Add default value for `volume_type` for DABs

bundle/config/mutator/configure_volume_defaults.go

@@ -0,0 +1,44 @@
+package mutator
+
+import (
+	"context"
+
+	"github.com/databricks/cli/bundle"
+	"github.com/databricks/cli/libs/diag"
+	"github.com/databricks/cli/libs/dyn"
+)
+
+type configureVolumeDefaults struct{}
+
+func ConfigureVolumeDefaults() bundle.Mutator {
+	return &configureVolumeDefaults{}
+}
+
+func (m *configureVolumeDefaults) Name() string {
+	return "ConfigureVolumeDefaults"
+}
+
+func (m *configureVolumeDefaults) Apply(ctx context.Context, b *bundle.Bundle) diag.Diagnostics {
+	var diags diag.Diagnostics
+
+	pattern := dyn.NewPattern(
+		dyn.Key("resources"),
+		dyn.Key("volumes"),
+		dyn.AnyKey(),
+	)
+
+	// Configure defaults for all volumes.
+	err := b.Config.Mutate(func(v dyn.Value) (dyn.Value, error) {
+		return dyn.MapByPattern(v, pattern, func(p dyn.Path, v dyn.Value) (dyn.Value, error) {
+			var err error
+			v, err = setIfNotExists(v, dyn.NewPath(dyn.Key("volume_type")), dyn.V("MANAGED"))
+			if err != nil {
+				return dyn.InvalidValue, err
+			}
+			return v, nil
+		})
+	})
+
+	diags = diags.Extend(diag.FromErr(err))
+	return diags
+}

bundle/config/mutator/configure_volume_defaults_test.go

@@ -0,0 +1,75 @@
+package mutator_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/cli/bundle"
+	"github.com/databricks/cli/bundle/config"
+	"github.com/databricks/cli/bundle/config/mutator"
+	"github.com/databricks/cli/bundle/config/resources"
+	"github.com/databricks/cli/bundle/internal/bundletest"
+	"github.com/databricks/cli/libs/dyn"
+	"github.com/databricks/databricks-sdk-go/service/catalog"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestConfigureVolumeDefaultsVolumeType(t *testing.T) {
+	b := &bundle.Bundle{
+		Config: config.Root{
+			Resources: config.Resources{
+				Volumes: map[string]*resources.Volume{
+					"v1": {
+						// Empty string is skipped.
+						// See below for how it is set.
+						CreateVolumeRequestContent: &catalog.CreateVolumeRequestContent{
+							VolumeType: "",
+						},
+					},
+					"v2": {
+						// Non-empty string is skipped.
+						CreateVolumeRequestContent: &catalog.CreateVolumeRequestContent{
+							VolumeType: "already-set",
+						},
+					},
+					"v3": {
+						// No volume type set.
+					},
+					"v4": nil,
+				},
+			},
+		},
+	}
+
+	// We can't set an empty string in the typed configuration.
+	// Do it on the dyn.Value directly.
+	bundletest.Mutate(t, b, func(v dyn.Value) (dyn.Value, error) {
+		return dyn.Set(v, "resources.volumes.v1.volume_type", dyn.V(""))
+	})
+
+	diags := bundle.Apply(context.Background(), b, mutator.ConfigureVolumeDefaults())
+	require.NoError(t, diags.Error())
+
+	var v dyn.Value
+	var err error
+
+	// Set to empty string; unchanged.
+	v, err = dyn.Get(b.Config.Value(), "resources.volumes.v1.volume_type")
+	require.NoError(t, err)
+	assert.Equal(t, "", v.MustString())
+
+	// Set to non-empty string; unchanged.
+	v, err = dyn.Get(b.Config.Value(), "resources.volumes.v2.volume_type")
+	require.NoError(t, err)
+	assert.Equal(t, "already-set", v.MustString())
+
+	// Not set; set to default.
+	v, err = dyn.Get(b.Config.Value(), "resources.volumes.v3.volume_type")
+	require.NoError(t, err)
+	assert.Equal(t, "MANAGED", v.MustString())
+
+	// No valid volume; No change.
+	_, err = dyn.Get(b.Config.Value(), "resources.volumes.v4.volume_type")
+	assert.True(t, dyn.IsCannotTraverseNilError(err))
+}