Add missing HTTP status codes (#1920)

* Add HTTP status code 422 (Unprocessable Entity)

* Add HTTP status code 424 (Failed Dependency)

* Add HTTP status code 507 (Insufficient Storage)

* Update contributors

* Update CHANGES.rst

CHANGES.rst

@@ -58,6 +58,9 @@ Changes
 - Use Forwarded, X-Forwarded-Scheme and X-Forwarded-Host for better scheme and
   host resolution. #1134
 
+- Extend list of web exceptions, add HTTPUnprocessableEntity,
+  HTTPFailedDependency, HTTPInsufficientStorage status codes #1920
+
 
 2.0.7 (2017-04-12)
 ------------------

CONTRIBUTORS.txt

@@ -149,6 +149,7 @@ Stanislas Plum
 Stanislav Prokop
 Stephen Granade
 Steven Seguin
+Sunghyun Hwang
 Sviatoslav Bulbakha
 Taha Jahangir
 Taras Voinarovskyi

aiohttp/web_exceptions.py

@@ -41,6 +41,8 @@
     'HTTPRequestRangeNotSatisfiable',
     'HTTPExpectationFailed',
     'HTTPMisdirectedRequest',
+    'HTTPUnprocessableEntity',
+    'HTTPFailedDependency',
     'HTTPUpgradeRequired',
     'HTTPPreconditionRequired',
     'HTTPTooManyRequests',
@@ -54,6 +56,7 @@
     'HTTPGatewayTimeout',
     'HTTPVersionNotSupported',
     'HTTPVariantAlsoNegotiates',
+    'HTTPInsufficientStorage',
     'HTTPNotExtended',
     'HTTPNetworkAuthenticationRequired',
 )
@@ -271,6 +274,14 @@ class HTTPMisdirectedRequest(HTTPClientError):
     status_code = 421
 
 
+class HTTPUnprocessableEntity(HTTPClientError):
+    status_code = 422
+
+
+class HTTPFailedDependency(HTTPClientError):
+    status_code = 424
+
+
 class HTTPUpgradeRequired(HTTPClientError):
     status_code = 426
 
@@ -342,6 +353,10 @@ class HTTPVariantAlsoNegotiates(HTTPServerError):
     status_code = 506
 
 
+class HTTPInsufficientStorage(HTTPServerError):
+    status_code = 507
+
+
 class HTTPNotExtended(HTTPServerError):
     status_code = 510
 

docs/web.rst

@@ -787,6 +787,8 @@ HTTP Exception hierarchy chart::
            * 416 - HTTPRequestRangeNotSatisfiable
            * 417 - HTTPExpectationFailed
            * 421 - HTTPMisdirectedRequest
+           * 422 - HTTPUnprocessableEntity
+           * 424 - HTTPFailedDependency
            * 426 - HTTPUpgradeRequired
            * 428 - HTTPPreconditionRequired
            * 429 - HTTPTooManyRequests
@@ -800,6 +802,7 @@ HTTP Exception hierarchy chart::
            * 504 - HTTPGatewayTimeout
            * 505 - HTTPVersionNotSupported
            * 506 - HTTPVariantAlsoNegotiates
+           * 507 - HTTPInsufficientStorage
            * 510 - HTTPNotExtended
            * 511 - HTTPNetworkAuthenticationRequired