Record and show last used date of SSH Keys

Addresses: Issue #13810

1. Adds a last_used_at attribute to the Key table/model
2. Update a key's last_used_at whenever it gets used
3. Display how long ago an ssh key was last used

1 files changed, 9 insertions, 0 deletions

diff --git a/spec/models/key_spec.rb b/spec/models/key_spec.rb
index 7758b7ffa97..5eaddd822be 100644
--- a/spec/models/key_spec.rb
+++ b/spec/models/key_spec.rb
@@ -28,6 +28,15 @@ describe Key, models: true do
         expect(build(:key, user: user).publishable_key).to include("#{user.name} (#{Gitlab.config.gitlab.host})")
       end
     end
+
+    describe "#update_last_used_at" do
+      it "enqueues a UseKeyWorker job" do
+        key = create(:key)
+
+        expect(UseKeyWorker).to receive(:perform_async).with(key.id)
+        key.update_last_used_at
+      end
+    end
   end
 
   context "validation of uniqueness (based on fingerprint uniqueness)" do