1 files changed, 67 insertions, 0 deletions
diff --git a/src/ruby/lib/grpc/auth/signet.rb b/src/ruby/lib/grpc/auth/signet.rb
new file mode 100644
index 0000000000..a8bce1255c
--- /dev/null
+++ b/src/ruby/lib/grpc/auth/signet.rb
@@ -0,0 +1,67 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+require 'signet/oauth_2/client'
+
+module Signet
+  # Signet::OAuth2 supports OAuth2 authentication.
+  module OAuth2
+    AUTH_METADATA_KEY = :Authorization
+    # Signet::OAuth2::Client creates an OAuth2 client
+    #
+    # Here client is re-opened to add the #apply and #apply! methods which
+    # update a hash map with the fetched authentication token
+    #
+    # Eventually, this change may be merged into signet itself, or some other
+    # package that provides Google-specific auth via signet, and this extension
+    # will be unnecessary.
+    class Client
+      # Updates a_hash updated with the authentication token
+      def apply!(a_hash, opts = {})
+        # fetch the access token there is currently not one, or if the client
+        # has expired
+        fetch_access_token!(opts) if access_token.nil? || expired?
+        a_hash[AUTH_METADATA_KEY] = "Bearer #{access_token}"
+      end
+
+      # Returns a clone of a_hash updated with the authentication token
+      def apply(a_hash, opts = {})
+        a_copy = a_hash.clone
+        apply!(a_copy, opts)
+        a_copy
+      end
+
+      # Returns a reference to the #apply method, suitable for passing as
+      # a closure
+      def updater_proc
+        lambda(&method(:apply))
+      end
+    end
+  end
+end