dynamic password provider

Author: davidsiaw

lib/mysql2/client.rb

@@ -79,7 +79,7 @@ def initialize(opts = {})
       end
 
       user     = opts[:username] || opts[:user]
-      pass     = opts[:password] || opts[:pass]
+      pass     = extract_password(opts)
       host     = opts[:host] || opts[:hostname]
       port     = opts[:port]
       database = opts[:database] || opts[:dbname] || opts[:db]
@@ -97,6 +97,14 @@ def initialize(opts = {})
       connect user, pass, host, port, database, socket, flags, conn_attrs
     end
 
+    def extract_password(opts)
+      return (opts[:password] || opts[:pass]) if !opts[:password_provider]
+      klass = Kernel.const_get(opts[:password_provider])
+
+      obj = klass.new(opts)
+      obj.password
+    end
+
     def parse_ssl_mode(mode)
       m = mode.to_s.upcase
       if m.start_with?('SSL_MODE_')