Log errors with print outside of ngx_lua

hamishforbes · Jul 14, 2015 · f13fb3a · f13fb3a
1 parent bcf3559
commit f13fb3a
Showing 1 changed file with 14 additions and 6 deletions.
diff --git a/lib/resty/iputils.lua b/lib/resty/iputils.lua
@@ -1,4 +1,4 @@
-local ipairs, unpack, tonumber, tostring, type = ipairs, unpack, tonumber, tostring, type
+local ipairs, tonumber, tostring, type = ipairs, tonumber, tostring, type
 local bit = require("bit")
 local tobit = bit.tobit
 local lshift = bit.lshift
@@ -30,11 +30,21 @@ for i=1,32 do
  bin_inverted_masks[i] = xor(bin_masks[i], bin_masks["32"])
 end
 
+local log_err
+if ngx then
+ log_err = function(...)
+ ngx.log(ngx.ERR, ...)
+ end
+else
+ log_err = function(...)
+ print(...)
+ end
+end
+
 
 local function enable_lrucache(size)
- local resty_lrucache = require "resty.lrucache"
  local size = size or 4000 -- Cache the last 4000 IPs (~1MB memory) by default
- local lrucache_obj, err = resty_lrucache.new(4000)
+ local lrucache_obj, err = require("resty.lrucache").new(4000)
  if not lrucache_obj then
  return nil, "failed to create the cache: " .. (err or "unknown")
  end
@@ -148,9 +158,7 @@ local function parse_cidrs(cidrs)
  for _,cidr in ipairs(cidrs) do
  local lower, upper = parse_cidr(cidr)
  if not lower then
- if ngx then
- ngx.log(ngx.ERR, "Error parsing '", cidr, "': ", upper)
- end
+ log_err("Error parsing '", cidr, "': ", upper)
  else
  out[i] = {lower, upper}
  i = i+1