Added several HTTP error exceptions

Author: ElSaico

Diff for: restless/constants.py

@@ -6,8 +6,22 @@
 
 BAD_REQUEST = 400
 UNAUTHORIZED = 401
+FORBIDDEN = 403
 NOT_FOUND = 404
 METHOD_NOT_ALLOWED = 405
+NOT_ACCEPTABLE = 406
+CONFLICT = 409
+GONE = 410
+PRECONDITION_FAILED = 412
+UNSUPPORTED_MEDIA_TYPE = 415
+EXPECTATION_FAILED = 417
+I_AM_A_TEAPOT = 418
+UNPROCESSABLE_ENTITY = 422
+LOCKED = 423
+FAILED_DEPENDENCY = 424
+TOO_MANY_REQUESTS = 429
+UNAVAILABLE_FOR_LEGAL_REASONS = 451
 
 APPLICATION_ERROR = 500
 METHOD_NOT_IMPLEMENTED = 501
+UNAVAILABLE = 503

Diff for: restless/exceptions.py

@@ -1,5 +1,10 @@
-from .constants import APPLICATION_ERROR, UNAUTHORIZED, NOT_FOUND, BAD_REQUEST
-from .constants import METHOD_NOT_ALLOWED, METHOD_NOT_IMPLEMENTED
+from .constants import (APPLICATION_ERROR, UNAUTHORIZED, NOT_FOUND, BAD_REQUEST,
+                        FORBIDDEN, NOT_ACCEPTABLE, GONE, PRECONDITION_FAILED,
+                        CONFLICT, UNSUPPORTED_MEDIA_TYPE, EXPECTATION_FAILED,
+                        I_AM_A_TEAPOT, TOO_MANY_REQUESTS, UNPROCESSABLE_ENTITY,
+                        UNAVAILABLE_FOR_LEGAL_REASONS, FAILED_DEPENDENCY,
+                        LOCKED)
+from .constants import METHOD_NOT_ALLOWED, METHOD_NOT_IMPLEMENTED, UNAVAILABLE
 
 
 class RestlessError(Exception):
@@ -44,6 +49,11 @@ class Unauthorized(HttpError):
     msg = "Unauthorized."
 
 
+class Forbidden(HttpError):
+    status = FORBIDDEN
+    msg = "Permission denied."
+
+
 class NotFound(HttpError):
     status = NOT_FOUND
     msg = "Resource not found."
@@ -54,6 +64,72 @@ class MethodNotAllowed(HttpError):
     msg = "The specified HTTP method is not allowed."
 
 
+class NotAcceptable(HttpError):
+    # TODO: make serializers handle it?
+    status = NOT_ACCEPTABLE
+    msg = "Unable to send content specified on the request's Accept header(s)."
+
+
+class Conflict(HttpError):
+    status = CONFLICT
+    msg = "There was a conflict when processing the request."
+
+
+class Gone(HttpError):
+    status = GONE
+    msg = "Resource removed permanently."
+
+
+class PreconditionFailed(HttpError):
+    status = PRECONDITION_FAILED
+    msg = "Unable to satisfy one or more request preconditions."
+
+
+class UnsupportedMediaType(HttpError):
+    status = UNSUPPORTED_MEDIA_TYPE
+    msg = "Type of media provided on request is not supported."
+
+
+class ExpectationFailed(HttpError):
+    status = EXPECTATION_FAILED
+    msg = "Unable to satisfy requirements of Expect header."
+
+
+class IAmATeapot(HttpError):
+    status = I_AM_A_TEAPOT
+    msg = "This is a teapot; do not attempt to brew coffee with it."
+
+
+class UnprocessableEntity(HttpError):
+    status = UNPROCESSABLE_ENTITY
+    msg = "Request cannot be followed due to a semantic error."
+
+
+class Locked(HttpError):
+    status = LOCKED
+    msg = "Resource is locked."
+
+
+class FailedDependency(HttpError):
+    status = FAILED_DEPENDENCY
+    msg = "Request failed due to a previous failed request."
+
+
+class TooManyRequests(HttpError):
+    status = TOO_MANY_REQUESTS
+    msg = "There was a conflict when processing the request."
+
+
+class UnavailableForLegalReasons(HttpError):
+    status = UNAVAILABLE_FOR_LEGAL_REASONS
+    msg = "Resource made unavailable by a legal decision."
+
+
 class MethodNotImplemented(HttpError):
     status = METHOD_NOT_IMPLEMENTED
     msg = "The specified HTTP method is not implemented."
+
+
+class Unavailable(HttpError):
+    status = UNAVAILABLE
+    msg = "There was a conflict when processing the request."