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mariadb/ndb/include/mgmapi/mgmapi.h
jon@gigan. 937190d3fb For generated NDB documentation: 
Some grammar/spelling fixes in mgmapi.h; 
also some tests of formatting commands.
2004-12-28 01:39:03 +10:00

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/* Copyright (C) 2003 MySQL AB
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef MGMAPI_H
#define MGMAPI_H
/**
* @mainpage NDB Cluster Management API
*
* The NDB Cluster Management API (MGM API) is a C API
* that is used to:
* - Start and stop database nodes (DB nodes)
* - Start and stop NDB Cluster backups
* - Control the NDB Cluster log
* - Perform other administrative tasks
*
* @section General Concepts
*
* Each MGM API function needs a management server handle
* of type <code>Mgm_C_Api::NdbMgmHandle</code>.
* This handle is initally created by calling the
* function <code>ndb_mgm_create_handle()</code>.
*
* A function can return:
* -# An integer value.
* A value of <b>-1</b> indicates an error.
* -# A pointer value. A <var>NULL</var> value indicates an error;
* Otherwise, the return value must be <code>free()</code>ed by the user of the MGM API.
*
* Error conditions can be identified by using the appropriate
* error-reporting functions.
*/
/** @addtogroup MGM_C_API
* @{
*/
#include <ndb_types.h>
#include "mgmapi_config_parameters.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* The NdbMgmHandle.
*/
typedef struct ndb_mgm_handle * NdbMgmHandle;
/**
* NDB Cluster node types
*/
enum ndb_mgm_node_type {
NDB_MGM_NODE_TYPE_UNKNOWN = -1, /*< Node type not known*/
NDB_MGM_NODE_TYPE_API = NODE_TYPE_API,/*< An application node (API)*/
NDB_MGM_NODE_TYPE_NDB = NODE_TYPE_DB, /*< A database node (DB)*/
NDB_MGM_NODE_TYPE_MGM = NODE_TYPE_MGM,/*< A mgmt server node (MGM)*/
NDB_MGM_NODE_TYPE_REP = NODE_TYPE_REP,/*< A replication node */
NDB_MGM_NODE_TYPE_MIN = 0, /*< Min valid value*/
NDB_MGM_NODE_TYPE_MAX = 3 /*< Max valid value*/
};
/**
* Database node status
*/
enum ndb_mgm_node_status {
NDB_MGM_NODE_STATUS_UNKNOWN = 0, /*< Node status not known*/
NDB_MGM_NODE_STATUS_NO_CONTACT = 1, /*< No contact with node*/
NDB_MGM_NODE_STATUS_NOT_STARTED = 2, /*< Has not run starting protocol*/
NDB_MGM_NODE_STATUS_STARTING = 3, /*< Is running starting protocol*/
NDB_MGM_NODE_STATUS_STARTED = 4, /*< Running*/
NDB_MGM_NODE_STATUS_SHUTTING_DOWN = 5, /*< Is shutting down*/
NDB_MGM_NODE_STATUS_RESTARTING = 6, /*< Is restarting*/
NDB_MGM_NODE_STATUS_SINGLEUSER = 7, /*< Maintenance mode*/
NDB_MGM_NODE_STATUS_RESUME = 8, /*< Resume mode*/
NDB_MGM_NODE_STATUS_MIN = 0, /*< Min valid value*/
NDB_MGM_NODE_STATUS_MAX = 6 /*< Max valid value*/
};
/**
* Error codes
*/
enum ndb_mgm_error {
NDB_MGM_NO_ERROR = 0,
/* Request for service errors */
NDB_MGM_ILLEGAL_CONNECT_STRING = 1001,
NDB_MGM_ILLEGAL_PORT_NUMBER = 1002,
NDB_MGM_ILLEGAL_SOCKET = 1003,
NDB_MGM_ILLEGAL_IP_ADDRESS = 1004,
NDB_MGM_ILLEGAL_SERVER_HANDLE = 1005,
NDB_MGM_ILLEGAL_SERVER_REPLY = 1006,
NDB_MGM_ILLEGAL_NUMBER_OF_NODES = 1007,
NDB_MGM_ILLEGAL_NODE_STATUS = 1008,
NDB_MGM_OUT_OF_MEMORY = 1009,
NDB_MGM_SERVER_NOT_CONNECTED = 1010,
NDB_MGM_COULD_NOT_CONNECT_TO_SOCKET = 1011,
/* Service errors - Start/Stop Node or System */
NDB_MGM_START_FAILED = 2001,
NDB_MGM_STOP_FAILED = 2002,
NDB_MGM_RESTART_FAILED = 2003,
/* Service errors - Backup */
NDB_MGM_COULD_NOT_START_BACKUP = 3001,
NDB_MGM_COULD_NOT_ABORT_BACKUP = 3002,
/* Service errors - Single User Mode */
NDB_MGM_COULD_NOT_ENTER_SINGLE_USER_MODE = 4001,
NDB_MGM_COULD_NOT_EXIT_SINGLE_USER_MODE = 4002,
/* Usage errors */
NDB_MGM_USAGE_ERROR = 5001
};
struct Ndb_Mgm_Error_Msg {
enum ndb_mgm_error code;
const char * msg;
};
const struct Ndb_Mgm_Error_Msg ndb_mgm_error_msgs[] = {
{ NDB_MGM_NO_ERROR, "No error" },
{ NDB_MGM_ILLEGAL_CONNECT_STRING, "Illegal connect string" },
{ NDB_MGM_ILLEGAL_PORT_NUMBER, "Illegal port number" },
{ NDB_MGM_ILLEGAL_SOCKET, "Illegal socket" },
{ NDB_MGM_ILLEGAL_IP_ADDRESS, "Illegal IP address" },
{ NDB_MGM_ILLEGAL_SERVER_HANDLE, "Illegal server handle" },
{ NDB_MGM_ILLEGAL_SERVER_REPLY, "Illegal reply from server" },
{ NDB_MGM_ILLEGAL_NUMBER_OF_NODES, "Illegal number of nodes" },
{ NDB_MGM_ILLEGAL_NODE_STATUS, "Illegal node status" },
{ NDB_MGM_OUT_OF_MEMORY, "Out of memory" },
{ NDB_MGM_SERVER_NOT_CONNECTED, "Management server not connected" },
{ NDB_MGM_COULD_NOT_CONNECT_TO_SOCKET, "Could not connect to socket" },
/* Service errors - Start/Stop Node or System */
{ NDB_MGM_START_FAILED, "Start failed" },
{ NDB_MGM_STOP_FAILED, "Stop failed" },
{ NDB_MGM_RESTART_FAILED, "Restart failed" },
/* Service errors - Backup */
{ NDB_MGM_COULD_NOT_START_BACKUP, "Could not start backup" },
{ NDB_MGM_COULD_NOT_ABORT_BACKUP, "Could not abort backup" },
/* Service errors - Single User Mode */
{ NDB_MGM_COULD_NOT_ENTER_SINGLE_USER_MODE,
"Could not enter single user mode" },
{ NDB_MGM_COULD_NOT_EXIT_SINGLE_USER_MODE,
"Could not exit single user mode" },
/* Usage errors */
{ NDB_MGM_USAGE_ERROR,
"Usage error" }
};
const int ndb_mgm_noOfErrorMsgs =
sizeof(ndb_mgm_error_msgs)/sizeof(struct Ndb_Mgm_Error_Msg);
/**
* Structure returned by ndb_mgm_get_status
*/
struct ndb_mgm_node_state {
int node_id; /*< NDB Cluster node id*/
enum ndb_mgm_node_type node_type; /*< Type of NDB Cluster node*/
enum ndb_mgm_node_status node_status; /*< State of node*/
int start_phase; /*< Start phase.
*< @note Start phase is only
*< valid if
*< node_type is
*< NDB_MGM_NODE_TYPE_NDB and
*< node_status is
*< NDB_MGM_NODE_STATUS_STARTING
*/
int dynamic_id; /*< Id for heartbeats and
*< master take-over
*< (only valid for DB nodes)
*/
int node_group; /*< Node group of node
*< (only valid for DB nodes)*/
int version; /*< Internal version number*/
int connect_count; /*< Number of times node has connected
*< or disconnected to the mgm srv
*/
char connect_address[sizeof("000.000.000.000")+1];
};
/**
* Cluster status
*/
struct ndb_mgm_cluster_state {
int no_of_nodes; /*< No of entries in the
*< node_states array
*/
struct ndb_mgm_node_state /*< An array with node_states*/
node_states[1];
const char *hostname;
};
/**
* Default reply from the server
*/
struct ndb_mgm_reply {
int return_code; /*< 0 if successful,
*< otherwise error code.
*/
char message[256]; /*< Error or reply message.*/
};
/**
* Default information types
*/
enum ndb_mgm_info {
NDB_MGM_INFO_CLUSTER, /*< ?*/
NDB_MGM_INFO_CLUSTERLOG /*< Cluster log*/
};
/**
* Signal log modes
* (Used only in the development of NDB Cluster.)
*/
enum ndb_mgm_signal_log_mode {
NDB_MGM_SIGNAL_LOG_MODE_IN, /*< Log receiving signals */
NDB_MGM_SIGNAL_LOG_MODE_OUT, /*< Log sending signals*/
NDB_MGM_SIGNAL_LOG_MODE_INOUT, /*< Log both sending/receiving*/
NDB_MGM_SIGNAL_LOG_MODE_OFF /*< Log off*/
};
/**
* Log severities (used to filter the cluster log)
*/
enum ndb_mgm_clusterlog_level {
NDB_MGM_CLUSTERLOG_OFF = 0, /*< Cluster log off*/
NDB_MGM_CLUSTERLOG_DEBUG = 1, /*< Used in NDB Cluster
*< developement
*/
NDB_MGM_CLUSTERLOG_INFO = 2, /*< Informational messages*/
NDB_MGM_CLUSTERLOG_WARNING = 3, /*< Conditions that are not
*< error condition, but
*< might require handling
*/
NDB_MGM_CLUSTERLOG_ERROR = 4, /*< Conditions that should be
*< corrected
*/
NDB_MGM_CLUSTERLOG_CRITICAL = 5, /*< Critical conditions, like
*< device errors or out of
*< resources
*/
NDB_MGM_CLUSTERLOG_ALERT = 6, /*< A condition that should be
*< corrected immediately,
*< such as a corrupted system
*/
NDB_MGM_CLUSTERLOG_ALL = 7 /*< All severities on*/
};
/**
* Log categories
*/
enum ndb_mgm_event_category {
/**
* Invalid
*/
NDB_MGM_ILLEGAL_EVENT_CATEGORY = -1,
/**
* Events during all kinds of startups
*/
NDB_MGM_EVENT_CATEGORY_STARTUP = CFG_LOGLEVEL_STARTUP,
/**
* Events during shutdown
*/
NDB_MGM_EVENT_CATEGORY_SHUTDOWN = CFG_LOGLEVEL_SHUTDOWN,
/**
* Transaction statistics (Job level, TCP/IP speed)
*/
NDB_MGM_EVENT_CATEGORY_STATISTIC = CFG_LOGLEVEL_STATISTICS,
NDB_MGM_EVENT_CATEGORY_CHECKPOINT = CFG_LOGLEVEL_CHECKPOINT,
NDB_MGM_EVENT_CATEGORY_NODE_RESTART = CFG_LOGLEVEL_NODERESTART,
NDB_MGM_EVENT_CATEGORY_CONNECTION = CFG_LOGLEVEL_CONNECTION,
NDB_MGM_EVENT_CATEGORY_DEBUG = CFG_LOGLEVEL_DEBUG,
NDB_MGM_EVENT_CATEGORY_INFO = CFG_LOGLEVEL_INFO,
NDB_MGM_EVENT_CATEGORY_WARNING = CFG_LOGLEVEL_WARNING,
NDB_MGM_EVENT_CATEGORY_ERROR = CFG_LOGLEVEL_ERROR,
NDB_MGM_EVENT_CATEGORY_GREP = CFG_LOGLEVEL_GREP,
NDB_MGM_EVENT_CATEGORY_BACKUP = CFG_LOGLEVEL_BACKUP,
NDB_MGM_MIN_EVENT_CATEGORY = CFG_MIN_LOGLEVEL,
NDB_MGM_MAX_EVENT_CATEGORY = CFG_MAX_LOGLEVEL
};
/***************************************************************************/
/**
* @name Functions: Error Handling
* @{
*/
/**
* Get latest error associated with a management server handle
*
* @param handle Management handle
* @return Latest error code
*/
int ndb_mgm_get_latest_error(const NdbMgmHandle handle);
/**
* Get latest main error message associated with a handle
*
* @param handle Management handle.
* @return Latest error message
*/
const char * ndb_mgm_get_latest_error_msg(const NdbMgmHandle handle);
/**
* Get latest error description associated with a handle
*
* The error description gives some additional information to
* the error message.
*
* @param handle Management handle.
* @return Latest error description
*/
const char * ndb_mgm_get_latest_error_desc(const NdbMgmHandle handle);
#ifndef DOXYGEN_SHOULD_SKIP_DEPRECATED
/**
* Get latest internal source code error line associated with a handle
*
* @param handle Management handle.
* @return Latest internal source code line of latest error
* @deprecated
*/
int ndb_mgm_get_latest_error_line(const NdbMgmHandle handle);
#endif
/** @} *********************************************************************/
/**
* @name Functions: Create/Destroy Management Server Handles
* @{
*/
/**
* Create a handle to a management server
*
* @return A management handle<br>
* or NULL if no management handle could be created.
*/
NdbMgmHandle ndb_mgm_create_handle();
/**
* Destroy a management server handle
*
* @param handle Management handle
*/
void ndb_mgm_destroy_handle(NdbMgmHandle * handle);
/** @} *********************************************************************/
/**
* @name Functions: Connect/Disconnect Management Server
* @{
*/
/**
* Set connect string to management server
*
* @param handle Management handle
* @param connect_string Connect string to the management server,
*
* @return -1 on error.
*/
int ndb_mgm_set_connectstring(NdbMgmHandle handle,
const char *connect_string);
/**
* Get connectstring used for connection
*
* @note returns what the connectstring defaults to if the above call has
* not been performed
*
* @param handle Management handle
*
* @return connectstring
*/
const char *ndb_mgm_get_connectstring(NdbMgmHandle handle, char *buf, int buf_sz);
/**
* Connect to a management server
*
* @param handle Management handle.
* @return -1 on error.
*/
int ndb_mgm_connect(NdbMgmHandle handle, int no_retries,
int retry_delay_in_seconds, int verbose);
/**
* Disconnect from a management server
*
* @param handle Management handle.
* @return -1 on error.
*/
int ndb_mgm_disconnect(NdbMgmHandle handle);
/**
* Get nodeid used in the connection
*
* @param handle Management handle
*
* @return node id
*/
int ndb_mgm_get_configuration_nodeid(NdbMgmHandle handle);
/**
* Get port used in the connection
*
* @param handle Management handle
*
* @return port
*/
int ndb_mgm_get_connected_port(NdbMgmHandle handle);
/**
* Get host used in the connection
*
* @param handle Management handle
*
* @return hostname
*/
const char *ndb_mgm_get_connected_host(NdbMgmHandle handle);
/** @} *********************************************************************/
/**
* @name Functions: Convert between different data formats
* @{
*/
/**
* Convert a string to a ndb_mgm_node_type
*
* @param type Node type as string.
* @return NDB_MGM_NODE_TYPE_UNKNOWN if invalid string.
*/
enum ndb_mgm_node_type ndb_mgm_match_node_type(const char * type);
/**
* Convert an ndb_mgm_node_type to a string
*
* @param type Node type.
* @return NULL if invalid id.
*/
const char * ndb_mgm_get_node_type_string(enum ndb_mgm_node_type type);
/**
* Convert an ndb_mgm_node_type to a alias string
*
* @param type Node type.
* @return NULL if invalid id.
*/
const char * ndb_mgm_get_node_type_alias_string(enum ndb_mgm_node_type type,
const char **str);
/**
* Convert a string to a ndb_mgm_node_status
*
* @param status NDB node status string.
* @return NDB_MGM_NODE_STATUS_UNKNOWN if invalid string.
*/
enum ndb_mgm_node_status ndb_mgm_match_node_status(const char * status);
/**
* Convert an id to a string
*
* @param status NDB node status.
* @return NULL if invalid id.
*/
const char * ndb_mgm_get_node_status_string(enum ndb_mgm_node_status status);
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
ndb_mgm_event_category ndb_mgm_match_event_category(const char *);
const char * ndb_mgm_get_event_category_string(enum ndb_mgm_event_category);
#endif
/** @} *********************************************************************/
/**
* @name Functions: State of cluster
* @{
*/
/**
* Get status of the nodes in an NDB Cluster
*
* Note the caller must free the pointer returned.
*
* @param handle Management handle.
*
* @return Cluster state (or NULL on error).
*/
struct ndb_mgm_cluster_state * ndb_mgm_get_status(NdbMgmHandle handle);
/** @} *********************************************************************/
/**
* @name Functions: Start/stop nodes
* @{
*/
/**
* Stop database nodes
*
* @param handle Management handle.
* @param no_of_nodes no of database nodes<br>
* 0 - means all database nodes in cluster<br>
* n - Means stop n node(s) specified in the
* array node_list
* @param node_list List of node ids of database nodes to be stopped
*
* @return No of nodes stopped (or -1 on error)
*
* @note The function is equivalent
* to ndb_mgm_stop2(handle, no_of_nodes, node_list, 0)
*/
int ndb_mgm_stop(NdbMgmHandle handle, int no_of_nodes,
const int * node_list);
/**
* Stop database nodes
*
* @param handle Management handle.
* @param no_of_nodes No of database nodes<br>
* 0 - means all database nodes in cluster<br>
* n - Means stop n node(s) specified in
* the array node_list
* @param node_list List of node ids of database nodes to be stopped
* @param abort Don't perform gracefull stop,
* but rather stop immediatly
*
* @return No of nodes stopped (or -1 on error).
*/
int ndb_mgm_stop2(NdbMgmHandle handle, int no_of_nodes,
const int * node_list, int abort);
/**
* Restart database nodes
*
* @param handle Management handle.
* @param no_of_nodes No of database nodes<br>
* 0 - means all database nodes in cluster<br>
* n - Means stop n node(s) specified in the
* array node_list
* @param node_list List of node ids of database nodes to be stopped
*
* @return No of nodes stopped (or -1 on error).
*
* @note The function is equivalent to
* ndb_mgm_restart2(handle, no_of_nodes, node_list, 0, 0, 0);
*/
int ndb_mgm_restart(NdbMgmHandle handle, int no_of_nodes,
const int * node_list);
/**
* Restart database nodes
*
* @param handle Management handle.
* @param no_of_nodes No of database nodes<br>
* 0 - means all database nodes in cluster<br>
* n - Means stop n node(s) specified in the
* array node_list
* @param node_list List of node ids of database nodes to be stopped
* @param initial Remove filesystem from node(s) restarting
* @param nostart Don't actually start node(s) but leave them
* waiting for start command
* @param abort Don't perform gracefull restart,
* but rather restart immediatly
*
* @return No of nodes stopped (or -1 on error).
*/
int ndb_mgm_restart2(NdbMgmHandle handle, int no_of_nodes,
const int * node_list, int initial,
int nostart, int abort);
/**
* Start database nodes
*
* @param handle Management handle.
* @param no_of_nodes No of database nodes<br>
* 0 - means all database nodes in cluster<br>
* n - Means start n node(s) specified in
* the array node_list
* @param node_list List of node ids of database nodes to be started
*
* @return No of nodes started (or -1 on error).
*
* @note The nodes to start must have been started with nostart(-n)
* argument.
* This means that the database node binary is started and
* waiting for a START management command which will
* actually start the database node functionality
*/
int ndb_mgm_start(NdbMgmHandle handle,
int no_of_nodes,
const int * node_list);
/** @} *********************************************************************/
/**
* @name Functions: Logging and Statistics
* @{
*/
/**
* Filter cluster log
*
* @param handle NDB management handle.
* @param level A cluster log level to filter.
* @param reply Reply message.
*
* @return -1 on error.
*/
int ndb_mgm_filter_clusterlog(NdbMgmHandle handle,
enum ndb_mgm_clusterlog_level level,
struct ndb_mgm_reply* reply);
/**
* Get log filter
*
* @param handle NDB management handle
*
* @return A vector of seven elements,
* where each element contains
* 1 if a severity is enabled and 0 if not.
* A severity is stored at position
* ndb_mgm_clusterlog_level,
* for example the "error" level is stored in position
* [NDB_MGM_CLUSTERLOG_ERROR-1].
* The first element in the vector signals
* whether the clusterlog
* is disabled or enabled.
*/
unsigned int *ndb_mgm_get_logfilter(NdbMgmHandle handle);
/**
* Set log category and levels for the cluster log
*
* @param handle NDB management handle.
* @param nodeId Node id.
* @param category Event category.
* @param level Log level (0-15).
* @param reply Reply message.
* @return -1 on error.
*/
int ndb_mgm_set_loglevel_clusterlog(NdbMgmHandle handle,
int nodeId,
enum ndb_mgm_event_category category,
int level,
struct ndb_mgm_reply* reply);
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
/**
* Set log category and levels for the Node
*
* @param handle NDB management handle.
* @param nodeId Node id.
* @param category Event category.
* @param level Log level (0-15).
* @param reply Reply message.
* @return -1 on error.
*/
int ndb_mgm_set_loglevel_node(NdbMgmHandle handle,
int nodeId,
enum ndb_mgm_event_category category,
int level,
struct ndb_mgm_reply* reply);
/**
* Returns the port number where statistics information is sent
*
* @param handle NDB management handle.
* @param reply Reply message.
* @return -1 on error.
*/
int ndb_mgm_get_stat_port(NdbMgmHandle handle,
struct ndb_mgm_reply* reply);
#endif
/** @} *********************************************************************/
/**
* @name Functions: Backup
* @{
*/
/**
* Start backup
*
* @param handle NDB management handle.
* @param backup_id Backup id is returned from function.
* @param reply Reply message.
* @return -1 on error.
*/
int ndb_mgm_start_backup(NdbMgmHandle handle, unsigned int* backup_id,
struct ndb_mgm_reply* reply);
/**
* Abort backup
*
* @param handle NDB management handle.
* @param backup_id Backup Id.
* @param reply Reply message.
* @return -1 on error.
*/
int ndb_mgm_abort_backup(NdbMgmHandle handle, unsigned int backup_id,
struct ndb_mgm_reply* reply);
/** @} *********************************************************************/
/**
* @name Functions: Single User Mode
* @{
*/
/**
* Enter Single user mode
*
* @param handle NDB management handle.
* @param nodeId Node Id of the single user node
* @param reply Reply message.
* @return -1 on error.
*/
int ndb_mgm_enter_single_user(NdbMgmHandle handle, unsigned int nodeId,
struct ndb_mgm_reply* reply);
/**
* Exit Single user mode
*
* @param handle NDB management handle.
* @param nodeId Node Id of the single user node
* @param reply Reply message.
*
* @return -1 on error.
*/
int ndb_mgm_exit_single_user(NdbMgmHandle handle,
struct ndb_mgm_reply* reply);
/**
* Listen event
*
* @param filter pairs of { level, category } that will be
* pushed to fd, level=0 ends lists
*
* @return fd which events will be pushed to
*/
int ndb_mgm_listen_event(NdbMgmHandle handle, int filter[]);
/**
* Get configuration
* @param handle NDB management handle.
* @param version Version of configuration, 0 means latest
* @see MAKE_VERSION
*
* @return configuration
*
* @note the caller must call ndb_mgm_detroy_configuration
*/
struct ndb_mgm_configuration * ndb_mgm_get_configuration(NdbMgmHandle handle,
unsigned version);
void ndb_mgm_destroy_configuration(struct ndb_mgm_configuration *);
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
int ndb_mgm_alloc_nodeid(NdbMgmHandle handle,
unsigned version, int nodetype);
/**
* Config iterator
*/
typedef struct ndb_mgm_configuration_iterator ndb_mgm_configuration_iterator;
ndb_mgm_configuration_iterator* ndb_mgm_create_configuration_iterator
(struct ndb_mgm_configuration *, unsigned type_of_section);
void ndb_mgm_destroy_iterator(ndb_mgm_configuration_iterator*);
int ndb_mgm_first(ndb_mgm_configuration_iterator*);
int ndb_mgm_next(ndb_mgm_configuration_iterator*);
int ndb_mgm_valid(const ndb_mgm_configuration_iterator*);
int ndb_mgm_find(ndb_mgm_configuration_iterator*,
int param, unsigned value);
int ndb_mgm_get_int_parameter(const ndb_mgm_configuration_iterator*,
int param, unsigned * value);
int ndb_mgm_get_int64_parameter(const ndb_mgm_configuration_iterator*,
int param, Uint64 * value);
int ndb_mgm_get_string_parameter(const ndb_mgm_configuration_iterator*,
int param, const char ** value);
int ndb_mgm_purge_stale_sessions(NdbMgmHandle handle, char **);
int ndb_mgm_check_connection(NdbMgmHandle handle);
#endif
#ifdef __cplusplus
}
#endif
/** @} */
#endif
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