ctdb-tests: Add torture test for fetch functions

Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>

ctdb/tests/src/fetch_loop_key.c

@@ -0,0 +1,214 @@
+/*
+   simple ctdb benchmark
+
+   Copyright (C) Amitay Isaacs  2015
+
+   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/tevent_unix.h"
+
+#include "client/client.h"
+#include "tests/src/test_options.h"
+#include "tests/src/cluster_wait.h"
+
+struct fetch_loop_state {
+	struct tevent_context *ev;
+	struct ctdb_client_context *client;
+	struct ctdb_db_context *ctdb_db;
+	int timelimit;
+	TDB_DATA key;
+	int locks_count;
+};
+
+static void fetch_loop_next(struct tevent_req *subreq);
+
+static struct tevent_req *fetch_loop_send(TALLOC_CTX *mem_ctx,
+					  struct tevent_context *ev,
+					  struct ctdb_client_context *client,
+					  struct ctdb_db_context *ctdb_db,
+					  const char *keystr,
+					  int timelimit)
+{
+	struct tevent_req *req, *subreq;
+	struct fetch_loop_state *state;
+
+	req = tevent_req_create(mem_ctx, &state, struct fetch_loop_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	state->ev = ev;
+	state->client = client;
+	state->ctdb_db = ctdb_db;
+	state->timelimit = timelimit;
+	state->key.dptr = discard_const(keystr);
+	state->key.dsize = strlen(keystr);
+
+	subreq = ctdb_fetch_lock_send(state, ev, client, ctdb_db,
+				      state->key, false);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, fetch_loop_next, req);
+
+	return req;
+}
+
+static void fetch_loop_next(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct fetch_loop_state *state = tevent_req_data(
+		req, struct fetch_loop_state);
+	struct ctdb_record_handle *h;
+	TDB_DATA data;
+	int ret;
+
+	h = ctdb_fetch_lock_recv(subreq, NULL, state, &data, &ret);
+	TALLOC_FREE(subreq);
+	if (h == NULL) {
+		tevent_req_error(req, ret);
+		return;
+	}
+
+	if (data.dsize == sizeof(uint32_t)) {
+		state->locks_count = *(uint32_t *)data.dptr;
+	}
+	TALLOC_FREE(data.dptr);
+
+	state->locks_count += 1;
+	data.dsize = sizeof(uint32_t);
+	data.dptr = (uint8_t *)&state->locks_count;
+
+	ret = ctdb_store_record(h, data);
+	if (ret != 0) {
+		talloc_free(h);
+		tevent_req_error(req, ret);
+		return;
+	}
+
+	talloc_free(h);
+
+	subreq = ctdb_fetch_lock_send(state, state->ev, state->client,
+				      state->ctdb_db, state->key, false);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, fetch_loop_next, req);
+}
+
+static bool fetch_loop_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;
+}
+
+static struct tevent_req *global_req;
+
+static void alarm_handler(int sig)
+{
+	struct fetch_loop_state *state = tevent_req_data(
+		global_req, struct fetch_loop_state);
+	static int time_passed = 0;
+
+	time_passed += 1;
+
+	printf("Locks:%d\n", state->locks_count);
+	fflush(stdout);
+
+	if (time_passed >= state->timelimit) {
+		tevent_req_done(global_req);
+	}
+
+	alarm(1);
+}
+
+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;
+	int ret;
+	bool status;
+
+	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);
+	}
+
+	global_req = fetch_loop_send(mem_ctx, ev, client, ctdb_db,
+				     opts->keystr, opts->timelimit);
+	if (global_req == NULL) {
+		fprintf(stderr, "Memory allocation error\n");
+		exit(1);
+	}
+
+	signal(SIGALRM, alarm_handler);
+	alarm(1);
+
+	tevent_req_poll(global_req, ev);
+
+	status = fetch_loop_recv(global_req, &ret);
+	if (! status) {
+		fprintf(stderr, "fetch loop test failed\n");
+		exit(1);
+	}
+
+	talloc_free(mem_ctx);
+	return 0;
+}

ctdb/wscript

@@ -696,6 +696,7 @@ def build(bld):
         'message_ring',
         'fetch_ring',
         'fetch_loop',
+        'fetch_loop_key',
         'fetch_readonly',
         'fetch_readonly_loop',
         'transaction_loop',