[script] try redis commands via our connector

script/redis

@@ -0,0 +1,3 @@
+#!/usr/bin/env sh
+
+exec resty -I apicast/src script/redis.lua "$@"

script/redis.lua

@@ -0,0 +1,35 @@
+#!/usr/bin/env resty -I apicast/src
+
+local cmd = arg[1]
+local args = {}
+
+for i=2, #arg do
+  table.insert(args, arg[i])
+end
+
+if not cmd then
+  print('missing command')
+  print('usage: ' .. arg[0] .. ' cmd [arg [arg ...]]')
+  os.exit(1)
+end
+
+local inspect = require 'inspect'
+local ts = require 'threescale_utils'
+
+local red, err = ts.connect_redis()
+
+if not red and err then
+  print('could not connect to redis: ', err)
+  os.exit(1)
+end
+
+local fn = red[cmd]
+local res, err = fn(red, unpack(args))
+
+if err then
+  print('error: ', err)
+  print(inspect(r))
+  os.exit(1)
+end
+
+print(inspect(res))