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package plugins // import "github.com/docker/docker/pkg/plugins"
import (
"bytes"
"encoding/json"
"io"
"net/http"
"net/http/httptest"
"net/url"
"strings"
"testing"
"time"
"github.com/docker/docker/pkg/plugins/transport"
"github.com/docker/go-connections/tlsconfig"
"github.com/pkg/errors"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
)
var (
mux *http.ServeMux
server *httptest.Server
)
func setupRemotePluginServer() string {
mux = http.NewServeMux()
server = httptest.NewServer(mux)
return server.URL
}
func teardownRemotePluginServer() {
if server != nil {
server.Close()
}
}
func TestFailedConnection(t *testing.T) {
c, _ := NewClient("tcp://127.0.0.1:1", &tlsconfig.Options{InsecureSkipVerify: true})
_, err := c.callWithRetry("Service.Method", nil, false)
if err == nil {
t.Fatal("Unexpected successful connection")
}
}
func TestFailOnce(t *testing.T) {
addr := setupRemotePluginServer()
defer teardownRemotePluginServer()
failed := false
mux.HandleFunc("/Test.FailOnce", func(w http.ResponseWriter, r *http.Request) {
if !failed {
failed = true
panic("Plugin not ready")
}
})
c, _ := NewClient(addr, &tlsconfig.Options{InsecureSkipVerify: true})
b := strings.NewReader("body")
_, err := c.callWithRetry("Test.FailOnce", b, true)
if err != nil {
t.Fatal(err)
}
}
func TestEchoInputOutput(t *testing.T) {
addr := setupRemotePluginServer()
defer teardownRemotePluginServer()
m := Manifest{[]string{"VolumeDriver", "NetworkDriver"}}
mux.HandleFunc("/Test.Echo", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
t.Fatalf("Expected POST, got %s\n", r.Method)
}
header := w.Header()
header.Set("Content-Type", transport.VersionMimetype)
io.Copy(w, r.Body)
})
c, _ := NewClient(addr, &tlsconfig.Options{InsecureSkipVerify: true})
var output Manifest
err := c.Call("Test.Echo", m, &output)
if err != nil {
t.Fatal(err)
}
assert.Check(t, is.DeepEqual(m, output))
err = c.Call("Test.Echo", nil, nil)
if err != nil {
t.Fatal(err)
}
}
func TestBackoff(t *testing.T) {
cases := []struct {
retries int
expTimeOff time.Duration
}{
{0, time.Duration(1)},
{1, time.Duration(2)},
{2, time.Duration(4)},
{4, time.Duration(16)},
{6, time.Duration(30)},
{10, time.Duration(30)},
}
for _, c := range cases {
s := c.expTimeOff * time.Second
if d := backoff(c.retries); d != s {
t.Fatalf("Retry %v, expected %v, was %v\n", c.retries, s, d)
}
}
}
func TestAbortRetry(t *testing.T) {
cases := []struct {
timeOff time.Duration
expAbort bool
}{
{time.Duration(1), false},
{time.Duration(2), false},
{time.Duration(10), false},
{time.Duration(30), true},
{time.Duration(40), true},
}
for _, c := range cases {
s := c.timeOff * time.Second
if a := abort(time.Now(), s); a != c.expAbort {
t.Fatalf("Duration %v, expected %v, was %v\n", c.timeOff, s, a)
}
}
}
func TestClientScheme(t *testing.T) {
cases := map[string]string{
"tcp://127.0.0.1:8080": "http",
"unix:///usr/local/plugins/foo": "http",
"http://127.0.0.1:8080": "http",
"https://127.0.0.1:8080": "https",
}
for addr, scheme := range cases {
u, err := url.Parse(addr)
if err != nil {
t.Fatal(err)
}
s := httpScheme(u)
if s != scheme {
t.Fatalf("URL scheme mismatch, expected %s, got %s", scheme, s)
}
}
}
func TestNewClientWithTimeout(t *testing.T) {
addr := setupRemotePluginServer()
defer teardownRemotePluginServer()
m := Manifest{[]string{"VolumeDriver", "NetworkDriver"}}
mux.HandleFunc("/Test.Echo", func(w http.ResponseWriter, r *http.Request) {
time.Sleep(time.Duration(600) * time.Millisecond)
io.Copy(w, r.Body)
})
// setting timeout of 500ms
timeout := time.Duration(500) * time.Millisecond
c, _ := NewClientWithTimeout(addr, &tlsconfig.Options{InsecureSkipVerify: true}, timeout)
var output Manifest
err := c.Call("Test.Echo", m, &output)
if err == nil {
t.Fatal("Expected timeout error")
}
}
func TestClientStream(t *testing.T) {
addr := setupRemotePluginServer()
defer teardownRemotePluginServer()
m := Manifest{[]string{"VolumeDriver", "NetworkDriver"}}
var output Manifest
mux.HandleFunc("/Test.Echo", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
t.Fatalf("Expected POST, got %s", r.Method)
}
header := w.Header()
header.Set("Content-Type", transport.VersionMimetype)
io.Copy(w, r.Body)
})
c, _ := NewClient(addr, &tlsconfig.Options{InsecureSkipVerify: true})
body, err := c.Stream("Test.Echo", m)
if err != nil {
t.Fatal(err)
}
defer body.Close()
if err := json.NewDecoder(body).Decode(&output); err != nil {
t.Fatalf("Test.Echo: error reading plugin resp: %v", err)
}
assert.Check(t, is.DeepEqual(m, output))
}
func TestClientSendFile(t *testing.T) {
addr := setupRemotePluginServer()
defer teardownRemotePluginServer()
m := Manifest{[]string{"VolumeDriver", "NetworkDriver"}}
var output Manifest
var buf bytes.Buffer
if err := json.NewEncoder(&buf).Encode(m); err != nil {
t.Fatal(err)
}
mux.HandleFunc("/Test.Echo", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
t.Fatalf("Expected POST, got %s\n", r.Method)
}
header := w.Header()
header.Set("Content-Type", transport.VersionMimetype)
io.Copy(w, r.Body)
})
c, _ := NewClient(addr, &tlsconfig.Options{InsecureSkipVerify: true})
if err := c.SendFile("Test.Echo", &buf, &output); err != nil {
t.Fatal(err)
}
assert.Check(t, is.DeepEqual(m, output))
}
func TestClientWithRequestTimeout(t *testing.T) {
type timeoutError interface {
Timeout() bool
}
timeout := 1 * time.Millisecond
testHandler := func(w http.ResponseWriter, r *http.Request) {
time.Sleep(timeout + 1*time.Millisecond)
w.WriteHeader(http.StatusOK)
}
srv := httptest.NewServer(http.HandlerFunc(testHandler))
defer srv.Close()
client := &Client{http: srv.Client(), requestFactory: &testRequestWrapper{srv}}
_, err := client.callWithRetry("/Plugin.Hello", nil, false, WithRequestTimeout(timeout))
assert.Assert(t, is.ErrorContains(err, ""), "expected error")
var tErr timeoutError
assert.Assert(t, errors.As(err, &tErr))
assert.Assert(t, tErr.Timeout())
}
type testRequestWrapper struct {
*httptest.Server
}
func (w *testRequestWrapper) NewRequest(path string, data io.Reader) (*http.Request, error) {
req, err := http.NewRequest(http.MethodPost, path, data)
if err != nil {
return nil, err
}
u, err := url.Parse(w.Server.URL)
if err != nil {
return nil, err
}
req.URL = u
return req, nil
}
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