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- // Copyright 2018 Google LLC
- //
- // 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.
-
- // +build go1.8
-
- package main_test
-
- import (
- "crypto/tls"
- "crypto/x509"
- "errors"
- "fmt"
- "io/ioutil"
- "net"
- "net/http"
- "net/url"
- "os"
- "os/exec"
- "strings"
- "testing"
- "time"
-
- "cloud.google.com/go/internal/testutil"
- "cloud.google.com/go/storage"
- "golang.org/x/net/context"
- "golang.org/x/oauth2"
- "google.golang.org/api/option"
- )
-
- const initial = "initial state"
-
- func TestIntegration_HTTPR(t *testing.T) {
- if testing.Short() {
- t.Skip("Integration tests skipped in short mode")
- }
- if testutil.ProjID() == "" {
- t.Fatal("set GCLOUD_TESTS_GOLANG_PROJECT_ID and GCLOUD_TESTS_GOLANG_KEY")
- }
- // Get a unique temporary filename.
- f, err := ioutil.TempFile("", "httpreplay")
- if err != nil {
- t.Fatal(err)
- }
- replayFilename := f.Name()
- if err := f.Close(); err != nil {
- t.Fatal(err)
- }
- defer os.Remove(replayFilename)
-
- if err := exec.Command("go", "build").Run(); err != nil {
- t.Fatalf("running 'go build': %v", err)
- }
- defer os.Remove("./httpr")
- want := runRecord(t, replayFilename)
- got := runReplay(t, replayFilename)
- if got != want {
- t.Fatalf("got %q, want %q", got, want)
- }
- }
-
- func runRecord(t *testing.T, filename string) string {
- cmd, tr, cport, err := start("-record", filename)
- if err != nil {
- t.Fatal(err)
- }
- defer stop(t, cmd)
-
- ctx := context.Background()
- hc := &http.Client{
- Transport: &oauth2.Transport{
- Base: tr,
- Source: testutil.TokenSource(ctx, storage.ScopeFullControl),
- },
- }
- res, err := http.Post(
- fmt.Sprintf("http://localhost:%s/initial", cport),
- "text/plain",
- strings.NewReader(initial))
- if err != nil {
- t.Fatal(err)
- }
- if res.StatusCode != 200 {
- t.Fatalf("from POST: %s", res.Status)
- }
- info, err := getBucketInfo(ctx, hc)
- if err != nil {
- t.Fatal(err)
- }
- return info
- }
-
- func runReplay(t *testing.T, filename string) string {
- cmd, tr, cport, err := start("-replay", filename)
- if err != nil {
- t.Fatal(err)
- }
- defer stop(t, cmd)
-
- hc := &http.Client{Transport: tr}
- res, err := http.Get(fmt.Sprintf("http://localhost:%s/initial", cport))
- if err != nil {
- t.Fatal(err)
- }
- if res.StatusCode != 200 {
- t.Fatalf("from GET: %s", res.Status)
- }
- bytes, err := ioutil.ReadAll(res.Body)
- res.Body.Close()
- if err != nil {
- t.Fatal(err)
- }
- if got, want := string(bytes), initial; got != want {
- t.Errorf("initial: got %q, want %q", got, want)
- }
- info, err := getBucketInfo(context.Background(), hc)
- if err != nil {
- t.Fatal(err)
- }
- return info
- }
-
- // Start the proxy binary and wait for it to come up.
- // Return a transport that talks to the proxy, as well as the control port.
- // modeFlag must be either "-record" or "-replay".
- func start(modeFlag, filename string) (*exec.Cmd, *http.Transport, string, error) {
- pport, err := pickPort()
- if err != nil {
- return nil, nil, "", err
- }
- cport, err := pickPort()
- if err != nil {
- return nil, nil, "", err
- }
- cmd := exec.Command("./httpr", "-port", pport, "-control-port", cport, modeFlag, filename, "-debug-headers")
- if err := cmd.Start(); err != nil {
- return nil, nil, "", err
- }
- // Wait for the server to come up.
- serverUp := false
- for i := 0; i < 10; i++ {
- if conn, err := net.Dial("tcp", "localhost:"+cport); err == nil {
- conn.Close()
- serverUp = true
- break
- }
- time.Sleep(time.Second)
- }
- if !serverUp {
- return nil, nil, "", errors.New("server never came up")
- }
- tr, err := proxyTransport(pport, cport)
- if err != nil {
- return nil, nil, "", err
- }
- return cmd, tr, cport, nil
- }
-
- func stop(t *testing.T, cmd *exec.Cmd) {
- if err := cmd.Process.Signal(os.Interrupt); err != nil {
- t.Fatal(err)
- }
- }
-
- // pickPort picks an unused port.
- func pickPort() (string, error) {
- l, err := net.Listen("tcp", ":0")
- if err != nil {
- return "", err
- }
- addr := l.Addr().String()
- _, port, err := net.SplitHostPort(addr)
- if err != nil {
- return "", err
- }
- l.Close()
- return port, nil
- }
-
- func proxyTransport(pport, cport string) (*http.Transport, error) {
- caCert, err := getBody(fmt.Sprintf("http://localhost:%s/authority.cer", cport))
- if err != nil {
- return nil, err
- }
- caCertPool := x509.NewCertPool()
- if !caCertPool.AppendCertsFromPEM([]byte(caCert)) {
- return nil, errors.New("bad CA Cert")
- }
- return &http.Transport{
- Proxy: http.ProxyURL(&url.URL{Host: "localhost:" + pport}),
- TLSClientConfig: &tls.Config{RootCAs: caCertPool},
- }, nil
- }
-
- func getBucketInfo(ctx context.Context, hc *http.Client) (string, error) {
- client, err := storage.NewClient(ctx, option.WithHTTPClient(hc))
- if err != nil {
- return "", err
- }
- defer client.Close()
- b := client.Bucket(testutil.ProjID())
- attrs, err := b.Attrs(ctx)
- if err != nil {
- return "", err
- }
- return fmt.Sprintf("name:%s reqpays:%v location:%s sclass:%s",
- attrs.Name, attrs.RequesterPays, attrs.Location, attrs.StorageClass), nil
- }
-
- func getBody(url string) ([]byte, error) {
- res, err := http.Get(url)
- if err != nil {
- return nil, err
- }
- if res.StatusCode != 200 {
- return nil, fmt.Errorf("response: %s", res.Status)
- }
- defer res.Body.Close()
- return ioutil.ReadAll(res.Body)
- }
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