140 lines
3.1 KiB
Go
140 lines
3.1 KiB
Go
/*
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Copyright 2017 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 controller
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import (
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"fmt"
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"net"
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"net/http"
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"net/http/httptest"
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"os"
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"os/exec"
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"testing"
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"k8s.io/apiserver/pkg/server/healthz"
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"k8s.io/kubernetes/pkg/util/filesystem"
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"k8s.io/ingress-nginx/internal/file"
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ngx_config "k8s.io/ingress-nginx/internal/ingress/controller/config"
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"k8s.io/ingress-nginx/internal/nginx"
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)
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func TestNginxCheck(t *testing.T) {
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mux := http.NewServeMux()
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listener, err := net.Listen("unix", nginx.StatusSocket)
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if err != nil {
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t.Errorf("crating unix listener: %s", err)
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}
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defer listener.Close()
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defer os.Remove(nginx.StatusSocket)
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server := &httptest.Server{
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Listener: listener,
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Config: &http.Server{
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Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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fmt.Fprintf(w, "ok")
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}),
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},
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}
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defer server.Close()
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server.Start()
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// mock filesystem
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fs := filesystem.DefaultFs{}
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n := &NGINXController{
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cfg: &Configuration{
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ListenPorts: &ngx_config.ListenPorts{},
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},
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fileSystem: fs,
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}
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t.Run("no pid or process", func(t *testing.T) {
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if err := callHealthz(true, mux); err == nil {
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t.Error("expected an error but none returned")
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}
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})
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// create pid file
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fs.MkdirAll("/tmp", file.ReadWriteByUser)
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pidFile, err := fs.Create(nginx.PID)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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t.Run("no process", func(t *testing.T) {
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if err := callHealthz(true, mux); err == nil {
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t.Error("expected an error but none returned")
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}
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})
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// start dummy process to use the PID
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cmd := exec.Command("sleep", "3600")
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cmd.Start()
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pid := cmd.Process.Pid
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defer cmd.Process.Kill()
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go func() {
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cmd.Wait()
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}()
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pidFile.Write([]byte(fmt.Sprintf("%v", pid)))
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pidFile.Close()
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healthz.InstallHandler(mux, n)
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t.Run("valid request", func(t *testing.T) {
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if err := callHealthz(false, mux); err != nil {
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t.Error(err)
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}
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})
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// pollute pid file
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pidFile.Write([]byte(fmt.Sprint("999999")))
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pidFile.Close()
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t.Run("bad pid", func(t *testing.T) {
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if err := callHealthz(true, mux); err == nil {
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t.Error("expected an error but none returned")
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}
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})
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}
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func callHealthz(expErr bool, mux *http.ServeMux) error {
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req, err := http.NewRequest("GET", "/healthz", nil)
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if err != nil {
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return fmt.Errorf("healthz error: %v", err)
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}
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w := httptest.NewRecorder()
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mux.ServeHTTP(w, req)
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if expErr && w.Code != http.StatusInternalServerError {
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return fmt.Errorf("expected an error")
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}
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if w.Body.String() != "ok" {
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return fmt.Errorf("healthz error: %v", w.Body.String())
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}
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if w.Code != http.StatusOK {
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return fmt.Errorf("expected status code 200 but %v returned", w.Code)
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}
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return nil
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}
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