Merge pull request #2 from tatwell/hbyjknty-arrow-api

As a user, I want an arrow API so that I can verify that the arrow library works on Google App Engine.

app-engine/app.yaml

@@ -4,7 +4,7 @@
 # for details.
 
 # default: production
-version: dev
+version: hbyjknty
 
 application: tatwell-python-demo
 runtime: python27

app-engine/main.py

@@ -2,8 +2,10 @@
 # Imports
 #
 from os.path import dirname, join
+import arrow
+import dateutil
 
-from flask import Flask, render_template
+from flask import Flask, render_template, jsonify
 
 
 #
@@ -27,6 +29,35 @@ def main_index():
     """Home page."""
     return render_template('index.html')
 
+# Arrow API
+# Mainly to test fix for this issue:
+#
+@app.route('/arrow/version')
+def arrow_version():
+    return jsonify({
+        'arrow': arrow.VERSION,
+        'dateutil': dateutil.__version__
+    })
+
+@app.route('/arrow/now')
+@app.route('/arrow/now/<timezone>')
+def arrow_now(timezone=None):
+    now = arrow.utcnow()
+    json_data = {
+        'now': str(now),
+        'timezone': 'UTC'
+    }
+
+    if timezone:
+        timezone = timezone.replace('-', '/')
+        json_data['timezone'] = timezone
+        try:
+            json_data['now'] = str(now.to(timezone))
+        except arrow.parser.ParserError, e:
+            json_data['now'] = None
+            json_data['error'] = str(e)
+
+    return jsonify(json_data)
 
 #
 # Exception Handlers

app-engine/requirements.txt

@@ -5,3 +5,9 @@
 #
 # Note: The `lib` directory is added to `sys.path` by `appengine_config.py`.
 Flask==0.10
+
+# Arrow requires dateutil and dateutil > 1.5 requires subprocess module which App Engine
+# does not allow. So we peg dateutil here to 1.5.
+# See https://github.com/crsmithdev/arrow/issues/240
+arrow
+python-dateutil==1.5