r22231: merge from bzr ctdb tree

(This used to be commit 807b959082d3b9a929c9f6597714e636638a940e)

1 files changed, 274 insertions, 0 deletions

diff --git a/source4/cluster/ctdb/tests/ctdb_fetch1.c b/source4/cluster/ctdb/tests/ctdb_fetch1.c
new file mode 100644
index 0000000000..8071256a43
--- /dev/null
+++ b/source4/cluster/ctdb/tests/ctdb_fetch1.c
@@ -0,0 +1,274 @@
+/* 
+   simple ctdb fetch test
+
+   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 "ctdb.h"
+#include "ctdb_private.h"
+
+#define PARENT_SRVID	0
+#define CHILD1_SRVID	1
+#define CHILD2_SRVID	2
+
+int num_msg=0;
+
+static void message_handler(struct ctdb_context *ctdb, uint32_t srvid, 
+			    TDB_DATA data, void *private_data)
+{
+	num_msg++;
+}
+static void child_handler(struct ctdb_context *ctdb, uint32_t srvid, 
+			    TDB_DATA data, void *private_data)
+{
+	num_msg++;
+}
+
+void test1(struct ctdb_db_context *ctdb_db)
+{
+	struct ctdb_record_handle *rh;
+	TDB_DATA key, data, data2, store_data;
+	int ret;
+ 
+	/* 
+	   test 1 : write data and read it back.   should all be the same
+	 */
+	printf("Test1: write and verify we can read it back: ");
+	key.dptr  = discard_const("Record");
+	key.dsize = strlen((const char *)key.dptr)+1;
+	rh = ctdb_fetch_lock(ctdb_db, ctdb_db, key, &data);
+
+	store_data.dptr  = discard_const("data to store");
+	store_data.dsize = strlen((const char *)store_data.dptr)+1;
+	ret = ctdb_store_unlock(rh, store_data);
+
+	rh = ctdb_fetch_lock(ctdb_db, ctdb_db, key, &data2);
+	/* hopefully   data2 will now contain the record written above */
+	if (!strcmp("data to store", (const char *)data2.dptr)) {
+		printf("SUCCESS\n");
+	} else {
+		printf("FAILURE\n");
+		exit(10);
+	}
+	
+	/* just write it back to unlock it */
+	ret = ctdb_store_unlock(rh, store_data);
+}
+
+void child(int srvid, struct event_context *ev, struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db)
+{
+	TDB_DATA data;
+	struct ctdb_record_handle *rh;
+	TDB_DATA key, data2;
+
+	data.dptr=discard_const("dummy message");
+	data.dsize=strlen((const char *)data.dptr)+1;
+
+	ctdb_set_message_handler(ctdb, srvid, child_handler, NULL);
+
+	ctdb_send_message(ctdb, ctdb_get_vnn(ctdb), PARENT_SRVID, data);
+	while (num_msg==0) {
+		event_loop_once(ev);
+	}
+
+
+	/* fetch and lock the record */
+	key.dptr  = discard_const("Record");
+	key.dsize = strlen((const char *)key.dptr)+1;
+	rh = ctdb_fetch_lock(ctdb_db, ctdb_db, key, &data2);
+	ctdb_send_message(ctdb, ctdb_get_vnn(ctdb), PARENT_SRVID, data);
+
+
+	while (1) {
+		event_loop_once(ev);
+	}
+}
+
+/*
+  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;
+	int daemon_mode=0;
+	TDB_DATA data;
+
+	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" },
+		{ "daemon", 0, POPT_ARG_NONE, &daemon_mode, 0, "spawn a ctdb daemon", "boolean" },
+		POPT_TABLEEND
+	};
+	int opt;
+	const char **extra_argv;
+	int extra_argc = 0;
+	int ret;
+	poptContext pc;
+	struct event_context *ev;
+
+	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);
+	}
+	if (daemon_mode) {
+		ctdb_set_flags(ctdb, CTDB_FLAG_DAEMON_MODE);
+	}
+
+	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);
+	}
+
+	/* start the protocol running */
+	ret = ctdb_start(ctdb);
+
+#if 0
+	/* wait until all nodes are connected (should not be needed
+	   outside of test code) */
+	ctdb_connect_wait(ctdb);
+#endif
+
+	/*
+	   start two child processes
+	 */
+	if(fork()){
+		/* 
+		   set up a message handler so our child processes can talk to us
+		 */
+		ctdb_set_message_handler(ctdb, PARENT_SRVID, message_handler, NULL);
+	} else {
+		sleep(3);
+		if(!fork()){
+			child(CHILD1_SRVID, ev, ctdb, ctdb_db);
+		} else {
+			child(CHILD2_SRVID, ev, ctdb, ctdb_db);
+		}
+	}
+
+	/* 
+	   test 1 : write data and read it back.
+	 */
+	test1(ctdb_db); 
+
+	/* 
+	   wait until both children have sent us a message they have started
+	 */
+	printf("Wait for both child processes to start: ");
+	while (num_msg!=2) {
+		event_loop_once(ev);
+	}
+	printf("STARTED\n");
+
+
+	/*
+	   send message to child 1 to make it to fetch and lock the record 
+	 */
+	data.dptr=discard_const("dummy message");
+	data.dsize=strlen((const char *)data.dptr)+1;
+	printf("Send message to child 1 to fetch_lock the record\n");
+	ctdb_send_message(ctdb, ctdb_get_vnn(ctdb), CHILD1_SRVID, data);
+
+	/* wait for child 1 to complete fetching and locking the record */
+	while (num_msg!=3) {
+		event_loop_once(ev);
+	}
+	printf("Child 1 has fetched and locked the record\n");
+
+	/* now tell child 2 to fetch and lock the same record */
+	printf("Send message to child 2 to fetch_lock the record\n");
+	ctdb_send_message(ctdb, ctdb_get_vnn(ctdb), CHILD2_SRVID, data);
+
+	/* wait for child 2 to complete fetching and locking the record */
+	while (num_msg!=4) {
+		event_loop_once(ev);
+	}
+	printf("Child 2 has fetched and locked the record\n");
+
+
+	while (1) {
+		event_loop_once(ev);
+	}
+
+	/* shut it down */
+	talloc_free(ctdb);
+	return 0;
+}