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webhook_server.go 4.09 KB
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/*
Copyright 2018 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package testing
import (
"crypto/tls"
"crypto/x509"
"encoding/json"
"fmt"
"net/http"
"net/http/httptest"
"testing"
"k8s.io/api/admission/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apiserver/pkg/admission/plugin/webhook/testcerts"
)
// NewTestServer returns a webhook test HTTPS server with fixed webhook test certs.
func NewTestServer(t *testing.T) *httptest.Server {
// Create the test webhook server
sCert, err := tls.X509KeyPair(testcerts.ServerCert, testcerts.ServerKey)
if err != nil {
t.Fatal(err)
}
rootCAs := x509.NewCertPool()
rootCAs.AppendCertsFromPEM(testcerts.CACert)
testServer := httptest.NewUnstartedServer(http.HandlerFunc(webhookHandler))
testServer.TLS = &tls.Config{
Certificates: []tls.Certificate{sCert},
ClientCAs: rootCAs,
ClientAuth: tls.RequireAndVerifyClientCert,
}
return testServer
}
func webhookHandler(w http.ResponseWriter, r *http.Request) {
fmt.Printf("got req: %v\n", r.URL.Path)
switch r.URL.Path {
case "/internalErr":
http.Error(w, "webhook internal server error", http.StatusInternalServerError)
return
case "/invalidReq":
w.WriteHeader(http.StatusSwitchingProtocols)
w.Write([]byte("webhook invalid request"))
return
case "/invalidResp":
w.Header().Set("Content-Type", "application/json")
w.Write([]byte("webhook invalid response"))
case "/disallow":
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(&v1beta1.AdmissionReview{
Response: &v1beta1.AdmissionResponse{
Allowed: false,
},
})
case "/disallowReason":
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(&v1beta1.AdmissionReview{
Response: &v1beta1.AdmissionResponse{
Allowed: false,
Result: &metav1.Status{
Message: "you shall not pass",
},
},
})
case "/allow":
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(&v1beta1.AdmissionReview{
Response: &v1beta1.AdmissionResponse{
Allowed: true,
AuditAnnotations: map[string]string{
"key1": "value1",
},
},
})
case "/removeLabel":
w.Header().Set("Content-Type", "application/json")
pt := v1beta1.PatchTypeJSONPatch
json.NewEncoder(w).Encode(&v1beta1.AdmissionReview{
Response: &v1beta1.AdmissionResponse{
Allowed: true,
PatchType: &pt,
Patch: []byte(`[{"op": "remove", "path": "/metadata/labels/remove"}]`),
AuditAnnotations: map[string]string{
"key1": "value1",
},
},
})
case "/addLabel":
w.Header().Set("Content-Type", "application/json")
pt := v1beta1.PatchTypeJSONPatch
json.NewEncoder(w).Encode(&v1beta1.AdmissionReview{
Response: &v1beta1.AdmissionResponse{
Allowed: true,
PatchType: &pt,
Patch: []byte(`[{"op": "add", "path": "/metadata/labels/added", "value": "test"}]`),
},
})
case "/invalidMutation":
w.Header().Set("Content-Type", "application/json")
pt := v1beta1.PatchTypeJSONPatch
json.NewEncoder(w).Encode(&v1beta1.AdmissionReview{
Response: &v1beta1.AdmissionResponse{
Allowed: true,
PatchType: &pt,
Patch: []byte(`[{"op": "add", "CORRUPTED_KEY":}]`),
},
})
case "/nilResponse":
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(&v1beta1.AdmissionReview{})
case "/invalidAnnotation":
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(&v1beta1.AdmissionReview{
Response: &v1beta1.AdmissionResponse{
Allowed: true,
AuditAnnotations: map[string]string{
"invalid*key": "value1",
},
},
})
default:
http.NotFound(w, r)
}
}

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