[Asterisk-cvs] asterisk/res res_config_odbc.c, 1.23, 1.24 res_odbc.c, 1.11, 1.12

markster at lists.digium.com markster at lists.digium.com
Thu Feb 17 10:31:56 CST 2005


Update of /usr/cvsroot/asterisk/res
In directory mongoose.digium.com:/tmp/cvs-serv26735/res

Modified Files:
	res_config_odbc.c res_odbc.c 
Log Message:
Merge anthm's ODBC sanity check fix (bug #3529)


Index: res_config_odbc.c
===================================================================
RCS file: /usr/cvsroot/asterisk/res/res_config_odbc.c,v
retrieving revision 1.23
retrieving revision 1.24
diff -u -d -r1.23 -r1.24
--- res_config_odbc.c	25 Jan 2005 06:10:20 -0000	1.23
+++ res_config_odbc.c	17 Feb 2005 16:31:08 -0000	1.24
@@ -57,7 +57,7 @@
 	if (!table)
 		return NULL;
 
-	obj = fetch_odbc_obj(database);
+	obj = fetch_odbc_obj(database, 0);
 	if (!obj)
 		return NULL;
 
@@ -95,8 +95,8 @@
 		newval = va_arg(ap, const char *);
 		SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(newval), 0, (void *)newval, 0, NULL);
 	}
-		
-	res = SQLExecute(stmt);
+	
+	res = odbc_smart_execute(obj, stmt);
 
 	if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 		ast_log(LOG_WARNING, "SQL Execute error!\n[%s]\n\n", sql);
@@ -198,7 +198,7 @@
 		return NULL;
 	memset(&ra, 0, sizeof(ra));
 
-	obj = fetch_odbc_obj(database);
+	obj = fetch_odbc_obj(database, 0);
 	if (!obj)
 		return NULL;
 
@@ -242,7 +242,7 @@
 		SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(newval), 0, (void *)newval, 0, NULL);
 	}
 		
-	res = SQLExecute(stmt);
+	res = odbc_smart_execute(obj, stmt);
 
 	if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 		ast_log(LOG_WARNING, "SQL Execute error!\n[%s]\n\n", sql);
@@ -333,7 +333,7 @@
 	if (!table)
 		return -1;
 
-	obj = fetch_odbc_obj (database);
+	obj = fetch_odbc_obj (database, 0);
 	if (!obj)
 		return -1;
 
@@ -374,7 +374,7 @@
 		
 	SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(lookup), 0, (void *)lookup, 0, NULL);
 
-	res = SQLExecute(stmt);
+	res = odbc_smart_execute(obj, stmt);
 
 	if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 		ast_log(LOG_WARNING, "SQL Execute error!\n[%s]\n\n", sql);
@@ -411,7 +411,7 @@
 	if (!file || !strcmp (file, "res_config_odbc.conf"))
 		return NULL;		/* cant configure myself with myself ! */
 
-	obj = fetch_odbc_obj(database);
+	obj = fetch_odbc_obj(database, 0);
 	if (!obj)
 		return NULL;
 
@@ -425,10 +425,11 @@
 	SQLBindCol (stmt, 6, SQL_C_CHAR, &category, sizeof (category), &err);
 	SQLBindCol (stmt, 7, SQL_C_CHAR, &var_name, sizeof (var_name), &err);
 	SQLBindCol (stmt, 8, SQL_C_CHAR, &var_val, sizeof (var_val), &err);
-
+	
 	snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE filename='%s' and commented=0 ORDER BY filename,cat_metric desc,var_metric asc,category,var_name,var_val,id", table, file);
-	res = SQLExecDirect (stmt, sql, SQL_NTS);
 
+	res = odbc_smart_direct_execute(obj, stmt, sql);
+	
 	if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 		ast_log (LOG_WARNING, "SQL select error!\n[%s]\n\n", sql);
 		SQLFreeHandle (SQL_HANDLE_STMT, stmt);

Index: res_odbc.c
===================================================================
RCS file: /usr/cvsroot/asterisk/res/res_odbc.c,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -d -r1.11 -r1.12
--- res_odbc.c	25 Jan 2005 06:10:20 -0000	1.11
+++ res_odbc.c	17 Feb 2005 16:31:08 -0000	1.12
@@ -33,6 +33,7 @@
 
 static struct odbc_list ODBC_REGISTRY[MAX_ODBC_HANDLES];
 
+
 static void odbc_destroy(void)
 {
 	int x = 0;
@@ -56,7 +57,7 @@
 	return NULL;
 }
 
-static int odbc_write(struct odbc_list *registry, char *name, odbc_obj * obj)
+static int odbc_write(struct odbc_list *registry, char *name, odbc_obj *obj)
 {
 	int x = 0;
 	for (x = 0; x < MAX_ODBC_HANDLES; x++) {
@@ -81,6 +82,82 @@
 static char *tdesc = "ODBC Resource";
 /* internal stuff */
 
+int odbc_smart_execute(odbc_obj *obj, SQLHSTMT stmt) 
+{
+	int res = 0;
+	res = SQLExecute(stmt);
+	if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+		ast_log(LOG_WARNING, "SQL Execute error! Attempting a reconnect...\n");
+		ast_mutex_lock(&obj->lock);
+		obj->up = 0;
+		ast_mutex_unlock(&obj->lock);
+		odbc_obj_disconnect(obj);
+        odbc_obj_connect(obj);
+		res = SQLExecute(stmt);
+	}
+	
+	return res;
+}
+
+
+int odbc_smart_direct_execute(odbc_obj *obj, SQLHSTMT stmt, char *sql) 
+{
+	int res = 0;
+
+	res = SQLExecDirect (stmt, sql, SQL_NTS);
+	if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+		ast_log(LOG_WARNING, "SQL Execute error! Attempting a reconnect...\n");
+		ast_mutex_lock(&obj->lock);
+		obj->up = 0;
+		ast_mutex_unlock(&obj->lock);
+		odbc_obj_disconnect(obj);
+        odbc_obj_connect(obj);
+		res = SQLExecDirect (stmt, sql, SQL_NTS);
+	}
+	
+	return res;
+}
+
+int odbc_sanity_check(odbc_obj *obj) 
+{
+	char *test_sql = "select 1";
+	SQLHSTMT stmt;
+	int res = 0;
+	SQLLEN rowcount = 0;
+
+	ast_mutex_lock(&obj->lock);
+	if(obj->up) { /* so you say... let's make sure */
+		res = SQLAllocHandle (SQL_HANDLE_STMT, obj->con, &stmt);
+		if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+			obj->up = 0; /* Liar!*/
+		} else {
+			res = SQLPrepare(stmt, test_sql, SQL_NTS);
+			if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+				obj->up = 0; /* Liar!*/
+			} else {
+				res = SQLExecute(stmt);
+				if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+					obj->up = 0; /* Liar!*/
+				} else {
+					res = SQLRowCount(stmt, &rowcount);
+					if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+						obj->up = 0; /* Liar!*/
+					}
+				}
+			}
+		}
+		SQLFreeHandle (SQL_HANDLE_STMT, stmt);
+	}
+	ast_mutex_unlock(&obj->lock);
+
+	if(!obj->up) { /* Try to reconnect! */
+		ast_log(LOG_WARNING, "Connection is down attempting to reconnect...\n");
+		odbc_obj_disconnect(obj);
+		odbc_obj_connect(obj);
+	}
+	return obj->up;
+}
+
 static int load_odbc_config(void)
 {
 	static char *cfg = "res_odbc.conf";
@@ -145,9 +222,11 @@
 	return 0;
 }
 
-int odbc_dump_fd(int fd, odbc_obj * obj)
+int odbc_dump_fd(int fd, odbc_obj *obj)
 {
-	ast_cli(fd, "Name: %s\nDSN: %s\nConnected: %s\n", obj->name, obj->dsn, obj->up ? "yes" : "no");
+	/* make sure the connection is up before we lie to our master.*/
+	odbc_sanity_check(obj);
+	ast_cli(fd, "Name: %s\nDSN: %s\nConnected: %s\n\n", obj->name, obj->dsn, obj->up ? "yes" : "no");
 	return 0;
 }
 
@@ -244,16 +323,21 @@
 
 /* api calls */
 
-int register_odbc_obj(char *name, odbc_obj * obj)
+int register_odbc_obj(char *name, odbc_obj *obj)
 {
 	if (obj != NULL)
 		return odbc_write(ODBC_REGISTRY, name, obj);
 	return 0;
 }
 
-odbc_obj *fetch_odbc_obj(const char *name)
+odbc_obj *fetch_odbc_obj(const char *name, int check)
 {
-	return (odbc_obj *) odbc_read(ODBC_REGISTRY, name);
+	odbc_obj *obj = NULL;
+	if((obj = (odbc_obj *) odbc_read(ODBC_REGISTRY, name))) {
+		if(check)
+			odbc_sanity_check(obj);
+	}
+	return obj;
 }
 
 odbc_obj *new_odbc_obj(char *name, char *dsn, char *username, char *password)
@@ -295,7 +379,7 @@
 	return new;
 }
 
-void destroy_obdc_obj(odbc_obj ** obj)
+void destroy_obdc_obj(odbc_obj **obj)
 {
 	odbc_obj_disconnect(*obj);
 
@@ -311,32 +395,30 @@
 	if ((*obj)->password)
 		free((*obj)->password);
 	ast_mutex_unlock(&(*obj)->lock);
+	ast_mutex_destroy(&(*obj)->lock);
 	free(*obj);
 }
 
-odbc_status odbc_obj_disconnect(odbc_obj * obj)
+odbc_status odbc_obj_disconnect(odbc_obj *obj)
 {
 	int res;
 	ast_mutex_lock(&obj->lock);
 
-	if (obj->up) {
-		res = SQLDisconnect(obj->con);
-	} else {
-		res = -1;
-	}
+	res = SQLDisconnect(obj->con);
+
 
 	if (res == ODBC_SUCCESS) {
 		ast_log(LOG_WARNING, "res_odbc: disconnected %d from %s [%s]\n", res, obj->name, obj->dsn);
-		obj->up = 0;
 	} else {
 		ast_log(LOG_WARNING, "res_odbc: %s [%s] already disconnected\n",
 		obj->name, obj->dsn);
 	}
+	obj->up = 0;
 	ast_mutex_unlock(&obj->lock);
 	return ODBC_SUCCESS;
 }
 
-odbc_status odbc_obj_connect(odbc_obj * obj)
+odbc_status odbc_obj_connect(odbc_obj *obj)
 {
 	int res;
 	long int err;
@@ -378,8 +460,13 @@
 		}
 		SQLSetConnectAttr(obj->con, SQL_LOGIN_TIMEOUT, (SQLPOINTER *) 10, 0);
 	}
+	if(obj->up) {
+		odbc_obj_disconnect(obj);
+		ast_log(LOG_NOTICE,"Re-connecting %s\n", obj->name);
+	}
+
+	ast_log(LOG_NOTICE, "Connecting %s\n", obj->name);
 
-	ast_log(LOG_NOTICE, "Calling %p/%p\n", obj->username, obj->password);
 	res = SQLConnect(obj->con,
 		   (SQLCHAR *) obj->dsn, SQL_NTS,
 		   (SQLCHAR *) obj->username, SQL_NTS,




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