If a pod is being gracefully deleted at podcontroller startup,
it will not get deleted via the deletedanglingpods code. This
ensures the normal deletion loop covers the case.
This moves from forcefully deleting pods to deleting pods in a
graceful manner from the API Server. It waits for the pod to
get to a terminal status prior to deleting the pod from api
server.
Pods can be updated outside of VK. Right now, if this happens, pod
status updates are dropped because the resourceversion from the
provider will mismatch with what's on the server, breaking
pod status updates.
Since we're the only ones writing to the pod status, we
can do a blind overwrite.
This removes the legacy sync provider interface. All new providers
are expected to implement the async NotifyPods interface.
The legacy sync provider interface creates complexities around
how the deletion flow works, and the mixed sync and async APIs
block us from evolving functionality.
This collapses in the NotifyPods interface into the PodLifecycleHandler
interface.
This changes the behaviour slightly, so rather than immediately exiting on
context cancellation, this calls shutdown, and waits for the current
items to finish being worked on before returning to the user.
Allows callers to wait for pod controller exit in addition to readiness.
This means the caller does not have to deal handling errors from the pod
controller running in a gorutine since it can wait for exit via `Done()`
and check the error with `Err()`
This caches the downloaded go modules. It invalidates them based on
a hash of the go.mod, and go.sum. The test step showed a reduction
from 1:30 -> 1:00, and the e2e tests from 8:30 to 5 minutes.
* Rename VK to chewong for development purpose
* Rename basic_test.go to basic.go
* Add e2e.go and suite.go
* Disable tests in node.go
* End to end tests are now importable as a testing suite
* Remove 'test' from test files
* Add documentations
* Rename chewong back to virtual-kubelet
* Change 'Testing Suite' to 'Test Suite'
* Add the ability to skip certain testss
* Add unit tests for suite.go
* Add README.md for importable e2e test suite
* VK implementation has to be based on VK v1.0.0
* Stricter checks on validating test functions
* Move certain files back to internal folder
* Add WatchTimeout as a config field
* Add slight modifications
We poll legacy providers for their pod(s) status periodically. This is because
we have no way of knowing when the pod is updated. If the pod somehow goes
missing in the provider, that state must be handled. Currently, we update
API server, and mark the pod as failed, or ignore it.
We introduce a map that can be used to store the pod status. In this,
we do not need to call GetPodStatus immediately after NotifyPods
is called. Instead, we stash the pod passed via notifypods
as in a map we can access later. In addition to this, for legacy
providers, the logic to merge the pod, and the pod status is
hoisted up to the loop.
It prevents leaks by deleting the entry in the map as soon
as the pod is deleted from k8s.
This moves the event handler registration until after the cache
is in-sync.
It makes it so we can use the log object from the context,
rather than having to use the global logger
The cache race condition of the cache starting while the reactor
is being added wont exist because we wait for the cache
to startup / go in sync prior to adding it.
