feat: add lua method for umd_log

Author: dfranusic

src/services/sysagent/umlua.c

@@ -79,6 +79,7 @@ int mink_lua_do_perf_set(lua_State *L);
 int mink_lua_do_perf_match(lua_State *L);
 int mink_lua_do_db_set(lua_State *L);
 int mink_lua_do_db_get(lua_State *L);
+int mink_lua_log(lua_State *L);
 
 // registered lua module methods
 static const struct luaL_Reg mink_lualib[] = {
@@ -90,6 +91,7 @@ static const struct luaL_Reg mink_lualib[] = {
     { "perf_match", &mink_lua_do_perf_match },
     { "db_set", &mink_lua_do_db_set },
     { "db_get", &mink_lua_do_db_get },
+    { "log", &mink_lua_log },
     { NULL, NULL }
 };
 

src/services/sysagent/umlua_m.c

@@ -715,3 +715,37 @@ mink_lua_do_db_get(lua_State *L)
     return 1;
 }
 
+/*******/
+/* log */
+/*******/
+int
+mink_lua_log(lua_State *L)
+{
+    // level, message
+    if (lua_gettop(L) < 2) {
+        return 0;
+    }
+
+    // string values required
+    if (!(lua_isstring(L, 1) && lua_isstring(L, 2))) {
+        return 0;
+    }
+
+    // get values
+    const char *l = lua_tostring(L, 1);
+    const char *m = lua_tostring(L, 2);
+
+    // default level
+    int i_l = UMD_LLT_INFO;
+
+    if (strcmp(l, "warn") == 0) {
+        i_l = UMD_LLT_WARNING;
+    } else if (strcmp(l, "error") == 0) {
+        i_l = UMD_LLT_ERROR;
+    }
+
+    umd_log(UMD, i_l, m);
+
+    return 0;
+
+}