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annotate src/c/request.c @ 1774:27fdd78bd2f5

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Avoid redundant rollbacks
author Adam Chlipala <adam@chlipala.net>
date Sat, 02 Jun 2012 10:54:49 -0400
parents 4d0b80dd4c37
children 69daa6d70299
rev   line source
adamc@1268 1 #include "config.h"
adamc@1268 2
adamc@853 3 #include <stdio.h>
adamc@853 4 #include <string.h>
adamc@853 5 #include <stdlib.h>
adamc@853 6 #include <sys/types.h>
adamc@853 7 #include <sys/socket.h>
adamc@853 8 #include <netinet/in.h>
adamc@853 9 #include <unistd.h>
adamc@853 10 #include <signal.h>
adamc@853 11
adamc@853 12 #include <pthread.h>
adamc@853 13
adamc@853 14 #include "urweb.h"
adamc@853 15
adamc@853 16 #define MAX_RETRIES 5
adamc@853 17
adamc@1152 18 void *memmem(const void *b1, size_t len1, const void *b2, size_t len2);
adamc@1152 19
adam@1327 20 static int try_rollback(uw_context ctx, int will_retry, void *logger_data, uw_logger log_error) {
adam@1327 21 int r = uw_rollback(ctx, will_retry);
adamc@853 22
adamc@853 23 if (r) {
adamc@856 24 log_error(logger_data, "Error running SQL ROLLBACK\n");
adamc@853 25 uw_reset(ctx);
adamc@1115 26 uw_write(ctx, "HTTP/1.1 500 Internal Server Error\r\n");
adamc@853 27 uw_write(ctx, "Content-type: text/plain\r\n\r\n");
adamc@853 28 uw_write(ctx, "Error running SQL ROLLBACK\n");
adamc@1115 29 uw_set_error_message(ctx, "Database error; you are probably out of storage space.");
adamc@853 30 }
adamc@853 31
adamc@853 32 return r;
adamc@853 33 }
adamc@853 34
adam@1446 35 uw_context uw_request_new_context(int id, uw_app *app, void *logger_data, uw_logger log_error, uw_logger log_debug) {
adam@1446 36 uw_context ctx = uw_init(id, logger_data, log_debug);
adamc@853 37 int retries_left = MAX_RETRIES;
adamc@1094 38 uw_set_app(ctx, app);
adamc@853 39
adamc@853 40 while (1) {
adamc@853 41 failure_kind fk = uw_begin_init(ctx);
adamc@853 42
adamc@853 43 if (fk == SUCCESS) {
adamc@856 44 log_debug(logger_data, "Database connection initialized.\n");
adamc@853 45 break;
adamc@853 46 } else if (fk == BOUNDED_RETRY) {
adamc@853 47 if (retries_left) {
adamc@856 48 log_debug(logger_data, "Initialization error triggers bounded retry: %s\n", uw_error_message(ctx));
adamc@853 49 --retries_left;
adamc@853 50 } else {
adamc@856 51 log_error(logger_data, "Fatal initialization error (out of retries): %s\n", uw_error_message(ctx));
adamc@853 52 uw_free(ctx);
adamc@853 53 return NULL;
adamc@853 54 }
adamc@853 55 } else if (fk == UNLIMITED_RETRY)
adamc@856 56 log_debug(logger_data, "Initialization error triggers unlimited retry: %s\n", uw_error_message(ctx));
adamc@853 57 else if (fk == FATAL) {
adamc@856 58 log_error(logger_data, "Fatal initialization error: %s\n", uw_error_message(ctx));
adamc@853 59 uw_free(ctx);
adamc@853 60 return NULL;
adamc@853 61 } else {
adamc@856 62 log_error(logger_data, "Unknown uw_begin_init return code!\n");
adamc@853 63 uw_free(ctx);
adamc@853 64 return NULL;
adamc@853 65 }
adamc@853 66 }
adamc@853 67
adamc@853 68 return ctx;
adamc@853 69 }
adamc@853 70
adam@1308 71 static void *ticker(void *data) {
adam@1308 72 while (1) {
adam@1308 73 usleep(100000);
adam@1308 74 ++uw_time;
adam@1308 75 }
adam@1308 76
adam@1308 77 return NULL;
adam@1308 78 }
adam@1308 79
adam@1349 80 typedef struct {
adam@1349 81 uw_app *app;
adam@1349 82 void *logger_data;
adam@1349 83 uw_logger log_error, log_debug;
adam@1349 84 } loggers;
adam@1349 85
adam@1349 86 typedef struct {
adam@1446 87 int id;
adam@1349 88 loggers *ls;
adam@1349 89 uw_periodic pdic;
adam@1349 90 } periodic;
adam@1349 91
adam@1349 92 static void *periodic_loop(void *data) {
adam@1349 93 periodic *p = (periodic *)data;
adam@1446 94 uw_context ctx = uw_request_new_context(p->id, p->ls->app, p->ls->logger_data, p->ls->log_error, p->ls->log_debug);
adam@1349 95
adam@1349 96 if (!ctx)
adam@1349 97 exit(1);
adam@1349 98
adam@1349 99 while (1) {
adam@1418 100 int retries_left = MAX_RETRIES;
adam@1418 101
adam@1349 102 failure_kind r;
adam@1349 103 do {
adam@1418 104 uw_reset(ctx);
adam@1349 105 r = uw_runCallback(ctx, p->pdic.callback);
adam@1418 106 if (r == BOUNDED_RETRY)
adam@1418 107 --retries_left;
adam@1418 108 else if (r == UNLIMITED_RETRY)
adam@1418 109 p->ls->log_debug(p->ls->logger_data, "Error triggers unlimited retry in periodic: %s\n", uw_error_message(ctx));
adam@1418 110 else if (r == BOUNDED_RETRY)
adam@1418 111 p->ls->log_debug(p->ls->logger_data, "Error triggers bounded retry in periodic: %s\n", uw_error_message(ctx));
adam@1418 112 else if (r == FATAL)
adam@1418 113 p->ls->log_error(p->ls->logger_data, "Fatal error: %s\n", uw_error_message(ctx));
adam@1418 114 if (r == FATAL || r == BOUNDED_RETRY || r == UNLIMITED_RETRY)
adam@1437 115 if (try_rollback(ctx, 0, p->ls->logger_data, p->ls->log_error))
adam@1437 116 return NULL;
adam@1418 117 } while (r == UNLIMITED_RETRY || (r == BOUNDED_RETRY && retries_left > 0));
adam@1418 118
adam@1418 119 if (r != FATAL && r != BOUNDED_RETRY)
adam@1418 120 uw_commit(ctx);
adam@1349 121
adam@1349 122 sleep(p->pdic.period);
adam@1349 123 };
adam@1349 124 }
adam@1349 125
adam@1522 126 static unsigned long long stackSize;
adam@1522 127
adam@1522 128 int pthread_create_big(pthread_t *outThread, void *foo, void *threadFunc, void *arg)
adam@1522 129 {
adam@1522 130 int err;
adam@1522 131 pthread_attr_t stackSizeAttribute;
adam@1522 132
adam@1522 133 err = pthread_attr_init(&stackSizeAttribute);
adam@1522 134 if (err) return err;
adam@1522 135
adam@1522 136 if (stackSize > 0) {
adam@1522 137 err = pthread_attr_setstacksize(&stackSizeAttribute, stackSize);
adam@1522 138 if (err) return err;
adam@1522 139 }
adam@1522 140
adam@1522 141 return pthread_create(outThread, &stackSizeAttribute, threadFunc, arg);
adam@1522 142 }
adam@1522 143
adamc@1094 144 void uw_request_init(uw_app *app, void *logger_data, uw_logger log_error, uw_logger log_debug) {
adamc@853 145 uw_context ctx;
adamc@853 146 failure_kind fk;
adam@1349 147 uw_periodic *ps;
adam@1349 148 loggers *ls = malloc(sizeof(loggers));
adam@1446 149 int id;
adam@1522 150 char *stackSize_s;
adam@1522 151
adam@1522 152 if ((stackSize_s = getenv("URWEB_STACK_SIZE")) != NULL && stackSize_s[0] != 0) {
adam@1522 153 stackSize = atoll(stackSize_s);
adam@1522 154
adam@1522 155 if (stackSize <= 0) {
adam@1522 156 fprintf(stderr, "Invalid stack size \"%s\"\n", stackSize_s);
adam@1522 157 exit(1);
adam@1522 158 }
adam@1522 159 }
adam@1349 160
adam@1349 161 ls->app = app;
adam@1349 162 ls->logger_data = logger_data;
adam@1349 163 ls->log_error = log_error;
adam@1349 164 ls->log_debug = log_debug;
adamc@853 165
adamc@853 166 uw_global_init();
adamc@1094 167 uw_app_init(app);
adamc@853 168
adam@1308 169 {
adam@1308 170 pthread_t thread;
adam@1308 171
adam@1522 172 if (uw_time_max && pthread_create_big(&thread, NULL, ticker, NULL)) {
adam@1308 173 fprintf(stderr, "Error creating ticker thread\n");
adam@1308 174 exit(1);
adam@1308 175 }
adam@1308 176 }
adam@1308 177
adam@1446 178 ctx = uw_request_new_context(0, app, logger_data, log_error, log_debug);
adamc@853 179
adamc@853 180 if (!ctx)
adamc@853 181 exit(1);
adamc@853 182
adamc@853 183 for (fk = uw_initialize(ctx); fk == UNLIMITED_RETRY; fk = uw_initialize(ctx)) {
adamc@856 184 log_debug(logger_data, "Unlimited retry during init: %s\n", uw_error_message(ctx));
adam@1327 185 uw_rollback(ctx, 1);
adamc@853 186 uw_reset(ctx);
adamc@853 187 }
adamc@853 188
adamc@853 189 if (fk != SUCCESS) {
adamc@856 190 log_error(logger_data, "Failed to initialize database! %s\n", uw_error_message(ctx));
adam@1327 191 uw_rollback(ctx, 0);
adamc@853 192 exit(1);
adamc@853 193 }
adamc@853 194
adamc@853 195 uw_free(ctx);
adam@1349 196
adam@1446 197 id = 1;
adam@1349 198 for (ps = app->periodics; ps->callback; ++ps) {
adam@1349 199 pthread_t thread;
adam@1349 200 periodic *arg = malloc(sizeof(periodic));
adam@1446 201 arg->id = id++;
adam@1349 202 arg->ls = ls;
adam@1349 203 arg->pdic = *ps;
adam@1349 204
adam@1522 205 if (pthread_create_big(&thread, NULL, periodic_loop, arg)) {
adam@1349 206 fprintf(stderr, "Error creating periodic thread\n");
adam@1349 207 exit(1);
adam@1349 208 }
adam@1349 209 }
adamc@853 210 }
adamc@853 211
adamc@853 212
adamc@853 213 typedef struct uw_rc {
adam@1370 214 size_t path_copy_size, queryString_size;
adam@1370 215 char *path_copy, *queryString;
adamc@853 216 } *uw_request_context;
adamc@853 217
adamc@853 218 uw_request_context uw_new_request_context(void) {
adamc@853 219 uw_request_context r = malloc(sizeof(struct uw_rc));
adam@1371 220 r->path_copy_size = 0;
adam@1371 221 r->queryString_size = 1;
adamc@853 222 r->path_copy = malloc(0);
adam@1371 223 r->queryString = malloc(1);
adamc@853 224 return r;
adamc@853 225 }
adamc@853 226
adamc@853 227 void uw_free_request_context(uw_request_context r) {
adamc@853 228 free(r->path_copy);
adam@1370 229 free(r->queryString);
adamc@853 230 free(r);
adamc@853 231 }
adamc@853 232
adamc@854 233 request_result uw_request(uw_request_context rc, uw_context ctx,
adamc@854 234 char *method, char *path, char *query_string,
adamc@854 235 char *body, size_t body_len,
adamc@856 236 void (*on_success)(uw_context), void (*on_failure)(uw_context),
adamc@856 237 void *logger_data, uw_logger log_error, uw_logger log_debug,
adamc@863 238 int sock,
adamc@863 239 int (*send)(int sockfd, const void *buf, size_t len),
adamc@863 240 int (*close)(int fd)) {
adamc@853 241 int retries_left = MAX_RETRIES;
adamc@853 242 failure_kind fk;
adamc@1134 243 int is_post = 0;
adamc@853 244 char *boundary = NULL;
adamc@1134 245 size_t boundary_len = 0;
adamc@854 246 char *inputs;
adamc@1094 247 const char *prefix = uw_get_url_prefix(ctx);
adamc@1169 248 char *s;
adam@1294 249 int had_error = 0;
adam@1294 250 char errmsg[ERROR_BUF_LEN];
adamc@1169 251
adam@1417 252 uw_reset(ctx);
adam@1446 253
adam@1371 254 rc->queryString[0] = 0;
adam@1371 255
adamc@1169 256 for (s = path; *s; ++s) {
adamc@1169 257 if (s[0] == '%' && s[1] == '2' && s[2] == '7') {
adamc@1169 258 s[0] = '\'';
adamc@1169 259 memmove(s+1, s+3, strlen(s+3)+1);
adamc@1169 260 }
adamc@1169 261 }
adamc@853 262
adamc@1066 263 uw_set_currentUrl(ctx, path);
adamc@1066 264
adamc@854 265 if (!strcmp(method, "POST")) {
adamc@853 266 char *clen_s = uw_Basis_requestHeader(ctx, "Content-length");
adamc@853 267 if (!clen_s) {
adamc@1037 268 clen_s = "0";
adamc@1037 269 /*log_error(logger_data, "No Content-length with POST\n");
adamc@1037 270 return FAILED;*/
adamc@853 271 }
adamc@853 272 int clen = atoi(clen_s);
adamc@853 273 if (clen < 0) {
adamc@856 274 log_error(logger_data, "Negative Content-length with POST\n");
adamc@853 275 return FAILED;
adamc@853 276 }
adamc@853 277
adamc@854 278 if (body_len < clen) {
adamc@856 279 log_error(logger_data, "Request doesn't contain all POST data (according to Content-Length)\n");
adamc@853 280 return FAILED;
adamc@853 281 }
adamc@853 282
adamc@853 283 is_post = 1;
adam@1386 284 uw_isPost(ctx);
adamc@853 285
adamc@853 286 clen_s = uw_Basis_requestHeader(ctx, "Content-type");
adamc@853 287 if (clen_s && !strncasecmp(clen_s, "multipart/form-data", 19)) {
adamc@853 288 if (strncasecmp(clen_s + 19, "; boundary=", 11)) {
adamc@856 289 log_error(logger_data, "Bad multipart boundary spec");
adamc@853 290 return FAILED;
adamc@853 291 }
adamc@853 292
adamc@853 293 boundary = clen_s + 28;
adamc@853 294 boundary[0] = '-';
adamc@853 295 boundary[1] = '-';
adamc@853 296 boundary_len = strlen(boundary);
adam@1347 297 } else if (clen_s && strcasecmp(clen_s, "application/x-www-form-urlencoded")) {
adam@1347 298 uw_Basis_postBody pb = {clen_s, body};
adam@1347 299 uw_postBody(ctx, pb);
adamc@853 300 }
adamc@854 301 } else if (strcmp(method, "GET")) {
adamc@856 302 log_error(logger_data, "Not ready for non-GET/POST command: %s\n", method);
adamc@853 303 return FAILED;
adamc@853 304 }
adamc@853 305
adamc@1094 306 if (!strncmp(path, prefix, strlen(prefix))
adamc@1094 307 && !strcmp(path + strlen(prefix), ".msgs")) {
adamc@853 308 char *id = uw_Basis_requestHeader(ctx, "UrWeb-Client");
adamc@853 309 char *pass = uw_Basis_requestHeader(ctx, "UrWeb-Pass");
adamc@853 310
adamc@853 311 if (sock < 0) {
adamc@856 312 log_error(logger_data, ".msgs requested, but not socket supplied\n");
adamc@853 313 return FAILED;
adamc@853 314 }
adamc@853 315
adamc@853 316 if (id && pass) {
adamc@853 317 unsigned idn = atoi(id);
adamc@864 318 uw_client_connect(idn, atoi(pass), sock, send, close, logger_data, log_error);
adam@1320 319 log_debug(logger_data, "Processed request for messages by client %u\n\n", idn);
adamc@853 320 return KEEP_OPEN;
adamc@853 321 }
adamc@853 322 else {
adamc@856 323 log_error(logger_data, "Missing fields in .msgs request: %s, %s\n\n", id, pass);
adamc@853 324 return FAILED;
adamc@853 325 }
adamc@853 326 }
adamc@853 327
adamc@853 328 if (boundary) {
adamc@854 329 char *part = body, *after_sub_headers, *header, *after_header;
adamc@853 330 size_t part_len;
adamc@853 331
adamc@853 332 part = strstr(part, boundary);
adamc@853 333 if (!part) {
adamc@856 334 log_error(logger_data, "Missing first multipart boundary\n");
adamc@853 335 return FAILED;
adamc@853 336 }
adamc@853 337 part += boundary_len;
adamc@853 338
adamc@853 339 while (1) {
adamc@853 340 char *name = NULL, *filename = NULL, *type = NULL;
adamc@853 341
adamc@853 342 if (part[0] == '-' && part[1] == '-')
adamc@853 343 break;
adamc@853 344
adamc@853 345 if (*part != '\r') {
adamc@856 346 log_error(logger_data, "No \\r after multipart boundary\n");
adamc@853 347 return FAILED;
adamc@853 348 }
adamc@853 349 ++part;
adamc@853 350 if (*part != '\n') {
adamc@856 351 log_error(logger_data, "No \\n after multipart boundary\n");
adamc@853 352 return FAILED;
adamc@853 353 }
adamc@853 354 ++part;
adamc@853 355
adamc@853 356 if (!(after_sub_headers = strstr(part, "\r\n\r\n"))) {
adamc@856 357 log_error(logger_data, "Missing end of headers after multipart boundary\n");
adamc@853 358 return FAILED;
adamc@853 359 }
adamc@853 360 after_sub_headers[2] = 0;
adamc@853 361 after_sub_headers += 4;
adamc@853 362
adamc@1134 363 for (header = part; (after_header = strstr(header, "\r\n")); header = after_header + 2) {
adamc@853 364 char *colon, *after_colon;
adamc@853 365
adamc@853 366 *after_header = 0;
adamc@853 367 if (!(colon = strchr(header, ':'))) {
adamc@856 368 log_error(logger_data, "Missing colon in multipart sub-header\n");
adamc@853 369 return FAILED;
adamc@853 370 }
adamc@853 371 *colon++ = 0;
adamc@853 372 if (*colon++ != ' ') {
adamc@856 373 log_error(logger_data, "No space after colon in multipart sub-header\n");
adamc@853 374 return FAILED;
adamc@853 375 }
adamc@853 376
adamc@853 377 if (!strcasecmp(header, "Content-Disposition")) {
adamc@853 378 if (strncmp(colon, "form-data; ", 11)) {
adamc@856 379 log_error(logger_data, "Multipart data is not \"form-data\"\n");
adamc@853 380 return FAILED;
adamc@853 381 }
adamc@853 382
adamc@1134 383 for (colon += 11; (after_colon = strchr(colon, '=')); colon = after_colon) {
adamc@853 384 char *data;
adamc@853 385 after_colon[0] = 0;
adamc@853 386 if (after_colon[1] != '"') {
adamc@856 387 log_error(logger_data, "Disposition setting is missing initial quote\n");
adamc@853 388 return FAILED;
adamc@853 389 }
adamc@853 390 data = after_colon+2;
adamc@853 391 if (!(after_colon = strchr(data, '"'))) {
adamc@856 392 log_error(logger_data, "Disposition setting is missing final quote\n");
adamc@853 393 return FAILED;
adamc@853 394 }
adamc@853 395 after_colon[0] = 0;
adamc@853 396 ++after_colon;
adamc@853 397 if (after_colon[0] == ';' && after_colon[1] == ' ')
adamc@853 398 after_colon += 2;
adamc@853 399
adamc@853 400 if (!strcasecmp(colon, "name"))
adamc@853 401 name = data;
adamc@853 402 else if (!strcasecmp(colon, "filename"))
adamc@853 403 filename = data;
adamc@853 404 }
adamc@853 405 } else if (!strcasecmp(header, "Content-Type")) {
adamc@853 406 type = colon;
adamc@853 407 }
adamc@853 408 }
adamc@853 409
adamc@854 410 part = memmem(after_sub_headers, body + body_len - after_sub_headers, boundary, boundary_len);
adamc@853 411 if (!part) {
adamc@856 412 log_error(logger_data, "Missing boundary after multipart payload\n");
adamc@853 413 return FAILED;
adamc@853 414 }
adamc@853 415 part[-2] = 0;
adamc@853 416 part_len = part - after_sub_headers - 2;
adamc@853 417 part[0] = 0;
adamc@853 418 part += boundary_len;
adamc@853 419
adamc@853 420 if (filename) {
adamc@853 421 uw_Basis_file f = {filename, type, {part_len, after_sub_headers}};
adamc@853 422
adamc@853 423 if (uw_set_file_input(ctx, name, f)) {
adamc@856 424 log_error(logger_data, "%s\n", uw_error_message(ctx));
adamc@853 425 return FAILED;
adamc@853 426 }
adamc@853 427 } else if (uw_set_input(ctx, name, after_sub_headers)) {
adamc@856 428 log_error(logger_data, "%s\n", uw_error_message(ctx));
adamc@853 429 return FAILED;
adamc@853 430 }
adamc@853 431 }
adamc@853 432 }
adam@1347 433 else if (!uw_hasPostBody(ctx)) {
adamc@854 434 inputs = is_post ? body : query_string;
adamc@853 435
adamc@853 436 if (inputs) {
adamc@853 437 char *name, *value;
adam@1370 438 int len = strlen(inputs);
adam@1370 439
adam@1370 440 if (len+1 > rc->queryString_size) {
adam@1370 441 rc->queryString_size = len+1;
adam@1370 442 rc->queryString = realloc(rc->queryString, len+1);
adam@1370 443 }
adam@1370 444 strcpy(rc->queryString, inputs);
adamc@853 445
adamc@853 446 while (*inputs) {
adamc@853 447 name = inputs;
adamc@1134 448 if ((inputs = strchr(inputs, '&')))
adamc@853 449 *inputs++ = 0;
adamc@853 450 else
adamc@853 451 inputs = strchr(name, 0);
adamc@853 452
adamc@1134 453 if ((value = strchr(name, '='))) {
adamc@853 454 *value++ = 0;
adamc@853 455 if (uw_set_input(ctx, name, value)) {
adamc@856 456 log_error(logger_data, "%s\n", uw_error_message(ctx));
adamc@853 457 return FAILED;
adamc@853 458 }
adamc@853 459 }
adamc@853 460 else if (uw_set_input(ctx, name, "")) {
adamc@856 461 log_error(logger_data, "%s\n", uw_error_message(ctx));
adamc@853 462 return FAILED;
adamc@853 463 }
adamc@853 464 }
adamc@853 465 }
adamc@853 466 }
adamc@853 467
adamc@853 468 while (1) {
adam@1371 469 uw_setQueryString(ctx, rc->queryString);
adam@1371 470
adam@1294 471 if (!had_error) {
adam@1294 472 size_t path_len = strlen(path);
adamc@853 473
adam@1294 474 on_success(ctx);
adamc@853 475
adam@1294 476 if (path_len + 1 > rc->path_copy_size) {
adam@1294 477 rc->path_copy_size = path_len + 1;
adam@1294 478 rc->path_copy = realloc(rc->path_copy, rc->path_copy_size);
adam@1294 479 }
adam@1294 480 strcpy(rc->path_copy, path);
adam@1308 481
adam@1308 482 uw_set_deadline(ctx, uw_time + uw_time_max);
adam@1294 483 fk = uw_begin(ctx, rc->path_copy);
adam@1308 484 } else {
adam@1308 485 uw_set_deadline(ctx, uw_time + uw_time_max);
adam@1294 486 fk = uw_begin_onError(ctx, errmsg);
adam@1308 487 }
adam@1294 488
adamc@1065 489 if (fk == SUCCESS || fk == RETURN_INDIRECTLY) {
adamc@853 490 uw_commit(ctx);
adam@1294 491 if (uw_has_error(ctx) && !had_error) {
adamc@1131 492 log_error(logger_data, "Fatal error: %s\n", uw_error_message(ctx));
adamc@1131 493 uw_reset_keep_error_message(ctx);
adamc@1131 494 on_failure(ctx);
adam@1294 495
adam@1294 496 if (uw_get_app(ctx)->on_error) {
adam@1294 497 had_error = 1;
adam@1294 498 strcpy(errmsg, uw_error_message(ctx));
adam@1294 499 } else {
adam@1294 500 uw_write_header(ctx, "Content-type: text/html\r\n");
adam@1294 501 uw_write(ctx, "<html><head><title>Fatal Error</title></head><body>");
adam@1294 502 uw_write(ctx, "Fatal error: ");
adam@1294 503 uw_write(ctx, uw_error_message(ctx));
adam@1294 504 uw_write(ctx, "\n</body></html>");
adamc@1131 505
adam@1774 506 try_rollback(ctx, 0, logger_data, log_error);
adam@1774 507
adam@1294 508 return FAILED;
adam@1294 509 }
adamc@1131 510 } else
adam@1294 511 return had_error ? FAILED : SERVED;
adamc@853 512 } else if (fk == BOUNDED_RETRY) {
adamc@853 513 if (retries_left) {
adamc@856 514 log_debug(logger_data, "Error triggers bounded retry: %s\n", uw_error_message(ctx));
adamc@853 515 --retries_left;
adamc@853 516 }
adamc@853 517 else {
adamc@856 518 log_error(logger_data, "Fatal error (out of retries): %s\n", uw_error_message(ctx));
adamc@853 519
adam@1294 520 if (!had_error && uw_get_app(ctx)->on_error) {
adam@1294 521 had_error = 1;
adam@1294 522 strcpy(errmsg, uw_error_message(ctx));
adam@1294 523 } else {
adam@1294 524 uw_reset_keep_error_message(ctx);
adam@1294 525 on_failure(ctx);
adam@1294 526 uw_write_header(ctx, "Content-type: text/plain\r\n");
adam@1294 527 uw_write(ctx, "Fatal error (out of retries): ");
adam@1294 528 uw_write(ctx, uw_error_message(ctx));
adam@1294 529 uw_write(ctx, "\n");
adam@1294 530
adam@1774 531 try_rollback(ctx, 0, logger_data, log_error);
adam@1774 532
adam@1294 533 return FAILED;
adam@1294 534 }
adamc@853 535 }
adamc@853 536 } else if (fk == UNLIMITED_RETRY)
adamc@856 537 log_debug(logger_data, "Error triggers unlimited retry: %s\n", uw_error_message(ctx));
adamc@853 538 else if (fk == FATAL) {
adamc@856 539 log_error(logger_data, "Fatal error: %s\n", uw_error_message(ctx));
adamc@853 540
adam@1294 541 if (uw_get_app(ctx)->on_error && !had_error) {
adam@1294 542 had_error = 1;
adam@1294 543 strcpy(errmsg, uw_error_message(ctx));
adam@1294 544 } else {
adam@1294 545 uw_reset_keep_error_message(ctx);
adam@1294 546 on_failure(ctx);
adam@1294 547 uw_write_header(ctx, "Content-type: text/html\r\n");
adam@1294 548 uw_write(ctx, "<html><head><title>Fatal Error</title></head><body>");
adam@1294 549 uw_write(ctx, "Fatal error: ");
adam@1294 550 uw_write(ctx, uw_error_message(ctx));
adam@1294 551 uw_write(ctx, "\n</body></html>");
adamc@853 552
adam@1774 553 try_rollback(ctx, 0, logger_data, log_error);
adam@1774 554
adam@1294 555 return FAILED;
adam@1294 556 }
adamc@853 557 } else {
adamc@856 558 log_error(logger_data, "Unknown uw_handle return code!\n");
adamc@853 559
adam@1294 560 if (uw_get_app(ctx)->on_error && !had_error) {
adam@1294 561 had_error = 1;
adam@1294 562 strcpy(errmsg, "Unknown uw_handle return code");
adam@1294 563 } else {
adam@1294 564 uw_reset_keep_request(ctx);
adam@1294 565 on_failure(ctx);
adam@1294 566 uw_write_header(ctx, "Content-type: text/plain\r\n");
adam@1294 567 uw_write(ctx, "Unknown uw_handle return code!\n");
adamc@853 568
adam@1774 569 try_rollback(ctx, 0, logger_data, log_error);
adam@1774 570
adam@1294 571 return FAILED;
adam@1294 572 }
adamc@853 573 }
adamc@853 574
adam@1327 575 if (try_rollback(ctx, 1, logger_data, log_error))
adamc@853 576 return FAILED;
adamc@853 577
adamc@853 578 uw_reset_keep_request(ctx);
adamc@853 579 }
adamc@853 580 }
adamc@853 581
adamc@853 582 void *client_pruner(void *data) {
adamc@856 583 loggers *ls = (loggers *)data;
adam@1446 584 uw_context ctx = uw_request_new_context(0, ls->app, ls->logger_data, ls->log_error, ls->log_debug);
adamc@853 585
adamc@853 586 if (!ctx)
adamc@853 587 exit(1);
adamc@853 588
adamc@853 589 while (1) {
adamc@853 590 uw_prune_clients(ctx);
adamc@853 591 sleep(5);
adamc@853 592 }
adamc@853 593 }