->date > -1) |
26ac0430 | 1531 | expires = served_date + (reply->expires - reply->date); |
0d465a25 | 1532 | else |
26ac0430 | 1533 | expires = reply->expires; |
62e76326 | 1534 | |
3900307b | 1535 | lastmod = reply->last_modified; |
62e76326 | 1536 | |
3900307b | 1537 | timestamp = served_date; |
ca98227c | 1538 | } |
429fdbec | 1539 | |
bfcaf585 | 1540 | void |
3900307b | 1541 | StoreEntry::registerAbort(STABH * cb, void *data) |
bfcaf585 | 1542 | { |
3900307b | 1543 | assert(mem_obj); |
1544 | assert(mem_obj->abort.callback == NULL); | |
1545 | mem_obj->abort.callback = cb; | |
8ea67c2b | 1546 | mem_obj->abort.data = cbdataReference(data); |
bfcaf585 | 1547 | } |
1548 | ||
1549 | void | |
3900307b | 1550 | StoreEntry::unregisterAbort() |
bfcaf585 | 1551 | { |
3900307b | 1552 | assert(mem_obj); |
8ea67c2b | 1553 | if (mem_obj->abort.callback) { |
26ac0430 AJ |
1554 | mem_obj->abort.callback = NULL; |
1555 | cbdataReferenceDone(mem_obj->abort.data); | |
8ea67c2b | 1556 | } |
bfcaf585 | 1557 | } |
88738790 | 1558 | |
f09f5b26 | 1559 | void |
3900307b | 1560 | StoreEntry::dump(int l) const |
1561 | { | |
bf8fe701 | 1562 | debugs(20, l, "StoreEntry->key: " << getMD5Text()); |
1563 | debugs(20, l, "StoreEntry->next: " << next); | |
1564 | debugs(20, l, "StoreEntry->mem_obj: " << mem_obj); | |
4a7a3d56 | 1565 | debugs(20, l, "StoreEntry->timestamp: " << timestamp); |
1566 | debugs(20, l, "StoreEntry->lastref: " << lastref); | |
1567 | debugs(20, l, "StoreEntry->expires: " << expires); | |
1568 | debugs(20, l, "StoreEntry->lastmod: " << lastmod); | |
1569 | debugs(20, l, "StoreEntry->swap_file_sz: " << swap_file_sz); | |
bf8fe701 | 1570 | debugs(20, l, "StoreEntry->refcount: " << refcount); |
1571 | debugs(20, l, "StoreEntry->flags: " << storeEntryFlags(this)); | |
4a7a3d56 | 1572 | debugs(20, l, "StoreEntry->swap_dirn: " << swap_dirn); |
1573 | debugs(20, l, "StoreEntry->swap_filen: " << swap_filen); | |
1574 | debugs(20, l, "StoreEntry->lock_count: " << lock_count); | |
1575 | debugs(20, l, "StoreEntry->mem_status: " << mem_status); | |
1576 | debugs(20, l, "StoreEntry->ping_status: " << ping_status); | |
1577 | debugs(20, l, "StoreEntry->store_status: " << store_status); | |
1578 | debugs(20, l, "StoreEntry->swap_status: " << swap_status); | |
d377699f | 1579 | } |
1580 | ||
1f38f50a | 1581 | /* |
1582 | * NOTE, this function assumes only two mem states | |
1583 | */ | |
f09f5b26 | 1584 | void |
3900307b | 1585 | StoreEntry::setMemStatus(mem_status_t new_status) |
8350fe9b | 1586 | { |
3900307b | 1587 | if (new_status == mem_status) |
62e76326 | 1588 | return; |
1589 | ||
3900307b | 1590 | assert(mem_obj != NULL); |
62e76326 | 1591 | |
b93bcace | 1592 | if (new_status == IN_MEMORY) { |
3900307b | 1593 | assert(mem_obj->inmem_lo == 0); |
62e76326 | 1594 | |
3900307b | 1595 | if (EBIT_TEST(flags, ENTRY_SPECIAL)) { |
bf8fe701 | 1596 | debugs(20, 4, "StoreEntry::setMemStatus: not inserting special " << mem_obj->url << " into policy"); |
62e76326 | 1597 | } else { |
3900307b | 1598 | mem_policy->Add(mem_policy, this, &mem_obj->repl); |
bf8fe701 | 1599 | debugs(20, 4, "StoreEntry::setMemStatus: inserted mem node " << mem_obj->url); |
62e76326 | 1600 | } |
1601 | ||
1602 | hot_obj_count++; | |
b93bcace | 1603 | } else { |
3900307b | 1604 | if (EBIT_TEST(flags, ENTRY_SPECIAL)) { |
bf8fe701 | 1605 | debugs(20, 4, "StoreEntry::setMemStatus: special entry " << mem_obj->url); |
62e76326 | 1606 | } else { |
3900307b | 1607 | mem_policy->Remove(mem_policy, this, &mem_obj->repl); |
bf8fe701 | 1608 | debugs(20, 4, "StoreEntry::setMemStatus: removed mem node " << mem_obj->url); |
62e76326 | 1609 | } |
1610 | ||
1611 | hot_obj_count--; | |
b93bcace | 1612 | } |
62e76326 | 1613 | |
3900307b | 1614 | mem_status = new_status; |
8350fe9b | 1615 | } |
6e86c3e8 | 1616 | |
9fb13bb6 | 1617 | const char * |
3900307b | 1618 | StoreEntry::url() const |
9fb13bb6 | 1619 | { |
3900307b | 1620 | if (this == NULL) |
62e76326 | 1621 | return "[null_entry]"; |
3900307b | 1622 | else if (mem_obj == NULL) |
62e76326 | 1623 | return "[null_mem_obj]"; |
9fb13bb6 | 1624 | else |
3900307b | 1625 | return mem_obj->url; |
9fb13bb6 | 1626 | } |
24ffafb4 | 1627 | |
1628 | void | |
d5f8d05f | 1629 | StoreEntry::createMemObject(const char *aUrl, const char *aLogUrl) |
24ffafb4 | 1630 | { |
3900307b | 1631 | if (mem_obj) |
62e76326 | 1632 | return; |
1633 | ||
d5f8d05f | 1634 | mem_obj = new MemObject(aUrl, aLogUrl); |
c21ad0f5 | 1635 | } |
1636 | ||
1637 | /* this just sets DELAY_SENDING */ | |
1638 | void | |
1639 | StoreEntry::buffer() | |
1640 | { | |
1641 | EBIT_SET(flags, DELAY_SENDING); | |
1642 | } | |
1643 | ||
438fc1e3 | 1644 | /* this just clears DELAY_SENDING and Invokes the handlers */ |
1645 | void | |
c21ad0f5 | 1646 | StoreEntry::flush() |
438fc1e3 | 1647 | { |
c21ad0f5 | 1648 | if (EBIT_TEST(flags, DELAY_SENDING)) { |
1649 | EBIT_CLR(flags, DELAY_SENDING); | |
d88e3c49 | 1650 | invokeHandlers(); |
b66315e4 | 1651 | } |
25535cbe | 1652 | } |
07304bf9 | 1653 | |
47f6e231 | 1654 | int64_t |
707fdc47 | 1655 | StoreEntry::objectLen() const |
07304bf9 | 1656 | { |
707fdc47 | 1657 | assert(mem_obj != NULL); |
1658 | return mem_obj->object_sz; | |
07304bf9 | 1659 | } |
1660 | ||
47f6e231 | 1661 | int64_t |
b37bde1e | 1662 | StoreEntry::contentLen() const |
07304bf9 | 1663 | { |
b37bde1e | 1664 | assert(mem_obj != NULL); |
1665 | assert(getReply() != NULL); | |
1666 | return objectLen() - getReply()->hdr_sz; | |
07304bf9 | 1667 | } |
f3986a15 | 1668 | |
528b2c61 | 1669 | HttpReply const * |
1670 | StoreEntry::getReply () const | |
f3986a15 | 1671 | { |
528b2c61 | 1672 | if (NULL == mem_obj) |
62e76326 | 1673 | return NULL; |
1674 | ||
528b2c61 | 1675 | return mem_obj->getReply(); |
f3986a15 | 1676 | } |
db1cd23c | 1677 | |
1678 | void | |
3900307b | 1679 | StoreEntry::reset() |
db1cd23c | 1680 | { |
3900307b | 1681 | assert (mem_obj); |
bf8fe701 | 1682 | debugs(20, 3, "StoreEntry::reset: " << url()); |
3900307b | 1683 | mem_obj->reset(); |
1684 | HttpReply *rep = (HttpReply *) getReply(); // bypass const | |
06a5ae20 | 1685 | rep->reset(); |
3900307b | 1686 | expires = lastmod = timestamp = -1; |
db1cd23c | 1687 | } |
2b906e48 | 1688 | |
cd748f27 | 1689 | /* |
1690 | * storeFsInit | |
1691 | * | |
1692 | * This routine calls the SETUP routine for each fs type. | |
1693 | * I don't know where the best place for this is, and I'm not going to shuffle | |
1694 | * around large chunks of code right now (that can be done once its working.) | |
1695 | */ | |
1696 | void | |
1697 | storeFsInit(void) | |
1698 | { | |
22d38e05 | 1699 | storeReplSetup(); |
cd748f27 | 1700 | } |
1701 | ||
22d38e05 | 1702 | /* |
1703 | * called to add another store removal policy module | |
1704 | */ | |
1705 | void | |
a2c963ae | 1706 | storeReplAdd(const char *type, REMOVALPOLICYCREATE * create) |
22d38e05 | 1707 | { |
1708 | int i; | |
62e76326 | 1709 | |
d64c1498 | 1710 | /* find the number of currently known repl types */ |
22d38e05 | 1711 | for (i = 0; storerepl_list && storerepl_list[i].typestr; i++) { |
d64c1498 AJ |
1712 | if (strcmp(storerepl_list[i].typestr, type) == 0) { |
1713 | debugs(20, 1, "WARNING: Trying to load store replacement policy " << type << " twice."); | |
1714 | return; | |
1715 | } | |
22d38e05 | 1716 | } |
62e76326 | 1717 | |
22d38e05 | 1718 | /* add the new type */ |
e6ccf245 | 1719 | storerepl_list = static_cast<storerepl_entry_t *>(xrealloc(storerepl_list, (i + 2) * sizeof(storerepl_entry_t))); |
62e76326 | 1720 | |
22d38e05 | 1721 | memset(&storerepl_list[i + 1], 0, sizeof(storerepl_entry_t)); |
62e76326 | 1722 | |
22d38e05 | 1723 | storerepl_list[i].typestr = type; |
62e76326 | 1724 | |
22d38e05 | 1725 | storerepl_list[i].create = create; |
1726 | } | |
1727 | ||
1728 | /* | |
1729 | * Create a removal policy instance | |
1730 | */ | |
1731 | RemovalPolicy * | |
1732 | createRemovalPolicy(RemovalPolicySettings * settings) | |
1733 | { | |
1734 | storerepl_entry_t *r; | |
62e76326 | 1735 | |
22d38e05 | 1736 | for (r = storerepl_list; r && r->typestr; r++) { |
62e76326 | 1737 | if (strcmp(r->typestr, settings->type) == 0) |
1738 | return r->create(settings->args); | |
22d38e05 | 1739 | } |
62e76326 | 1740 | |
bf8fe701 | 1741 | debugs(20, 1, "ERROR: Unknown policy " << settings->type); |
1742 | debugs(20, 1, "ERROR: Be sure to have set cache_replacement_policy"); | |
1743 | debugs(20, 1, "ERROR: and memory_replacement_policy in squid.conf!"); | |
0c5ccf11 | 1744 | fatalf("ERROR: Unknown policy %s\n", settings->type); |
c21ad0f5 | 1745 | return NULL; /* NOTREACHED */ |
22d38e05 | 1746 | } |
1747 | ||
cd748f27 | 1748 | #if 0 |
fc8b9fc0 | 1749 | void |
1750 | storeSwapFileNumberSet(StoreEntry * e, sfileno filn) | |
1751 | { | |
1752 | if (e->swap_file_number == filn) | |
62e76326 | 1753 | return; |
1754 | ||
fc8b9fc0 | 1755 | if (filn < 0) { |
62e76326 | 1756 | assert(-1 == filn); |
1757 | storeDirMapBitReset(e->swap_file_number); | |
1758 | storeDirLRUDelete(e); | |
1759 | e->swap_file_number = -1; | |
fc8b9fc0 | 1760 | } else { |
62e76326 | 1761 | assert(-1 == e->swap_file_number); |
1762 | storeDirMapBitSet(e->swap_file_number = filn); | |
1763 | storeDirLRUAdd(e); | |
fc8b9fc0 | 1764 | } |
1765 | } | |
62e76326 | 1766 | |
cd748f27 | 1767 | #endif |
e6ccf245 | 1768 | |
4a56ee8d | 1769 | |
db237875 | 1770 | /* |
1771 | * Replace a store entry with | |
528b2c61 | 1772 | * a new reply. This eats the reply. |
1773 | */ | |
4a56ee8d | 1774 | void |
1775 | StoreEntry::replaceHttpReply(HttpReply *rep) | |
1776 | { | |
bf8fe701 | 1777 | debugs(20, 3, "StoreEntry::replaceHttpReply: " << url()); |
528b2c61 | 1778 | Packer p; |
62e76326 | 1779 | |
4a56ee8d | 1780 | if (!mem_obj) { |
bf8fe701 | 1781 | debugs(20, 0, "Attempt to replace object with no in-memory representation"); |
62e76326 | 1782 | return; |
528b2c61 | 1783 | } |
62e76326 | 1784 | |
4a56ee8d | 1785 | mem_obj->replaceHttpReply(rep); |
1786 | ||
528b2c61 | 1787 | /* TODO: when we store headers serparately remove the header portion */ |
1788 | /* TODO: mark the length of the headers ? */ | |
1789 | /* We ONLY want the headers */ | |
4a56ee8d | 1790 | packerToStoreInit(&p, this); |
62e76326 | 1791 | |
4a56ee8d | 1792 | assert (isEmpty()); |
62e76326 | 1793 | |
4a56ee8d | 1794 | getReply()->packHeadersInto(&p); |
62e76326 | 1795 | |
4a56ee8d | 1796 | rep->hdr_sz = mem_obj->endOffset(); |
62e76326 | 1797 | |
4a56ee8d | 1798 | httpBodyPackInto(&getReply()->body, &p); |
62e76326 | 1799 | |
528b2c61 | 1800 | packerClean(&p); |
1801 | } | |
62e76326 | 1802 | |
e6ccf245 | 1803 | |
528b2c61 | 1804 | char const * |
1805 | StoreEntry::getSerialisedMetaData() | |
1806 | { | |
1807 | StoreMeta *tlv_list = storeSwapMetaBuild(this); | |
1808 | int swap_hdr_sz; | |
1809 | char *result = storeSwapMetaPack(tlv_list, &swap_hdr_sz); | |
1810 | storeSwapTLVFree(tlv_list); | |
1811 | assert (swap_hdr_sz >= 0); | |
1812 | mem_obj->swap_hdr_sz = (size_t) swap_hdr_sz; | |
1813 | return result; | |
1814 | } | |
1815 | ||
1816 | bool | |
1817 | StoreEntry::swapoutPossible() | |
1818 | { | |
1819 | /* should we swap something out to disk? */ | |
bf8fe701 | 1820 | debugs(20, 7, "storeSwapOut: " << url()); |
1821 | debugs(20, 7, "storeSwapOut: store_status = " << storeStatusStr[store_status]); | |
62e76326 | 1822 | |
528b2c61 | 1823 | if (EBIT_TEST(flags, ENTRY_ABORTED)) { |
62e76326 | 1824 | assert(EBIT_TEST(flags, RELEASE_REQUEST)); |
c07cbbf4 | 1825 | swapOutFileClose(); |
62e76326 | 1826 | return false; |
528b2c61 | 1827 | } |
62e76326 | 1828 | |
528b2c61 | 1829 | if (EBIT_TEST(flags, ENTRY_SPECIAL)) { |
bf8fe701 | 1830 | debugs(20, 3, "storeSwapOut: " << url() << " SPECIAL"); |
62e76326 | 1831 | return false; |
528b2c61 | 1832 | } |
62e76326 | 1833 | |
528b2c61 | 1834 | return true; |
1835 | } | |
1836 | ||
1837 | void | |
1838 | StoreEntry::trimMemory() | |
1839 | { | |
7fef2365 | 1840 | /* |
1841 | * DPW 2007-05-09 | |
1842 | * Bug #1943. We must not let go any data for IN_MEMORY | |
1843 | * objects. We have to wait until the mem_status changes. | |
1844 | */ | |
1845 | if (mem_status == IN_MEMORY) | |
26ac0430 | 1846 | return; |
7fef2365 | 1847 | |
c07cbbf4 | 1848 | if (!swapOutAble()) { |
e1381638 AJ |
1849 | if (mem_obj->policyLowestOffsetToKeep(0) == 0) { |
1850 | /* Nothing to do */ | |
1851 | return; | |
1852 | } | |
62e76326 | 1853 | /* |
1854 | * Its not swap-able, and we're about to delete a chunk, | |
1855 | * so we must make it PRIVATE. This is tricky/ugly because | |
1856 | * for the most part, we treat swapable == cachable here. | |
1857 | */ | |
d88e3c49 | 1858 | releaseRequest(); |
62e76326 | 1859 | mem_obj->trimUnSwappable (); |
528b2c61 | 1860 | } else { |
62e76326 | 1861 | mem_obj->trimSwappable (); |
528b2c61 | 1862 | } |
1863 | } | |
62e76326 | 1864 | |
0655fa4d | 1865 | bool |
190154cf | 1866 | StoreEntry::modifiedSince(HttpRequest * request) const |
0655fa4d | 1867 | { |
1868 | int object_length; | |
1869 | time_t mod_time = lastmod; | |
1870 | ||
1871 | if (mod_time < 0) | |
1872 | mod_time = timestamp; | |
1873 | ||
bf8fe701 | 1874 | debugs(88, 3, "modifiedSince: '" << url() << "'"); |
0655fa4d | 1875 | |
4a7a3d56 | 1876 | debugs(88, 3, "modifiedSince: mod_time = " << mod_time); |
0655fa4d | 1877 | |
1878 | if (mod_time < 0) | |
1879 | return true; | |
1880 | ||
1881 | /* Find size of the object */ | |
1882 | object_length = getReply()->content_length; | |
1883 | ||
1884 | if (object_length < 0) | |
b37bde1e | 1885 | object_length = contentLen(); |
0655fa4d | 1886 | |
1887 | if (mod_time > request->ims) { | |
bf8fe701 | 1888 | debugs(88, 3, "--> YES: entry newer than client"); |
0655fa4d | 1889 | return true; |
1890 | } else if (mod_time < request->ims) { | |
bf8fe701 | 1891 | debugs(88, 3, "--> NO: entry older than client"); |
0655fa4d | 1892 | return false; |
1893 | } else if (request->imslen < 0) { | |
bf8fe701 | 1894 | debugs(88, 3, "--> NO: same LMT, no client length"); |
0655fa4d | 1895 | return false; |
1896 | } else if (request->imslen == object_length) { | |
bf8fe701 | 1897 | debugs(88, 3, "--> NO: same LMT, same length"); |
0655fa4d | 1898 | return false; |
1899 | } else { | |
bf8fe701 | 1900 | debugs(88, 3, "--> YES: same LMT, different length"); |
0655fa4d | 1901 | return true; |
1902 | } | |
1903 | } | |
1904 | ||
79c8035e AR |
1905 | bool |
1906 | StoreEntry::hasIfMatchEtag(const HttpRequest &request) const | |
1907 | { | |
1908 | const String reqETags = request.header.getList(HDR_IF_MATCH); | |
1909 | return hasOneOfEtags(reqETags, false); | |
1910 | } | |
1911 | ||
1912 | bool | |
1913 | StoreEntry::hasIfNoneMatchEtag(const HttpRequest &request) const | |
1914 | { | |
1915 | const String reqETags = request.header.getList(HDR_IF_NONE_MATCH); | |
1916 | // weak comparison is allowed only for HEAD or full-body GET requests | |
1917 | const bool allowWeakMatch = !request.flags.range && | |
b59e6847 | 1918 | (request.method == METHOD_GET || request.method == METHOD_HEAD); |
79c8035e AR |
1919 | return hasOneOfEtags(reqETags, allowWeakMatch); |
1920 | } | |
1921 | ||
1922 | /// whether at least one of the request ETags matches entity ETag | |
1923 | bool | |
1924 | StoreEntry::hasOneOfEtags(const String &reqETags, const bool allowWeakMatch) const | |
1925 | { | |
1926 | const ETag repETag = getReply()->header.getETag(HDR_ETAG); | |
1927 | if (!repETag.str) | |
1928 | return strListIsMember(&reqETags, "*", ','); | |
1929 | ||
1930 | bool matched = false; | |
1931 | const char *pos = NULL; | |
1932 | const char *item; | |
1933 | int ilen; | |
1934 | while (!matched && strListGetItem(&reqETags, ',', &item, &ilen, &pos)) { | |
1935 | if (!strncmp(item, "*", ilen)) | |
1936 | matched = true; | |
1937 | else { | |
1938 | String str; | |
1939 | str.append(item, ilen); | |
1940 | ETag reqETag; | |
1941 | if (etagParseInit(&reqETag, str.termedBuf())) { | |
1942 | matched = allowWeakMatch ? etagIsWeakEqual(repETag, reqETag) : | |
b59e6847 | 1943 | etagIsStrongEqual(repETag, reqETag); |
79c8035e AR |
1944 | } |
1945 | } | |
1946 | } | |
1947 | return matched; | |
1948 | } | |
1949 | ||
c8f4eac4 | 1950 | StorePointer |
1951 | StoreEntry::store() const | |
1952 | { | |
1953 | assert(0 <= swap_dirn && swap_dirn < Config.cacheSwap.n_configured); | |
1954 | return INDEXSD(swap_dirn); | |
1955 | } | |
1956 | ||
1957 | void | |
1958 | StoreEntry::unlink() | |
1959 | { | |
1960 | store()->unlink(*this); | |
1961 | } | |
0655fa4d | 1962 | |
aa18a4ca | 1963 | /* |
1964 | * return true if the entry is in a state where | |
1965 | * it can accept more data (ie with write() method) | |
1966 | */ | |
1967 | bool | |
1968 | StoreEntry::isAccepting() const | |
1969 | { | |
1970 | if (STORE_PENDING != store_status) | |
1971 | return false; | |
1972 | ||
1973 | if (EBIT_TEST(flags, ENTRY_ABORTED)) | |
1974 | return false; | |
1975 | ||
1976 | return true; | |
1977 | } | |
1978 | ||
e6ccf245 | 1979 | /* NullStoreEntry */ |
1980 | ||
1981 | NullStoreEntry NullStoreEntry::_instance; | |
1982 | ||
1983 | NullStoreEntry * | |
1984 | NullStoreEntry::getInstance() | |
1985 | { | |
1986 | return &_instance; | |
1987 | } | |
332dafa2 | 1988 | |
1989 | char const * | |
1990 | NullStoreEntry::getMD5Text() const | |
1991 | { | |
1992 | return "N/A"; | |
1993 | } | |
528b2c61 | 1994 | |
43ae1d95 | 1995 | void |
1996 | NullStoreEntry::operator delete(void*) | |
1997 | { | |
1998 | fatal ("Attempt to delete NullStoreEntry\n"); | |
1999 | } | |
2000 | ||
528b2c61 | 2001 | char const * |
2002 | NullStoreEntry::getSerialisedMetaData() | |
2003 | { | |
2004 | return NULL; | |
2005 | } | |
2006 | ||
32d002cb | 2007 | #if !_USE_INLINE_ |
528b2c61 | 2008 | #include "Store.cci" |
2009 | #endif |