added dd binding

cleanup

updated dd binding

added etag bypass

added dd test

workers.go

@@ -67,11 +67,12 @@ type WorkerScript struct {
 
 // WorkerMetaData contains worker script information such as size, creation & modification dates.
 type WorkerMetaData struct {
-	ID         string    `json:"id,omitempty"`
-	ETAG       string    `json:"etag,omitempty"`
-	Size       int       `json:"size,omitempty"`
-	CreatedOn  time.Time `json:"created_on,omitempty"`
-	ModifiedOn time.Time `json:"modified_on,omitempty"`
+	ID          string    `json:"id,omitempty"`
+	ETAG        string    `json:"etag,omitempty"`
+	ETAG_BYPASS string    `json:"etag_bypass,omitempty"`
+	Size        int       `json:"size,omitempty"`
+	CreatedOn   time.Time `json:"created_on,omitempty"`
+	ModifiedOn  time.Time `json:"modified_on,omitempty"`
 }
 
 // WorkerListResponse wrapper struct for API response to worker script list API call.
@@ -106,6 +107,8 @@ const (
 	WorkerPlainTextBindingType WorkerBindingType = "plain_text"
 	// WorkerServiceBindingType is the type for worker service bindings.
 	WorkerServiceBindingType WorkerBindingType = "service"
+	// WorkerDynamicDispatchBindingType is the type for dynamic dispatch bindings.
+	WorkerDynamicDispatchBindingType WorkerBindingType = "dynamic_dispatch"
 )
 
 // WorkerBindingListItem a struct representing an individual binding in a list of bindings.
@@ -304,6 +307,27 @@ func (b WorkerServiceBinding) serialize(bindingName string) (workerBindingMeta,
 	}, nil, nil
 }
 
+// WorkerDynamicDispatchBinding is a binding to a dispatcher than can dispatch another Worker
+//
+// https://developers.cloudflare.com/workers/tooling/api/scripts/#add-a-plain-text-binding
+type WorkerDynamicDispatchBinding struct{}
+
+// Type returns the type of the binding.
+func (b WorkerDynamicDispatchBinding) Type() WorkerBindingType {
+	return WorkerDynamicDispatchBindingType
+}
+
+func (b WorkerDynamicDispatchBinding) serialize(bindingName string) (workerBindingMeta, workerBindingBodyWriter, error) {
+	if bindingName == "" {
+		return nil, nil, errors.Errorf(`Name for Dynamic Dispatch binding "%s" cannot be empty`, bindingName)
+	}
+
+	return workerBindingMeta{
+		"name": bindingName,
+		"type": b.Type(),
+	}, nil, nil
+}
+
 // Each binding that adds a part to the multipart form body will need
 // a unique part name so we just generate a random 128bit hex string.
 func getRandomPartName() string {

workers_test.go

@@ -752,6 +752,40 @@ func TestWorkers_UploadWorkerWithCompatibilityFlags(t *testing.T) {
 	assert.NoError(t, err)
 }
 
+func TestWorkers_UploadWorkerWithDynamicDispatch(t *testing.T) {
+	setup(UsingAccount("foo"))
+	defer teardown()
+
+	handler := func(w http.ResponseWriter, r *http.Request) {
+		assert.Equal(t, http.MethodPut, r.Method, "Expected method 'PUT', got %s", r.Method)
+
+		mpUpload, err := parseMultipartUpload(r)
+		assert.NoError(t, err)
+
+		expectedBindings := map[string]workerBindingMeta{
+			"b1": {
+				"type": "dynamic_dispatch",
+				"name": "b1",
+			},
+		}
+		assert.Equal(t, workerScript, mpUpload.Script)
+		assert.Equal(t, expectedBindings, mpUpload.BindingMeta)
+
+		w.Header().Set("content-type", "application/json")
+		fmt.Fprintf(w, uploadWorkerResponseData) //nolint
+	}
+	mux.HandleFunc("/accounts/foo/workers/scripts/bar", handler)
+
+	scriptParams := WorkerScriptParams{
+		Script: workerScript,
+		Bindings: map[string]WorkerBinding{
+			"b1": WorkerDynamicDispatchBinding{},
+		},
+	}
+	_, err := client.UploadWorkerWithBindings(context.Background(), &WorkerRequestParams{ScriptName: "bar"}, &scriptParams)
+	assert.NoError(t, err)
+}
+
 func TestWorkers_CreateWorkerRoute(t *testing.T) {
 	setup()
 	defer teardown()