Added transformation mutator for Python wheel task for them to work on DBR <13.1

bundle/config/mutator/trampoline.go

@@ -0,0 +1,95 @@
+package mutator
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path"
+	"path/filepath"
+	"text/template"
+
+	"github.com/databricks/cli/bundle"
+	"github.com/databricks/databricks-sdk-go/service/jobs"
+)
+
+type fnTemplateData func(task *jobs.Task) (map[string]any, error)
+type fnCleanUp func(task *jobs.Task)
+type fnTasks func(b *bundle.Bundle) []*jobs.Task
+
+type trampoline struct {
+	name         string
+	getTasks     fnTasks
+	templateData fnTemplateData
+	cleanUp      fnCleanUp
+	template     string
+}
+
+func NewTrampoline(
+	name string,
+	tasks fnTasks,
+	templateData fnTemplateData,
+	cleanUp fnCleanUp,
+	template string,
+) *trampoline {
+	return &trampoline{name, tasks, templateData, cleanUp, template}
+}
+
+func (m *trampoline) Name() string {
+	return fmt.Sprintf("trampoline(%s)", m.name)
+}
+
+func (m *trampoline) Apply(ctx context.Context, b *bundle.Bundle) error {
+	tasks := m.getTasks(b)
+	for _, task := range tasks {
+		err := m.generateNotebookWrapper(b, task)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (m *trampoline) generateNotebookWrapper(b *bundle.Bundle, task *jobs.Task) error {
+	internalDir, err := b.InternalDir()
+	if err != nil {
+		return err
+	}
+
+	notebookName := fmt.Sprintf("notebook_%s", task.TaskKey)
+	localNotebookPath := filepath.Join(internalDir, notebookName+".py")
+
+	err = os.MkdirAll(filepath.Dir(localNotebookPath), 0755)
+	if err != nil {
+		return err
+	}
+
+	f, err := os.Create(localNotebookPath)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	data, err := m.templateData(task)
+	if err != nil {
+		return err
+	}
+
+	t, err := template.New(notebookName).Parse(m.template)
+	if err != nil {
+		return err
+	}
+
+	internalDirRel, err := filepath.Rel(b.Config.Path, internalDir)
+	if err != nil {
+		return err
+	}
+
+	m.cleanUp(task)
+	remotePath := path.Join(b.Config.Workspace.FilesPath, filepath.ToSlash(internalDirRel), notebookName)
+
+	task.NotebookTask = &jobs.NotebookTask{
+		NotebookPath: remotePath,
+	}
+
+	return t.Execute(f, data)
+}

bundle/config/mutator/trampoline_test.go

@@ -0,0 +1,90 @@
+package mutator
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/databricks/cli/bundle"
+	"github.com/databricks/cli/bundle/config"
+	"github.com/databricks/cli/bundle/config/resources"
+	"github.com/databricks/databricks-sdk-go/service/jobs"
+	"github.com/stretchr/testify/require"
+)
+
+func getTasks(b *bundle.Bundle) []*jobs.Task {
+	tasks := make([]*jobs.Task, 0)
+	for k := range b.Config.Resources.Jobs["test"].Tasks {
+		tasks = append(tasks, &b.Config.Resources.Jobs["test"].Tasks[k])
+	}
+
+	return tasks
+}
+
+func templateData(task *jobs.Task) (map[string]any, error) {
+	if task.PythonWheelTask == nil {
+		return nil, fmt.Errorf("PythonWheelTask cannot be nil")
+	}
+
+	data := make(map[string]any)
+	data["MyName"] = "Trampoline"
+	return data, nil
+}
+
+func cleanUp(task *jobs.Task) {
+	task.PythonWheelTask = nil
+}
+
+func TestGenerateTrampoline(t *testing.T) {
+	tmpDir := t.TempDir()
+
+	tasks := []jobs.Task{
+		{
+			TaskKey: "to_trampoline",
+			PythonWheelTask: &jobs.PythonWheelTask{
+				PackageName: "test",
+				EntryPoint:  "run",
+			}},
+	}
+
+	b := &bundle.Bundle{
+		Config: config.Root{
+			Path: tmpDir,
+			Bundle: config.Bundle{
+				Target: "development",
+			},
+			Resources: config.Resources{
+				Jobs: map[string]*resources.Job{
+					"test": {
+						Paths: resources.Paths{
+							ConfigFilePath: tmpDir,
+						},
+						JobSettings: &jobs.JobSettings{
+							Tasks: tasks,
+						},
+					},
+				},
+			},
+		},
+	}
+	ctx := context.Background()
+
+	trampoline := NewTrampoline("test_trampoline", getTasks, templateData, cleanUp, "Hello from {{.MyName}}")
+	err := bundle.Apply(ctx, b, trampoline)
+	require.NoError(t, err)
+
+	dir, err := b.InternalDir()
+	require.NoError(t, err)
+	filename := filepath.Join(dir, "notebook_to_trampoline.py")
+
+	bytes, err := os.ReadFile(filename)
+	require.NoError(t, err)
+
+	require.Equal(t, "Hello from Trampoline", string(bytes))
+
+	task := b.Config.Resources.Jobs["test"].Tasks[0]
+	require.Equal(t, task.NotebookTask.NotebookPath, ".databricks/bundle/development/.internal/notebook_to_trampoline")
+	require.Nil(t, task.PythonWheelTask)
+}

bundle/phases/deploy.go

@@ -8,6 +8,7 @@ import (
 	"github.com/databricks/cli/bundle/deploy/lock"
 	"github.com/databricks/cli/bundle/deploy/terraform"
 	"github.com/databricks/cli/bundle/libraries"
+	"github.com/databricks/cli/bundle/python"
 )
 
 // The deploy phase deploys artifacts and resources.
@@ -17,10 +18,11 @@ func Deploy() bundle.Mutator {
 		bundle.Defer(
 			bundle.Seq(
 				mutator.ValidateGitDetails(),
-				files.Upload(),
 				libraries.MatchWithArtifacts(),
 				artifacts.CleanUp(),
 				artifacts.UploadAll(),
+				python.TransformWheelTask(),
+				files.Upload(),
 				terraform.Interpolate(),
 				terraform.Write(),
 				terraform.StatePull(),

bundle/python/transform.go

@@ -0,0 +1,85 @@
+package python
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/databricks/cli/bundle"
+	"github.com/databricks/cli/bundle/config/mutator"
+	"github.com/databricks/cli/bundle/libraries"
+	"github.com/databricks/databricks-sdk-go/service/jobs"
+)
+
+const NOTEBOOK_TEMPLATE = `# Databricks notebook source
+%python
+{{range .Libraries}}
+%pip install --force-reinstall {{.Whl}}
+{{end}}
+
+from contextlib import redirect_stdout
+import io
+import sys
+sys.argv = [{{.Params}}]
+
+import pkg_resources
+_func = pkg_resources.load_entry_point("{{.Task.PackageName}}", "console_scripts", "{{.Task.EntryPoint}}")
+
+f = io.StringIO()
+with redirect_stdout(f):
+	_func()
+s = f.getvalue()
+dbutils.notebook.exit(s)
+`
+
+// This mutator takes the wheel task and transforms it into notebook
+// which installs uploaded wheels using %pip and then calling corresponding
+// entry point.
+func TransformWheelTask() bundle.Mutator {
+	return mutator.NewTrampoline(
+		"python_wheel",
+		getTasks,
+		generateTemplateData,
+		cleanUpTask,
+		NOTEBOOK_TEMPLATE,
+	)
+}
+
+func getTasks(b *bundle.Bundle) []*jobs.Task {
+	return libraries.FindAllWheelTasks(b)
+}
+
+func generateTemplateData(task *jobs.Task) (map[string]any, error) {
+	params, err := generateParameters(task.PythonWheelTask)
+	if err != nil {
+		return nil, err
+	}
+
+	data := map[string]any{
+		"Libraries": task.Libraries,
+		"Params":    params,
+		"Task":      task.PythonWheelTask,
+	}
+
+	return data, nil
+}
+
+func generateParameters(task *jobs.PythonWheelTask) (string, error) {
+	if task.Parameters != nil && task.NamedParameters != nil {
+		return "", fmt.Errorf("not allowed to pass both paramaters and named_parameters")
+	}
+	params := append([]string{"python"}, task.Parameters...)
+	for k, v := range task.NamedParameters {
+		params = append(params, fmt.Sprintf("%s=%s", k, v))
+	}
+
+	for i := range params {
+		params[i] = strconv.Quote(params[i])
+	}
+	return strings.Join(params, ", "), nil
+}
+
+func cleanUpTask(task *jobs.Task) {
+	task.PythonWheelTask = nil
+	task.Libraries = nil
+}

bundle/python/transform_test.go

@@ -0,0 +1,57 @@
+package python
+
+import (
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/service/jobs"
+	"github.com/stretchr/testify/require"
+)
+
+type testCase struct {
+	Actual   []string
+	Expected string
+}
+type NamedParams map[string]string
+type testCaseNamed struct {
+	Actual   NamedParams
+	Expected string
+}
+
+var paramsTestCases []testCase = []testCase{
+	{[]string{}, `"python"`},
+	{[]string{"a"}, `"python", "a"`},
+	{[]string{"a", "b"}, `"python", "a", "b"`},
+	{[]string{"123!@#$%^&*()-="}, `"python", "123!@#$%^&*()-="`},
+	{[]string{`{"a": 1}`}, `"python", "{\"a\": 1}"`},
+}
+
+var paramsTestCasesNamed []testCaseNamed = []testCaseNamed{
+	{NamedParams{}, `"python"`},
+	{NamedParams{"a": "1"}, `"python", "a=1"`},
+	{NamedParams{"a": "1", "b": "2"}, `"python", "a=1", "b=2"`},
+	{NamedParams{"data": `{"a": 1}`}, `"python", "data={\"a\": 1}"`},
+}
+
+func TestGenerateParameters(t *testing.T) {
+	for _, c := range paramsTestCases {
+		task := &jobs.PythonWheelTask{Parameters: c.Actual}
+		result, err := generateParameters(task)
+		require.NoError(t, err)
+		require.Equal(t, c.Expected, result)
+	}
+}
+
+func TestGenerateNamedParameters(t *testing.T) {
+	for _, c := range paramsTestCasesNamed {
+		task := &jobs.PythonWheelTask{NamedParameters: c.Actual}
+		result, err := generateParameters(task)
+		require.NoError(t, err)
+		require.Equal(t, c.Expected, result)
+	}
+}
+
+func TestGenerateBoth(t *testing.T) {
+	task := &jobs.PythonWheelTask{NamedParameters: map[string]string{"a": "1"}, Parameters: []string{"b"}}
+	_, err := generateParameters(task)
+	require.Error(t, err)
+}