2 files changed, 29 insertions, 1 deletions
diff --git a/lib/gitlab/alert_management/alert_params.rb b/lib/gitlab/alert_management/alert_params.rb
index 982479784a9..789a4fe246a 100644
--- a/lib/gitlab/alert_management/alert_params.rb
+++ b/lib/gitlab/alert_management/alert_params.rb
@@ -20,7 +20,8 @@ module Gitlab
           hosts: Array(annotations[:hosts]),
           payload: payload,
           started_at: parsed_payload['startsAt'],
-          severity: annotations[:severity]
+          severity: annotations[:severity],
+          fingerprint: annotations[:fingerprint]
         }
       end
 
diff --git a/lib/gitlab/alert_management/fingerprint.rb b/lib/gitlab/alert_management/fingerprint.rb
new file mode 100644
index 00000000000..6ab47c88ca1
--- /dev/null
+++ b/lib/gitlab/alert_management/fingerprint.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module AlertManagement
+    class Fingerprint
+      def self.generate(data)
+        new.generate(data)
+      end
+
+      def generate(data)
+        return unless data.present?
+
+        if data.is_a?(Array)
+          data = flatten_array(data)
+        end
+
+        Digest::SHA1.hexdigest(data.to_s)
+      end
+
+      private
+
+      def flatten_array(array)
+        array.flatten.map!(&:to_s).join
+      end
+    end
+  end
+end