This makes use of pkg/sys's IgnoringEintr function
to clean up some of the redundant eintr loops we
had laying around.
Signed-off-by: Danny Canter <danny@dcantah.dev>
Use the Syncfs wrapper function defined in the golang.org/x/sys/unix
package instead of manually wrapping it in doSyncFs.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Currenlty transfer service doesn't handle plain HTTP connection.
This commit fixes this issue by propagating
`(core/remotes/docker/config).HostOptions.DefaultScheme` from client to the
transfer service.
This commit also fixes ctr to use this feature for "--plain-http" flag.
Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
This TODO was added in 9e6db71954, at which time
the reference package was part of the docker/distribution (registry) repository.
The reference package has moved to a standalone module, which has been in use
since 4923470902, so this should no longer be a
concern.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Currently transfer service isn't aware of configurations of hosts directory and
ctr's `--hosts-dir` doesn't work.
This commit fixes this issue by using `config.ConfigureHosts` instead of
`docker.ConfigureDefaultRegistries`.
This commit also fixes ctr to use this feature for "--hosts-dir" flag.
Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
Split service proxy from service plugin.
Make introspection service easier for clients to use.
Update service proxy to support grpc and ttrpc.
Signed-off-by: Derek McGowan <derek@mcg.dev>
Adds a plugin type for container monitor.
Rename the task monitor type to avoid confusion.
Add config migration for new plugin types to pass existing migration
tests.
Signed-off-by: Derek McGowan <derek@mcg.dev>
Schema 1 (`application/vnd.docker.distribution.manifest.v1+prettyjws`) has been
officially deprecated since containerd v1.7 (PR 6884).
We have planned to remove the support for Schema 1 in containerd v2.0, but this
removal may still surprise some users.
So, in containerd v2.0 we will just disable it by default.
The support for Schema 1 can be still enabled by setting an environment variable
`CONTAINERD_ENABLE_DEPRECATED_PULL_SCHEMA_1_IMAGE=1`, however, this workaround
will be completely removed in containerd v2.1.
Schema 2 was introduced in Docker 1.10 (Feb 2016), so most users should
have been already using Schema 2 or OCI.
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
Packages related to transfer and unpacking provide core interfaces which
use other core interfaces and part of common functionality.
Signed-off-by: Derek McGowan <derek@mcg.dev>
The metadata store is in the best place to handle events directly after
the database has been updated. This prevents every user of the image
store interface from having to know whether or not they are responsible
for publishing events and avoid double events if the grpc local service
is used.
Signed-off-by: Derek McGowan <derek@mcg.dev>
We also need an additional check to avoid setting both the error and
response which can create a race where they can arrive in the receiving
thread in either order.
If we hit an error, we don't need to send the response.
> There is a condition where the registry (unexpectedly, not to spec)
> returns 201 or 204 on the put before the body is fully written. I would
> expect that the http library would issue close and could fall into a
> deadlock here. We could just read respC and call setResponse. In that
> case ErrClosedPipe would get returned and Commit shouldn't be called
> anyway.
Signed-off-by: Justin Chadwell <me@jedevc.com>
If sending two messages from goroutine X:
a <- 1
b <- 2
And receiving them in goroutine Y:
select {
case <- a:
case <- b:
}
Either branch of the select can trigger first - so when we call
.setError and .Close next to each other, we don't know whether the done
channel will close first or the error channel will receive first - so
sometimes, we get an incorrect error message.
We resolve this by not sending both signals - instead, we can have
.setError *imply* .Close, by having the pushWriter call .Close on
itself, after receiving an error.
Signed-off-by: Justin Chadwell <me@jedevc.com>
If a writer continually asks to be reset then it should always succeed -
it should be the responsibility of the underlying content.Writer to
stop producing ErrReset after some amount of time and to instead return
the underlying issue - which pushWriter already does today, using the
doWithRetries function.
doWithRetries already has a separate cap for retries of 6 requests (5
retries after the original failure), and it seems like this would be
previously overridden by content.Copy's max number of 5 attempts, hiding
the original error.
Signed-off-by: Justin Chadwell <me@jedevc.com>
If we get io.ErrClosedPipe in pushWriter.Write, there are three possible
scenarios:
- The request has failed, we need to attempt a reset, so we can expect a
new pipe incoming on pipeC.
- The request has failed, we don't need to attempt a reset, so we can
expect an incoming error on errC.
- Something else externally has called Close, so we can expect the done
channel to be closed.
This patch ensures that we block for as long as possible (while still
handling each of the above cases, so we avoid hanging), to make sure
that we properly return an appropriate error message each time.
Signed-off-by: Justin Chadwell <me@jedevc.com>
If Close is called externally before a request is attempted, then we
will accidentally attempt to send to a closed channel, causing a panic.
To avoid this, we can check to see if Close has been called, using a
done channel. If this channel is ever done, we drop any incoming errors,
requests or pipes - we don't need them, since we're done.
Signed-off-by: Justin Chadwell <me@jedevc.com>
io.Pipe produces a PipeReader and a PipeWriter - a close on the write
side, causes an error on both the read and write sides, while a close on
the read side causes an error on only the read side. Previously, we
explicitly prohibited closing from the read side.
However, http.Request.Body requires that "calling Close should unblock a
Read waiting for input". Our reader will not do this - calling close
becomes a no-op. This can cause a deadlock because client.Do may never
terminate in some circumstances.
We need the Reader side to close its side of the pipe as well, which it
already does using the go standard library - otherwise, we can hang
forever, writing to a pipe that will never be closed.
Allowing the requester to close the body should be safe - we never reuse
the same reader between requests, as the result of body() will never be
reused by the guarantees of the standard library.
Signed-off-by: Justin Chadwell <me@jedevc.com>
