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ODBC transaction support

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@177320 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2009-02-19 00:26:01 +00:00
parent a150908f3f
commit a1f583177e
5 changed files with 854 additions and 87 deletions
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38
include/asterisk/res_odbc.h
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@@ -35,25 +35,30 @@
typedef enum { ODBC_SUCCESS=0, ODBC_FAIL=-1} odbc_status;
/*! \brief Flags for use with ast_odbc_request_obj2 */
enum {
RES_ODBC_SANITY_CHECK = (1 << 0),
RES_ODBC_INDEPENDENT_CONNECTION = (1 << 1),
};
/*! \brief ODBC container */
struct odbc_obj {
ast_mutex_t lock;
SQLHDBC con; /* ODBC Connection Handle */
struct odbc_class *parent; /* Information about the connection is protected */
struct timeval last_used;
SQLHDBC con; /*!< ODBC Connection Handle */
struct odbc_class *parent; /*!< Information about the connection is protected */
struct timeval last_used; /*!< Used by idlecheck to determine if the connection should be renegotiated */
#ifdef DEBUG_THREADS
char file[80];
char function[80];
int lineno;
#endif
unsigned int used:1;
unsigned int used:1; /*!< Is this connection currently in use? */
unsigned int up:1;
unsigned int tx:1; /*!< Should this connection be unshared, regardless of the class setting? */
struct odbc_txn_frame *txf; /*!< Reference back to the transaction frame, if applicable */
AST_LIST_ENTRY(odbc_obj) list;
};
/*!\brief These aren't used in any API calls, but they are kept in a common
* location, simply for convenience and to avoid duplication.
*/
struct odbc_cache_columns {
char *name;
SQLSMALLINT type;
@@ -106,6 +111,13 @@ int ast_odbc_smart_execute(struct odbc_obj *obj, SQLHSTMT stmt) __attribute__((d
* thread which requests it. Note that all connections should be released
* when the thread is done by calling odbc_release_obj(), below.
*/
#ifdef DEBUG_THREADS
struct odbc_obj *_ast_odbc_request_obj2(const char *name, struct ast_flags flags, const char *file, const char *function, int lineno);
#define ast_odbc_request_obj2(a, b) _ast_odbc_request_obj2(a, b, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#else
struct odbc_obj *ast_odbc_request_obj2(const char *name, struct ast_flags flags);
#endif
#ifdef DEBUG_THREADS
struct odbc_obj *_ast_odbc_request_obj(const char *name, int check, const char *file, const char *function, int lineno);
#define ast_odbc_request_obj(a, b) _ast_odbc_request_obj(a, b, __FILE__, __PRETTY_FUNCTION__, __LINE__)
@@ -113,6 +125,18 @@ struct odbc_obj *_ast_odbc_request_obj(const char *name, int check, const char *
struct odbc_obj *ast_odbc_request_obj(const char *name, int check);
#endif
/*!
* \brief Retrieve a stored ODBC object, if a transaction has been started.
* \param chan Channel associated with the transaction.
* \param objname Name of the database handle. This name corresponds to the name passed
* to ast_odbc_request_obj2 (or formerly, to ast_odbc_request_obj). Note that the
* existence of this parameter name explicitly allows for multiple transactions to be open
* at once, albeit to different databases.
* \retval A stored ODBC object, if a transaction was already started.
* \retval NULL, if no transaction yet exists.
*/
struct odbc_obj *ast_odbc_retrieve_transaction_obj(struct ast_channel *chan, const char *objname);
/*!
* \brief Releases an ODBC object previously allocated by odbc_request_obj()
* \param obj The ODBC object