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Description:

pecanmount 0.0.2

Pecan Mount===========A utility to mount Pecan applications at different points to act as one.Adding applications-------------------Pecan applications are usually mounted at `/` and they do not have an easy wayto be able to compound different apps working in unison. If you are using`pecan_mount` you need to use the tree as the actual WSGI application as itacts as WSGI middleware to properly return the apps at given mount points.You only need two things for mounting an app, an application configuration andthe mount point. The configuration can be either a path to a file ora dictionary (Pecan takes care of this loading for us). So to mount a singleapplication at `/application` with a configuration file living in`/path/to/config.py` it would look like this:: import pecan_mount pecan_mount.tree.mount('/application', '/path/to/config.py')The nice things about Pecan configuration is that it will take care of findingthe right modules and everything necessary for your application. At most, theimportant decision here is the mount point.Running multiple applications----------------------------Ideally, you would want to mount all the applications you need in one place,and this place should be where the WSGI application is constructed so that itcan be consumed by a WSGI server (for example `gunicorn` or Apache with`mod_wsgi`). This is how having 4 different applications would look in a filecalled `wsgi.py`:: import pecan_mount pecan_mount.tree.mount('/', '/path/to/main_config.py') pecan_mount.tree.mount('/admin', '/path/to/admin_config.py') pecan_mount.tree.mount('/registration', '/path/to/registration_config.py') pecan_mount.tree.mount('/_metrics', '/path/to/metrics_config.py') application = pecan_mount.tree Naming the mounts-----------------Optionally, when mounting, you can pass in a ``mount_name`` that will be usedadded to the WSGI app as an attribute. This is useful when debugging or whenyou need to have a better representation of what application is mounted at somepoint.If no ``mount_name`` is passed in to the ``mount`` callable, it will default toinferring the name from the ``script_name``, which in turn will use ``root``for empty strings or None and for dotted conversions for other paths.For example, a ``script_name`` that looks like: ``/foo/bar`` will be translatedto a ``mount_name`` of ``foo.bar``.Preventing overriding of mounts-------------------------------The ``tree`` object will prevent you from mounting applications in locationswhere there is already an app mounted. This is convenient when there aremultiple applications mounted and unknowingly a new app is using a locationalready taken. An ``AttributeError`` will be raised to indicate whatapplication at what mount point is being used and prevent further execution.Mounting other WSGI apps------------------------Other WSGI applications can also be mounted easily. The WSGI app will need tobe properly configured before mounting and will use a different callable:: import pecan_mount import my_app my_wsgi_app = my_app() pecan_mount.tree.graft(my_app, '/mount_point')