From db9e6688bd4c6aabc3415127536b967a4be64e45 Mon Sep 17 00:00:00 2001
From: smallfish <xiaoyu.chen@aliyun-inc.com>
Date: Sun, 21 Oct 2012 17:29:41 +0800
Subject: [PATCH 1/3] add resty.uuid module, use LuaJIT ffi wrapper libuuid.

---
 lib/resty/uuid.lua | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 lib/resty/uuid.lua

diff --git a/lib/resty/uuid.lua b/lib/resty/uuid.lua
new file mode 100644
index 0000000..c357654
--- /dev/null
+++ b/lib/resty/uuid.lua
@@ -0,0 +1,32 @@
+module("resty.uuid", package.seeall)
+
+_VERSION = '0.01'
+
+local ffi = require "ffi"
+local ffi_new = ffi.new
+local ffi_str = ffi.string
+local C = ffi.C
+
+ffi.cdef[[
+    typedef unsigned char uuid_t[16];
+    void uuid_generate(uuid_t out);
+    void uuid_unparse(const uuid_t uu, char *out);
+]]
+
+local libuuid = ffi.load("libuuid")
+
+function generate()
+    if libuuid then
+        local uuid   = ffi_new("uuid_t")
+        local result = ffi_new("char[36]")
+        libuuid.uuid_generate(uuid)
+        libuuid.uuid_unparse(uuid, result)
+        return ffi_str(result)
+    end
+end
+
+-- to prevent use of casual module global variables
+getmetatable(resty.uuid).__newindex = function (table, key, val)
+    error('attempt to write to undeclared variable "' .. key .. '": '
+            .. debug.traceback())
+end

From 5767001e6bfdf6d15401cf63ee90db65ca753602 Mon Sep 17 00:00:00 2001
From: smallfish <xiaoyu.chen@aliyun-inc.com>
Date: Sun, 21 Oct 2012 17:31:26 +0800
Subject: [PATCH 2/3] update README with uuid

---
 README.markdown | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.markdown b/README.markdown
index 6f7e6f6..9d3c281 100644
--- a/README.markdown
+++ b/README.markdown
@@ -148,6 +148,10 @@ Synopsis
         aes_256_cbc_sha512x5:decrypt(encrypted))
 
 
+    -- uuid test
+    local resty_uuid = require "resty.uuid"
+    local uuid = resty_uuid:generate()
+    ngx.say("UUID: ", uuid)
 
 Author
 ======

From 119b8a932ff67805c59954fe9767f050dc8c7e46 Mon Sep 17 00:00:00 2001
From: smallfish <xiaoyu.chen@aliyun-inc.com>
Date: Sun, 21 Oct 2012 17:40:31 +0800
Subject: [PATCH 3/3] remove uuid nouse vars

---
 lib/resty/uuid.lua | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/resty/uuid.lua b/lib/resty/uuid.lua
index c357654..a3de92b 100644
--- a/lib/resty/uuid.lua
+++ b/lib/resty/uuid.lua
@@ -5,7 +5,6 @@ _VERSION = '0.01'
 local ffi = require "ffi"
 local ffi_new = ffi.new
 local ffi_str = ffi.string
-local C = ffi.C
 
 ffi.cdef[[
     typedef unsigned char uuid_t[16];