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mw_js_plugin_test.go
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mw_js_plugin_test.go
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package main
import (
"bytes"
"io"
"io/ioutil"
"net/http/httptest"
"regexp"
"strings"
"testing"
"time"
"github.com/Sirupsen/logrus"
prefixed "github.com/x-cray/logrus-prefixed-formatter"
"github.com/TykTechnologies/tyk/apidef"
"github.com/TykTechnologies/tyk/config"
logger "github.com/TykTechnologies/tyk/log"
)
func TestJSVMLogs(t *testing.T) {
var buf bytes.Buffer
jsvm := JSVM{}
jsvm.Init(nil)
jsvm.Log = logrus.New()
jsvm.Log.Out = &buf
jsvm.Log.Formatter = new(prefixed.TextFormatter)
jsvm.RawLog = logrus.New()
jsvm.RawLog.Out = &buf
jsvm.RawLog.Formatter = new(logger.RawFormatter)
const in = `
log("foo")
log('{"x": "y"}')
rawlog("foo")
rawlog('{"x": "y"}')
`
// note how the logger leaves spaces at the end
want := []string{
`time=TIME level=info msg=foo type=log-msg `,
`time=TIME level=info msg="{\"x\": \"y\"}" type=log-msg `,
`foo`,
`{"x": "y"}`,
}
if _, err := jsvm.VM.Run(in); err != nil {
t.Fatalf("failed to run js: %v", err)
}
got := strings.Split(strings.Trim(buf.String(), "\n"), "\n")
i := 0
timeRe := regexp.MustCompile(`time="[^"]*"`)
for _, line := range got {
if i >= len(want) {
t.Logf("too many lines")
t.Fail()
break
}
s := timeRe.ReplaceAllString(line, "time=TIME")
if s != line && !strings.Contains(s, "type=log-msg") {
continue // log line from elsewhere (async)
}
if s != want[i] {
t.Logf("%s != %s", s, want[i])
t.Fail()
}
i++
}
}
func TestJSVMBody(t *testing.T) {
dynMid := &DynamicMiddleware{
BaseMiddleware: BaseMiddleware{
Spec: &APISpec{APIDefinition: &apidef.APIDefinition{}},
},
MiddlewareClassName: "leakMid",
Pre: true,
}
body := "foô \uffff \u0000 \xff bàr"
req := httptest.NewRequest("GET", "/foo", strings.NewReader(body))
jsvm := JSVM{}
jsvm.Init(nil)
const js = `
var leakMid = new TykJS.TykMiddleware.NewMiddleware({})
leakMid.NewProcessRequest(function(request, session) {
request.Body += " appended"
return leakMid.ReturnData(request, session.meta_data)
});`
if _, err := jsvm.VM.Run(js); err != nil {
t.Fatalf("failed to set up js plugin: %v", err)
}
dynMid.Spec.JSVM = jsvm
dynMid.ProcessRequest(nil, req, nil)
bs, err := ioutil.ReadAll(req.Body)
if err != nil {
t.Fatalf("failed to read final body: %v", err)
}
want := body + " appended"
if got := string(bs); want != got {
t.Fatalf("JS plugin broke non-UTF8 body %q into %q",
want, got)
}
}
func TestJSVMProcessTimeout(t *testing.T) {
dynMid := &DynamicMiddleware{
BaseMiddleware: BaseMiddleware{
Spec: &APISpec{APIDefinition: &apidef.APIDefinition{}},
},
MiddlewareClassName: "leakMid",
Pre: true,
}
req := httptest.NewRequest("GET", "/foo", strings.NewReader("body"))
jsvm := JSVM{}
jsvm.Init(nil)
jsvm.Timeout = time.Millisecond
// this js plugin just loops forever, keeping Otto at 100% CPU
// usage and running forever.
const js = `
var leakMid = new TykJS.TykMiddleware.NewMiddleware({})
leakMid.NewProcessRequest(function(request, session) {
while (true) {
}
return leakMid.ReturnData(request, session.meta_data)
});`
if _, err := jsvm.VM.Run(js); err != nil {
t.Fatalf("failed to set up js plugin: %v", err)
}
dynMid.Spec.JSVM = jsvm
done := make(chan bool)
go func() {
dynMid.ProcessRequest(nil, req, nil)
done <- true
}()
select {
case <-done:
case <-time.After(time.Second):
t.Fatal("js vm wasn't killed after its timeout")
}
}
func TestJSVMConfigData(t *testing.T) {
spec := &APISpec{APIDefinition: &apidef.APIDefinition{}}
spec.ConfigData = map[string]interface{}{
"foo": "bar",
}
const js = `
var testJSVMData = new TykJS.TykMiddleware.NewMiddleware({})
testJSVMData.NewProcessRequest(function(request, session, spec) {
request.SetHeaders["data-foo"] = spec.config_data.foo
return testJSVMData.ReturnData(request, {})
});`
dynMid := &DynamicMiddleware{
BaseMiddleware: BaseMiddleware{spec, nil},
MiddlewareClassName: "testJSVMData",
Pre: true,
}
jsvm := JSVM{}
jsvm.Init(nil)
if _, err := jsvm.VM.Run(js); err != nil {
t.Fatalf("failed to set up js plugin: %v", err)
}
dynMid.Spec.JSVM = jsvm
r := testReq(t, "GET", "/v1/test-data", nil)
dynMid.ProcessRequest(nil, r, nil)
if want, got := "bar", r.Header.Get("data-foo"); want != got {
t.Fatalf("wanted header to be %q, got %q", want, got)
}
}
func TestJSVMReturnOverridesFullResponse(t *testing.T) {
spec := &APISpec{APIDefinition: &apidef.APIDefinition{}}
spec.ConfigData = map[string]interface{}{
"foo": "bar",
}
const js = `
var testJSVMData = new TykJS.TykMiddleware.NewMiddleware({})
testJSVMData.NewProcessRequest(function(request, session, config) {
request.ReturnOverrides.ResponseError = "Foobarbaz"
request.ReturnOverrides.ResponseCode = 200
request.ReturnOverrides.ResponseHeaders = {
"X-Foo": "Bar",
"X-Baz": "Qux"
}
return testJSVMData.ReturnData(request, {})
});`
dynMid := &DynamicMiddleware{
BaseMiddleware: BaseMiddleware{spec, nil},
MiddlewareClassName: "testJSVMData",
Pre: true,
}
jsvm := JSVM{}
jsvm.Init(nil)
if _, err := jsvm.VM.Run(js); err != nil {
t.Fatalf("failed to set up js plugin: %v", err)
}
dynMid.Spec.JSVM = jsvm
rec := httptest.NewRecorder()
r := testReq(t, "GET", "/v1/test-data", nil)
dynMid.ProcessRequest(rec, r, nil)
wantBody := "Foobarbaz"
gotBody := rec.Body.String()
if wantBody != gotBody {
t.Fatalf("wanted body to be %q, got %q", wantBody, gotBody)
}
if want, got := "Bar", rec.HeaderMap.Get("x-foo"); got != want {
t.Fatalf("wanted header to be %q, got %q", want, got)
}
if want, got := "Qux", rec.HeaderMap.Get("x-baz"); got != want {
t.Fatalf("wanted header to be %q, got %q", want, got)
}
if want := 200; rec.Code != 200 {
t.Fatalf("wanted code to be %d, got %d", want, rec.Code)
}
}
func TestJSVMReturnOverridesError(t *testing.T) {
spec := &APISpec{APIDefinition: &apidef.APIDefinition{}}
spec.ConfigData = map[string]interface{}{
"foo": "bar",
}
const js = `
var testJSVMData = new TykJS.TykMiddleware.NewMiddleware({})
testJSVMData.NewProcessRequest(function(request, session, config) {
request.ReturnOverrides.ResponseError = "Foobarbaz"
request.ReturnOverrides.ResponseCode = 401
return testJSVMData.ReturnData(request, {})
});`
dynMid := &DynamicMiddleware{
BaseMiddleware: BaseMiddleware{spec, nil},
MiddlewareClassName: "testJSVMData",
Pre: true,
}
jsvm := JSVM{}
jsvm.Init(nil)
if _, err := jsvm.VM.Run(js); err != nil {
t.Fatalf("failed to set up js plugin: %v", err)
}
dynMid.Spec.JSVM = jsvm
r := testReq(t, "GET", "/v1/test-data", nil)
err, code := dynMid.ProcessRequest(nil, r, nil)
if want := 401; code != 401 {
t.Fatalf("wanted code to be %d, got %d", want, code)
}
wantBody := "Foobarbaz"
if !strings.Contains(err.Error(), wantBody) {
t.Fatalf("wanted body to contain to be %v, got %v", wantBody, err.Error())
}
}
func TestJSVMUserCore(t *testing.T) {
spec := &APISpec{APIDefinition: &apidef.APIDefinition{}}
const js = `
var testJSVMCore = new TykJS.TykMiddleware.NewMiddleware({})
testJSVMCore.NewProcessRequest(function(request, session, config) {
request.SetHeaders["global"] = globalVar
return testJSVMCore.ReturnData(request, {})
});`
dynMid := &DynamicMiddleware{
BaseMiddleware: BaseMiddleware{spec, nil},
MiddlewareClassName: "testJSVMCore",
Pre: true,
}
tfile, err := ioutil.TempFile("", "tykjs")
if err != nil {
t.Fatal(err)
}
if _, err := io.WriteString(tfile, `var globalVar = "globalValue"`); err != nil {
t.Fatal(err)
}
old := config.Global.TykJSPath
config.Global.TykJSPath = tfile.Name()
defer func() { config.Global.TykJSPath = old }()
jsvm := JSVM{}
jsvm.Init(nil)
if _, err := jsvm.VM.Run(js); err != nil {
t.Fatalf("failed to set up js plugin: %v", err)
}
dynMid.Spec.JSVM = jsvm
r := testReq(t, "GET", "/foo", nil)
dynMid.ProcessRequest(nil, r, nil)
if want, got := "globalValue", r.Header.Get("global"); want != got {
t.Fatalf("wanted header to be %q, got %q", want, got)
}
}