1 files changed, 278 insertions, 0 deletions
diff --git a/ctdb/tests/src/ctdb_fetch.c b/ctdb/tests/src/ctdb_fetch.c
new file mode 100644
index 0000000000..b900efa7c3
--- /dev/null
+++ b/ctdb/tests/src/ctdb_fetch.c
@@ -0,0 +1,278 @@
+/* 
+   simple ctdb benchmark
+
+   Copyright (C) Andrew Tridgell  2006
+
+   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 "includes.h"
+#include "system/filesys.h"
+#include "popt.h"
+#include "cmdline.h"
+
+#include <sys/time.h>
+#include <time.h>
+
+static struct timeval tp1,tp2;
+
+static void start_timer(void)
+{
+	gettimeofday(&tp1,NULL);
+}
+
+static double end_timer(void)
+{
+	gettimeofday(&tp2,NULL);
+	return (tp2.tv_sec + (tp2.tv_usec*1.0e-6)) - 
+		(tp1.tv_sec + (tp1.tv_usec*1.0e-6));
+}
+
+
+static int timelimit = 10;
+static int num_records = 10;
+static int num_nodes;
+static int msg_count;
+
+#define TESTKEY "testkey"
+
+/*
+  fetch a record
+  store a expanded record
+  send a message to next node to tell it to do the same
+*/
+static void bench_fetch_1node(struct ctdb_context *ctdb)
+{
+	TDB_DATA key, data, nulldata;
+	struct ctdb_db_context *ctdb_db;
+	TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
+	int dest, ret;
+	struct ctdb_record_handle *h;
+
+	key.dptr = discard_const(TESTKEY);
+	key.dsize = strlen(TESTKEY);
+
+	ctdb_db = ctdb_db_handle(ctdb, "test.tdb");
+
+	h = ctdb_fetch_lock(ctdb_db, tmp_ctx, key, &data);
+	if (h == NULL) {
+		printf("Failed to fetch record '%s' on node %d\n", 
+		       (const char *)key.dptr, ctdb_get_pnn(ctdb));
+		talloc_free(tmp_ctx);
+		return;
+	}
+
+	if (data.dsize > 1000) {
+		data.dsize = 0;
+	}
+
+	if (data.dsize == 0) {
+		data.dptr = (uint8_t *)talloc_asprintf(tmp_ctx, "Test data\n");
+	}
+	data.dptr = (uint8_t *)talloc_asprintf_append((char *)data.dptr, 
+						      "msg_count=%d on node %d\n",
+						      msg_count, ctdb_get_pnn(ctdb));
+	if (data.dptr == NULL) {
+		printf("Failed to create record\n");
+		talloc_free(tmp_ctx);
+		return;
+	}
+	data.dsize = strlen((const char *)data.dptr)+1;
+
+	ret = ctdb_record_store(h, data);
+	talloc_free(h);
+	if (ret != 0) {
+		printf("Failed to store record\n");
+	}
+
+	talloc_free(tmp_ctx);
+
+	/* tell the next node to do the same */
+	nulldata.dptr = NULL;
+	nulldata.dsize = 0;
+
+	dest = (ctdb_get_pnn(ctdb) + 1) % num_nodes;
+	ctdb_client_send_message(ctdb, dest, 0, nulldata);
+}
+
+/*
+  handler for messages in bench_ring()
+*/
+static void message_handler(struct ctdb_context *ctdb, uint64_t srvid, 
+			    TDB_DATA data, void *private_data)
+{
+	msg_count++;
+	bench_fetch_1node(ctdb);
+}
+
+
+/*
+ * timeout handler - noop
+ */
+static void timeout_handler(struct event_context *ev, struct timed_event *timer,
+			    struct timeval curtime, void *private_data)
+{
+	return;
+}
+
+/*
+  benchmark the following:
+
+  fetch a record
+  store a expanded record
+  send a message to next node to tell it to do the same
+
+*/
+static void bench_fetch(struct ctdb_context *ctdb, struct event_context *ev)
+{
+	int pnn=ctdb_get_pnn(ctdb);
+
+	if (pnn == num_nodes - 1) {
+		bench_fetch_1node(ctdb);
+	}
+	
+	start_timer();
+	event_add_timed(ev, ctdb, timeval_current_ofs(timelimit,0), timeout_handler, NULL);
+
+	while (end_timer() < timelimit) {
+		if (pnn == 0 && msg_count % 100 == 0 && end_timer() > 0) {
+			printf("Fetch: %.2f msgs/sec\r", msg_count/end_timer());
+			fflush(stdout);
+		}
+		if (event_loop_once(ev) != 0) {
+			printf("Event loop failed!\n");
+			break;
+		}
+	}
+
+	printf("Fetch: %.2f msgs/sec\n", msg_count/end_timer());
+}
+
+/*
+  handler for reconfigure message
+*/
+static void reconfigure_handler(struct ctdb_context *ctdb, uint64_t srvid, 
+				TDB_DATA data, void *private_data)
+{
+	int *ready = (int *)private_data;
+	*ready = 1;
+}
+
+/*
+  main program
+*/
+int main(int argc, const char *argv[])
+{
+	struct ctdb_context *ctdb;
+	struct ctdb_db_context *ctdb_db;
+
+	struct poptOption popt_options[] = {
+		POPT_AUTOHELP
+		POPT_CTDB_CMDLINE
+		{ "timelimit", 't', POPT_ARG_INT, &timelimit, 0, "timelimit", "integer" },
+		{ "num-records", 'r', POPT_ARG_INT, &num_records, 0, "num_records", "integer" },
+		{ NULL, 'n', POPT_ARG_INT, &num_nodes, 0, "num_nodes", "integer" },
+		POPT_TABLEEND
+	};
+	int opt;
+	const char **extra_argv;
+	int extra_argc = 0;
+	poptContext pc;
+	struct event_context *ev;
+	TDB_DATA key, data;
+	struct ctdb_record_handle *h;
+	int cluster_ready=0;
+
+	pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
+
+	while ((opt = poptGetNextOpt(pc)) != -1) {
+		switch (opt) {
+		default:
+			fprintf(stderr, "Invalid option %s: %s\n", 
+				poptBadOption(pc, 0), poptStrerror(opt));
+			exit(1);
+		}
+	}
+
+	/* talloc_enable_leak_report_full(); */
+
+	/* setup the remaining options for the main program to use */
+	extra_argv = poptGetArgs(pc);
+	if (extra_argv) {
+		extra_argv++;
+		while (extra_argv[extra_argc]) extra_argc++;
+	}
+
+	if (num_nodes == 0) {
+		printf("You must specify the number of nodes\n");
+		exit(1);
+	}
+
+	ev = event_context_init(NULL);
+	tevent_loop_allow_nesting(ev);
+
+	ctdb = ctdb_cmdline_client(ev, timeval_current_ofs(3, 0));
+
+	if (ctdb == NULL) {
+		printf("failed to connect to ctdb daemon.\n");
+		exit(1);
+	}
+
+	ctdb_client_set_message_handler(ctdb, CTDB_SRVID_RECONFIGURE, reconfigure_handler, 
+				 &cluster_ready);
+
+	/* attach to a specific database */
+	ctdb_db = ctdb_attach(ctdb, timeval_current_ofs(2, 0), "test.tdb",
+			      false, 0);
+	if (!ctdb_db) {
+		printf("ctdb_attach failed - %s\n", ctdb_errstr(ctdb));
+		exit(1);
+	}
+
+	ctdb_client_set_message_handler(ctdb, 0, message_handler, &msg_count);
+
+	printf("Waiting for cluster\n");
+	while (1) {
+		uint32_t recmode=1;
+		ctdb_ctrl_getrecmode(ctdb, ctdb, timeval_zero(), CTDB_CURRENT_NODE, &recmode);
+		if (recmode == 0) break;
+		event_loop_once(ev);
+	}
+
+	/* This test has a race condition. If CTDB receives the message from previous
+	 * node, before this node has registered for that message, this node will never
+	 * receive that message and will block on receive. Sleeping for some time will
+	 * hopefully ensure that the test program on all the nodes register for messages.
+	 */
+	printf("Sleeping for %d seconds\n", num_nodes);
+	sleep(num_nodes);
+	bench_fetch(ctdb, ev);
+
+	key.dptr = discard_const(TESTKEY);
+	key.dsize = strlen(TESTKEY);
+
+	printf("Fetching final record\n");
+
+	h = ctdb_fetch_lock(ctdb_db, ctdb, key, &data);
+
+	if (h == NULL) {
+		printf("Failed to fetch record '%s' on node %d\n", 
+		       (const char *)key.dptr, ctdb_get_pnn(ctdb));
+		exit(1);
+	}
+
+	printf("DATA:\n%s\n", (char *)data.dptr);
+
+	return 0;
+}