tests/src/ctdb_persistent.c

   1 /*
   2    simple tool to test persistent databases
   3
   4    Copyright (C) Andrew Tridgell  2006-2007
   5    Copyright (c) Ronnie sahlberg  2007
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "lib/events/events.h"
  23 #include "system/filesys.h"
  24 #include "popt.h"
  25 #include "cmdline.h"
  26 #include "include/ctdb_protocol.h"
  27
  28 #include <sys/time.h>
  29 #include <time.h>
  30
  31 static struct timeval tp1,tp2;
  32
  33 static void start_timer(void)
  34 {
  35         gettimeofday(&tp1,NULL);
  36 }
  37
  38 static double end_timer(void)
  39 {
  40         gettimeofday(&tp2,NULL);
  41         return (tp2.tv_sec + (tp2.tv_usec*1.0e-6)) -
  42                 (tp1.tv_sec + (tp1.tv_usec*1.0e-6));
  43 }
  44
  45 static int timelimit = 10;
  46
  47 static unsigned int pnn;
  48
  49 static TDB_DATA old_data;
  50
  51 static int success = true;
  52
  53 static void each_second(struct event_context *ev, struct timed_event *te,
  54                                          struct timeval t, void *private_data)
  55 {
  56         struct ctdb_context *ctdb = talloc_get_type(private_data, struct ctdb_context);
  57         int i;
  58         uint32_t *old_counters;
  59
  60
  61         printf("[%4u] Counters: ", getpid());
  62         old_counters = (uint32_t *)old_data.dptr;
  63         for (i=0;i<old_data.dsize/sizeof(uint32_t); i++) {
  64                 printf("%6u ", old_counters[i]);
  65         }
  66         printf("\n");
  67
  68         event_add_timed(ev, ctdb, timeval_current_ofs(1, 0), each_second, ctdb);
  69 }
  70
  71 static void check_counters(struct ctdb_context *ctdb, TDB_DATA data)
  72 {
  73         int i;
  74         uint32_t *counters, *old_counters;
  75         unsigned char *tmp_dptr;
  76
  77         counters     = (uint32_t *)data.dptr;
  78         old_counters = (uint32_t *)old_data.dptr;
  79
  80         /* check that all the counters are monotonic increasing */
  81         for (i=0; i<old_data.dsize/sizeof(uint32_t); i++) {
  82                 if (counters[i]<old_counters[i]) {
  83                         printf("[%4u] ERROR: counters has decreased for node %u  From %u to %u\n",
  84                                getpid(), i, old_counters[i], counters[i]);
  85                         success = false;
  86                 }
  87         }
  88
  89         if (old_data.dsize != data.dsize) {
  90                 old_data.dsize = data.dsize;
  91                 tmp_dptr = talloc_realloc_size(ctdb, old_data.dptr, old_data.dsize);
  92                 if (tmp_dptr == NULL) {
  93                         printf("[%4u] ERROR: talloc_realloc_size failed.\n", getpid());
  94                         success = false;
  95                         return;
  96                 } else {
  97                         old_data.dptr = tmp_dptr;
  98                 }
  99         }
 100
 101         memcpy(old_data.dptr, data.dptr, data.dsize);
 102 }
 103
 104
 105
 106 static void test_store_records(struct ctdb_context *ctdb, struct event_context *ev)
 107 {
 108         TDB_DATA key;
 109         struct ctdb_db_context *ctdb_db;
 110
 111         ctdb_db = ctdb_db_handle(ctdb, "persistent.tdb");
 112
 113         key.dptr = discard_const("testkey");
 114         key.dsize = strlen((const char *)key.dptr)+1;
 115
 116         start_timer();
 117         while (end_timer() < timelimit) {
 118                 TDB_DATA data;
 119                 TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
 120                 struct ctdb_transaction_handle *h;
 121                 int ret;
 122                 uint32_t *counters;
 123
 124                 h = ctdb_transaction_start(ctdb_db, tmp_ctx);
 125                 if (h == NULL) {
 126                         printf("Failed to start transaction on node %d\n",
 127                                ctdb_get_pnn(ctdb));
 128                         talloc_free(tmp_ctx);
 129                         return;
 130                 }
 131
 132                 ret = ctdb_transaction_fetch(h, tmp_ctx, key, &data);
 133                 if (ret != 0) {
 134                         DEBUG(DEBUG_ERR,("Failed to fetch record\n"));
 135                         exit(1);
 136                 }
 137
 138                 if (data.dsize < sizeof(uint32_t) * (pnn+1)) {
 139                         unsigned char *ptr = data.dptr;
 140
 141                         data.dptr = talloc_zero_size(tmp_ctx, sizeof(uint32_t) * (pnn+1));
 142                         memcpy(data.dptr, ptr, data.dsize);
 143                         talloc_free(ptr);
 144
 145                         data.dsize = sizeof(uint32_t) * (pnn+1);
 146                 }
 147
 148                 if (data.dptr == NULL) {
 149                         printf("Failed to realloc array\n");
 150                         talloc_free(tmp_ctx);
 151                         return;
 152                 }
 153
 154                 counters = (uint32_t *)data.dptr;
 155
 156                 /* bump our counter */
 157                 counters[pnn]++;
 158
 159                 ret = ctdb_transaction_store(h, key, data);
 160                 if (ret != 0) {
 161                         DEBUG(DEBUG_ERR,("Failed to store record\n"));
 162                         exit(1);
 163                 }
 164
 165                 ret = ctdb_transaction_commit(h);
 166                 if (ret != 0) {
 167                         DEBUG(DEBUG_ERR,("Failed to commit transaction\n"));
 168                         //exit(1);
 169                 }
 170
 171                 /* store the counters and verify that they are sane */
 172                 if (pnn == 0) {
 173                         check_counters(ctdb, data);
 174                 }
 175
 176                 talloc_free(tmp_ctx);
 177         }
 178
 179 }
 180
 181 /*
 182   main program
 183 */
 184 int main(int argc, const char *argv[])
 185 {
 186         struct ctdb_context *ctdb;
 187         struct ctdb_db_context *ctdb_db;
 188         int unsafe_writes = 0;
 189         struct poptOption popt_options[] = {
 190                 POPT_AUTOHELP
 191                 POPT_CTDB_CMDLINE
 192                 { "timelimit", 't', POPT_ARG_INT, &timelimit, 0, "timelimit", "integer" },
 193                 { "unsafe-writes", 'u', POPT_ARG_NONE, &unsafe_writes, 0, "do not use tdb transactions when writing", NULL },
 194                 POPT_TABLEEND
 195         };
 196         int ret, opt;
 197         const char **extra_argv;
 198         int extra_argc = 0;
 199         poptContext pc;
 200         struct event_context *ev;
 201
 202         setlinebuf(stdout);
 203
 204         pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
 205
 206         while ((opt = poptGetNextOpt(pc)) != -1) {
 207                 switch (opt) {
 208                 default:
 209                         fprintf(stderr, "Invalid option %s: %s\n",
 210                                 poptBadOption(pc, 0), poptStrerror(opt));
 211                         exit(1);
 212                 }
 213         }
 214
 215         /* setup the remaining options for the main program to use */
 216         extra_argv = poptGetArgs(pc);
 217         if (extra_argv) {
 218                 extra_argv++;
 219                 while (extra_argv[extra_argc]) extra_argc++;
 220         }
 221
 222         ev = event_context_init(NULL);
 223
 224         ctdb = ctdb_cmdline_client(ev);
 225         if (ctdb == NULL) {
 226                 printf("Could not attach to daemon\n");
 227                 return 1;
 228         }
 229
 230         /* attach to a specific database */
 231         if (unsafe_writes == 1) {
 232           ret = ctdb_attachdb(ctdb, "persistent.tdb", true, TDB_NOSYNC, &ctdb_db);
 233         } else {
 234           ret = ctdb_attachdb(ctdb, "persistent.tdb", true, 0, &ctdb_db);
 235         }
 236
 237         if (ret) {
 238                 printf("ctdb_attach failed - %s\n", ctdb_errstr(ctdb));
 239                 exit(1);
 240         }
 241
 242         printf("Waiting for cluster\n");
 243         while (1) {
 244                 uint32_t recmode=1;
 245                 ctdb_ctrl_getrecmode(ctdb, ctdb, timeval_zero(), CTDB_CURRENT_NODE, &recmode);
 246                 if (recmode == 0) break;
 247                 event_loop_once(ev);
 248         }
 249
 250         pnn = ctdb_get_pnn(ctdb);
 251         printf("Starting test on node %u. running for %u seconds\n", pnn, timelimit);
 252
 253         if (pnn == 0) {
 254                 event_add_timed(ev, ctdb, timeval_current_ofs(1, 0), each_second, ctdb);
 255         }
 256
 257         test_store_records(ctdb, ev);
 258
 259         if (pnn == 0) {
 260                 if (success != true) {
 261                         printf("The test FAILED\n");
 262                         return 1;
 263                 } else {
 264                         printf("SUCCESS!\n");
 265                 }
 266         }
 267         return 0;
 268 }