locker

locker/redis/redis_locker.lua

@@ -0,0 +1,33 @@
+#!lua name=charlie_locker
+
+-- 安装命令
+-- cat redis_locker.lua | redis-cli -x --cluster-only-masters --cluster call 192.168.123.30:6379 FUNCTION LOAD REPLACE
+
+local function lock(keys, args) 
+    if redis.call("GET", keys[1]) == args[1] then
+        redis.call("SET", keys[1], args[1], "PX", args[2])
+        return "OK"
+    else
+        return redis.call("SET", keys[1], args[1], "NX", "PX", args[2])
+    end
+end
+
+local function del(keys, args)
+    if redis.call("GET", keys[1]) == args[1] then
+        return redis.call("DEL", keys[1])
+    else
+        return '0'
+    end
+end
+
+local function expire(keys, args)
+    if redis.call('get', keys[1]) == args[1] then
+        return redis.call('expire', keys[1], args[2])
+    else
+        return '0'
+    end
+end
+
+redis.register_function('locker_lock',lock)
+redis.register_function('locker_unlock',del)
+redis.register_function('locker_expire',expire)