Support for per-user API keys

app/models/api_key.rb

@@ -0,0 +1,22 @@
+class ApiKey < ActiveRecord::Base
+  belongs_to :user
+  belongs_to :created_by, class_name: User
+
+  validates_presence_of :key
+  validates_uniqueness_of :user_id
+
+  def regenerate!(updated_by)
+    self.key = SecureRandom.hex(32)
+    self.created_by = updated_by
+    save!
+  end
+
+  def self.create_master_key
+    api_key = ApiKey.where('user_id IS NULL').first
+    if api_key.blank?
+      api_key = ApiKey.create(key: SecureRandom.hex(32), created_by: Discourse.system_user)
+    end
+    api_key
+  end
+
+end