Adding CORS

Change-Id: If898855d17d2cb33d0883c926c9f461b051e7d1c

Author: Jon Wayne Parrott

appengine/flexible/endpoints/main.py

@@ -23,6 +23,7 @@
 import logging
 
 from flask import Flask, jsonify, request, send_from_directory
+from flask_cors import cross_origin
 from six.moves import http_client
 import yaml
 
@@ -77,6 +78,7 @@ def auth_info_google_id_token():
 
 
 @app.route('/auth/info/firebase', methods=['GET'])
+@cross_origin(send_wildcard=True)
 def auth_info_firebase():
     """Auth info with Firebase auth."""
     return auth_info()

appengine/flexible/endpoints/main_test.py

@@ -82,3 +82,10 @@ def test_auth_info(client):
         assert r.status_code == 200
         data = json.loads(r.data.decode('utf-8'))
         assert data['id'] == '123'
+
+
+def test_cors(client):
+    r = client.options(
+        '/auth/info/firebase', headers={'Origin': 'example.com'})
+    assert r.status_code == 200
+    assert r.headers['Access-Control-Allow-Origin'] == '*'

appengine/flexible/endpoints/requirements.txt

@@ -1,4 +1,5 @@
 Flask==0.11.1
+flask-cors==2.1.2
 gunicorn==19.6.0
 gcloud==0.17.0
 six==1.10.0