From 2929e986ef797541cd748748064f05bc87fc8d02 Mon Sep 17 00:00:00 2001
From: Shawn <506895667@qq.com>
Date: Wed, 21 Jun 2023 16:16:54 +0800
Subject: [PATCH] feat: add new sql-funcs random/0 and uuid_v4/0

---
 .../src/emqx_rule_engine.app.src              |  2 +-
 apps/emqx_rule_engine/src/emqx_rule_funcs.erl | 21 +++++++++++++++++++
 rebar.config                                  |  1 +
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/apps/emqx_rule_engine/src/emqx_rule_engine.app.src b/apps/emqx_rule_engine/src/emqx_rule_engine.app.src
index 84b1de762..e679244b2 100644
--- a/apps/emqx_rule_engine/src/emqx_rule_engine.app.src
+++ b/apps/emqx_rule_engine/src/emqx_rule_engine.app.src
@@ -3,7 +3,7 @@
   {vsn, "4.4.19"}, % strict semver, bump manually!
   {modules, []},
   {registered, [emqx_rule_engine_sup, emqx_rule_registry, emqx_rule_engine_jwt_sup]},
-  {applications, [kernel,stdlib,rulesql,getopt,jose]},
+  {applications, [kernel,stdlib,rulesql,getopt,jose,uuid]},
   {mod, {emqx_rule_engine_app, []}},
   {env, []},
   {licenses, ["Apache-2.0"]},
diff --git a/apps/emqx_rule_engine/src/emqx_rule_funcs.erl b/apps/emqx_rule_engine/src/emqx_rule_funcs.erl
index d308ff521..b71adef44 100644
--- a/apps/emqx_rule_engine/src/emqx_rule_funcs.erl
+++ b/apps/emqx_rule_engine/src/emqx_rule_funcs.erl
@@ -216,6 +216,12 @@
         , mongo_date/2
         ]).
 
+%% Random Funcs
+-export([ random/0
+        , uuid_v4/0
+        , uuid_v4_nodash/0
+        ]).
+
 %% Proc Dict Func
  -export([ proc_dict_get/1
          , proc_dict_put/2
@@ -887,6 +893,18 @@ term_encode(Term) ->
 term_decode(Data) when is_binary(Data) ->
     erlang:binary_to_term(Data).
 
+%%------------------------------------------------------------------------------
+%% Random Funcs
+%%------------------------------------------------------------------------------
+random() ->
+    rand:uniform().
+
+uuid_v4() ->
+    uuid_str(uuid:get_v4(), binary_standard).
+
+uuid_v4_nodash() ->
+    uuid_str(uuid:get_v4(), binary_nodash).
+
 %%------------------------------------------------------------------------------
 %% Dict Funcs
 %%------------------------------------------------------------------------------
@@ -1039,3 +1057,6 @@ function_literal(Fun, [FArg | Args]) when is_atom(Fun), is_list(Args) ->
     end, WithFirstArg, Args) ++ ")";
 function_literal(Fun, Args) ->
     {invalid_func, {Fun, Args}}.
+
+uuid_str(UUID, DisplyOpt) ->
+    uuid:uuid_to_string(UUID, DisplyOpt).
diff --git a/rebar.config b/rebar.config
index ac2894b57..74eaf5d09 100644
--- a/rebar.config
+++ b/rebar.config
@@ -67,6 +67,7 @@
     , {mysql, {git, "https://github.com/emqx/mysql-otp", {tag, "1.7.2"}}}
     , {epgsql, {git, "https://github.com/emqx/epgsql.git", {tag, "4.6.0"}}}
     , {grpc, {git, "https://github.com/emqx/grpc-erl", {tag, "0.6.7"}}}
+    , {uuid, {git, "https://github.com/okeuday/uuid.git", {tag, "v2.0.6"}}}
     ]}.
 
 {xref_ignores,