projects / thirdparty / pdns.git / blame
| Commit | Line | Data |
|---|---|---|
| 903853f4 | 1 | #!/usr/bin/env python |
| 1ea747c0 | 2 | import base64 |
| 903853f4 RG |
3 | import time |
| 4 | import dns | |
| 5 | from dnsdisttests import DNSDistTest | |
| 6 | ||
| 7 | class TestCaching(DNSDistTest): | |
| 8 | ||
| 9 | _config_template = """ | |
| fe1c60f2 | 10 | pc = newPacketCache(100, 86400, 1) |
| 903853f4 RG |
11 | getPool(""):setCache(pc) |
| 12 | addAction(makeRule("nocache.cache.tests.powerdns.com."), SkipCacheAction()) | |
| 816dff3d RG |
13 | function skipViaLua(dq) |
| 14 | dq.skipCache = true | |
| 15 | return DNSAction.None, "" | |
| 16 | end | |
| 17 | addLuaAction("nocachevialua.cache.tests.powerdns.com.", skipViaLua) | |
| 903853f4 RG |
18 | newServer{address="127.0.0.1:%s"} |
| 19 | """ | |
| fe1c60f2 | 20 | |
| 903853f4 RG |
21 | def testCached(self): |
| 22 | """ | |
| 23 | Cache: Served from cache | |
| 24 | ||
| 25 | dnsdist is configured to cache entries, we are sending several | |
| 26 | identical requests and checking that the backend only receive | |
| 27 | the first one. | |
| 28 | """ | |
| 29 | numberOfQueries = 10 | |
| 30 | name = 'cached.cache.tests.powerdns.com.' | |
| 31 | query = dns.message.make_query(name, 'AAAA', 'IN') | |
| 32 | response = dns.message.make_response(query) | |
| 33 | rrset = dns.rrset.from_text(name, | |
| 34 | 3600, | |
| 35 | dns.rdataclass.IN, | |
| 36 | dns.rdatatype.AAAA, | |
| 37 | '::1') | |
| 38 | response.answer.append(rrset) | |
| 39 | ||
| 40 | # first query to fill the cache | |
| 41 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 42 | self.assertTrue(receivedQuery) | |
| 43 | self.assertTrue(receivedResponse) | |
| 44 | receivedQuery.id = query.id | |
| 45 | self.assertEquals(query, receivedQuery) | |
| 46 | self.assertEquals(receivedResponse, response) | |
| 47 | ||
| 48 | for _ in range(numberOfQueries): | |
| 49 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 50 | self.assertEquals(receivedResponse, response) | |
| 51 | ||
| 52 | total = 0 | |
| 02bbf9eb RG |
53 | for key in self._responsesCounter: |
| 54 | total += self._responsesCounter[key] | |
| 903853f4 RG |
55 | TestCaching._responsesCounter[key] = 0 |
| 56 | ||
| 57 | self.assertEquals(total, 1) | |
| 58 | ||
| 59 | # TCP should not be cached | |
| 60 | # first query to fill the cache | |
| 61 | (receivedQuery, receivedResponse) = self.sendTCPQuery(query, response) | |
| 62 | self.assertTrue(receivedQuery) | |
| 63 | self.assertTrue(receivedResponse) | |
| 64 | receivedQuery.id = query.id | |
| 65 | self.assertEquals(query, receivedQuery) | |
| 66 | self.assertEquals(receivedResponse, response) | |
| 67 | ||
| 68 | for _ in range(numberOfQueries): | |
| 69 | (_, receivedResponse) = self.sendTCPQuery(query, response=None, useQueue=False) | |
| 70 | self.assertEquals(receivedResponse, response) | |
| 71 | ||
| 72 | total = 0 | |
| 02bbf9eb RG |
73 | for key in self._responsesCounter: |
| 74 | total += self._responsesCounter[key] | |
| 903853f4 RG |
75 | TestCaching._responsesCounter[key] = 0 |
| 76 | ||
| 77 | self.assertEquals(total, 1) | |
| 78 | ||
| 79 | def testSkipCache(self): | |
| 80 | """ | |
| 81 | Cache: SkipCacheAction | |
| 82 | ||
| 83 | dnsdist is configured to not cache entries for nocache.cache.tests.powerdns.com. | |
| 84 | we are sending several requests and checking that the backend get them all. | |
| 85 | """ | |
| 86 | name = 'nocache.cache.tests.powerdns.com.' | |
| 87 | numberOfQueries = 10 | |
| 88 | query = dns.message.make_query(name, 'AAAA', 'IN') | |
| 89 | response = dns.message.make_response(query) | |
| 816dff3d RG |
90 | rrset = dns.rrset.from_text(name, |
| 91 | 3600, | |
| 92 | dns.rdataclass.IN, | |
| 93 | dns.rdatatype.AAAA, | |
| 94 | '::1') | |
| 95 | response.answer.append(rrset) | |
| 96 | ||
| 97 | for _ in range(numberOfQueries): | |
| 98 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 99 | self.assertTrue(receivedQuery) | |
| 100 | self.assertTrue(receivedResponse) | |
| 101 | receivedQuery.id = query.id | |
| 102 | self.assertEquals(query, receivedQuery) | |
| 103 | self.assertEquals(receivedResponse, response) | |
| 104 | ||
| 105 | (receivedQuery, receivedResponse) = self.sendTCPQuery(query, response) | |
| 106 | self.assertTrue(receivedQuery) | |
| 107 | self.assertTrue(receivedResponse) | |
| 108 | receivedQuery.id = query.id | |
| 109 | self.assertEquals(query, receivedQuery) | |
| 110 | self.assertEquals(receivedResponse, response) | |
| 111 | ||
| 02bbf9eb RG |
112 | for key in self._responsesCounter: |
| 113 | value = self._responsesCounter[key] | |
| 816dff3d RG |
114 | self.assertEquals(value, numberOfQueries) |
| 115 | ||
| 116 | def testSkipCacheViaLua(self): | |
| 117 | """ | |
| 118 | Cache: SkipCache via Lua | |
| 119 | ||
| 120 | dnsdist is configured to not cache entries for nocachevialua.cache.tests.powerdns.com. | |
| 121 | we are sending several requests and checking that the backend get them all. | |
| 122 | """ | |
| 123 | name = 'nocachevialua.cache.tests.powerdns.com.' | |
| 124 | numberOfQueries = 10 | |
| 125 | query = dns.message.make_query(name, 'AAAA', 'IN') | |
| 126 | response = dns.message.make_response(query) | |
| 903853f4 RG |
127 | rrset = dns.rrset.from_text(name, |
| 128 | 3600, | |
| 129 | dns.rdataclass.IN, | |
| 130 | dns.rdatatype.AAAA, | |
| 131 | '::1') | |
| 132 | response.answer.append(rrset) | |
| 133 | ||
| 134 | for _ in range(numberOfQueries): | |
| 135 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 136 | self.assertTrue(receivedQuery) | |
| 137 | self.assertTrue(receivedResponse) | |
| 138 | receivedQuery.id = query.id | |
| 139 | self.assertEquals(query, receivedQuery) | |
| 140 | self.assertEquals(receivedResponse, response) | |
| 141 | ||
| 142 | (receivedQuery, receivedResponse) = self.sendTCPQuery(query, response) | |
| 143 | self.assertTrue(receivedQuery) | |
| 144 | self.assertTrue(receivedResponse) | |
| 145 | receivedQuery.id = query.id | |
| 146 | self.assertEquals(query, receivedQuery) | |
| 147 | self.assertEquals(receivedResponse, response) | |
| 148 | ||
| 02bbf9eb RG |
149 | for key in self._responsesCounter: |
| 150 | value = self._responsesCounter[key] | |
| 903853f4 RG |
151 | self.assertEquals(value, numberOfQueries) |
| 152 | ||
| 153 | def testCacheExpiration(self): | |
| 154 | """ | |
| 155 | Cache: Cache expiration | |
| 156 | ||
| 157 | dnsdist is configured to cache entries, we are sending one request | |
| 158 | (cache miss) with a very short TTL, checking that the next requests | |
| 159 | are cached. Then we wait for the TTL to expire, check that the | |
| 160 | next request is a miss but the following one a hit. | |
| 161 | """ | |
| 162 | ttl = 2 | |
| 163 | misses = 0 | |
| 164 | name = 'cacheexpiration.cache.tests.powerdns.com.' | |
| 165 | query = dns.message.make_query(name, 'AAAA', 'IN') | |
| 166 | response = dns.message.make_response(query) | |
| 167 | rrset = dns.rrset.from_text(name, | |
| 168 | ttl, | |
| 169 | dns.rdataclass.IN, | |
| 170 | dns.rdatatype.AAAA, | |
| 171 | '::1') | |
| 172 | response.answer.append(rrset) | |
| 173 | ||
| 174 | # first query to fill the cache | |
| 175 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 176 | self.assertTrue(receivedQuery) | |
| 177 | self.assertTrue(receivedResponse) | |
| 178 | receivedQuery.id = query.id | |
| 179 | self.assertEquals(query, receivedQuery) | |
| 180 | self.assertEquals(receivedResponse, response) | |
| 181 | misses += 1 | |
| 182 | ||
| 183 | # next queries should hit the cache | |
| 184 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 185 | self.assertEquals(receivedResponse, response) | |
| 186 | ||
| 187 | # now we wait a bit for the cache entry to expire | |
| 188 | time.sleep(ttl + 1) | |
| 189 | ||
| 190 | # next query should be a miss, fill the cache again | |
| 191 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 192 | self.assertTrue(receivedQuery) | |
| 193 | self.assertTrue(receivedResponse) | |
| 194 | receivedQuery.id = query.id | |
| 195 | self.assertEquals(query, receivedQuery) | |
| 196 | self.assertEquals(receivedResponse, response) | |
| 197 | misses += 1 | |
| 198 | ||
| 199 | # following queries should hit the cache again | |
| 200 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 201 | self.assertEquals(receivedResponse, response) | |
| 202 | ||
| 203 | total = 0 | |
| 02bbf9eb RG |
204 | for key in self._responsesCounter: |
| 205 | total += self._responsesCounter[key] | |
| 903853f4 RG |
206 | |
| 207 | self.assertEquals(total, misses) | |
| 208 | ||
| 209 | def testCacheExpirationDifferentSets(self): | |
| 210 | """ | |
| 211 | Cache: Cache expiration with different sets | |
| 212 | ||
| 213 | dnsdist is configured to cache entries, we are sending one request | |
| 214 | (cache miss) whose response has a long and a very short TTL, | |
| 215 | checking that the next requests are cached. Then we wait for the | |
| 216 | short TTL to expire, check that the | |
| 217 | next request is a miss but the following one a hit. | |
| 218 | """ | |
| 219 | ttl = 2 | |
| 220 | misses = 0 | |
| 221 | name = 'cacheexpirationdifferentsets.cache.tests.powerdns.com.' | |
| 222 | query = dns.message.make_query(name, 'AAAA', 'IN') | |
| 223 | response = dns.message.make_response(query) | |
| 224 | rrset = dns.rrset.from_text(name, | |
| 225 | ttl, | |
| 226 | dns.rdataclass.IN, | |
| 227 | dns.rdatatype.CNAME, | |
| 228 | 'cname.cacheexpirationdifferentsets.cache.tests.powerdns.com.') | |
| 229 | response.answer.append(rrset) | |
| 230 | rrset = dns.rrset.from_text('cname.cacheexpirationdifferentsets.cache.tests.powerdns.com.', | |
| 231 | ttl + 3600, | |
| 232 | dns.rdataclass.IN, | |
| 233 | dns.rdatatype.A, | |
| 234 | '192.2.0.1') | |
| 235 | response.additional.append(rrset) | |
| 236 | ||
| 237 | # first query to fill the cache | |
| 238 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 239 | self.assertTrue(receivedQuery) | |
| 240 | self.assertTrue(receivedResponse) | |
| 241 | receivedQuery.id = query.id | |
| 242 | self.assertEquals(query, receivedQuery) | |
| 243 | self.assertEquals(receivedResponse, response) | |
| 244 | misses += 1 | |
| 245 | ||
| 246 | # next queries should hit the cache | |
| 247 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 248 | self.assertEquals(receivedResponse, response) | |
| 249 | ||
| 250 | # now we wait a bit for the cache entry to expire | |
| 251 | time.sleep(ttl + 1) | |
| 252 | ||
| 253 | # next query should be a miss, fill the cache again | |
| 254 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 255 | self.assertTrue(receivedQuery) | |
| 256 | self.assertTrue(receivedResponse) | |
| 257 | receivedQuery.id = query.id | |
| 258 | self.assertEquals(query, receivedQuery) | |
| 259 | self.assertEquals(receivedResponse, response) | |
| 260 | misses += 1 | |
| 261 | ||
| 262 | # following queries should hit the cache again | |
| 263 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 264 | self.assertEquals(receivedResponse, response) | |
| 265 | ||
| 266 | total = 0 | |
| 02bbf9eb RG |
267 | for key in self._responsesCounter: |
| 268 | total += self._responsesCounter[key] | |
| 903853f4 RG |
269 | |
| 270 | self.assertEquals(total, misses) | |
| 271 | ||
| 272 | def testCacheDecreaseTTL(self): | |
| 273 | """ | |
| 274 | Cache: Cache decreases TTL | |
| 275 | ||
| 276 | dnsdist is configured to cache entries, we are sending one request | |
| 277 | (cache miss) and verify that the cache hits have a decreasing TTL. | |
| 278 | """ | |
| 279 | ttl = 600 | |
| 280 | misses = 0 | |
| 281 | name = 'cachedecreasettl.cache.tests.powerdns.com.' | |
| 282 | query = dns.message.make_query(name, 'AAAA', 'IN') | |
| 283 | response = dns.message.make_response(query) | |
| 284 | rrset = dns.rrset.from_text(name, | |
| 285 | ttl, | |
| 286 | dns.rdataclass.IN, | |
| 287 | dns.rdatatype.AAAA, | |
| 288 | '::1') | |
| 289 | response.answer.append(rrset) | |
| 290 | ||
| 291 | # first query to fill the cache | |
| 292 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 293 | self.assertTrue(receivedQuery) | |
| 294 | self.assertTrue(receivedResponse) | |
| 295 | receivedQuery.id = query.id | |
| 296 | self.assertEquals(query, receivedQuery) | |
| 297 | self.assertEquals(receivedResponse, response) | |
| 298 | misses += 1 | |
| 299 | ||
| 300 | # next queries should hit the cache | |
| 301 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 302 | self.assertEquals(receivedResponse, response) | |
| 303 | for an in receivedResponse.answer: | |
| 304 | self.assertTrue(an.ttl <= ttl) | |
| 305 | ||
| 306 | # now we wait a bit for the TTL to decrease | |
| 307 | time.sleep(1) | |
| 308 | ||
| 309 | # next queries should hit the cache | |
| 310 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 311 | self.assertEquals(receivedResponse, response) | |
| 312 | for an in receivedResponse.answer: | |
| 313 | self.assertTrue(an.ttl < ttl) | |
| 314 | ||
| 315 | total = 0 | |
| 02bbf9eb RG |
316 | for key in self._responsesCounter: |
| 317 | total += self._responsesCounter[key] | |
| 903853f4 RG |
318 | |
| 319 | self.assertEquals(total, misses) | |
| 320 | ||
| 321 | def testCacheDifferentCase(self): | |
| 322 | """ | |
| 323 | Cache: Cache matches different case | |
| 324 | ||
| 325 | dnsdist is configured to cache entries, we are sending one request | |
| 326 | (cache miss) and verify that the same one with a different case | |
| 327 | matches. | |
| 328 | """ | |
| 329 | ttl = 600 | |
| 330 | name = 'cachedifferentcase.cache.tests.powerdns.com.' | |
| 331 | differentCaseName = 'CacheDifferentCASE.cache.tests.powerdns.com.' | |
| 332 | query = dns.message.make_query(name, 'AAAA', 'IN') | |
| 333 | differentCaseQuery = dns.message.make_query(differentCaseName, 'AAAA', 'IN') | |
| 334 | response = dns.message.make_response(query) | |
| 335 | differentCaseResponse = dns.message.make_response(differentCaseQuery) | |
| 336 | rrset = dns.rrset.from_text(name, | |
| 337 | ttl, | |
| 338 | dns.rdataclass.IN, | |
| 339 | dns.rdatatype.AAAA, | |
| 340 | '::1') | |
| 341 | response.answer.append(rrset) | |
| 342 | differentCaseResponse.answer.append(rrset) | |
| 343 | ||
| 344 | # first query to fill the cache | |
| 345 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 346 | self.assertTrue(receivedQuery) | |
| 347 | self.assertTrue(receivedResponse) | |
| 348 | receivedQuery.id = query.id | |
| 349 | self.assertEquals(query, receivedQuery) | |
| 350 | self.assertEquals(receivedResponse, response) | |
| 351 | ||
| 352 | # different case query should still hit the cache | |
| 353 | (_, receivedResponse) = self.sendUDPQuery(differentCaseQuery, response=None, useQueue=False) | |
| 354 | self.assertEquals(receivedResponse, differentCaseResponse) | |
| 355 | ||
| 356 | ||
| 357 | class TestCachingWithExistingEDNS(DNSDistTest): | |
| 358 | ||
| 359 | _config_template = """ | |
| 360 | pc = newPacketCache(5, 86400, 1) | |
| 361 | getPool(""):setCache(pc) | |
| 362 | newServer{address="127.0.0.1:%s"} | |
| 363 | """ | |
| 364 | def testCacheWithEDNS(self): | |
| 365 | """ | |
| 366 | Cache: Cache should not match different EDNS value | |
| 367 | ||
| 368 | dnsdist is configured to cache entries, we are sending one request | |
| 369 | (cache miss) and verify that the same one with a different EDNS UDP | |
| 370 | Payload size is not served from the cache. | |
| 371 | """ | |
| 372 | misses = 0 | |
| 373 | name = 'cachedifferentedns.cache.tests.powerdns.com.' | |
| 374 | query = dns.message.make_query(name, 'A', 'IN', use_edns=True, payload=512) | |
| 375 | response = dns.message.make_response(query) | |
| 376 | rrset = dns.rrset.from_text(name, | |
| 377 | 3600, | |
| 378 | dns.rdataclass.IN, | |
| 379 | dns.rdatatype.A, | |
| 380 | '127.0.0.1') | |
| 381 | response.answer.append(rrset) | |
| 382 | ||
| 383 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 384 | self.assertTrue(receivedQuery) | |
| 385 | self.assertTrue(receivedResponse) | |
| 386 | receivedQuery.id = query.id | |
| 387 | self.assertEquals(query, receivedQuery) | |
| 388 | self.assertEquals(response, receivedResponse) | |
| 389 | misses += 1 | |
| 390 | ||
| 391 | query = dns.message.make_query(name, 'A', 'IN', use_edns=True, payload=4096) | |
| 392 | response = dns.message.make_response(query) | |
| 393 | rrset = dns.rrset.from_text(name, | |
| 394 | 3600, | |
| 395 | dns.rdataclass.IN, | |
| 396 | dns.rdatatype.A, | |
| 397 | '127.0.0.1') | |
| 398 | response.answer.append(rrset) | |
| 399 | ||
| 400 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 401 | self.assertTrue(receivedQuery) | |
| 402 | self.assertTrue(receivedResponse) | |
| 403 | receivedQuery.id = query.id | |
| 404 | self.assertEquals(query, receivedQuery) | |
| 405 | self.assertEquals(response, receivedResponse) | |
| 406 | misses += 1 | |
| 407 | ||
| 408 | total = 0 | |
| 02bbf9eb RG |
409 | for key in self._responsesCounter: |
| 410 | total += self._responsesCounter[key] | |
| 903853f4 RG |
411 | |
| 412 | self.assertEquals(total, misses) | |
| fe1c60f2 RG |
413 | |
| 414 | class TestCachingCacheFull(DNSDistTest): | |
| 415 | ||
| 416 | _config_template = """ | |
| 417 | pc = newPacketCache(1, 86400, 1) | |
| 418 | getPool(""):setCache(pc) | |
| 419 | newServer{address="127.0.0.1:%s"} | |
| 420 | """ | |
| 421 | def testCacheFull(self): | |
| 422 | """ | |
| 423 | Cache: No new entries are cached when the cache is full | |
| 424 | ||
| 425 | """ | |
| 426 | misses = 0 | |
| 427 | name = 'cachenotfullyet.cache.tests.powerdns.com.' | |
| 428 | query = dns.message.make_query(name, 'A', 'IN') | |
| 429 | response = dns.message.make_response(query) | |
| 430 | rrset = dns.rrset.from_text(name, | |
| 431 | 3600, | |
| 432 | dns.rdataclass.IN, | |
| 433 | dns.rdatatype.A, | |
| 434 | '127.0.0.1') | |
| 435 | response.answer.append(rrset) | |
| 436 | ||
| 437 | # Miss | |
| 438 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 439 | self.assertTrue(receivedQuery) | |
| 440 | self.assertTrue(receivedResponse) | |
| 441 | receivedQuery.id = query.id | |
| 442 | self.assertEquals(query, receivedQuery) | |
| 443 | self.assertEquals(response, receivedResponse) | |
| 444 | misses += 1 | |
| 445 | ||
| 446 | # next queries should hit the cache | |
| 447 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 448 | self.assertEquals(receivedResponse, response) | |
| 449 | ||
| 450 | # ok, now the cache is full, send another query | |
| 451 | name = 'cachefull.cache.tests.powerdns.com.' | |
| 452 | query = dns.message.make_query(name, 'AAAA', 'IN') | |
| 453 | response = dns.message.make_response(query) | |
| 454 | rrset = dns.rrset.from_text(name, | |
| 455 | 3600, | |
| 456 | dns.rdataclass.IN, | |
| 457 | dns.rdatatype.AAAA, | |
| 458 | '::1') | |
| 459 | response.answer.append(rrset) | |
| 460 | ||
| 461 | # Miss | |
| 462 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 463 | self.assertTrue(receivedQuery) | |
| 464 | self.assertTrue(receivedResponse) | |
| 465 | receivedQuery.id = query.id | |
| 466 | self.assertEquals(query, receivedQuery) | |
| 467 | self.assertEquals(response, receivedResponse) | |
| 468 | misses += 1 | |
| 469 | ||
| 470 | # next queries should NOT hit the cache | |
| 471 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 472 | self.assertTrue(receivedQuery) | |
| 473 | self.assertTrue(receivedResponse) | |
| 474 | receivedQuery.id = query.id | |
| 475 | self.assertEquals(query, receivedQuery) | |
| 476 | self.assertEquals(response, receivedResponse) | |
| 477 | misses += 1 | |
| 478 | ||
| 479 | total = 0 | |
| 02bbf9eb RG |
480 | for key in self._responsesCounter: |
| 481 | total += self._responsesCounter[key] | |
| fe1c60f2 RG |
482 | |
| 483 | self.assertEquals(total, misses) | |
| 1ea747c0 RG |
484 | |
| 485 | class TestCachingNoStale(DNSDistTest): | |
| 486 | ||
| 487 | _consoleKey = DNSDistTest.generateConsoleKey() | |
| 488 | _consoleKeyB64 = base64.b64encode(_consoleKey) | |
| 489 | _config_params = ['_consoleKeyB64', '_consolePort', '_testServerPort'] | |
| 490 | _config_template = """ | |
| 491 | pc = newPacketCache(100, 86400, 1) | |
| 492 | getPool(""):setCache(pc) | |
| 493 | setKey("%s") | |
| 494 | controlSocket("127.0.0.1:%s") | |
| 495 | newServer{address="127.0.0.1:%s"} | |
| 496 | """ | |
| 497 | def testCacheNoStale(self): | |
| 498 | """ | |
| 499 | Cache: Cache entry, set backend down, we should not get a stale entry | |
| 500 | ||
| 501 | """ | |
| 502 | ttl = 1 | |
| 503 | name = 'nostale.cache.tests.powerdns.com.' | |
| 504 | query = dns.message.make_query(name, 'A', 'IN') | |
| 505 | response = dns.message.make_response(query) | |
| 506 | rrset = dns.rrset.from_text(name, | |
| 507 | 1, | |
| 508 | dns.rdataclass.IN, | |
| 509 | dns.rdatatype.A, | |
| 510 | '127.0.0.1') | |
| 511 | response.answer.append(rrset) | |
| 512 | ||
| 513 | # Miss | |
| 514 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 515 | self.assertTrue(receivedQuery) | |
| 516 | self.assertTrue(receivedResponse) | |
| 517 | receivedQuery.id = query.id | |
| 518 | self.assertEquals(query, receivedQuery) | |
| 519 | self.assertEquals(response, receivedResponse) | |
| 520 | ||
| 521 | # next queries should hit the cache | |
| 522 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 523 | self.assertEquals(receivedResponse, response) | |
| 524 | ||
| 525 | # ok, we mark the backend as down | |
| 526 | self.sendConsoleCommand("getServer(0):setDown()") | |
| 527 | # and we wait for the entry to expire | |
| 528 | time.sleep(ttl + 1) | |
| 529 | ||
| 530 | # we should NOT get a cached, stale, entry | |
| 531 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 532 | self.assertEquals(receivedResponse, None) | |
| 533 | ||
| 534 | ||
| 535 | class TestCachingStale(DNSDistTest): | |
| 536 | ||
| 537 | _consoleKey = DNSDistTest.generateConsoleKey() | |
| 538 | _consoleKeyB64 = base64.b64encode(_consoleKey) | |
| 539 | _staleCacheTTL = 60 | |
| 540 | _config_params = ['_staleCacheTTL', '_consoleKeyB64', '_consolePort', '_testServerPort'] | |
| 541 | _config_template = """ | |
| 542 | pc = newPacketCache(100, 86400, 1, %s) | |
| 543 | getPool(""):setCache(pc) | |
| 544 | setStaleCacheEntriesTTL(600) | |
| 545 | setKey("%s") | |
| 546 | controlSocket("127.0.0.1:%s") | |
| 547 | newServer{address="127.0.0.1:%s"} | |
| 548 | """ | |
| 549 | def testCacheStale(self): | |
| 550 | """ | |
| 551 | Cache: Cache entry, set backend down, get stale entry | |
| 552 | ||
| 553 | """ | |
| 554 | misses = 0 | |
| 555 | ttl = 1 | |
| 556 | name = 'stale.cache.tests.powerdns.com.' | |
| 557 | query = dns.message.make_query(name, 'A', 'IN') | |
| 558 | response = dns.message.make_response(query) | |
| 559 | rrset = dns.rrset.from_text(name, | |
| 560 | ttl, | |
| 561 | dns.rdataclass.IN, | |
| 562 | dns.rdatatype.A, | |
| 563 | '127.0.0.1') | |
| 564 | response.answer.append(rrset) | |
| 565 | ||
| 566 | # Miss | |
| 567 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 568 | self.assertTrue(receivedQuery) | |
| 569 | self.assertTrue(receivedResponse) | |
| 570 | receivedQuery.id = query.id | |
| 571 | self.assertEquals(query, receivedQuery) | |
| 572 | self.assertEquals(response, receivedResponse) | |
| 573 | misses += 1 | |
| 574 | ||
| 575 | # next queries should hit the cache | |
| 576 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 577 | self.assertEquals(receivedResponse, response) | |
| 578 | ||
| 579 | # ok, we mark the backend as down | |
| 580 | self.sendConsoleCommand("getServer(0):setDown()") | |
| 581 | # and we wait for the entry to expire | |
| 582 | time.sleep(ttl + 1) | |
| 583 | ||
| 584 | # we should get a cached, stale, entry | |
| 585 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 586 | self.assertEquals(receivedResponse, response) | |
| 587 | for an in receivedResponse.answer: | |
| 588 | self.assertEquals(an.ttl, self._staleCacheTTL) | |
| 589 | ||
| 590 | total = 0 | |
| 02bbf9eb RG |
591 | for key in self._responsesCounter: |
| 592 | total += self._responsesCounter[key] | |
| 1ea747c0 RG |
593 | |
| 594 | self.assertEquals(total, misses) | |
| 595 | ||
| 596 | class TestCacheManagement(DNSDistTest): | |
| 597 | ||
| 598 | _consoleKey = DNSDistTest.generateConsoleKey() | |
| 599 | _consoleKeyB64 = base64.b64encode(_consoleKey) | |
| 600 | _config_params = ['_consoleKeyB64', '_consolePort', '_testServerPort'] | |
| 601 | _config_template = """ | |
| 602 | pc = newPacketCache(100, 86400, 1) | |
| 603 | getPool(""):setCache(pc) | |
| 604 | setKey("%s") | |
| 605 | controlSocket("127.0.0.1:%s") | |
| 606 | newServer{address="127.0.0.1:%s"} | |
| 607 | """ | |
| 608 | def testCacheExpunge(self): | |
| 609 | """ | |
| 610 | Cache: Expunge | |
| 611 | ||
| 612 | """ | |
| 613 | misses = 0 | |
| 614 | ttl = 600 | |
| 615 | name = 'expunge.cache.tests.powerdns.com.' | |
| 616 | query = dns.message.make_query(name, 'A', 'IN') | |
| 617 | response = dns.message.make_response(query) | |
| 618 | rrset = dns.rrset.from_text(name, | |
| 619 | ttl, | |
| 620 | dns.rdataclass.IN, | |
| 621 | dns.rdatatype.A, | |
| 622 | '127.0.0.1') | |
| 623 | response.answer.append(rrset) | |
| 624 | ||
| 625 | # Miss | |
| 626 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 627 | self.assertTrue(receivedQuery) | |
| 628 | self.assertTrue(receivedResponse) | |
| 629 | receivedQuery.id = query.id | |
| 630 | self.assertEquals(query, receivedQuery) | |
| 631 | self.assertEquals(response, receivedResponse) | |
| 632 | misses += 1 | |
| 633 | ||
| 634 | # next queries should hit the cache | |
| 635 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 636 | self.assertEquals(receivedResponse, response) | |
| 637 | ||
| 638 | # remove cached entries | |
| 639 | self.sendConsoleCommand("getPool(\"\"):getCache():expunge(0)") | |
| 640 | ||
| 641 | # Miss | |
| 642 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 643 | self.assertTrue(receivedQuery) | |
| 644 | self.assertTrue(receivedResponse) | |
| 645 | receivedQuery.id = query.id | |
| 646 | self.assertEquals(query, receivedQuery) | |
| 647 | self.assertEquals(response, receivedResponse) | |
| 648 | misses += 1 | |
| 649 | ||
| 650 | # next queries should hit the cache again | |
| 651 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 652 | self.assertEquals(receivedResponse, response) | |
| 653 | ||
| 654 | total = 0 | |
| 02bbf9eb RG |
655 | for key in self._responsesCounter: |
| 656 | total += self._responsesCounter[key] | |
| 1ea747c0 RG |
657 | |
| 658 | self.assertEquals(total, misses) | |
| 659 | ||
| 660 | def testCacheExpungeByName(self): | |
| 661 | """ | |
| 662 | Cache: Expunge by name | |
| 663 | ||
| 664 | """ | |
| 665 | misses = 0 | |
| 666 | ttl = 600 | |
| 667 | name = 'expungebyname.cache.tests.powerdns.com.' | |
| 668 | query = dns.message.make_query(name, 'A', 'IN') | |
| 669 | response = dns.message.make_response(query) | |
| 670 | rrset = dns.rrset.from_text(name, | |
| 671 | ttl, | |
| 672 | dns.rdataclass.IN, | |
| 673 | dns.rdatatype.A, | |
| 674 | '127.0.0.1') | |
| 675 | response.answer.append(rrset) | |
| 676 | ||
| 677 | name2 = 'expungebynameother.cache.tests.powerdns.com.' | |
| 678 | query2 = dns.message.make_query(name2, 'A', 'IN') | |
| 679 | response2 = dns.message.make_response(query2) | |
| 680 | rrset2 = dns.rrset.from_text(name2, | |
| 681 | ttl, | |
| 682 | dns.rdataclass.IN, | |
| 683 | dns.rdatatype.A, | |
| 684 | '127.0.0.1') | |
| 685 | response2.answer.append(rrset2) | |
| 686 | ||
| 687 | # Miss | |
| 688 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 689 | self.assertTrue(receivedQuery) | |
| 690 | self.assertTrue(receivedResponse) | |
| 691 | receivedQuery.id = query.id | |
| 692 | self.assertEquals(query, receivedQuery) | |
| 693 | self.assertEquals(response, receivedResponse) | |
| 694 | misses += 1 | |
| 695 | ||
| 696 | # next queries should hit the cache | |
| 697 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 698 | self.assertEquals(receivedResponse, response) | |
| 699 | ||
| 700 | # cache another entry | |
| 701 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query2, response2) | |
| 702 | self.assertTrue(receivedQuery) | |
| 703 | self.assertTrue(receivedResponse) | |
| 704 | receivedQuery.id = query2.id | |
| 705 | self.assertEquals(query2, receivedQuery) | |
| 706 | self.assertEquals(response2, receivedResponse) | |
| 707 | misses += 1 | |
| 708 | ||
| 709 | # queries for name and name 2 should hit the cache | |
| 710 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 711 | self.assertEquals(receivedResponse, response) | |
| 712 | ||
| 713 | (_, receivedResponse) = self.sendUDPQuery(query2, response=None, useQueue=False) | |
| 714 | self.assertEquals(receivedResponse, response2) | |
| 715 | ||
| 716 | # remove cached entries from name | |
| 717 | self.sendConsoleCommand("getPool(\"\"):getCache():expungeByName(newDNSName(\"" + name + "\"))") | |
| 718 | ||
| 719 | # Miss for name | |
| 720 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 721 | self.assertTrue(receivedQuery) | |
| 722 | self.assertTrue(receivedResponse) | |
| 723 | receivedQuery.id = query.id | |
| 724 | self.assertEquals(query, receivedQuery) | |
| 725 | self.assertEquals(response, receivedResponse) | |
| 726 | misses += 1 | |
| 727 | ||
| 728 | # next queries for name should hit the cache again | |
| 729 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 730 | self.assertEquals(receivedResponse, response) | |
| 731 | ||
| 732 | # queries for name2 should still hit the cache | |
| 733 | (_, receivedResponse) = self.sendUDPQuery(query2, response=None, useQueue=False) | |
| 734 | self.assertEquals(receivedResponse, response2) | |
| 735 | ||
| 736 | total = 0 | |
| 02bbf9eb RG |
737 | for key in self._responsesCounter: |
| 738 | total += self._responsesCounter[key] | |
| 1ea747c0 RG |
739 | |
| 740 | self.assertEquals(total, misses) | |
| 741 | ||
| 742 | def testCacheExpungeByNameAndType(self): | |
| 743 | """ | |
| 744 | Cache: Expunge by name and type | |
| 745 | ||
| 746 | """ | |
| 747 | misses = 0 | |
| 748 | ttl = 600 | |
| 749 | name = 'expungebynameandtype.cache.tests.powerdns.com.' | |
| 750 | query = dns.message.make_query(name, 'A', 'IN') | |
| 751 | response = dns.message.make_response(query) | |
| 752 | rrset = dns.rrset.from_text(name, | |
| 753 | ttl, | |
| 754 | dns.rdataclass.IN, | |
| 755 | dns.rdatatype.A, | |
| 756 | '127.0.0.1') | |
| 757 | response.answer.append(rrset) | |
| 758 | ||
| 759 | query2 = dns.message.make_query(name, 'AAAA', 'IN') | |
| 760 | response2 = dns.message.make_response(query2) | |
| 761 | rrset2 = dns.rrset.from_text(name, | |
| 762 | ttl, | |
| 763 | dns.rdataclass.IN, | |
| 764 | dns.rdatatype.AAAA, | |
| 765 | '::1') | |
| 766 | response2.answer.append(rrset2) | |
| 767 | ||
| 768 | # Miss | |
| 769 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 770 | self.assertTrue(receivedQuery) | |
| 771 | self.assertTrue(receivedResponse) | |
| 772 | receivedQuery.id = query.id | |
| 773 | self.assertEquals(query, receivedQuery) | |
| 774 | self.assertEquals(response, receivedResponse) | |
| 775 | misses += 1 | |
| 776 | ||
| 777 | # next queries should hit the cache | |
| 778 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 779 | self.assertEquals(receivedResponse, response) | |
| 780 | ||
| 781 | # cache another entry | |
| 782 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query2, response2) | |
| 783 | self.assertTrue(receivedQuery) | |
| 784 | self.assertTrue(receivedResponse) | |
| 785 | receivedQuery.id = query2.id | |
| 786 | self.assertEquals(query2, receivedQuery) | |
| 787 | self.assertEquals(response2, receivedResponse) | |
| 788 | misses += 1 | |
| 789 | ||
| 790 | # queries for name A and AAAA should hit the cache | |
| 791 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 792 | self.assertEquals(receivedResponse, response) | |
| 793 | ||
| 794 | (_, receivedResponse) = self.sendUDPQuery(query2, response=None, useQueue=False) | |
| 795 | self.assertEquals(receivedResponse, response2) | |
| 796 | ||
| 797 | # remove cached entries from name A | |
| 798 | self.sendConsoleCommand("getPool(\"\"):getCache():expungeByName(newDNSName(\"" + name + "\"), dnsdist.A)") | |
| 799 | ||
| 800 | # Miss for name A | |
| 801 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 802 | self.assertTrue(receivedQuery) | |
| 803 | self.assertTrue(receivedResponse) | |
| 804 | receivedQuery.id = query.id | |
| 805 | self.assertEquals(query, receivedQuery) | |
| 806 | self.assertEquals(response, receivedResponse) | |
| 807 | misses += 1 | |
| 808 | ||
| 809 | # next queries for name A should hit the cache again | |
| 810 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 811 | self.assertEquals(receivedResponse, response) | |
| 812 | ||
| 813 | # queries for name AAAA should still hit the cache | |
| 814 | (_, receivedResponse) = self.sendUDPQuery(query2, response=None, useQueue=False) | |
| 815 | self.assertEquals(receivedResponse, response2) | |
| 816 | ||
| 817 | total = 0 | |
| 02bbf9eb RG |
818 | for key in self._responsesCounter: |
| 819 | total += self._responsesCounter[key] | |
| 1ea747c0 | 820 | self.assertEquals(total, misses) |
| cc8cefe1 RG |
821 | |
| 822 | class TestCachingTTL(DNSDistTest): | |
| 823 | ||
| 824 | _maxCacheTTL = 86400 | |
| 825 | _minCacheTTL = 600 | |
| 826 | _config_params = ['_maxCacheTTL', '_minCacheTTL', '_testServerPort'] | |
| 827 | _config_template = """ | |
| 828 | pc = newPacketCache(1000, %s, %s) | |
| 829 | getPool(""):setCache(pc) | |
| 830 | newServer{address="127.0.0.1:%s"} | |
| 831 | """ | |
| 832 | def testCacheShortTTL(self): | |
| 833 | """ | |
| 834 | Cache: Entries with a TTL shorter than minTTL | |
| 835 | ||
| 836 | """ | |
| 837 | misses = 0 | |
| 838 | ttl = 60 | |
| 839 | name = 'ttltooshort.cache.tests.powerdns.com.' | |
| 840 | query = dns.message.make_query(name, 'A', 'IN') | |
| 841 | response = dns.message.make_response(query) | |
| 842 | rrset = dns.rrset.from_text(name, | |
| 843 | ttl, | |
| 844 | dns.rdataclass.IN, | |
| 845 | dns.rdatatype.A, | |
| 846 | '127.0.0.1') | |
| 847 | response.answer.append(rrset) | |
| 848 | ||
| 849 | # Miss | |
| 850 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 851 | self.assertTrue(receivedQuery) | |
| 852 | self.assertTrue(receivedResponse) | |
| 853 | receivedQuery.id = query.id | |
| 854 | self.assertEquals(query, receivedQuery) | |
| 855 | self.assertEquals(response, receivedResponse) | |
| 856 | for an in receivedResponse.answer: | |
| 857 | self.assertEquals(an.ttl, ttl) | |
| 858 | misses += 1 | |
| 859 | ||
| 860 | # We should not have been cached | |
| 861 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 862 | self.assertTrue(receivedQuery) | |
| 863 | self.assertTrue(receivedResponse) | |
| 864 | receivedQuery.id = query.id | |
| 865 | self.assertEquals(query, receivedQuery) | |
| 866 | self.assertEquals(response, receivedResponse) | |
| 867 | for an in receivedResponse.answer: | |
| 868 | self.assertEquals(an.ttl, ttl) | |
| 869 | misses += 1 | |
| 870 | ||
| 871 | total = 0 | |
| 872 | for key in self._responsesCounter: | |
| 873 | total += self._responsesCounter[key] | |
| 874 | ||
| 875 | self.assertEquals(total, misses) | |
| 876 | ||
| 877 | class TestCachingLongTTL(DNSDistTest): | |
| 878 | ||
| 879 | _maxCacheTTL = 2 | |
| 880 | _config_params = ['_maxCacheTTL', '_testServerPort'] | |
| 881 | _config_template = """ | |
| 882 | pc = newPacketCache(1000, %s) | |
| 883 | getPool(""):setCache(pc) | |
| 884 | newServer{address="127.0.0.1:%s"} | |
| 885 | """ | |
| 886 | def testCacheLongTTL(self): | |
| 887 | """ | |
| 888 | Cache: Entries with a longer TTL than the maximum | |
| 889 | ||
| 890 | """ | |
| 891 | misses = 0 | |
| 892 | ttl = 172800 | |
| 893 | name = 'longttl.cache.tests.powerdns.com.' | |
| 894 | query = dns.message.make_query(name, 'A', 'IN') | |
| 895 | response = dns.message.make_response(query) | |
| 896 | rrset = dns.rrset.from_text(name, | |
| 897 | ttl, | |
| 898 | dns.rdataclass.IN, | |
| 899 | dns.rdatatype.A, | |
| 900 | '127.0.0.1') | |
| 901 | response.answer.append(rrset) | |
| 902 | ||
| 903 | # Miss | |
| 904 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 905 | self.assertTrue(receivedQuery) | |
| 906 | self.assertTrue(receivedResponse) | |
| 907 | receivedQuery.id = query.id | |
| 908 | self.assertEquals(query, receivedQuery) | |
| 909 | self.assertEquals(response, receivedResponse) | |
| 910 | for an in receivedResponse.answer: | |
| 911 | self.assertEquals(an.ttl, ttl) | |
| 912 | misses += 1 | |
| 913 | ||
| 914 | # next queries should hit the cache | |
| 915 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 916 | self.assertEquals(receivedResponse, response) | |
| 917 | for an in receivedResponse.answer: | |
| 918 | self.assertTrue(an.ttl <= ttl) | |
| 919 | ||
| 920 | time.sleep(self._maxCacheTTL + 1) | |
| 921 | ||
| 922 | # we should not have cached for longer than max cache | |
| 923 | # so it should be a miss | |
| 924 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 925 | self.assertTrue(receivedQuery) | |
| 926 | self.assertTrue(receivedResponse) | |
| 927 | receivedQuery.id = query.id | |
| 928 | self.assertEquals(query, receivedQuery) | |
| 929 | self.assertEquals(response, receivedResponse) | |
| 930 | for an in receivedResponse.answer: | |
| 931 | self.assertEquals(an.ttl, ttl) | |
| 932 | misses += 1 | |
| 933 | ||
| 934 | total = 0 | |
| 935 | for key in self._responsesCounter: | |
| 936 | total += self._responsesCounter[key] | |
| 937 | ||
| 938 | self.assertEquals(total, misses) | |
| 2714396e RG |
939 | |
| 940 | class TestCachingFailureTTL(DNSDistTest): | |
| 941 | ||
| 942 | _failureCacheTTL = 2 | |
| 943 | _config_params = ['_failureCacheTTL', '_testServerPort'] | |
| 944 | _config_template = """ | |
| 945 | pc = newPacketCache(1000, 86400, 0, %d, 60) | |
| 946 | getPool(""):setCache(pc) | |
| 947 | newServer{address="127.0.0.1:%s"} | |
| 948 | """ | |
| 949 | def testCacheServFailTTL(self): | |
| 950 | """ | |
| 951 | Cache: ServFail TTL | |
| 952 | ||
| 953 | """ | |
| 954 | misses = 0 | |
| 955 | name = 'servfail.failure.cache.tests.powerdns.com.' | |
| 956 | query = dns.message.make_query(name, 'A', 'IN') | |
| 957 | response = dns.message.make_response(query) | |
| 958 | response.set_rcode(dns.rcode.SERVFAIL) | |
| 959 | ||
| 960 | # Miss | |
| 961 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 962 | self.assertTrue(receivedQuery) | |
| 963 | self.assertTrue(receivedResponse) | |
| 964 | receivedQuery.id = query.id | |
| 965 | self.assertEquals(query, receivedQuery) | |
| 966 | self.assertEquals(response, receivedResponse) | |
| 967 | misses += 1 | |
| 968 | ||
| 969 | # next queries should hit the cache | |
| 970 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 971 | self.assertEquals(receivedResponse, response) | |
| 972 | ||
| 973 | time.sleep(self._failureCacheTTL + 1) | |
| 974 | ||
| 975 | # we should not have cached for longer than failure cache | |
| 976 | # so it should be a miss | |
| 977 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 978 | self.assertTrue(receivedQuery) | |
| 979 | self.assertTrue(receivedResponse) | |
| 980 | receivedQuery.id = query.id | |
| 981 | self.assertEquals(query, receivedQuery) | |
| 982 | self.assertEquals(response, receivedResponse) | |
| 983 | misses += 1 | |
| 984 | ||
| 985 | total = 0 | |
| 986 | for key in self._responsesCounter: | |
| 987 | total += self._responsesCounter[key] | |
| 988 | ||
| 989 | self.assertEquals(total, misses) | |
| 990 | ||
| 991 | def testCacheRefusedTTL(self): | |
| 992 | """ | |
| 993 | Cache: Refused TTL | |
| 994 | ||
| 995 | """ | |
| 996 | misses = 0 | |
| 997 | name = 'refused.failure.cache.tests.powerdns.com.' | |
| 998 | query = dns.message.make_query(name, 'A', 'IN') | |
| 999 | response = dns.message.make_response(query) | |
| 1000 | response.set_rcode(dns.rcode.REFUSED) | |
| 1001 | ||
| 1002 | # Miss | |
| 1003 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 1004 | self.assertTrue(receivedQuery) | |
| 1005 | self.assertTrue(receivedResponse) | |
| 1006 | receivedQuery.id = query.id | |
| 1007 | self.assertEquals(query, receivedQuery) | |
| 1008 | self.assertEquals(response, receivedResponse) | |
| 1009 | misses += 1 | |
| 1010 | ||
| 1011 | # next queries should hit the cache | |
| 1012 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 1013 | self.assertEquals(receivedResponse, response) | |
| 1014 | ||
| 1015 | time.sleep(self._failureCacheTTL + 1) | |
| 1016 | ||
| 1017 | # we should not have cached for longer than failure cache | |
| 1018 | # so it should be a miss | |
| 1019 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 1020 | self.assertTrue(receivedQuery) | |
| 1021 | self.assertTrue(receivedResponse) | |
| 1022 | receivedQuery.id = query.id | |
| 1023 | self.assertEquals(query, receivedQuery) | |
| 1024 | self.assertEquals(response, receivedResponse) | |
| 1025 | misses += 1 | |
| 1026 | ||
| 1027 | total = 0 | |
| 1028 | for key in self._responsesCounter: | |
| 1029 | total += self._responsesCounter[key] | |
| 1030 | ||
| 1031 | self.assertEquals(total, misses) | |
| 1032 | ||
| 1033 | def testCacheHeaderOnlyRefusedTTL(self): | |
| 1034 | """ | |
| 1035 | Cache: Header-Only Refused TTL | |
| 1036 | ||
| 1037 | """ | |
| 1038 | misses = 0 | |
| 1039 | name = 'header-only-refused.failure.cache.tests.powerdns.com.' | |
| 1040 | query = dns.message.make_query(name, 'A', 'IN') | |
| 1041 | response = dns.message.make_response(query) | |
| 1042 | response.set_rcode(dns.rcode.REFUSED) | |
| 1043 | response.question = [] | |
| 1044 | ||
| 1045 | # Miss | |
| 1046 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 1047 | self.assertTrue(receivedQuery) | |
| 1048 | self.assertTrue(receivedResponse) | |
| 1049 | receivedQuery.id = query.id | |
| 1050 | self.assertEquals(query, receivedQuery) | |
| 1051 | self.assertEquals(response, receivedResponse) | |
| 1052 | misses += 1 | |
| 1053 | ||
| 1054 | # next queries should hit the cache | |
| 1055 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) | |
| 1056 | self.assertEquals(receivedResponse, response) | |
| 1057 | ||
| 1058 | time.sleep(self._failureCacheTTL + 1) | |
| 1059 | ||
| 1060 | # we should not have cached for longer than failure cache | |
| 1061 | # so it should be a miss | |
| 1062 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
| 1063 | self.assertTrue(receivedQuery) | |
| 1064 | self.assertTrue(receivedResponse) | |
| 1065 | receivedQuery.id = query.id | |
| 1066 | self.assertEquals(query, receivedQuery) | |
| 1067 | self.assertEquals(response, receivedResponse) | |
| 1068 | misses += 1 | |
| 1069 | ||
| 1070 | total = 0 | |
| 1071 | for key in self._responsesCounter: | |
| 1072 | total += self._responsesCounter[key] | |
| 1073 | ||
| 1074 | self.assertEquals(total, misses) |