index 5748211f4c1d5c78f367eb1fc9672c825f757c2c..a2163bce9841d479557ad5f8c4f93bdf69ba4af5 100644 (file)
#ifndef SDB_FRONTEND_CONNECTION_H
#define SDB_FRONTEND_CONNECTION_H 1
+#include "frontend/proto.h"
#include "utils/strbuf.h"
#include <inttypes.h>
extern "C" {
#endif
-/* a generic connection object */
-typedef struct {
- /* file-descriptor of the open connection */
- int fd;
-
- /* read buffer */
- sdb_strbuf_t *buf;
-
- /* connection / protocol state information */
- uint32_t cmd;
- uint32_t cmd_len;
-} sdb_conn_t;
+typedef struct sdb_conn sdb_conn_t;
/*
- * sdb_connection_init:
- * Initialize an (already allocated) connection. This function allocates and
- * initialized any attributes. It's an error to call init on an already
- * initialized object.
+ * sdb_connection_accpet:
+ * Accept a new connection on the specified file-descriptor 'fd' and return a
+ * newly allocated connection object.
*
* Returns:
* - 0 on success
* - a negative value else
*/
-int
-sdb_connection_init(sdb_conn_t *conn);
+sdb_conn_t *
+sdb_connection_accept(int fd);
/*
* sdb_connection_close:
- * Close a open connection and deallocate any memory used by its attributes.
+ * Close a open connection and deallocate any memory. The connection object is
+ * no longer valid after calling this function.
*/
void
sdb_connection_close(sdb_conn_t *conn);
ssize_t
sdb_connection_read(sdb_conn_t *conn);
+/*
+ * sdb_connection_send:
+ * Send to an open connection.
+ *
+ * Returns:
+ * - the number of bytes written
+ * - a negative value on error
+ */
+ssize_t
+sdb_connection_send(sdb_conn_t *conn, uint32_t code,
+ uint32_t msg_len, const char *msg);
+
+/*
+ * sdb_connection_ping:
+ * Send back a backend status indicator to the connected client.
+ *
+ * Returns:
+ * - 0 on success
+ * - a negative value else
+ */
+int
+sdb_connection_ping(sdb_conn_t *conn);
+
+/*
+ * session handling
+ */
+
+/*
+ * sdb_fe_session_start:
+ * Start a new user session on the specified connection.
+ *
+ * Returns:
+ * - 0 on success
+ * - a negative value else
+ */
+int
+sdb_fe_session_start(sdb_conn_t *conn);
+
+/*
+ * store access
+ */
+
+/*
+ * sdb_fe_list:
+ * Send a complete listing of the store, serialized as JSON, to the client.
+ *
+ * Returns:
+ * - 0 on success
+ * - a negative value else
+ */
+int
+sdb_fe_list(sdb_conn_t *conn);
+
#ifdef __cplusplus
} /* extern "C" */
#endif