source/cluster/ctdb/tests/ctdb_test.c

   1 /*
   2    ctdb test harness
   3
   4    Copyright (C) Andrew Tridgell  2006
   5
   6    This library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2 of the License, or (at your option) any later version.
  10
  11    This library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with this library; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21 #include "includes.h"
  22 #include "lib/events/events.h"
  23 #include "system/filesys.h"
  24 #include "popt.h"
  25
  26 enum my_functions {FUNC_SORT=1, FUNC_FETCH=2};
  27
  28 static int int_compare(int *i1, int *i2)
  29 {
  30         return *i1 - *i2;
  31 }
  32
  33 /*
  34   add an integer into a record in sorted order
  35 */
  36 static int sort_func(struct ctdb_call_info *call)
  37 {
  38         if (call->call_data == NULL ||
  39             call->call_data->dsize != sizeof(int)) {
  40                 return CTDB_ERR_INVALID;
  41         }
  42         call->new_data = talloc(call, TDB_DATA);
  43         if (call->new_data == NULL) {
  44                 return CTDB_ERR_NOMEM;
  45         }
  46         call->new_data->dptr = talloc_size(call,
  47                                            call->record_data.dsize +
  48                                            call->call_data->dsize);
  49         if (call->new_data->dptr == NULL) {
  50                 return CTDB_ERR_NOMEM;
  51         }
  52         call->new_data->dsize = call->record_data.dsize + call->call_data->dsize;
  53         memcpy(call->new_data->dptr,
  54                call->record_data.dptr, call->record_data.dsize);
  55         memcpy(call->new_data->dptr+call->record_data.dsize,
  56                call->call_data->dptr, call->call_data->dsize);
  57
  58         qsort(call->new_data->dptr, call->new_data->dsize / sizeof(int),
  59               sizeof(int), (comparison_fn_t)int_compare);
  60
  61         return 0;
  62 }
  63
  64 /*
  65   ctdb call function to fetch a record
  66 */
  67 static int fetch_func(struct ctdb_call_info *call)
  68 {
  69         call->reply_data = &call->record_data;
  70         return 0;
  71 }
  72
  73 /*
  74   main program
  75 */
  76 int main(int argc, const char *argv[])
  77 {
  78         struct ctdb_context *ctdb;
  79         struct ctdb_db_context *ctdb_db;
  80         const char *nlist = NULL;
  81         const char *transport = "tcp";
  82         const char *myaddress = NULL;
  83         int self_connect=0;
  84
  85         struct poptOption popt_options[] = {
  86                 POPT_AUTOHELP
  87                 { "nlist", 0, POPT_ARG_STRING, &nlist, 0, "node list file", "filename" },
  88                 { "listen", 0, POPT_ARG_STRING, &myaddress, 0, "address to listen on", "address" },
  89                 { "transport", 0, POPT_ARG_STRING, &transport, 0, "protocol transport", NULL },
  90                 { "self-connect", 0, POPT_ARG_NONE, &self_connect, 0, "enable self connect", "boolean" },
  91                 POPT_TABLEEND
  92         };
  93         int opt;
  94         const char **extra_argv;
  95         int extra_argc = 0;
  96         int i, ret;
  97         poptContext pc;
  98         struct event_context *ev;
  99         struct ctdb_call call;
 100
 101         pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
 102
 103         while ((opt = poptGetNextOpt(pc)) != -1) {
 104                 switch (opt) {
 105                 default:
 106                         fprintf(stderr, "Invalid option %s: %s\n",
 107                                 poptBadOption(pc, 0), poptStrerror(opt));
 108                         exit(1);
 109                 }
 110         }
 111
 112         /* setup the remaining options for the main program to use */
 113         extra_argv = poptGetArgs(pc);
 114         if (extra_argv) {
 115                 extra_argv++;
 116                 while (extra_argv[extra_argc]) extra_argc++;
 117         }
 118
 119         if (nlist == NULL || myaddress == NULL) {
 120                 printf("You must provide a node list with --nlist and an address with --listen\n");
 121                 exit(1);
 122         }
 123
 124         ev = event_context_init(NULL);
 125
 126         /* initialise ctdb */
 127         ctdb = ctdb_init(ev);
 128         if (ctdb == NULL) {
 129                 printf("Failed to init ctdb\n");
 130                 exit(1);
 131         }
 132
 133         if (self_connect) {
 134                 ctdb_set_flags(ctdb, CTDB_FLAG_SELF_CONNECT);
 135         }
 136
 137         ret = ctdb_set_transport(ctdb, transport);
 138         if (ret == -1) {
 139                 printf("ctdb_set_transport failed - %s\n", ctdb_errstr(ctdb));
 140                 exit(1);
 141         }
 142
 143         /* tell ctdb what address to listen on */
 144         ret = ctdb_set_address(ctdb, myaddress);
 145         if (ret == -1) {
 146                 printf("ctdb_set_address failed - %s\n", ctdb_errstr(ctdb));
 147                 exit(1);
 148         }
 149
 150         /* tell ctdb what nodes are available */
 151         ret = ctdb_set_nlist(ctdb, nlist);
 152         if (ret == -1) {
 153                 printf("ctdb_set_nlist failed - %s\n", ctdb_errstr(ctdb));
 154                 exit(1);
 155         }
 156
 157         /* attach to a specific database */
 158         ctdb_db = ctdb_attach(ctdb, "test.tdb", TDB_DEFAULT, O_RDWR|O_CREAT|O_TRUNC, 0666);
 159         if (!ctdb_db) {
 160                 printf("ctdb_attach failed - %s\n", ctdb_errstr(ctdb));
 161                 exit(1);
 162         }
 163
 164         /* setup a ctdb call function */
 165         ret = ctdb_set_call(ctdb_db, sort_func,  FUNC_SORT);
 166         ret = ctdb_set_call(ctdb_db, fetch_func, FUNC_FETCH);
 167
 168         /* start the protocol running */
 169         ret = ctdb_start(ctdb);
 170
 171         /* wait until all nodes are connected (should not be needed
 172            outide of test code) */
 173         ctdb_connect_wait(ctdb);
 174
 175         ZERO_STRUCT(call);
 176         call.key.dptr = discard_const("test");
 177         call.key.dsize = strlen("test")+1;
 178
 179         /* add some random data */
 180         for (i=0;i<10;i++) {
 181                 int v = random() % 1000;
 182
 183                 call.call_id = FUNC_SORT;
 184                 call.call_data.dptr = (uint8_t *)&v;
 185                 call.call_data.dsize = sizeof(v);
 186
 187                 ret = ctdb_call(ctdb_db, &call);
 188                 if (ret == -1) {
 189                         printf("ctdb_call FUNC_SORT failed - %s\n", ctdb_errstr(ctdb));
 190                         exit(1);
 191                 }
 192         }
 193
 194         /* fetch the record */
 195         call.call_id = FUNC_FETCH;
 196         call.call_data.dptr = NULL;
 197         call.call_data.dsize = 0;
 198
 199         ret = ctdb_call(ctdb_db, &call);
 200         if (ret == -1) {
 201                 printf("ctdb_call FUNC_FETCH failed - %s\n", ctdb_errstr(ctdb));
 202                 exit(1);
 203         }
 204
 205         for (i=0;i<call.reply_data.dsize/sizeof(int);i++) {
 206                 printf("%3d\n", ((int *)call.reply_data.dptr)[i]);
 207         }
 208         talloc_free(call.reply_data.dptr);
 209
 210         /* go into a wait loop to allow other nodes to complete */
 211         ctdb_wait_loop(ctdb);
 212
 213         /* shut it down */
 214         talloc_free(ctdb);
 215         return 0;
 216 }