The Lister and Watcher interfaces only supported methods without context, but
were typically implemented with client-go API calls which need a context. New
interfaces get added using the same approach as in
https://github.com/kubernetes/kubernetes/pull/129109.
Kubernetes-commit: 6688adae142e37114d9dfa8d94cd1d8a91fbcc13
cache.ErrRequeue advertised itself as a way to requeue failures on a
FIFO, but it suffers the same problems as AddIfNotPresent. If we do
requeue an item at the end, we'll move the informer back in time. If we
requeue at the beginning we'll simply wedge FIFO.
We didn't find examples in the wild, but by removing the error type
those impacted will get a compile error and get to decide what action is
most appropriate for their failure. Most of the time, proceeding to the
next item is best.
Kubernetes-commit: 238c32a1d9b2c72d648193fa8642a53a2884975f
Logically a cache.Queue.AddIfNotPresent means that the informer can move
back in time since an older item is placed after newer items. The
alternative of placing errors at the head of the queue leads to
indefinite memory growth and repeated failures on retry.
Luckily this behavior was behind RetryOnError, which was always set to
false and impossible for normal users to set to true. By removing the
function and setting, impacted users (none found in a github search)
will get a compile failure.
Kubernetes-commit: 8e77ac000131019d5aa49c19aa1f477f6dac4d59
The revised logging emits one log entry at the start of
round-tripping ("Request") and another at the end ("Response"). This avoids the
risk that related output gets interleaved by other output.
No API changes are necessary. A contextual logger is picked up from the context
of the request that is being handled. The verbosity level of that logger is
checked to determine what is supposed to be logged. This enables reducing log
details on a by-request basis by storing a `logger.V(1)` in the context of the
request.
As before, logging only gets injected into request processing at -v6 or higher,
so normally there is no additional overhead.
Kubernetes-commit: a85f489b28d3b0ef82dffb267b6145c73c2d0e33
* `client-go`: transform `watchErrorStream` to wrap the underlying error
This PR transforms the `client-go`'s `watchErrorStream` to wrap the error instead of transforming it into a single string. This enables clients to use `errors.Is/As/Unwrap` with the errors that come out of `StreamWithContext`
Fixes https://github.com/kubernetes/kubernetes/issues/129763
* adjust unit tests
Kubernetes-commit: 067012f5844b7390e7279f575342ae0536f80520
Storing a context and making sure that it never gets canceled also has
overhead. We might as well just do the klog.FromContext when constructing
the Result and store the logger for later use.
Kubernetes-commit: b7386467c8df686e935c477eac26049a80de789b
The BackoffManager interface sleeps without considering the caller's context,
i.e. cancellation is not supported. This alone is reason enough to deprecate it
and to replace it with an interface that supports a context parameter.
The other reason is that contextual logging needs that parameter.
Kubernetes-commit: b15a1943d51adfb8c5e0185d58d25e038c3d6ade
The default handler now uses contextual logging. Instead of
warnings.go:106] warning 1
it now logs the caller of client-go and uses structured, contextual
logging
main.go:100] "Warning" message="warning 1"
Users of client-go have the choice whether the handler that they provide uses
the traditional API (no API break!) or contextual logging.
Kubernetes-commit: 48fb886325fce4b16e4067caadb7bcd3044d460f
The last dependency pulling in the tips of go-difflib and go-spew has
reverted to the last release of both projects, so k/k can revert to
the releases too. As can be seen from the contents of vendor, this
doesn't result in any actual change in the code.
Signed-off-by: Stephen Kitt <skitt@redhat.com>
Kubernetes-commit: 3986472b3c7202716f92e586ccfaa4b4fe573dc5
The test relied on a 100ms sleep to ensure that controller was done. If that
race was lost, one goroutine was intentionally prevented from completing by
locking a mutex permanently. A TODO was left about detecting that.
Adding goroutine leak checking in
https://github.com/kubernetes/kubernetes/pull/126387 revealed that this race
indeed sometimes is lost because the goroutine
leaked (https://github.com/kubernetes/kubernetes/issues/129400).
Waiting for controller shutdown instead of relying on timing should fix this.
Kubernetes-commit: 8e1403563a60f3b7a258e3bbb64b5c3a7f6548fb
The methods NewFakeClock were using a testing dependency as a parameter,
to avoid breaking compatibility and to remove this dependency, just use
the clock.Clock interface.
If we have to do it again most probable we have chosen other pattern and
for sure other names, but now is too late.
Kubernetes-commit: 5c283cbb453acac9869b49020f6f999796360729
