X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Finclude%2Ffrontend%2Fconnection.h;h=98c41360a990ba11175f2a24150a922185769458;hb=740f1a8839faaf3033ea23f4cf2eea0dc0209d13;hp=803a195e45c31c2233e4348556368ea8b88538b3;hpb=af24300b64d721ec7e3be3edee1477d83b135f8b;p=sysdb.git

diff --git a/src/include/frontend/connection.h b/src/include/frontend/connection.h
index 803a195..98c4136 100644
--- a/src/include/frontend/connection.h
+++ b/src/include/frontend/connection.h
@@ -58,6 +58,12 @@ typedef struct {
 } sdb_conn_node_t;
 #define SDB_CONN_NODE(obj) ((sdb_conn_node_t *)(obj))
 
+/*
+ * sdb_conn_setup_cb is a callback function used to setup a connection. For
+ * example, it may be used to initialize session information.
+ */
+typedef int (*sdb_conn_setup_cb)(sdb_conn_t *, void *);
+
 /*
  * sdb_connection_enable_logging:
  * Enable logging of connection-related messages to the current client
@@ -75,14 +81,16 @@ sdb_connection_enable_logging(void);
 /*
  * sdb_connection_accpet:
  * Accept a new connection on the specified file-descriptor 'fd' and return a
- * newly allocated connection object.
+ * newly allocated connection object. If specified, the setup callback is used
+ * to setup the newly created connection. It will receive the connection
+ * object and the specified user data as its arguments.
  *
  * Returns:
  *  - 0 on success
  *  - a negative value else
  */
 sdb_conn_t *
-sdb_connection_accept(int fd);
+sdb_connection_accept(int fd, sdb_conn_setup_cb setup, void *user_data);
 
 /*
  * sdb_connection_close:
@@ -127,13 +135,23 @@ sdb_connection_send(sdb_conn_t *conn, uint32_t code,
 int
 sdb_connection_ping(sdb_conn_t *conn);
 
+/*
+ * sdb_connection_server_version:
+ * Send back the backend server version to the connected client.
+ *
+ * Returns:
+ *  - 0 on success
+ *  - a negative value else
+ */
+int
+sdb_connection_server_version(sdb_conn_t *conn);
+
 /*
  * sdb_fe_parse:
  * Parse the query text specified in 'query' of length 'len' and return a list
- * of parse trees (for each command) to be executed by sdb_fe_exec. The list
- * has to be freed by the caller. If 'len' is less than zero, parse the whole
- * (nul-terminated) string. If specified, errbuf will be used to record parse
- * errors.
+ * of parse trees (for each command). The list has to be freed by the caller.
+ * If 'len' is less than zero, parse the whole (nul-terminated) string. If
+ * specified, errbuf will be used to record parse errors.
  *
  * Returns:
  *  - an sdb_llist_t object of sdb_conn_node_t on success
@@ -142,17 +160,6 @@ sdb_connection_ping(sdb_conn_t *conn);
 sdb_llist_t *
 sdb_fe_parse(const char *query, int len, sdb_strbuf_t *errbuf);
 
-/*
- * sdb_fe_exec:
- * Execute the command identified by 'node' on the specified connection.
- *
- * Returns:
- *  - 0 on success
- *  - a negative value else
- */
-int
-sdb_fe_exec(sdb_conn_t *conn, sdb_conn_node_t *node);
-
 /*
  * session handling
  */