mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
a57991c0eb
(This used to be ctdb commit c4308805b997740b77e058c1a14b84cb400a7c30)
344 lines
11 KiB
C
344 lines
11 KiB
C
/*
|
|
ctdb database library
|
|
|
|
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 2 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, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef _CTDB_H
|
|
#define _CTDB_H
|
|
|
|
#define CTDB_IMMEDIATE_MIGRATION 0x00000001
|
|
struct ctdb_call {
|
|
int call_id;
|
|
TDB_DATA key;
|
|
TDB_DATA call_data;
|
|
TDB_DATA reply_data;
|
|
uint32_t status;
|
|
uint32_t flags;
|
|
};
|
|
|
|
/*
|
|
structure passed to a ctdb call backend function
|
|
*/
|
|
struct ctdb_call_info {
|
|
TDB_DATA key; /* record key */
|
|
TDB_DATA record_data; /* current data in the record */
|
|
TDB_DATA *new_data; /* optionally updated record data */
|
|
TDB_DATA *call_data; /* optionally passed from caller */
|
|
TDB_DATA *reply_data; /* optionally returned by function */
|
|
uint32_t status; /* optional reply status - defaults to zero */
|
|
};
|
|
|
|
#define CTDB_ERR_INVALID 1
|
|
#define CTDB_ERR_NOMEM 2
|
|
|
|
/*
|
|
ctdb flags
|
|
*/
|
|
#define CTDB_FLAG_SELF_CONNECT (1<<0)
|
|
#define CTDB_FLAG_TORTURE (1<<1)
|
|
|
|
/*
|
|
a message handler ID meaning "give me all messages"
|
|
*/
|
|
#define CTDB_SRVID_ALL (~(uint64_t)0)
|
|
|
|
/*
|
|
srvid type : RECOVERY
|
|
*/
|
|
#define CTDB_SRVTYPE_RECOVERY 0xF100000000000000LL
|
|
|
|
/*
|
|
a message handler ID meaning that the cluster has been reconfigured
|
|
*/
|
|
#define CTDB_SRVID_RECONFIGURE 0xF200000000000000LL
|
|
|
|
/*
|
|
a message handler ID meaning that an IP address has been released
|
|
*/
|
|
#define CTDB_SRVID_RELEASE_IP 0xF300000000000000LL
|
|
|
|
/* used on the domain socket, send a pdu to the local daemon */
|
|
#define CTDB_CURRENT_NODE 0xF0000001
|
|
/* send a broadcast to all nodes in the cluster, active or not */
|
|
#define CTDB_BROADCAST_ALL 0xF0000002
|
|
/* send a broadcast to all nodes in the current vnn map */
|
|
#define CTDB_BROADCAST_VNNMAP 0xF0000003
|
|
|
|
|
|
struct event_context;
|
|
|
|
/*
|
|
initialise ctdb subsystem
|
|
*/
|
|
struct ctdb_context *ctdb_init(struct event_context *ev);
|
|
|
|
/*
|
|
choose the transport
|
|
*/
|
|
int ctdb_set_transport(struct ctdb_context *ctdb, const char *transport);
|
|
|
|
/*
|
|
set the directory for the local databases
|
|
*/
|
|
int ctdb_set_tdb_dir(struct ctdb_context *ctdb, const char *dir);
|
|
|
|
/*
|
|
set some flags
|
|
*/
|
|
void ctdb_set_flags(struct ctdb_context *ctdb, unsigned flags);
|
|
|
|
/*
|
|
clear some flags
|
|
*/
|
|
void ctdb_clear_flags(struct ctdb_context *ctdb, unsigned flags);
|
|
|
|
/*
|
|
set max acess count before a dmaster migration
|
|
*/
|
|
void ctdb_set_max_lacount(struct ctdb_context *ctdb, unsigned count);
|
|
|
|
/*
|
|
tell ctdb what address to listen on, in transport specific format
|
|
*/
|
|
int ctdb_set_address(struct ctdb_context *ctdb, const char *address);
|
|
|
|
int ctdb_set_socketname(struct ctdb_context *ctdb, const char *socketname);
|
|
|
|
/*
|
|
tell ctdb what nodes are available. This takes a filename, which will contain
|
|
1 node address per line, in a transport specific format
|
|
*/
|
|
int ctdb_set_nlist(struct ctdb_context *ctdb, const char *nlist);
|
|
|
|
/*
|
|
start the ctdb protocol
|
|
*/
|
|
int ctdb_start(struct ctdb_context *ctdb);
|
|
int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork);
|
|
|
|
/*
|
|
attach to a ctdb database
|
|
*/
|
|
struct ctdb_db_context *ctdb_attach(struct ctdb_context *ctdb, const char *name);
|
|
|
|
/*
|
|
find an attached ctdb_db handle given a name
|
|
*/
|
|
struct ctdb_db_context *ctdb_db_handle(struct ctdb_context *ctdb, const char *name);
|
|
|
|
/*
|
|
error string for last ctdb error
|
|
*/
|
|
const char *ctdb_errstr(struct ctdb_context *);
|
|
|
|
/* a ctdb call function */
|
|
typedef int (*ctdb_fn_t)(struct ctdb_call_info *);
|
|
|
|
/*
|
|
setup a ctdb call function
|
|
*/
|
|
int ctdb_set_call(struct ctdb_db_context *ctdb_db, ctdb_fn_t fn, uint32_t id);
|
|
|
|
|
|
|
|
/*
|
|
make a ctdb call. The associated ctdb call function will be called on the DMASTER
|
|
for the given record
|
|
*/
|
|
int ctdb_call(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
|
|
|
|
/*
|
|
initiate an ordered ctdb cluster shutdown
|
|
this function will never return
|
|
*/
|
|
void ctdb_shutdown(struct ctdb_context *ctdb);
|
|
|
|
/* return vnn of this node */
|
|
uint32_t ctdb_get_vnn(struct ctdb_context *ctdb);
|
|
|
|
/*
|
|
return the number of nodes
|
|
*/
|
|
uint32_t ctdb_get_num_nodes(struct ctdb_context *ctdb);
|
|
|
|
/* setup a handler for ctdb messages */
|
|
typedef void (*ctdb_message_fn_t)(struct ctdb_context *, uint64_t srvid,
|
|
TDB_DATA data, void *);
|
|
int ctdb_set_message_handler(struct ctdb_context *ctdb, uint64_t srvid,
|
|
ctdb_message_fn_t handler,
|
|
void *private_data);
|
|
|
|
|
|
int ctdb_call(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
|
|
struct ctdb_client_call_state *ctdb_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
|
|
int ctdb_call_recv(struct ctdb_client_call_state *state, struct ctdb_call *call);
|
|
|
|
/* send a ctdb message */
|
|
int ctdb_send_message(struct ctdb_context *ctdb, uint32_t vnn,
|
|
uint64_t srvid, TDB_DATA data);
|
|
|
|
|
|
/*
|
|
Fetch a ctdb record from a remote node
|
|
. Underneath this will force the
|
|
dmaster for the record to be moved to the local node.
|
|
*/
|
|
struct ctdb_record_handle *ctdb_fetch_lock(struct ctdb_db_context *ctdb_db, TALLOC_CTX *mem_ctx,
|
|
TDB_DATA key, TDB_DATA *data);
|
|
|
|
int ctdb_record_store(struct ctdb_record_handle *h, TDB_DATA data);
|
|
|
|
int ctdb_register_message_handler(struct ctdb_context *ctdb,
|
|
TALLOC_CTX *mem_ctx,
|
|
uint64_t srvid,
|
|
ctdb_message_fn_t handler,
|
|
void *private_data);
|
|
|
|
struct ctdb_db_context *find_ctdb_db(struct ctdb_context *ctdb, uint32_t id);
|
|
|
|
|
|
struct ctdb_context *ctdb_cmdline_client(struct event_context *ev);
|
|
|
|
struct ctdb_statistics;
|
|
int ctdb_ctrl_statistics(struct ctdb_context *ctdb, uint32_t destnode, struct ctdb_statistics *status);
|
|
|
|
int ctdb_ctrl_shutdown(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode);
|
|
|
|
struct ctdb_vnn_map;
|
|
int ctdb_ctrl_getvnnmap(struct ctdb_context *ctdb,
|
|
struct timeval timeout, uint32_t destnode,
|
|
TALLOC_CTX *mem_ctx, struct ctdb_vnn_map **vnnmap);
|
|
int ctdb_ctrl_setvnnmap(struct ctdb_context *ctdb,
|
|
struct timeval timeout, uint32_t destnode,
|
|
TALLOC_CTX *mem_ctx, struct ctdb_vnn_map *vnnmap);
|
|
|
|
/* table that contains a list of all dbids on a node
|
|
*/
|
|
struct ctdb_dbid_map {
|
|
uint32_t num;
|
|
uint32_t dbids[1];
|
|
};
|
|
int ctdb_ctrl_getdbmap(struct ctdb_context *ctdb,
|
|
struct timeval timeout, uint32_t destnode,
|
|
TALLOC_CTX *mem_ctx, struct ctdb_dbid_map **dbmap);
|
|
|
|
|
|
struct ctdb_node_map;
|
|
|
|
int ctdb_ctrl_getnodemap(struct ctdb_context *ctdb,
|
|
struct timeval timeout, uint32_t destnode,
|
|
TALLOC_CTX *mem_ctx, struct ctdb_node_map **nodemap);
|
|
|
|
struct ctdb_key_list {
|
|
uint32_t dbid;
|
|
uint32_t num;
|
|
TDB_DATA *keys;
|
|
struct ctdb_ltdb_header *headers;
|
|
TDB_DATA *data;
|
|
};
|
|
int ctdb_ctrl_pulldb(struct ctdb_context *ctdb, uint32_t destnode, uint32_t dbid, uint32_t lmaster, TALLOC_CTX *mem_ctx, struct ctdb_key_list *keys);
|
|
int ctdb_ctrl_copydb(struct ctdb_context *ctdb,
|
|
struct timeval timeout, uint32_t sourcenode,
|
|
uint32_t destnode, uint32_t dbid, uint32_t lmaster,
|
|
TALLOC_CTX *mem_ctx);
|
|
|
|
int ctdb_ctrl_getdbpath(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t dbid, TALLOC_CTX *mem_ctx, const char **path);
|
|
int ctdb_ctrl_getdbname(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t dbid, TALLOC_CTX *mem_ctx, const char **name);
|
|
int ctdb_ctrl_createdb(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, TALLOC_CTX *mem_ctx, const char *name);
|
|
|
|
int ctdb_ctrl_process_exists(struct ctdb_context *ctdb, uint32_t destnode, pid_t pid);
|
|
|
|
int ctdb_ctrl_ping(struct ctdb_context *ctdb, uint32_t destnode);
|
|
|
|
int ctdb_ctrl_get_config(struct ctdb_context *ctdb);
|
|
|
|
int ctdb_ctrl_get_debuglevel(struct ctdb_context *ctdb, uint32_t destnode, uint32_t *level);
|
|
int ctdb_ctrl_set_debuglevel(struct ctdb_context *ctdb, uint32_t destnode, uint32_t level);
|
|
|
|
/*
|
|
change dmaster for all keys in the database to the new value
|
|
*/
|
|
int ctdb_ctrl_setdmaster(struct ctdb_context *ctdb,
|
|
struct timeval timeout, uint32_t destnode,
|
|
TALLOC_CTX *mem_ctx, uint32_t dbid, uint32_t dmaster);
|
|
|
|
/*
|
|
delete all records from a tdb
|
|
*/
|
|
int ctdb_ctrl_cleardb(struct ctdb_context *ctdb, uint32_t destnode, TALLOC_CTX *mem_ctx, uint32_t dbid);
|
|
|
|
/*
|
|
write a record on a specific db (this implicitely updates dmaster of the record to locally be the vnn of the node where the control is executed on)
|
|
*/
|
|
int ctdb_ctrl_write_record(struct ctdb_context *ctdb, uint32_t destnode, TALLOC_CTX *mem_ctx, uint32_t dbid, TDB_DATA key, TDB_DATA data);
|
|
|
|
#define CTDB_RECOVERY_NORMAL 0
|
|
#define CTDB_RECOVERY_ACTIVE 1
|
|
|
|
/*
|
|
get the recovery mode of a remote node
|
|
*/
|
|
int ctdb_ctrl_getrecmode(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t *recmode);
|
|
/*
|
|
set the recovery mode of a remote node
|
|
*/
|
|
int ctdb_ctrl_setrecmode(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t recmode);
|
|
/*
|
|
get the monitoring mode of a remote node
|
|
*/
|
|
int ctdb_ctrl_getmonmode(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t *monmode);
|
|
/*
|
|
set the monitoringmode of a remote node
|
|
*/
|
|
int ctdb_ctrl_setmonmode(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t monmode);
|
|
|
|
/*
|
|
get the recovery master of a remote node
|
|
*/
|
|
int ctdb_ctrl_getrecmaster(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t *recmaster);
|
|
/*
|
|
set the recovery master of a remote node
|
|
*/
|
|
int ctdb_ctrl_setrecmaster(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t recmaster);
|
|
|
|
uint32_t *ctdb_get_connected_nodes(struct ctdb_context *ctdb,
|
|
struct timeval timeout,
|
|
TALLOC_CTX *mem_ctx,
|
|
uint32_t *num_nodes);
|
|
|
|
int ctdb_statistics_reset(struct ctdb_context *ctdb, uint32_t destnode);
|
|
|
|
int ctdb_set_logfile(struct ctdb_context *ctdb, const char *logfile);
|
|
|
|
typedef int (*ctdb_traverse_func)(struct ctdb_context *, TDB_DATA, TDB_DATA, void *);
|
|
int ctdb_traverse(struct ctdb_db_context *ctdb_db, ctdb_traverse_func fn, void *private_data);
|
|
|
|
int ctdb_dump_db(struct ctdb_db_context *ctdb_db, FILE *f);
|
|
|
|
/*
|
|
get the pid of a ctdb daemon
|
|
*/
|
|
int ctdb_ctrl_getpid(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t *pid);
|
|
|
|
int ctdb_ctrl_freeze(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode);
|
|
int ctdb_ctrl_thaw(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode);
|
|
|
|
int ctdb_ctrl_getvnn(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode);
|
|
|
|
#endif
|