Show release information for Poseidon

lib/runner/strategy/poseidon.rb

@@ -152,7 +152,24 @@ class Runner::Strategy::Poseidon < Runner::Strategy
   end
 
   def self.release
-    nil
+    url = "#{config[:url]}/version"
+    Rails.logger.debug { "#{Time.zone.now.getutc.inspect}: Getting release from #{url}" }
+    response = http_connection.get url
+    case response.status
+      when 200
+        JSON.parse(response.body)
+      when 404
+        'N/A'
+      else
+        handle_error response
+    end
+  rescue Faraday::Error => e
+    raise Runner::Error::FaradayError.new("Request to Poseidon failed: #{e.inspect}")
+  rescue JSON::ParserError => e
+    # Poseidon should not send invalid json
+    raise Runner::Error::UnexpectedResponse.new("Error parsing response from Poseidon: #{e.message}")
+  ensure
+    Rails.logger.debug { "#{Time.zone.now.getutc.inspect}: Finished getting release information" }
   end
 
   def self.pool_size