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Code

control to delete all records in a database

Browse Source 
(This used to be ctdb commit 6664e00fc02e1c60cc1a35ecd15f4893a34f23d1)
This commit is contained in:
Ronnie Sahlberg 2007-04-29 18:48:46 +10:00
parent c0b0b4a0f5
commit 376a3ea852
5 changed files with 89 additions and 17 deletions
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25
ctdb/common/ctdb_client.c
View File

@ -984,6 +984,31 @@ int ctdb_setdmaster(struct ctdb_context *ctdb, uint32_t destnode, TALLOC_CTX *me
return 0;
}
/*
delete all records from a tdb
*/
int ctdb_cleardb(struct ctdb_context *ctdb, uint32_t destnode, TALLOC_CTX *mem_ctx, uint32_t dbid)
{
int ret;
TDB_DATA indata, outdata;
int32_t res;
indata.dsize = sizeof(uint32_t);
indata.dptr = (unsigned char *)talloc_array(mem_ctx, uint32_t, 1);
((uint32_t *)(&indata.dptr[0]))[0] = dbid;
ret = ctdb_control(ctdb, destnode, 0,
CTDB_CONTROL_CLEAR_DB, indata,
mem_ctx, &outdata, &res);
if (ret != 0 || res != 0) {
DEBUG(0,(__location__ " ctdb_control for cleardb failed\n"));
return -1;
}
return 0;
}
/*
ping a node
*/

45
ctdb/common/ctdb_control.c
View File

@ -43,6 +43,19 @@ struct ctdb_control_state {
} while (0)
static int traverse_cleardb(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *p)
{
int ret;
ret = tdb_delete(tdb, key);
if (ret) {
DEBUG(0,(__location__ "failed to delete tdb record\n"));
return ret;
}
return 0;
}
static int traverse_setdmaster(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *p)
{
uint32_t *dmaster = (uint32_t *)p;
@ -237,7 +250,6 @@ static int32_t ctdb_control_dispatch(struct ctdb_context *ctdb,
case CTDB_CONTROL_GET_KEYS: {
uint32_t dbid;
struct ctdb_db_context *ctdb_db;
struct tdb_wrap *db;
struct getkeys_params params;
dbid = *((uint32_t *)(&indata.dptr[0]));
@ -251,17 +263,10 @@ static int32_t ctdb_control_dispatch(struct ctdb_context *ctdb,
outdata->dptr = (unsigned char *)talloc_array(outdata, uint32_t, 1);
*((uint32_t *)(&outdata->dptr[0]))=0;
db = tdb_wrap_open(NULL, ctdb_db->db_path, 0, TDB_DEFAULT, O_RDONLY, 0);
if (db == NULL) {
DEBUG(0,(__location__ " failed to open db\n"));
return -1;
}
params.ctdb_db = ctdb_db;
params.outdata = outdata;
tdb_traverse(db->tdb, traverse_getkeys, &params);
tdb_traverse_read(ctdb_db->ltdb->tdb, traverse_getkeys, &params);
talloc_free(db);
return 0;
}
@ -269,7 +274,6 @@ static int32_t ctdb_control_dispatch(struct ctdb_context *ctdb,
case CTDB_CONTROL_SET_DMASTER: {
uint32_t dbid, dmaster;
struct ctdb_db_context *ctdb_db;
struct tdb_wrap *db;
dbid = ((uint32_t *)(&indata.dptr[0]))[0];
ctdb_db = find_ctdb_db(ctdb, dbid);
@ -283,15 +287,26 @@ static int32_t ctdb_control_dispatch(struct ctdb_context *ctdb,
outdata->dsize = 0;
outdata->dptr = NULL;
db = tdb_wrap_open(NULL, ctdb_db->db_path, 0, TDB_DEFAULT, O_RDONLY, 0);
if (db == NULL) {
DEBUG(0,(__location__ " failed to open db\n"));
tdb_traverse(ctdb_db->ltdb->tdb, traverse_setdmaster, &dmaster);
return 0;
}
case CTDB_CONTROL_CLEAR_DB: {
uint32_t dbid;
struct ctdb_db_context *ctdb_db;
dbid = ((uint32_t *)(&indata.dptr[0]))[0];
ctdb_db = find_ctdb_db(ctdb, dbid);
if (!ctdb_db) {
DEBUG(0,(__location__ " Unknown db 0x%08x\n",dbid));
return -1;
}
tdb_traverse(db->tdb, traverse_setdmaster, &dmaster);
outdata->dsize = 0;
outdata->dptr = NULL;
talloc_free(db);
tdb_traverse(ctdb_db->ltdb->tdb, traverse_cleardb, NULL);
return 0;
}

5
ctdb/include/ctdb.h
View File

@ -266,4 +266,9 @@ int ctdb_set_debuglevel(struct ctdb_context *ctdb, uint32_t destnode, uint32_t l
*/
int ctdb_setdmaster(struct ctdb_context *ctdb, uint32_t destnode, TALLOC_CTX *mem_ctx, uint32_t dbid, uint32_t dmaster);
/*
delete all records from a tdb
*/
int ctdb_cleardb(struct ctdb_context *ctdb, uint32_t destnode, TALLOC_CTX *mem_ctx, uint32_t dbid);
#endif

3
ctdb/include/ctdb_private.h
View File

@ -256,7 +256,8 @@ enum ctdb_controls {CTDB_CONTROL_PROCESS_EXISTS,
CTDB_CONTROL_GET_DBMAP,
CTDB_CONTROL_GET_NODEMAP,
CTDB_CONTROL_GET_KEYS,
CTDB_CONTROL_SET_DMASTER};
CTDB_CONTROL_SET_DMASTER,
CTDB_CONTROL_CLEAR_DB};
enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};

28
ctdb/tools/ctdb_control.c
View File

@ -44,6 +44,7 @@ static void usage(void)
printf(" getnodemap <vnn> lists nodes known to a ctdb daemon\n");
printf(" getkeys <vnn> <dbid> lists all keys in a remote tdb\n");
printf(" setdmaster <vnn> <dbid> <dmaster> sets new dmaster for all records in the database\n");
printf(" cleardb <vnn> <dbid> deletes all records in a db\n");
exit(1);
}
@ -305,7 +306,7 @@ static int control_setdmaster(struct ctdb_context *ctdb, int argc, const char **
uint32_t vnn, dbid, dmaster;
int ret;
if (argc < 2) {
if (argc < 3) {
usage();
}
@ -321,6 +322,29 @@ static int control_setdmaster(struct ctdb_context *ctdb, int argc, const char **
return 0;
}
/*
clears a database
*/
static int control_cleardb(struct ctdb_context *ctdb, int argc, const char **argv)
{
uint32_t vnn, dbid;
int ret;
if (argc < 2) {
usage();
}
vnn = strtoul(argv[0], NULL, 0);
dbid = strtoul(argv[1], NULL, 0);
ret = ctdb_cleardb(ctdb, vnn, ctdb, dbid);
if (ret != 0) {
printf("Unable to clear db for node %u db:0x%08x\n", vnn, dbid);
return ret;
}
return 0;
}
/*
ping all node
*/
@ -451,6 +475,8 @@ int main(int argc, const char *argv[])
ret = control_setvnnmap(ctdb, extra_argc-1, extra_argv+1);
} else if (strcmp(control, "setdmaster") == 0) {
ret = control_setdmaster(ctdb, extra_argc-1, extra_argv+1);
} else if (strcmp(control, "cleardb") == 0) {
ret = control_cleardb(ctdb, extra_argc-1, extra_argv+1);
} else if (strcmp(control, "ping") == 0) {
ret = control_ping(ctdb, extra_argc-1, extra_argv+1);
} else if (strcmp(control, "debug") == 0) {