Save the node's UUID as an attributetm/chef_guid

We generate the UUID as part of the data collector report, but we didn't
make that available to the node or the chef server otherwise.

Signed-off-by: Thom May <thom@chef.io>

3 files changed, 25 insertions, 1 deletions

diff --git a/lib/chef/client.rb b/lib/chef/client.rb
index 6ff2d78ee6..3efaf6f4cf 100644
--- a/lib/chef/client.rb
+++ b/lib/chef/client.rb
@@ -256,6 +256,8 @@ class Chef
         enforce_path_sanity
         run_ohai
 
+        generate_guid
+
         register unless Chef::Config[:solo_legacy_mode]
         register_data_collector_reporter
 
@@ -994,6 +996,27 @@ class Chef
       Chef::ReservedNames::Win32::Security.has_admin_privileges?
     end
 
+    # Ensure that we have a GUID for this node
+    # If we've got the proper configuration, we'll simply set that.
+    # If we're registed with the data collector, we'll migrate that UUID into our configuration and use that
+    # Otherwise, we'll create a new GUID and save it
+    def generate_guid
+      Chef::Config[:chef_guid] ||=
+        if File.exists?(Chef::Config[:chef_guid_path])
+          File.read(Chef::Config[:chef_guid_path])
+        else
+          uuid = UUIDFetcher.node_uuid
+          File.open(Chef::Config[:chef_guid_path], "w+") do |fh|
+            fh.write(uuid)
+          end
+          uuid
+        end
+    end
+
+    class UUIDFetcher
+      extend Chef::DataCollector::Messages::Helpers
+    end
+
     # Register the data collector reporter to send event information to the
     # data collector server
     def register_data_collector_reporter
diff --git a/lib/chef/data_collector/messages/helpers.rb b/lib/chef/data_collector/messages/helpers.rb
index e451db2c63..e4eda5ebb2 100644
--- a/lib/chef/data_collector/messages/helpers.rb
+++ b/lib/chef/data_collector/messages/helpers.rb
@@ -106,7 +106,7 @@ class Chef
         # @return [String] UUID for the node
         #
         def node_uuid
-          read_node_uuid || generate_node_uuid
+          Chef::Config[:chef_guid] || read_node_uuid || generate_node_uuid
         end
 
         #
diff --git a/lib/chef/node.rb b/lib/chef/node.rb
index 496bfedc15..977c2d5e92 100644
--- a/lib/chef/node.rb
+++ b/lib/chef/node.rb
@@ -330,6 +330,7 @@ class Chef
       Chef::Log.debug("Platform is #{platform} version #{version}")
       automatic[:platform] = platform
       automatic[:platform_version] = version
+      automatic[:chef_guid] = Chef::Config[:chef_guid]
       automatic[:name] = name
       automatic[:chef_environment] = chef_environment
     end