How do you throw an HTTP error with mod_python
I have a setup where I'm servi开发者_运维百科ng simple python pages using the mod_python publisher. At some points I'd like to have the python function raise a standard apache error - for example throwing a 500 error if a required file is missing. How can I throw an apache error from within a mod_python script?
I am not a python expert but from this documentation, it would appear that you can do:
raise apache.SERVER_RETURN, apache.HTTP_INTERNAL_SERVER_ERROR
Here is a quote of the documentation in case of link rot:
A handler function will always be passed a reference to a request object. (Throughout this manual, the request object is often referred to by the req variable.)
Every handler can return:
apache.OK, meaning this phase of the request was handled by this handler and no errors occurred.
apache.DECLINED, meaning this handler has not handled this phase of the request to completion and Apache needs to look for another handler in subsequent modules.
apache.HTTP_ERROR, meaning an HTTP error occurred. HTTP_ERROR can be any of the following:
HTTP_CONTINUE = 100 HTTP_SWITCHING_PROTOCOLS = 101 HTTP_PROCESSING = 102 HTTP_OK = 200 HTTP_CREATED = 201 HTTP_ACCEPTED = 202 HTTP_NON_AUTHORITATIVE = 203 HTTP_NO_CONTENT = 204 HTTP_RESET_CONTENT = 205 HTTP_PARTIAL_CONTENT = 206 HTTP_MULTI_STATUS = 207 HTTP_MULTIPLE_CHOICES = 300 HTTP_MOVED_PERMANENTLY = 301 HTTP_MOVED_TEMPORARILY = 302 HTTP_SEE_OTHER = 303 HTTP_NOT_MODIFIED = 304 HTTP_USE_PROXY = 305 HTTP_TEMPORARY_REDIRECT = 307 HTTP_BAD_REQUEST = 400 HTTP_UNAUTHORIZED = 401 HTTP_PAYMENT_REQUIRED = 402 HTTP_FORBIDDEN = 403 HTTP_NOT_FOUND = 404 HTTP_METHOD_NOT_ALLOWED = 405 HTTP_NOT_ACCEPTABLE = 406 HTTP_PROXY_AUTHENTICATION_REQUIRED= 407 HTTP_REQUEST_TIME_OUT = 408 HTTP_CONFLICT = 409 HTTP_GONE = 410 HTTP_LENGTH_REQUIRED = 411 HTTP_PRECONDITION_FAILED = 412 HTTP_REQUEST_ENTITY_TOO_LARGE = 413 HTTP_REQUEST_URI_TOO_LARGE = 414 HTTP_UNSUPPORTED_MEDIA_TYPE = 415 HTTP_RANGE_NOT_SATISFIABLE = 416 HTTP_EXPECTATION_FAILED = 417 HTTP_UNPROCESSABLE_ENTITY = 422 HTTP_LOCKED = 423 HTTP_FAILED_DEPENDENCY = 424 HTTP_INTERNAL_SERVER_ERROR = 500 HTTP_NOT_IMPLEMENTED = 501 HTTP_BAD_GATEWAY = 502 HTTP_SERVICE_UNAVAILABLE = 503 HTTP_GATEWAY_TIME_OUT = 504 HTTP_VERSION_NOT_SUPPORTED = 505 HTTP_VARIANT_ALSO_VARIES = 506 HTTP_INSUFFICIENT_STORAGE = 507 HTTP_NOT_EXTENDED = 510
As an alternative to returning an HTTP error code, handlers can signal an error by raising the apache.SERVER_RETURN exception, and providing an HTTP error code as the exception value, e.g.:
raise apache.SERVER_RETURN, apache.HTTP_FORBIDDEN
I believe it's:
def my_action(req):
# all the status code constants are defined in the apache module
req.status = apache.HTTP_INTERNAL_SERVER_ERROR
req.content_type = some_mime_type
req.write(content)
raise apache.HTTP_SERVER_RETURN, apache.DONE
raising apache.DONE tells Apache not to write out its own error page.
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