r22114: merge from bzr tree

(This used to be commit e60a485ff5c5d8deb7c0aea5e49d0c1d0ea4fa37)

1 files changed, 286 insertions, 0 deletions

diff --git a/source4/cluster/ctdb/tests/ctdb_fetch.c b/source4/cluster/ctdb/tests/ctdb_fetch.c
new file mode 100644
index 0000000000..c0491e9bb5
--- /dev/null
+++ b/source4/cluster/ctdb/tests/ctdb_fetch.c
@@ -0,0 +1,286 @@
+/* 
+   simple ctdb benchmark
+
+   Copyright (C) Andrew Tridgell  2006
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "system/filesys.h"
+#include "popt.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_msgs = 1;
+
+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_record_handle *rec;
+	struct ctdb_db_context *ctdb_db;
+	TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
+	int dest, ret;
+
+	key.dptr = discard_const("testkey");
+	key.dsize = strlen((const char *)key.dptr);
+
+	ctdb_db = ctdb_db_handle(ctdb, "test.tdb");
+
+	rec = ctdb_fetch_lock(ctdb_db, tmp_ctx, key, &data);
+	if (rec == NULL) {
+		printf("Failed to fetch record '%s' on node %d\n", 
+		       (const char *)key.dptr, ctdb_get_vnn(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_vnn(ctdb));
+	data.dsize = strlen((const char *)data.dptr)+1;
+
+	ret = ctdb_record_store(rec, data);
+	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_vnn(ctdb) + 1) % ctdb_get_num_nodes(ctdb);
+	ctdb_send_message(ctdb, dest, 0, nulldata);
+}
+
+/*
+  handler for messages in bench_ring()
+*/
+static void message_handler(struct ctdb_context *ctdb, uint32_t srvid, 
+			    TDB_DATA data, void *private)
+{
+	msg_count++;
+	bench_fetch_1node(ctdb);
+}
+
+
+/*
+  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 vnn=ctdb_get_vnn(ctdb);
+
+	if (vnn == ctdb_get_num_nodes(ctdb)-1) {
+		bench_fetch_1node(ctdb);
+	}
+	
+	start_timer();
+
+	while (end_timer() < timelimit) {
+		if (vnn == 0 && msg_count % 100 == 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());
+}
+
+enum my_functions {FUNC_FETCH=1};
+
+/*
+  ctdb call function to fetch a record
+*/
+static int fetch_func(struct ctdb_call_info *call)
+{
+	call->reply_data = &call->record_data;
+	return 0;
+}
+
+/*
+  main program
+*/
+int main(int argc, const char *argv[])
+{
+	struct ctdb_context *ctdb;
+	struct ctdb_db_context *ctdb_db;
+	const char *nlist = NULL;
+	const char *transport = "tcp";
+	const char *myaddress = NULL;
+	int self_connect=0;
+
+	struct poptOption popt_options[] = {
+		POPT_AUTOHELP
+		{ "nlist", 0, POPT_ARG_STRING, &nlist, 0, "node list file", "filename" },
+		{ "listen", 0, POPT_ARG_STRING, &myaddress, 0, "address to listen on", "address" },
+		{ "transport", 0, POPT_ARG_STRING, &transport, 0, "protocol transport", NULL },
+		{ "self-connect", 0, POPT_ARG_NONE, &self_connect, 0, "enable self connect", "boolean" },
+		{ "timelimit", 't', POPT_ARG_INT, &timelimit, 0, "timelimit", "integer" },
+		{ "num-records", 'r', POPT_ARG_INT, &num_records, 0, "num_records", "integer" },
+		{ "num-msgs", 'n', POPT_ARG_INT, &num_msgs, 0, "num_msgs", "integer" },
+		POPT_TABLEEND
+	};
+	int opt;
+	const char **extra_argv;
+	int extra_argc = 0;
+	int ret;
+	poptContext pc;
+	struct event_context *ev;
+	struct ctdb_call call;
+
+	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);
+		}
+	}
+
+	/* 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 (nlist == NULL || myaddress == NULL) {
+		printf("You must provide a node list with --nlist and an address with --listen\n");
+		exit(1);
+	}
+
+	ev = event_context_init(NULL);
+
+	/* initialise ctdb */
+	ctdb = ctdb_init(ev);
+	if (ctdb == NULL) {
+		printf("Failed to init ctdb\n");
+		exit(1);
+	}
+
+	if (self_connect) {
+		ctdb_set_flags(ctdb, CTDB_FLAG_SELF_CONNECT);
+	}
+
+	ret = ctdb_set_transport(ctdb, transport);
+	if (ret == -1) {
+		printf("ctdb_set_transport failed - %s\n", ctdb_errstr(ctdb));
+		exit(1);
+	}
+
+	/* tell ctdb what address to listen on */
+	ret = ctdb_set_address(ctdb, myaddress);
+	if (ret == -1) {
+		printf("ctdb_set_address failed - %s\n", ctdb_errstr(ctdb));
+		exit(1);
+	}
+
+	/* tell ctdb what nodes are available */
+	ret = ctdb_set_nlist(ctdb, nlist);
+	if (ret == -1) {
+		printf("ctdb_set_nlist failed - %s\n", ctdb_errstr(ctdb));
+		exit(1);
+	}
+
+	/* attach to a specific database */
+	ctdb_db = ctdb_attach(ctdb, "test.tdb", TDB_DEFAULT, O_RDWR|O_CREAT|O_TRUNC, 0666);
+	if (!ctdb_db) {
+		printf("ctdb_attach failed - %s\n", ctdb_errstr(ctdb));
+		exit(1);
+	}
+
+	ret = ctdb_set_call(ctdb_db, fetch_func, FUNC_FETCH);
+
+	ctdb_set_message_handler(ctdb, message_handler, &msg_count);
+
+	/* start the protocol running */
+	ret = ctdb_start(ctdb);
+
+	/* wait until all nodes are connected (should not be needed
+	   outside of test code) */
+	ctdb_connect_wait(ctdb);
+
+	bench_fetch(ctdb, ev);
+
+	ZERO_STRUCT(call);
+	call.key.dptr = discard_const(TESTKEY);
+	call.key.dsize = strlen(TESTKEY);
+
+	/* fetch the record */
+	call.call_id = FUNC_FETCH;
+	call.call_data.dptr = NULL;
+	call.call_data.dsize = 0;
+
+	ret = ctdb_call(ctdb_db, &call);
+	if (ret == -1) {
+		printf("ctdb_call FUNC_FETCH failed - %s\n", ctdb_errstr(ctdb));
+		exit(1);
+	}
+
+	printf("DATA:\n%s\n", (char *)call.reply_data.dptr);
+
+	/* shut it down */
+	talloc_free(ctdb);
+	return 0;
+}