improving error message in check-stale-results when api config is not present

Signed-off-by: Ben Abrams <[email protected]>

Author: majormoses

CHANGELOG.md

@@ -6,6 +6,10 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 ## [Unreleased]
 
+### Changed
+- check-stale-results.rb: improve error message when there is no api key in sensu settings (@majormoses)
+
+## [3.0.0] - 2018-05-17
 ### Breaking Change
 - bumped dependency of `sensu-plugin` to 2.x you can read about it [here](https://github.com/sensu-plugins/sensu-plugin/blob/master/CHANGELOG.md#v200---2017-03-29)
 

bin/check-stale-results.rb

@@ -69,7 +69,11 @@ def get_uri(path)
 
   def api_request(method, path)
     unless settings.key?('api')
-      raise 'api.json settings not found.'
+      raise <<EOF
+        sensu does not have an api config stanza set, please configure it in
+        either /etc/sensu/config.json or in any config that is loaded by sensu
+        such as /etc/sensu/conf.d/api.json
+      EOF
     end
     uri = get_uri(path)
     Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https') do |http|