Changed dispatch middleware to check against known Flask paths

Unfortunately we need to check the path for the request against a known
list of partial paths that Flask knows about - and then we route those
requests to Flask.

ckan/ckan_app.py

@@ -32,7 +32,7 @@ def create_app():
     ##############################################################################
     # Set up routes
     ##############################################################################
-    app.add_url_rule('/action/<func_name>', view_func=ApiView.as_view('api'))
+    app.add_url_rule('/api/3/action/<func_name>', view_func=ApiView.as_view('api'))
 
     return app
 

ckan/config/middleware.py

@@ -180,15 +180,35 @@ def make_app(conf, full_stack=True, static_files=True, **app_conf):
     from werkzeug.wsgi import DispatcherMiddleware
     from ckan_app import create_app
 
-    app = DispatcherMiddleware(app, {
-        '/api/4': create_app()
-    })
-    #from ckan_app import create_app
-    #app = PathDispatcher(app, create_app)
 
+    app = FlaskDispatcher(app, create_app)
     return app
 
 
+class FlaskDispatcher(object):
+    """
+    Dispatches requests either to the CKAN Pylons app, or
+    if the request path starts with one known by Flask, the
+    Flask app.
+    """
+
+    FLASK_PATHS = (
+        "/api/3",
+    )
+
+    def __init__(self, default_app, create_app):
+        self.default_app = default_app
+        self.create_app = create_app
+
+    def __call__(self, environ, start_response):
+        path = environ["PATH_INFO"]
+        if path.startswith(FlaskDispatcher.FLASK_PATHS):
+            return self.create_app()(environ, start_response)
+
+        return self.default_app(environ, start_response)
+
+
+
 class I18nMiddleware(object):
     """I18n Middleware selects the language based on the url
     eg /fr/home is French"""