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/*
Fetch a single record using readonly
Copyright (C) Amitay Isaacs 2016
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "replace.h"
#include "system/network.h"
#include "lib/util/debug.h"
#include "lib/util/tevent_unix.h"
#include "client/client.h"
#include "tests/src/test_options.h"
#include "tests/src/cluster_wait.h"
struct fetch_readonly_state {
struct tevent_context *ev;
};
static void fetch_readonly_done(struct tevent_req *subreq);
static struct tevent_req *fetch_readonly_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct ctdb_client_context *client,
struct ctdb_db_context *db,
const char *keystr,
int timelimit)
{
struct tevent_req *req, *subreq;
struct fetch_readonly_state *state;
TDB_DATA key;
req = tevent_req_create(mem_ctx, &state, struct fetch_readonly_state);
if (req == NULL) {
return NULL;
}
state->ev = ev;
key.dptr = (uint8_t *)discard_const(keystr);
key.dsize = strlen(keystr);
subreq = ctdb_fetch_lock_send(state, ev, client, db, key, true);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, fetch_readonly_done, req);
return req;
}
static void fetch_readonly_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct fetch_readonly_state *state = tevent_req_data(
req, struct fetch_readonly_state);
struct ctdb_record_handle *h;
int ret;
h = ctdb_fetch_lock_recv(subreq, NULL, state, NULL, &ret);
TALLOC_FREE(subreq);
if (h == NULL) {
tevent_req_error(req, ret);
return;
}
talloc_free(h);
tevent_req_done(req);
}
static bool fetch_readonly_recv(struct tevent_req *req, int *perr)
{
int err;
if (tevent_req_is_unix_error(req, &err)) {
if (perr != NULL) {
*perr = err;
}
return false;
}
return true;
}
int main(int argc, const char *argv[])
{
const struct test_options *opts;
TALLOC_CTX *mem_ctx;
struct tevent_context *ev;
struct ctdb_client_context *client;
struct ctdb_db_context *ctdb_db;
struct tevent_req *req;
int ret;
bool status;
setup_logging("fetch_readonly", DEBUG_STDERR);
status = process_options_database(argc, argv, &opts);
if (! status) {
exit(1);
}
mem_ctx = talloc_new(NULL);
if (mem_ctx == NULL) {
fprintf(stderr, "Memory allocation error\n");
exit(1);
}
ev = tevent_context_init(mem_ctx);
if (ev == NULL) {
fprintf(stderr, "Memory allocation error\n");
exit(1);
}
ret = ctdb_client_init(mem_ctx, ev, opts->socket, &client);
if (ret != 0) {
fprintf(stderr, "Failed to initialize client, %s\n",
strerror(ret));
exit(1);
}
if (! ctdb_recovery_wait(ev, client)) {
fprintf(stderr, "Memory allocation error\n");
exit(1);
}
ret = ctdb_attach(ev, client, tevent_timeval_zero(), opts->dbname, 0,
&ctdb_db);
if (ret != 0) {
fprintf(stderr, "Failed to attach to DB %s\n", opts->dbname);
exit(1);
}
req = fetch_readonly_send(mem_ctx, ev, client, ctdb_db,
opts->keystr, opts->timelimit);
if (req == NULL) {
fprintf(stderr, "Memory allocation error\n");
exit(1);
}
tevent_req_poll(req, ev);
status = fetch_readonly_recv(req, &ret);
if (! status) {
fprintf(stderr, "fetch readonly loop test failed\n");
exit(1);
}
talloc_free(mem_ctx);
return 0;
}
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