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https://github.com/kubevela/kubevela.git
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e8d051a532
* Feat: init multicluster * Feat: add secret namespace auto-detect * Style: format * Style: split gc codes * Feat: add cluster cli * Fix: rebase workflow on master * Feat: add component selector for env binding * Fix: selector & patch conflict * Feat: add local cluster support & fix unit test * Fix: fix omitempty bug * Feat(health-scope): support multi-cluster's healthcheck * Fix: resourcetracker gc bug & rename * Feat: add multicluster to op.Read Co-authored-by: yangsoon <songyang.song@alibaba-inc.com>
79 lines
2.6 KiB
Go
79 lines
2.6 KiB
Go
/*
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Copyright 2021 The KubeVela Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package multicluster
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import (
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"net/http"
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"strings"
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utilnet "k8s.io/apimachinery/pkg/util/net"
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"k8s.io/klog/v2"
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clusterapi "github.com/oam-dev/cluster-gateway/pkg/apis/cluster/v1alpha1"
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)
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type secretMultiClusterRoundTripper struct {
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rt http.RoundTripper
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}
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// NewSecretModeMultiClusterRoundTripper will re-write the API path to one of the multi-cluster resource for a request if context has the value
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func NewSecretModeMultiClusterRoundTripper(rt http.RoundTripper) http.RoundTripper {
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return &secretMultiClusterRoundTripper{
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rt: rt,
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}
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}
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// FormatProxyURL will format the request API path by the cluster gateway resources rule
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func FormatProxyURL(clusterName, originalPath string) string {
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originalPath = strings.TrimPrefix(originalPath, "/")
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return strings.Join([]string{"/apis", clusterapi.SchemeGroupVersion.Group, clusterapi.SchemeGroupVersion.Version, "clustergateways", clusterName, "proxy", originalPath}, "/")
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}
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// RoundTrip is the main function for the re-write API path logic
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func (rt *secretMultiClusterRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
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ctx := req.Context()
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clusterName, ok := ctx.Value(ClusterContextKey).(string)
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if !ok || clusterName == "" || clusterName == ClusterLocalName {
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return rt.rt.RoundTrip(req)
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}
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req.URL.Path = FormatProxyURL(clusterName, req.URL.Path)
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return rt.rt.RoundTrip(req)
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}
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func tryCancelRequest(rt http.RoundTripper, req *http.Request) {
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type canceler interface {
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CancelRequest(*http.Request)
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}
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switch rt := rt.(type) {
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case canceler:
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rt.CancelRequest(req)
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case utilnet.RoundTripperWrapper:
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tryCancelRequest(rt.WrappedRoundTripper(), req)
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default:
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klog.Warningf("Unable to cancel request for %T", rt)
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}
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}
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// CancelRequest will try cancel request with the inner round tripper
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func (rt *secretMultiClusterRoundTripper) CancelRequest(req *http.Request) {
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tryCancelRequest(rt.WrappedRoundTripper(), req)
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}
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// WrappedRoundTripper can get the wrapped RoundTripper
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func (rt *secretMultiClusterRoundTripper) WrappedRoundTripper() http.RoundTripper { return rt.rt }
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