Enable timestamps to use alternative hours

lib/dynamics_crm.rb

@@ -1,4 +1,5 @@
 require "dynamics_crm/version"
+require "dynamics_crm/configuration"
 # CRM
 require "dynamics_crm/xml/message_builder"
 require 'dynamics_crm/xml/message_parser'

lib/dynamics_crm/configuration.rb

@@ -0,0 +1,33 @@
+# Class for setting configuration options in this engine. See e.g.
+# http://stackoverflow.com/questions/24104246/how-to-use-activesupportconfigurable-with-rails-engine
+#
+# To override default config values, for example in an initaliser, use e.g.:
+#
+#   DynamicsCRM.configure do |config|
+#    config.timestamps_use_utc_plus_hour = true
+#   end
+#
+# To access configuration settings use e.g.
+#   DynamicsCRM.config.timestamps_use_utc_minus_hour
+#
+module DynamicsCRM
+  class Configuration
+    include ActiveSupport::Configurable
+
+    # Set these to use a one hour difference, to the current system time in XML timestamps.
+    # Can help overcome local  timezone issues that result in errors such as :
+    #     s:Sender[a:InvalidSecurity] An error occurred when verifying security for the message.
+    #
+    config_accessor(:timestamps_use_utc_plus_hour)  { false }
+    config_accessor(:timestamps_use_utc_minus_hour) { false }
+
+  end
+
+  def self.config
+    @config ||= Configuration.new
+  end
+
+  def self.configure
+    yield config
+  end
+end

lib/dynamics_crm/xml/message_builder.rb

@@ -8,8 +8,18 @@ def uuid
 
       # have a bit of flexiblity in the create time to handle when system clocks are out of sync
       def get_current_time
-        # 5.minutes = 5 * 60
-        (Time.now - (5 * 60)).utc.strftime '%Y-%m-%dT%H:%M:%SZ'
+        if(DynamicsCRM.config.timestamps_use_utc_plus_hour)
+          get_current_time_plus_hour
+        elsif(DynamicsCRM.config.timestamps_use_utc_minus_hour)
+          get_current_time_minus_hour
+        else
+          # 5.minutes = 5 * 60
+          (Time.now - (5 * 60)).utc.strftime '%Y-%m-%dT%H:%M:%SZ'
+        end
+      end
+
+      def get_current_time_minus_hour
+        (Time.now.utc - (60*60)).strftime '%Y-%m-%dT%H:%M:%SZ'
       end
 
       def get_current_time_plus_hour