Throttle the http client used in the automation tests so it we don't get

rate limited by Okta's API.

identity-engine/embedded-auth-with-sdk/config/config.go

@@ -16,6 +16,9 @@
 
 package config
 
+import "net/http"
+
 type Config struct {
-	Testing bool
+	Testing    bool
+	HttpClient *http.Client
 }

identity-engine/embedded-auth-with-sdk/harness/testing_harness.go

@@ -110,8 +110,11 @@ func NewTestHarness() *TestHarness {
 func (th *TestHarness) InitializeTestSuite(ctx *godog.TestSuiteContext) {
 	rand.Seed(time.Now().UnixNano())
 	ctx.BeforeSuite(func() {
+		httpClient := &http.Client{Timeout: time.Second * 30}
+		httpClient.Transport = &testThrottledTransport{}
 		cfg := &config.Config{
-			Testing: true,
+			Testing:    true,
+			HttpClient: httpClient,
 		}
 		_, client, err := okta.NewClient(
 			context.Background(),
@@ -134,6 +137,16 @@ func (th *TestHarness) InitializeTestSuite(ctx *godog.TestSuiteContext) {
 	})
 }
 
+type testThrottledTransport struct{}
+
+func (t *testThrottledTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	// Rapid concurrent connections that can be exhibited in an automated test
+	// harness can get rate limited.
+	// https://developer.okta.com/docs/reference/rl-additional-limits/
+	time.Sleep(time.Millisecond * 75)
+	return http.DefaultTransport.RoundTrip(req)
+}
+
 func (th *TestHarness) depopulateMary() {
 	users, _, _ := th.oktaClient.User.ListUsers(context.Background(), &query.Params{
 		Q:     "Mary",

identity-engine/embedded-auth-with-sdk/server/server.go

@@ -62,6 +62,14 @@ func NewServer(c *config.Config) *Server {
 		log.Fatalf("new client error: %+v", err)
 	}
 
+	// NOTE: The cucumber testing harness Okta uses to ensure the golang samples
+	// remain operational needs to be throttled so it doesn't get rate limited
+	// by too many concurrent requests in tests. The idx client allows the
+	// ability to set a custom http client and we make use of that feature here.
+	if c.HttpClient != nil {
+		idx = idx.WithHTTPClient(c.HttpClient)
+	}
+
 	return &Server{
 		config:    c,
 		idxClient: idx,