MINOR: lua: Variable access
This patch adds two Lua function for using HAPRoxy's
vraibles. The function are stored in the TXN class,
and her name is "set_var" and "get_var".
diff --git a/doc/lua-api/index.rst b/doc/lua-api/index.rst
index 3c72018..26641ba 100644
--- a/doc/lua-api/index.rst
+++ b/doc/lua-api/index.rst
@@ -888,6 +888,21 @@
:param class_txn txn: The class txn object containing the data.
:param opaque data: The data which is stored in the transaction.
+.. js:function:: TXN.set_var(TXN, var, value)
+
+ Converts an Lua type in a HAProxy type and store it in a variable <var>.
+
+ :param class_txn txn: The class txn object containing the data.
+ :param string var: The variable name according with the HAProxy variable syntax.
+ :param opaque value: The data which is stored in the variable.
+
+.. js:function:: TXN.get_var(TXN, var)
+
+ Returns data stored in the variable <var> converter in Lua type.
+
+ :param class_txn txn: The class txn object containing the data.
+ :param string var: The variable name according with the HAProxy variable syntax.
+
.. js:function:: TXN.get_headers(txn)
This function returns an array of headers.
diff --git a/src/hlua.c b/src/hlua.c
index 7919ce0..320e729 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -38,6 +38,7 @@
#include <proto/ssl_sock.h>
#include <proto/stream_interface.h>
#include <proto/task.h>
+#include <proto/vars.h>
/* Lua uses longjmp to perform yield or throwing errors. This
* macro is used only for identifying the function that can
@@ -3322,6 +3323,52 @@
return (struct hlua_txn *)MAY_LJMP(hlua_checkudata(L, ud, class_txn_ref));
}
+__LJMP static int hlua_set_var(lua_State *L)
+{
+ struct hlua_txn *htxn;
+ const char *name;
+ size_t len;
+ struct sample smp;
+
+ MAY_LJMP(check_args(L, 3, "set_var"));
+
+ /* It is useles to retrieve the stream, but this function
+ * runs only in a stream context.
+ */
+ htxn = MAY_LJMP(hlua_checktxn(L, 1));
+ name = MAY_LJMP(luaL_checklstring(L, 2, &len));
+
+ /* Converts the third argument in a sample. */
+ hlua_lua2smp(L, 3, &smp);
+
+ /* Store the sample in a variable. */
+ vars_set_by_name(name, len, htxn->s, &smp);
+ return 0;
+}
+
+__LJMP static int hlua_get_var(lua_State *L)
+{
+ struct hlua_txn *htxn;
+ const char *name;
+ size_t len;
+ struct sample smp;
+
+ MAY_LJMP(check_args(L, 2, "get_var"));
+
+ /* It is useles to retrieve the stream, but this function
+ * runs only in a stream context.
+ */
+ htxn = MAY_LJMP(hlua_checktxn(L, 1));
+ name = MAY_LJMP(luaL_checklstring(L, 2, &len));
+
+ if (!vars_get_by_name(name, len, htxn->s, &smp)) {
+ lua_pushnil(L);
+ return 1;
+ }
+
+ return hlua_smp2lua(L, &smp);
+}
+
__LJMP static int hlua_set_priv(lua_State *L)
{
struct hlua *hlua;
@@ -4948,6 +4995,8 @@
/* Register Lua functions. */
hlua_class_function(gL.T, "set_priv", hlua_set_priv);
hlua_class_function(gL.T, "get_priv", hlua_get_priv);
+ hlua_class_function(gL.T, "set_var", hlua_set_var);
+ hlua_class_function(gL.T, "get_var", hlua_get_var);
hlua_class_function(gL.T, "close", hlua_txn_close);
hlua_class_function(gL.T, "set_loglevel",hlua_txn_set_loglevel);
hlua_class_function(gL.T, "set_tos", hlua_txn_set_tos);