four new function, can merge it ?

[or0or1]

@hamishforbes

I has a fork and add the following four function.

The introduce is https://github.com/or0or1/lua-resty-consul/blob/master/README.md

Merge it or not ？ ths。

--return all keys whose value is not null
--add by or0or1
function _M.get_keys(self, key, opts)

local res, err = self:get(key, opts)
if not res then
    return nil, err
end

local keys={}
for _,entry in ipairs(res) do
  if type(entry.Value) ~= type(ngx.null) then
    table.insert(keys,entry.Key)
  end
end

if #keys == 0 then
  err="not key"
else
  err=""
end

return keys,err

end

--return all values, each value is not null
--add by or0or1
function _M.get_values(self, key, opts)

local res, err = self:get(key, opts)
if not res then
    return nil, err
end

local values={}
for _,entry in ipairs(res) do
  if type(entry.Value) ~= type(ngx.null) then
    local tkey=entry.Key
    values[tkey]=entry.Value
  end
end

if #values == 0 then
  err="not data"
else
  err=""
end

return values,err

end

--return all values, each value is not null( value need to be decoded)
--add by or0or1
function _M.get_values_decoded(self, key, opts)

local res, err = self:get(key, opts)
if not res then
    return nil, err
end

local values={}
for _,entry in ipairs(res) do
  if type(entry.Value) ~= type(ngx.null) then
    local tkey=entry.Key
    local decoded = ngx.decode_base64(entry.Value)
    if decoded ~= nil then
      values[tkey]=decoded
    end
  end
end

if #values == 0 then
  err="not data"
else
  err=""
end

return values,err

end

--return all values, each value is not null( value need to be decoded before deserialize)
--add by or0or1
function _M.get_values_json_decoded(self, key, opts)

local res, err = self:get(key, opts)
if not res then
    return nil, err
end

local values={}
for _,entry in ipairs(res) do
  if type(entry.Value) ~= type(ngx.null) then
    local tkey=entry.Key
    local decoded = ngx.decode_base64(entry.Value)
    if decoded ~= nil then
      local json_decoded = safe_json_decode(decoded)
      if json_decoded ~= nil then
        values[tkey]=json_decoded
      end
    end
  end
end

if #values == 0 then
  err="not data"
else
  err=""
end

return values,err

end

[hamishforbes]

Hey,

I feel like these are pretty niche features and don't really warrant having dedicated methods in this library.
They are probably more appropriate as utility functions in your application if you really need them that often.

[or0or1]

ok,ths