64bd0e4589
Make scope.Kind of pod/attach, pod/exec, pod/portforward, node/proxy, service/proxy to their respective subresource Kind, instead of the parent Kind. The kind is used by the admission webhook controller to determine how to convert the object.
79 lines
2.7 KiB
Go
79 lines
2.7 KiB
Go
/*
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Copyright 2015 The Kubernetes 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 service
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import (
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"context"
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"fmt"
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"net/http"
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"net/url"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/net"
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"k8s.io/apimachinery/pkg/util/proxy"
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"k8s.io/apiserver/pkg/registry/rest"
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api "k8s.io/kubernetes/pkg/apis/core"
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"k8s.io/kubernetes/pkg/capabilities"
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)
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// ProxyREST implements the proxy subresource for a Service
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type ProxyREST struct {
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Redirector rest.Redirector
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ProxyTransport http.RoundTripper
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}
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// Implement Connecter
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var _ = rest.Connecter(&ProxyREST{})
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var proxyMethods = []string{"GET", "POST", "PUT", "PATCH", "DELETE", "HEAD", "OPTIONS"}
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// New returns an empty service resource
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func (r *ProxyREST) New() runtime.Object {
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return &api.ServiceProxyOptions{}
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}
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// ConnectMethods returns the list of HTTP methods that can be proxied
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func (r *ProxyREST) ConnectMethods() []string {
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return proxyMethods
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}
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// NewConnectOptions returns versioned resource that represents proxy parameters
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func (r *ProxyREST) NewConnectOptions() (runtime.Object, bool, string) {
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return &api.ServiceProxyOptions{}, true, "path"
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}
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// Connect returns a handler for the service proxy
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func (r *ProxyREST) Connect(ctx context.Context, id string, opts runtime.Object, responder rest.Responder) (http.Handler, error) {
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proxyOpts, ok := opts.(*api.ServiceProxyOptions)
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if !ok {
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return nil, fmt.Errorf("Invalid options object: %#v", opts)
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}
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location, transport, err := r.Redirector.ResourceLocation(ctx, id)
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if err != nil {
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return nil, err
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}
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location.Path = net.JoinPreservingTrailingSlash(location.Path, proxyOpts.Path)
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// Return a proxy handler that uses the desired transport, wrapped with additional proxy handling (to get URL rewriting, X-Forwarded-* headers, etc)
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return newThrottledUpgradeAwareProxyHandler(location, transport, true, false, responder), nil
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}
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func newThrottledUpgradeAwareProxyHandler(location *url.URL, transport http.RoundTripper, wrapTransport, upgradeRequired bool, responder rest.Responder) *proxy.UpgradeAwareHandler {
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handler := proxy.NewUpgradeAwareHandler(location, transport, wrapTransport, upgradeRequired, proxy.NewErrorResponder(responder))
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handler.MaxBytesPerSec = capabilities.Get().PerConnectionBandwidthLimitBytesPerSec
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return handler
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}
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