* Implement a new package: engine. It exposes a useful but minimalist job API.
* Refactor main() to instanciate an Engine instead of a Server directly.
* Refactor server.go to register an engine job.
This is the smallest possible refactor which can include the new Engine design
into master. More gradual refactoring will follow.
To improve the use of docker with a private registry the login
command is extended with a parameter for the server address.
While implementing i noticed that two problems hindered authentication to a
private registry:
1. the resolve of the authentication did not match during push
because the looked up key was for example localhost:8080 but
the stored one would have been https://localhost:8080
Besides The lookup needs to still work if the https->http fallback
is used
2. During pull of an image no authentication is sent, which
means all repositories are expected to be private.
These points are fixed now. The changes are implemented in
a way to be compatible to existing behavior both in the
API as also with the private registry.
Update:
- login does not require the full url any more, you can login
to the repository prefix:
example:
docker logon localhost:8080
Fixed corner corner cases:
- When login is done during pull and push the registry endpoint is used and
not the central index
- When Remote sends a 401 during pull, it is now correctly delegating to
CmdLogin
- After a Login is done pull and push are using the newly entered login data,
and not the previous ones. This one seems to be also broken in master, too.
- Auth config is now transfered in a parameter instead of the body when
/images/create is called.
During parallel pull of a repostiory it can happen that the same layer
is pulled more than once.
To fix this I have extended the locking code to
- avoid multiple pulls of the same image
- avoid multiple pulls of the same layer
If an error occurs the other layers are awaited before returning as leaving
the scope before the go routines leave causes crashes of the server sometimes
if the download status is updated while the http stream is already closed
Beside this I have extended status display.
