ctdb/tests/src/fetch_readonly.c

   1 /*
   2    Fetch a single record using readonly
   3
   4    Copyright (C) Amitay Isaacs  2016
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program 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
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "replace.h"
  21 #include "system/network.h"
  22
  23 #include "lib/util/debug.h"
  24 #include "lib/util/tevent_unix.h"
  25
  26 #include "client/client.h"
  27 #include "tests/src/test_options.h"
  28 #include "tests/src/cluster_wait.h"
  29
  30
  31 struct fetch_readonly_state {
  32         struct tevent_context *ev;
  33 };
  34
  35 static void fetch_readonly_done(struct tevent_req *subreq);
  36
  37 static struct tevent_req *fetch_readonly_send(TALLOC_CTX *mem_ctx,
  38                                           struct tevent_context *ev,
  39                                           struct ctdb_client_context *client,
  40                                           struct ctdb_db_context *db,
  41                                           const char *keystr,
  42                                           int timelimit)
  43 {
  44         struct tevent_req *req, *subreq;
  45         struct fetch_readonly_state *state;
  46         TDB_DATA key;
  47
  48         req = tevent_req_create(mem_ctx, &state, struct fetch_readonly_state);
  49         if (req == NULL) {
  50                 return NULL;
  51         }
  52
  53         state->ev = ev;
  54
  55         key.dptr = (uint8_t *)discard_const(keystr);
  56         key.dsize = strlen(keystr);
  57
  58         subreq = ctdb_fetch_lock_send(state, ev, client, db, key, true);
  59         if (tevent_req_nomem(subreq, req)) {
  60                 return tevent_req_post(req, ev);
  61         }
  62         tevent_req_set_callback(subreq, fetch_readonly_done, req);
  63
  64         return req;
  65 }
  66
  67 static void fetch_readonly_done(struct tevent_req *subreq)
  68 {
  69         struct tevent_req *req = tevent_req_callback_data(
  70                 subreq, struct tevent_req);
  71         struct fetch_readonly_state *state = tevent_req_data(
  72                 req, struct fetch_readonly_state);
  73         struct ctdb_record_handle *h;
  74         int ret;
  75
  76         h = ctdb_fetch_lock_recv(subreq, NULL, state, NULL, &ret);
  77         TALLOC_FREE(subreq);
  78         if (h == NULL) {
  79                 tevent_req_error(req, ret);
  80                 return;
  81         }
  82
  83         talloc_free(h);
  84         tevent_req_done(req);
  85 }
  86
  87 static bool fetch_readonly_recv(struct tevent_req *req, int *perr)
  88 {
  89         int err;
  90
  91         if (tevent_req_is_unix_error(req, &err)) {
  92                 if (perr != NULL) {
  93                         *perr = err;
  94                 }
  95                 return false;
  96         }
  97         return true;
  98 }
  99
 100 int main(int argc, const char *argv[])
 101 {
 102         const struct test_options *opts;
 103         TALLOC_CTX *mem_ctx;
 104         struct tevent_context *ev;
 105         struct ctdb_client_context *client;
 106         struct ctdb_db_context *ctdb_db;
 107         struct tevent_req *req;
 108         int ret;
 109         bool status;
 110
 111         setup_logging("fetch_readonly", DEBUG_STDERR);
 112
 113         status = process_options_database(argc, argv, &opts);
 114         if (! status) {
 115                 exit(1);
 116         }
 117
 118         mem_ctx = talloc_new(NULL);
 119         if (mem_ctx == NULL) {
 120                 fprintf(stderr, "Memory allocation error\n");
 121                 exit(1);
 122         }
 123
 124         ev = tevent_context_init(mem_ctx);
 125         if (ev == NULL) {
 126                 fprintf(stderr, "Memory allocation error\n");
 127                 exit(1);
 128         }
 129
 130         ret = ctdb_client_init(mem_ctx, ev, opts->socket, &client);
 131         if (ret != 0) {
 132                 fprintf(stderr, "Failed to initialize client, %s\n",
 133                         strerror(ret));
 134                 exit(1);
 135         }
 136
 137         if (! ctdb_recovery_wait(ev, client)) {
 138                 fprintf(stderr, "Memory allocation error\n");
 139                 exit(1);
 140         }
 141
 142         ret = ctdb_attach(ev, client, tevent_timeval_zero(), opts->dbname, 0,
 143                           &ctdb_db);
 144         if (ret != 0) {
 145                 fprintf(stderr, "Failed to attach to DB %s\n", opts->dbname);
 146                 exit(1);
 147         }
 148
 149         req = fetch_readonly_send(mem_ctx, ev, client, ctdb_db,
 150                                   opts->keystr, opts->timelimit);
 151         if (req == NULL) {
 152                 fprintf(stderr, "Memory allocation error\n");
 153                 exit(1);
 154         }
 155
 156         tevent_req_poll(req, ev);
 157
 158         status = fetch_readonly_recv(req, &ret);
 159         if (! status) {
 160                 fprintf(stderr, "fetch readonly loop test failed\n");
 161                 exit(1);
 162         }
 163
 164         talloc_free(mem_ctx);
 165         return 0;
 166 }