GoogleCloudPlatform · theacodes · Oct 22, 2015 · Oct 21, 2015 · waprin · Oct 21, 2015
diff --git a/appengine/mailgun/.gitignore b/appengine/mailgun/.gitignore
@@ -0,0 +1 @@
+lib
diff --git a/appengine/mailgun/README.md b/appengine/mailgun/README.md
diff --git a/appengine/mailgun/__init__.py b/appengine/mailgun/__init__.py
diff --git a/appengine/mailgun/app.yaml b/appengine/mailgun/app.yaml
@@ -0,0 +1,7 @@
+runtime: python27
+threadsafe: yes
+api_version: 1
+
+handlers:
+- url: .*
+  script: main.app
diff --git a/appengine/mailgun/appengine_config.py b/appengine/mailgun/appengine_config.py
@@ -0,0 +1,18 @@
+# Copyright 2015 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from google.appengine.ext import vendor
+
+# Add any libraries installed in the "lib" folder.
+vendor.add('lib')
diff --git a/appengine/mailgun/main.py b/appengine/mailgun/main.py
@@ -0,0 +1,103 @@
+#!/usr/bin/env python
+
+# Copyright 2015 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Sample Google App Engine application that sends mail using Mailgun.
+"""
+from urllib import urlencode
+
+import httplib2
+import webapp2
+
+
+# Your Mailgun Domain Name
+MAILGUN_DOMAIN_NAME = 'your-mailgun-domain-name'
+# Your Mailgun API key
+MAILGUN_API_KEY = 'your-mailgun-api-key'
+
+
+# [START simple_message]
+def send_simple_message(recipient):
+    http = httplib2.Http()
+    http.add_credentials('api', MAILGUN_API_KEY)
+
+    url = 'https://api.mailgun.net/v3/{}/messages'.format(MAILGUN_DOMAIN_NAME)
+    data = {
+        'from': 'Example Sender <mailgun@{}>'.format(MAILGUN_DOMAIN_NAME),
+        'to': recipient,
+        'subject': 'This is an example email from Mailgun',
+        'text': 'Test message from Mailgun'
+    }
+
+    resp, content = http.request(url, 'POST', urlencode(data))
+
+    if resp.status != 200:
+        raise RuntimeError(
+            'Mailgun API error: {} {}'.format(resp.status, content))
+# [END simple_message]
+
+
+# [START complex_message]
+def send_complex_message(recipient):
+    http = httplib2.Http()
+    http.add_credentials('api', MAILGUN_API_KEY)
+
+    url = 'https://api.mailgun.net/v3/{}/messages'.format(MAILGUN_DOMAIN_NAME)
+    data = {
+        'from': 'Example Sender <mailgun@{}>'.format(MAILGUN_DOMAIN_NAME),
+        'to': recipient,
+        'subject': 'This is an example email from Mailgun',
+        'text': 'Test message from Mailgun',
+        'html': '<html>HTML <strong>version</strong> of the body</html>'
+    }
+
+    resp, content = http.request(url, 'POST', urlencode(data))
+
+    if resp.status != 200:
+        raise RuntimeError(
+            'Mailgun API error: {} {}'.format(resp.status, content))
+# [END complex_message]
+
+
+class MainPage(webapp2.RequestHandler):
+    def get(self):
+        self.response.content_type = 'text/html'
+        self.response.write("""
+<!doctype html>
+<html><body>
+<form method="POST">
+<input type="text" name="recipient" placeholder="Enter recipient email">
+<input type="submit" name="submit" value="Send simple email">
+<input type="submit" name="submit" value="Send complex email">
+</form>
+</body></html>
+""")
+
+    def post(self):
+        recipient = self.request.get('recipient')
+        action = self.request.get('submit')
+
+        if action == 'Send simple email':
+            send_simple_message(recipient)
+        else:
+            send_complex_message(recipient)
+
+        self.response.write('Mail sent')
+
+
+app = webapp2.WSGIApplication([
+    ('/', MainPage)
+], debug=True)
diff --git a/appengine/mailgun/main_test.py b/appengine/mailgun/main_test.py
@@ -0,0 +1,55 @@
+# Copyright 2015 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from tests import AppEngineTestbedCase, Http2Mock
+import webtest
+
+from . import main
+
+
+class TestMailgunHandlers(AppEngineTestbedCase):
+    def setUp(self):
+        super(TestMailgunHandlers, self).setUp()
+
+        self.app = webtest.TestApp(main.app)
+
+    def test_get(self):
+        response = self.app.get('/')
+        self.assertEqual(response.status_int, 200)
+
+    def test_post(self):
+        http = Http2Mock(responses=[{}])
+
+        with http:
+            response = self.app.post('/', {
+                'recipient': '[email protected]',
+                'submit': 'Send simple email'})
+
+            self.assertEqual(response.status_int, 200)
+
+        http = Http2Mock(responses=[{}])
+
+        with http:
+            response = self.app.post('/', {
+                'recipient': '[email protected]',
+                'submit': 'Send complex email'})
+
+            self.assertEqual(response.status_int, 200)
+
+        http = Http2Mock(responses=[{'status': 500, 'body': 'Test error'}])
+
+        with http, self.assertRaises(Exception):
+            self.app.post('/', {
+                'recipient': '[email protected]',
+                'submit': 'Send simple email'})
diff --git a/appengine/mailgun/requirements.txt b/appengine/mailgun/requirements.txt
@@ -0,0 +1 @@
+httplib2
diff --git a/tests/__init__.py b/tests/__init__.py
@@ -16,12 +16,14 @@
     AppEngineTestbedCase,
     capture_stdout,
     CloudBaseTest,
+    Http2Mock,
     RESOURCE_PATH)
 
 
 __all__ = [
     'AppEngineTestbedCase',
     'capture_stdout',
     'CloudBaseTest',
+    'Http2Mock',
     'RESOURCE_PATH'
 ]
diff --git a/tests/utils.py b/tests/utils.py
@@ -21,6 +21,7 @@
 import tempfile
 import unittest
 
+import httplib2
 from nose.plugins.skip import SkipTest
 from six.moves import cStringIO
 
@@ -135,3 +136,31 @@ def capture_stdout():
         yield fake_stdout
     finally:
         sys.stdout = old_stdout
+
+
+class Http2Mock(object):
+    """Mock httplib2.Http"""
+
+    def __init__(self, responses):
+        self.responses = responses
+
+    def add_credentials(self, user, pwd):
+        self.credentials = (user, pwd)
+
+    def request(self, token_uri, method, body, headers=None, *args, **kwargs):
+        response = self.responses.pop(0)
+        self.status = response.get('status', 200)
+        self.body = response.get('body', '')
+        self.headers = response.get('headers', '')
+        return (self, self.body)
+
+    def __enter__(self):
+        self.httplib2_orig = httplib2.Http
+        httplib2.Http = self
+        return self
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        httplib2.Http = self.httplib2_orig
+
+    def __call__(self, *args, **kwargs):
+        return self