Simplify whl artifact autodetection code (#2371)

## Changes
- Get rid of artifacts.DetectPackages which is a thin wrapper around
artifacts/whl.DetectPackage
- Get rid of parsing name out of setup.py. Do not randomize either, use
a static one.

## Tests
Existing tests.

bundle/artifacts/autodetect.go

@@ -1,32 +0,0 @@
-package artifacts
-
-import (
-	"context"
-
-	"github.com/databricks/cli/bundle"
-	"github.com/databricks/cli/bundle/artifacts/whl"
-	"github.com/databricks/cli/libs/diag"
-	"github.com/databricks/cli/libs/log"
-)
-
-func DetectPackages() bundle.Mutator {
-	return &autodetect{}
-}
-
-type autodetect struct{}
-
-func (m *autodetect) Name() string {
-	return "artifacts.DetectPackages"
-}
-
-func (m *autodetect) Apply(ctx context.Context, b *bundle.Bundle) diag.Diagnostics {
-	// If artifacts section explicitly defined, do not try to auto detect packages
-	if b.Config.Artifacts != nil {
-		log.Debugf(ctx, "artifacts block is defined, skipping auto-detecting")
-		return nil
-	}
-
-	return bundle.Apply(ctx, b, bundle.Seq(
-		whl.DetectPackage(),
-	))
-}

bundle/artifacts/whl/autodetect.go

@@ -2,11 +2,8 @@ package whl
 
 import (
 	"context"
-	"fmt"
 	"os"
 	"path/filepath"
-	"regexp"
-	"time"
 
 	"github.com/databricks/cli/bundle"
 	"github.com/databricks/cli/bundle/config"
@@ -26,11 +23,17 @@ func (m *detectPkg) Name() string {
 }
 
 func (m *detectPkg) Apply(ctx context.Context, b *bundle.Bundle) diag.Diagnostics {
+	if b.Config.Artifacts != nil {
+		log.Debugf(ctx, "artifacts block is defined, skipping auto-detecting")
+		return nil
+	}
+
 	tasks := libraries.FindTasksWithLocalLibraries(b)
 	if len(tasks) == 0 {
 		log.Infof(ctx, "No local tasks in databricks.yml config, skipping auto detect")
 		return nil
 	}
+
 	log.Infof(ctx, "Detecting Python wheel project...")
 
 	// checking if there is setup.py in the bundle root
@@ -42,39 +45,18 @@ func (m *detectPkg) Apply(ctx context.Context, b *bundle.Bundle) diag.Diagnostic
 	}
 
 	log.Infof(ctx, "Found Python wheel project at %s", b.BundleRootPath)
-	module := extractModuleName(setupPy)
-
-	if b.Config.Artifacts == nil {
-		b.Config.Artifacts = make(map[string]*config.Artifact)
-	}
 
 	pkgPath, err := filepath.Abs(b.BundleRootPath)
 	if err != nil {
 		return diag.FromErr(err)
 	}
-	b.Config.Artifacts[module] = &config.Artifact{
+
+	b.Config.Artifacts = make(map[string]*config.Artifact)
+	b.Config.Artifacts["python_artifact"] = &config.Artifact{
 		Path: pkgPath,
 		Type: config.ArtifactPythonWheel,
+		// BuildCommand will be set by bundle/artifacts/whl/infer.go to "python3 setup.py bdist_wheel"
 	}
 
 	return nil
 }
-
-func extractModuleName(setupPy string) string {
-	bytes, err := os.ReadFile(setupPy)
-	if err != nil {
-		return randomName()
-	}
-
-	content := string(bytes)
-	r := regexp.MustCompile(`name=['"](.*)['"]`)
-	matches := r.FindStringSubmatch(content)
-	if len(matches) == 0 {
-		return randomName()
-	}
-	return matches[1]
-}
-
-func randomName() string {
-	return fmt.Sprintf("artifact%d", time.Now().Unix())
-}

bundle/artifacts/whl/autodetect_test.go

@@ -1,22 +0,0 @@
-package whl
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestExtractModuleName(t *testing.T) {
-	moduleName := extractModuleName("./testdata/setup.py")
-	assert.Equal(t, "my_test_code", moduleName)
-}
-
-func TestExtractModuleNameMinimal(t *testing.T) {
-	moduleName := extractModuleName("./testdata/setup_minimal.py")
-	assert.Equal(t, "my_test_code", moduleName)
-}
-
-func TestExtractModuleNameIncorrect(t *testing.T) {
-	moduleName := extractModuleName("./testdata/setup_incorrect.py")
-	assert.Contains(t, moduleName, "artifact")
-}

bundle/phases/build.go

@@ -3,6 +3,7 @@ package phases
 import (
 	"github.com/databricks/cli/bundle"
 	"github.com/databricks/cli/bundle/artifacts"
+	"github.com/databricks/cli/bundle/artifacts/whl"
 	"github.com/databricks/cli/bundle/config"
 	"github.com/databricks/cli/bundle/config/mutator"
 	"github.com/databricks/cli/bundle/scripts"
@@ -14,7 +15,7 @@ func Build() bundle.Mutator {
 		"build",
 		[]bundle.Mutator{
 			scripts.Execute(config.ScriptPreBuild),
-			artifacts.DetectPackages(),
+			whl.DetectPackage(),
 			artifacts.InferMissingProperties(),
 			artifacts.PrepareAll(),
 			artifacts.BuildAll(),

integration/bundle/testdata/default_python/bundle_deploy.txt

@@ -1,4 +1,4 @@
-Building project_name_$UNIQUE_PRJ...
+Building python_artifact...
 Uploading project_name_$UNIQUE_PRJ-0.0.1+[NUMID].[NUMID]-py3-none-any.whl...
 Uploading bundle files to /Workspace/Users/[USERNAME]/.bundle/project_name_$UNIQUE_PRJ/dev/files...
 Deploying resources...