Utility methods for working with WSGI servers
Bases: object
Base WSGI application wrapper. Subclasses need to implement __call__.
Used for paste app factories in paste.deploy config fles.
Any local configuration (that is, values under the [app:APPNAME] section of the paste config) will be passed into the __init__ method as kwargs.
A hypothetical configuration would look like:
[app:wadl] latest_version = 1.3 paste.app_factory = nova.api.fancy_api:Wadl.factory
which would result in a call to the Wadl class as
import nova.api.fancy_api fancy_api.Wadl(latest_version=‘1.3’)
You could of course re-implement the factory method in subclasses, but using the kwarg passing it shouldn’t be necessary.
Bases: object
WSGI app that reads routing information supplied by RoutesMiddleware and calls the requested action method upon itself. All action methods must, in addition to their normal parameters, accept a ‘req’ argument which is the incoming wsgi.Request. They raise a webob.exc exception, or return a dict which will be serialized by requested content type.
Provide the XML namespace to use if none is otherwise specified.
Bases: nova.wsgi.Middleware
Helper class that can be inserted into any WSGI application chain to get information about the request and response.
Iterator that prints the contents of a wrapper string iterator when iterated.
Bases: nova.wsgi.Application
Base WSGI middleware.
These classes require an application to be initialized that will be called next. By default the middleware will simply call its wrapped app, or you can override __call__ to customize its behavior.
Used for paste app factories in paste.deploy config fles.
Any local configuration (that is, values under the [filter:APPNAME] section of the paste config) will be passed into the __init__ method as kwargs.
A hypothetical configuration would look like:
[filter:analytics] redis_host = 127.0.0.1 paste.filter_factory = nova.api.analytics:Analytics.factory
which would result in a call to the Analytics class as
import nova.api.analytics analytics.Analytics(app_from_paste, redis_host=‘127.0.0.1’)
You could of course re-implement the factory method in subclasses, but using the kwarg passing it shouldn’t be necessary.
Called on each request.
If this returns None, the next application down the stack will be executed. If it returns a response then that response will be returned and execution will stop here.
Do whatever you’d like to the response.
Bases: webob.request.Request
Determine the most acceptable content-type based on the query extension then the Accept header
Bases: object
WSGI middleware that maps incoming requests to WSGI apps.
Bases: object
Serializes and deserializes dictionaries to certain MIME types.
Deserialize a string to a dictionary.
The string must be in the format of a supported MIME type.
Serialize a dictionary into a string of the specified content type.
Bases: object
Server class to manage multiple WSGI sockets and applications.
Run a WSGI server with the given application.
Wait until all servers have completed running.
Bases: object
A thin wrapper that responds to write and logs.
Builds a wsgi app from a paste config, None if app not configured.
Returns a paste configuration dict, or None.
Find the best location in the system for a paste config file.
The search for a paste config file honors FLAGS.state_path, which in a version checked out from bzr will be the nova directory in the top level of the checkout, and in an installation for a package for your distribution will likely point to someplace like /etc/nova.
This method tries to load places likely to be used in development or experimentation before falling back to the system-wide configuration in /etc/nova/.