Aaron Lehmann 6beeb935cd Avoid stat round-trips when fetching a blob ... Without this commit, three round-trips are required to fetch a blob with a progress bar. The first is a call to Stat (HEAD request), to determine the size. Then Open is called, which also calls Stat, and finally performs a GET request. Only the GET request is actually needed. The size of the blob can be sniffed from Content-Length in the GET response. This commit changes HTTPReadSeeker to automatically detect the size from Content-Length instead of requiring it to be passed in. The Stat call is removed from Open because it is no longer necessary. HTTPReadSeeker now takes an additional errorHandler callback argument which translates an unsuccessful HTTP response into an appropriate API-level error. Using a callback for this makes it possible to avoid leaking the repsonse body to Read's caller, which would make lifecycle management problematic. Fixes #1223 Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>		2015-12-02 14:21:13 -08:00
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auth	Add expires_in and issued_at to the auth spec.	2015-10-27 11:05:33 -07:00
transport	Avoid stat round-trips when fetching a blob	2015-12-02 14:21:13 -08:00
blob_writer_test.go	Add ability to pass in substitution args into an Error	2015-07-15 11:02:10 -07:00
blob_writer.go	Add pull through cache functionality to the Registry which can be configured	2015-08-04 16:09:55 -07:00
errors.go	Move common error codes to errcode package	2015-08-11 11:50:58 -07:00
repository_test.go	Correct unmarshal order for SignedManifest	2015-10-14 14:37:34 -07:00
repository.go	Avoid stat round-trips when fetching a blob	2015-12-02 14:21:13 -08:00