POST = function()

in kong/kong/plugins/acme/api.lua [54:110]
50 lines of code
13 McCabe index (conditional complexity)

    POST = function(self)
      local plugin, err = find_plugin()
      if err then
        return kong.response.exit(500, { message = err })
      elseif not plugin then
        return kong.response.exit(404)
      end
      local conf = plugin.config

      local host = self.params.host
      if not host or type(host) ~= "string" then
        return kong.response.exit(400, { message = "host must be provided and containing a single domain" })
      end

      
      if string.find(host, ":") ~= nil then
        return kong.response.exit(400, { message = "port is not allowed in host" })
      end

      
      if self.params.test_http_challenge_flow == true then
        local domains_matcher = handler.build_domain_matcher(conf.domains)
        if not domains_matcher or not domains_matcher[host] then
          return kong.response.exit(400, { message = "problem found running sanity check for " .. host ..
                ": host is not included in plugin config.domains"})
        end

        local check_path = string.format("http://%s/.well-known/acme-challenge/", host)
        local httpc = http.new()
        local res, err = httpc:request_uri(check_path .. "x")
        if not err then
          if ngx.re.match(res.body, "no Route matched with those values") then
            err = check_path .. "* doesn't map to a Route in Kong; " ..
                  "please refer to docs on how to create dummy Route and Service"
          elseif res.body ~= "Not found\n" then
            err = "unexpected response: \"" .. (res.body or "<nil>") .. "\""
            if res.status ~= 404 then
              err = err .. string.format(", unexpected status code: %d", res.status)
            end
          else
            return kong.response.exit(200, { message = "sanity test for host " .. host .. " passed"})
          end
        end
        return kong.response.exit(400, { message = "problem found running sanity check for " .. host .. ": " .. err})
      end

      local _, err = client.update_certificate(conf, host, nil)
      if err then
        return kong.response.exit(500, { message = "failed to update certificate: " .. err })
      end
      err = client.store_renew_config(conf, host)
      if err then
        return kong.response.exit(500, { message = "failed to store renew config: " .. err })
      end
      local msg = "certificate for host " .. host .. " is created"
      return kong.response.exit(201, { message = msg })
    end,