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use the existing request info

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This commit is contained in:
David Eads 2019-08-29 17:02:23 -04:00
parent 275f5cf5a0
commit c24a36610e
2 changed files with 11 additions and 8 deletions
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16
staging/src/k8s.io/kube-aggregator/pkg/apiserver/handler_proxy.go
View File

@ -181,13 +181,15 @@ func newRequestForProxy(location *url.URL, req *http.Request, enableAggregatedDi
newCtx := req.Context()
cancelFn := func() {}
// trim leading and trailing slashes. Then "/apis/group/version" requests are for discovery, so if we have exactly three
// segments that we are going to proxy, we have a discovery request.
if enableAggregatedDiscoveryTimeout && len(strings.Split(strings.Trim(req.URL.Path, "/"), "/")) == 3 {
// discovery requests are used by kubectl and others to determine which resources a server has. This is a cheap call that
// should be fast for every aggregated apiserver. Latency for aggregation is expected to be low (as for all extensions)
// so forcing a short timeout here helps responsiveness of all clients.
newCtx, cancelFn = context.WithTimeout(newCtx, aggregatedDiscoveryTimeout)
if requestInfo, ok := genericapirequest.RequestInfoFrom(req.Context()); ok {
// trim leading and trailing slashes. Then "/apis/group/version" requests are for discovery, so if we have exactly three
// segments that we are going to proxy, we have a discovery request.
if enableAggregatedDiscoveryTimeout && !requestInfo.IsResourceRequest && len(strings.Split(strings.Trim(requestInfo.Path, "/"), "/")) == 3 {
// discovery requests are used by kubectl and others to determine which resources a server has. This is a cheap call that
// should be fast for every aggregated apiserver. Latency for aggregation is expected to be low (as for all extensions)
// so forcing a short timeout here helps responsiveness of all clients.
newCtx, cancelFn = context.WithTimeout(newCtx, aggregatedDiscoveryTimeout)
}
}
// WithContext creates a shallow clone of the request with the same context.

3
staging/src/k8s.io/kube-aggregator/pkg/apiserver/handler_proxy_test.go
View File

@ -540,7 +540,8 @@ func TestGetContextForNewRequest(t *testing.T) {
}
location.Path = req.URL.Path
newReq, cancelFn := newRequestForProxy(location, req, true)
nestedReq := req.WithContext(genericapirequest.WithRequestInfo(req.Context(), &genericapirequest.RequestInfo{Path: req.URL.Path}))
newReq, cancelFn := newRequestForProxy(location, nestedReq, true)
defer cancelFn()
theproxy := proxy.NewUpgradeAwareHandler(location, server.Client().Transport, true, false, &responder{w: w})