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Decouple vkubelet/* packages from providers (#626)

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This makes the concept of a `Provider` wholely implemented in the cli
implementation in cmd/virtual-kubelet.

It allows us to slim down the interfaces used in vkubelet (and
vkubelet/api) to what is actually used there rather than a huge
interface that is only there to serve the CLI's needs.
This commit is contained in:
Brian Goff
2019-05-17 17:01:05 -07:00
committed by GitHub
parent 87e72bf4df
commit 7dd49516d8
26 changed files with 217 additions and 194 deletions
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15
vkubelet/api/stats.go
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@@ -10,15 +10,16 @@ import (
stats "k8s.io/kubernetes/pkg/kubelet/apis/stats/v1alpha1"
)
// PodMetricsBackend is used in place of backend implementations to get k8s pod metrics.
type PodMetricsBackend interface {
GetStatsSummary(context.Context) (*stats.Summary, error)
}
// PodStatsSummaryHandlerFunc defines the handler for getting pod stats summaries
type PodStatsSummaryHandlerFunc func(context.Context) (*stats.Summary, error)
// PodMetricsHandlerFunc makes an HTTP handler for implementing the kubelet summary stats endpoint
func PodMetricsHandlerFunc(b PodMetricsBackend) http.HandlerFunc {
// HandlePodStatsSummary makes an HTTP handler for implementing the kubelet summary stats endpoint
func HandlePodStatsSummary(h PodStatsSummaryHandlerFunc) http.HandlerFunc {
if h == nil {
return NotImplemented
}
return handleError(func(w http.ResponseWriter, req *http.Request) error {
stats, err := b.GetStatsSummary(req.Context())
stats, err := h(req.Context())
if err != nil {
if errors.Cause(err) == context.Canceled {
return strongerrors.Cancelled(err)