Support lookup by name of notification destinations

## Changes

While looking into adding variable lookups for notification destinations
([API][API]), I found the codegen approach for different classes of
variable lookups a bit complex. The template had a custom field override
(for service principals), the package had an override for the cluster
lookup, and it didn't produce tests.

The notification destinations API uses a default page size of 20 for
listing. I want to use a larger page size to limit the number of API
calls, so that would imply another customization on the template or a
manual override.

This code being rather mechanical, I used copilot to produce all
instances of the resolvers and their tests (after writing one of them
manually).

[api]: https://docs.databricks.com/api/workspace/notificationdestinations

## Tests

* Unit tests pass
* Manual confirmation that lookups of warehouses still work

.codegen.json

@@ -5,8 +5,7 @@
     },
     "batch": {
         ".codegen/cmds-workspace.go.tmpl": "cmd/workspace/cmd.go",
-        ".codegen/cmds-account.go.tmpl": "cmd/account/cmd.go",
+        ".codegen/cmds-account.go.tmpl": "cmd/account/cmd.go"
-        ".codegen/lookup.go.tmpl": "bundle/config/variable/lookup.go"
     },
     "toolchain": {
         "required": ["go"],

.codegen/lookup.go.tmpl

@@ -1,134 +0,0 @@
-// Code generated from OpenAPI specs by Databricks SDK Generator. DO NOT EDIT.
-
-package variable
-
-{{ $allowlist :=
-	list
-		"alerts"
-		"clusters"
-		"cluster-policies"
-		"clusters"
-		"dashboards"
-		"instance-pools"
-		"jobs"
-		"metastores"
-		"pipelines"
-		"service-principals"
-		"queries"
-		"warehouses"
-}}
-
-{{	$customField :=
-		dict
-			"service-principals" "ApplicationId"
-}}
-
-import (
-	"context"
-	"fmt"
-
-	"github.com/databricks/databricks-sdk-go"
-)
-
-type Lookup struct {
-	{{range .Services -}}
-	{{- if in $allowlist .KebabName -}}
-	{{.Singular.PascalName}} string `json:"{{.Singular.SnakeName}},omitempty"`
-
-	{{end}}
-	{{- end}}
-}
-
-func LookupFromMap(m map[string]any) *Lookup {
-	l := &Lookup{}
-	{{range .Services -}}
-	{{- if in $allowlist .KebabName -}}
-	if v, ok := m["{{.Singular.SnakeName}}"]; ok {
-		l.{{.Singular.PascalName}} = v.(string)
-	}
-	{{end -}}
-	{{- end}}
-	return l
-}
-
-func (l *Lookup) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
-	if err := l.validate(); err != nil {
-		return "", err
-	}
-
-	r := allResolvers()
-	{{range .Services -}}
-	{{- if in $allowlist .KebabName -}}
-	if l.{{.Singular.PascalName}} != "" {
-		return r.{{.Singular.PascalName}}(ctx, w, l.{{.Singular.PascalName}})
-	}
-	{{end -}}
-	{{- end}}
-
-	return "", fmt.Errorf("no valid lookup fields provided")
-}
-
-func (l *Lookup) String() string {
-	{{range .Services -}}
-	{{- if in $allowlist .KebabName -}}
-	if l.{{.Singular.PascalName}} != "" {
-		return fmt.Sprintf("{{.Singular.KebabName}}: %s", l.{{.Singular.PascalName}})
-	}
-	{{end -}}
-	{{- end}}
-	return ""
-}
-
-func (l *Lookup) validate() error {
-	// Validate that only one field is set
-	count := 0
-	{{range .Services -}}
-	{{- if in $allowlist .KebabName -}}
-	if l.{{.Singular.PascalName}} != "" {
-		count++
-	}
-	{{end -}}
-	{{- end}}
-
-	if count != 1 {
-		return fmt.Errorf("exactly one lookup field must be provided")
-	}
-
-	if strings.Contains(l.String(), "${var") {
-		return fmt.Errorf("lookup fields cannot contain variable references")
-	}
-
-	return nil
-}
-
-
-type resolverFunc func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error)
-type resolvers struct {
-	{{range .Services -}}
-	{{- if in $allowlist .KebabName -}}
-	{{.Singular.PascalName}} resolverFunc
-	{{end -}}
-	{{- end}}
-}
-
-func allResolvers() *resolvers {
-	r := &resolvers{}
-	{{range .Services -}}
-	{{- if in $allowlist .KebabName -}}
-	r.{{.Singular.PascalName}} = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["{{.Singular.PascalName}}"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.{{.PascalName}}.GetBy{{range .NamedIdMap.NamePath}}{{.PascalName}}{{end}}(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.{{ getOrDefault $customField .KebabName ((index .NamedIdMap.IdPath 0).PascalName) }}), nil
-	}
-	{{end -}}
-	{{- end}}
-
-	return r
-}

.gitattributes

@@ -1,4 +1,3 @@
-bundle/config/variable/lookup.go linguist-generated=true
 cmd/account/access-control/access-control.go linguist-generated=true
 cmd/account/billable-usage/billable-usage.go linguist-generated=true
 cmd/account/budgets/budgets.go linguist-generated=true

bundle/config/variable/lookup.go

@@ -1,11 +1,8 @@
-// Code generated from OpenAPI specs by Databricks SDK Generator. DO NOT EDIT.
-
 package variable
 
 import (
 	"context"
 	"fmt"
-	"strings"
 
 	"github.com/databricks/databricks-sdk-go"
 )
@@ -25,6 +22,8 @@ type Lookup struct {
 
 	Metastore string `json:"metastore,omitempty"`
 
+	NotificationDestination string `json:"notification_destination,omitempty"`
+
 	Pipeline string `json:"pipeline,omitempty"`
 
 	Query string `json:"query,omitempty"`
@@ -34,323 +33,78 @@ type Lookup struct {
 	Warehouse string `json:"warehouse,omitempty"`
 }
 
-func LookupFromMap(m map[string]any) *Lookup {
+type resolver interface {
-	l := &Lookup{}
+	// Resolve resolves the underlying entity's ID.
-	if v, ok := m["alert"]; ok {
+	Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error)
-		l.Alert = v.(string)
+
+	// String returns a human-readable representation of the resolver.
+	String() string
+}
+
+func (l *Lookup) constructResolver() (resolver, error) {
+	var resolvers []resolver
+
+	if l.Alert != "" {
+		resolvers = append(resolvers, resolveAlert{name: l.Alert})
 	}
-	if v, ok := m["cluster_policy"]; ok {
+	if l.ClusterPolicy != "" {
-		l.ClusterPolicy = v.(string)
+		resolvers = append(resolvers, resolveClusterPolicy{name: l.ClusterPolicy})
 	}
-	if v, ok := m["cluster"]; ok {
+	if l.Cluster != "" {
-		l.Cluster = v.(string)
+		resolvers = append(resolvers, resolveCluster{name: l.Cluster})
 	}
-	if v, ok := m["dashboard"]; ok {
+	if l.Dashboard != "" {
-		l.Dashboard = v.(string)
+		resolvers = append(resolvers, resolveDashboard{name: l.Dashboard})
 	}
-	if v, ok := m["instance_pool"]; ok {
+	if l.InstancePool != "" {
-		l.InstancePool = v.(string)
+		resolvers = append(resolvers, resolveInstancePool{name: l.InstancePool})
 	}
-	if v, ok := m["job"]; ok {
+	if l.Job != "" {
-		l.Job = v.(string)
+		resolvers = append(resolvers, resolveJob{name: l.Job})
 	}
-	if v, ok := m["metastore"]; ok {
+	if l.Metastore != "" {
-		l.Metastore = v.(string)
+		resolvers = append(resolvers, resolveMetastore{name: l.Metastore})
 	}
-	if v, ok := m["pipeline"]; ok {
+	if l.NotificationDestination != "" {
-		l.Pipeline = v.(string)
+		resolvers = append(resolvers, resolveNotificationDestination{name: l.NotificationDestination})
 	}
-	if v, ok := m["query"]; ok {
+	if l.Pipeline != "" {
-		l.Query = v.(string)
+		resolvers = append(resolvers, resolvePipeline{name: l.Pipeline})
 	}
-	if v, ok := m["service_principal"]; ok {
+	if l.Query != "" {
-		l.ServicePrincipal = v.(string)
+		resolvers = append(resolvers, resolveQuery{name: l.Query})
 	}
-	if v, ok := m["warehouse"]; ok {
+	if l.ServicePrincipal != "" {
-		l.Warehouse = v.(string)
+		resolvers = append(resolvers, resolveServicePrincipal{name: l.ServicePrincipal})
+	}
+	if l.Warehouse != "" {
+		resolvers = append(resolvers, resolveWarehouse{name: l.Warehouse})
 	}
 
-	return l
+	switch len(resolvers) {
+	case 0:
+		return nil, fmt.Errorf("no valid lookup fields provided")
+	case 1:
+		return resolvers[0], nil
+	default:
+		return nil, fmt.Errorf("exactly one lookup field must be provided")
+	}
 }
 
 func (l *Lookup) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
-	if err := l.validate(); err != nil {
+	r, err := l.constructResolver()
+	if err != nil {
 		return "", err
 	}
 
-	r := allResolvers()
+	return r.Resolve(ctx, w)
-	if l.Alert != "" {
-		return r.Alert(ctx, w, l.Alert)
-	}
-	if l.ClusterPolicy != "" {
-		return r.ClusterPolicy(ctx, w, l.ClusterPolicy)
-	}
-	if l.Cluster != "" {
-		return r.Cluster(ctx, w, l.Cluster)
-	}
-	if l.Dashboard != "" {
-		return r.Dashboard(ctx, w, l.Dashboard)
-	}
-	if l.InstancePool != "" {
-		return r.InstancePool(ctx, w, l.InstancePool)
-	}
-	if l.Job != "" {
-		return r.Job(ctx, w, l.Job)
-	}
-	if l.Metastore != "" {
-		return r.Metastore(ctx, w, l.Metastore)
-	}
-	if l.Pipeline != "" {
-		return r.Pipeline(ctx, w, l.Pipeline)
-	}
-	if l.Query != "" {
-		return r.Query(ctx, w, l.Query)
-	}
-	if l.ServicePrincipal != "" {
-		return r.ServicePrincipal(ctx, w, l.ServicePrincipal)
-	}
-	if l.Warehouse != "" {
-		return r.Warehouse(ctx, w, l.Warehouse)
-	}
-
-	return "", fmt.Errorf("no valid lookup fields provided")
 }
 
 func (l *Lookup) String() string {
-	if l.Alert != "" {
+	r, _ := l.constructResolver()
-		return fmt.Sprintf("alert: %s", l.Alert)
+	if r == nil {
-	}
-	if l.ClusterPolicy != "" {
-		return fmt.Sprintf("cluster-policy: %s", l.ClusterPolicy)
-	}
-	if l.Cluster != "" {
-		return fmt.Sprintf("cluster: %s", l.Cluster)
-	}
-	if l.Dashboard != "" {
-		return fmt.Sprintf("dashboard: %s", l.Dashboard)
-	}
-	if l.InstancePool != "" {
-		return fmt.Sprintf("instance-pool: %s", l.InstancePool)
-	}
-	if l.Job != "" {
-		return fmt.Sprintf("job: %s", l.Job)
-	}
-	if l.Metastore != "" {
-		return fmt.Sprintf("metastore: %s", l.Metastore)
-	}
-	if l.Pipeline != "" {
-		return fmt.Sprintf("pipeline: %s", l.Pipeline)
-	}
-	if l.Query != "" {
-		return fmt.Sprintf("query: %s", l.Query)
-	}
-	if l.ServicePrincipal != "" {
-		return fmt.Sprintf("service-principal: %s", l.ServicePrincipal)
-	}
-	if l.Warehouse != "" {
-		return fmt.Sprintf("warehouse: %s", l.Warehouse)
-	}
-
 		return ""
-}
+	}
-
+
-func (l *Lookup) validate() error {
+	return r.String()
-	// Validate that only one field is set
-	count := 0
-	if l.Alert != "" {
-		count++
-	}
-	if l.ClusterPolicy != "" {
-		count++
-	}
-	if l.Cluster != "" {
-		count++
-	}
-	if l.Dashboard != "" {
-		count++
-	}
-	if l.InstancePool != "" {
-		count++
-	}
-	if l.Job != "" {
-		count++
-	}
-	if l.Metastore != "" {
-		count++
-	}
-	if l.Pipeline != "" {
-		count++
-	}
-	if l.Query != "" {
-		count++
-	}
-	if l.ServicePrincipal != "" {
-		count++
-	}
-	if l.Warehouse != "" {
-		count++
-	}
-
-	if count != 1 {
-		return fmt.Errorf("exactly one lookup field must be provided")
-	}
-
-	if strings.Contains(l.String(), "${var") {
-		return fmt.Errorf("lookup fields cannot contain variable references")
-	}
-
-	return nil
-}
-
-type resolverFunc func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error)
-type resolvers struct {
-	Alert            resolverFunc
-	ClusterPolicy    resolverFunc
-	Cluster          resolverFunc
-	Dashboard        resolverFunc
-	InstancePool     resolverFunc
-	Job              resolverFunc
-	Metastore        resolverFunc
-	Pipeline         resolverFunc
-	Query            resolverFunc
-	ServicePrincipal resolverFunc
-	Warehouse        resolverFunc
-}
-
-func allResolvers() *resolvers {
-	r := &resolvers{}
-	r.Alert = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["Alert"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.Alerts.GetByDisplayName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.Id), nil
-	}
-	r.ClusterPolicy = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["ClusterPolicy"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.ClusterPolicies.GetByName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.PolicyId), nil
-	}
-	r.Cluster = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["Cluster"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.Clusters.GetByClusterName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.ClusterId), nil
-	}
-	r.Dashboard = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["Dashboard"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.Dashboards.GetByName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.Id), nil
-	}
-	r.InstancePool = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["InstancePool"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.InstancePools.GetByInstancePoolName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.InstancePoolId), nil
-	}
-	r.Job = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["Job"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.Jobs.GetBySettingsName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.JobId), nil
-	}
-	r.Metastore = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["Metastore"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.Metastores.GetByName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.MetastoreId), nil
-	}
-	r.Pipeline = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["Pipeline"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.Pipelines.GetByName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.PipelineId), nil
-	}
-	r.Query = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["Query"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.Queries.GetByDisplayName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.Id), nil
-	}
-	r.ServicePrincipal = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["ServicePrincipal"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.ServicePrincipals.GetByDisplayName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.ApplicationId), nil
-	}
-	r.Warehouse = func(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
-		fn, ok := lookupOverrides["Warehouse"]
-		if ok {
-			return fn(ctx, w, name)
-		}
-		entity, err := w.Warehouses.GetByName(ctx, name)
-		if err != nil {
-			return "", err
-		}
-
-		return fmt.Sprint(entity.Id), nil
-	}
-
-	return r
 }

bundle/config/variable/lookup_test.go

@@ -0,0 +1,60 @@
+package variable
+
+import (
+	"context"
+	"reflect"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestLookup_Coverage(t *testing.T) {
+	var lookup Lookup
+	val := reflect.ValueOf(lookup)
+	typ := val.Type()
+
+	for i := 0; i < val.NumField(); i++ {
+		field := val.Field(i)
+		if field.Kind() != reflect.String {
+			t.Fatalf("Field %s is not a string", typ.Field(i).Name)
+		}
+
+		fieldType := typ.Field(i)
+		t.Run(fieldType.Name, func(t *testing.T) {
+			// Use a fresh instance of the struct in each test
+			var lookup Lookup
+
+			// Set the field to a non-empty string
+			reflect.ValueOf(&lookup).Elem().Field(i).SetString("value")
+
+			// Test the [String] function
+			assert.NotEmpty(t, lookup.String())
+		})
+	}
+}
+
+func TestLookup_Empty(t *testing.T) {
+	var lookup Lookup
+
+	// Resolve returns an error when no fields are provided
+	_, err := lookup.Resolve(context.Background(), nil)
+	assert.ErrorContains(t, err, "no valid lookup fields provided")
+
+	// No string representation for an invalid lookup
+	assert.Empty(t, lookup.String())
+
+}
+
+func TestLookup_Multiple(t *testing.T) {
+	lookup := Lookup{
+		Alert: "alert",
+		Query: "query",
+	}
+
+	// Resolve returns an error when multiple fields are provided
+	_, err := lookup.Resolve(context.Background(), nil)
+	assert.ErrorContains(t, err, "exactly one lookup field must be provided")
+
+	// No string representation for an invalid lookup
+	assert.Empty(t, lookup.String())
+}

bundle/config/variable/resolve_alert.go

@@ -0,0 +1,24 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+)
+
+type resolveAlert struct {
+	name string
+}
+
+func (l resolveAlert) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	entity, err := w.Alerts.GetByDisplayName(ctx, l.name)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprint(entity.Id), nil
+}
+
+func (l resolveAlert) String() string {
+	return fmt.Sprintf("alert: %s", l.name)
+}

bundle/config/variable/resolve_alert_test.go

@@ -0,0 +1,49 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/sql"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveAlert_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockAlertsAPI()
+	api.EXPECT().
+		GetByDisplayName(mock.Anything, "alert").
+		Return(&sql.ListAlertsResponseAlert{
+			Id: "1234",
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveAlert{name: "alert"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "1234", result)
+}
+
+func TestResolveAlert_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockAlertsAPI()
+	api.EXPECT().
+		GetByDisplayName(mock.Anything, "alert").
+		Return(nil, &apierr.APIError{StatusCode: 404})
+
+	ctx := context.Background()
+	l := resolveAlert{name: "alert"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.ErrorIs(t, err, apierr.ErrNotFound)
+}
+
+func TestResolveAlert_String(t *testing.T) {
+	l := resolveAlert{name: "name"}
+	assert.Equal(t, "alert: name", l.String())
+}

bundle/config/variable/resolve_cluster.go

@@ -8,13 +8,13 @@ import (
 	"github.com/databricks/databricks-sdk-go/service/compute"
 )
 
-var lookupOverrides = map[string]resolverFunc{
+type resolveCluster struct {
-	"Cluster": resolveCluster,
+	name string
 }
 
 // We added a custom resolver for the cluster to add filtering for the cluster source when we list all clusters.
 // Without the filtering listing could take a very long time (5-10 mins) which leads to lookup timeouts.
-func resolveCluster(ctx context.Context, w *databricks.WorkspaceClient, name string) (string, error) {
+func (l resolveCluster) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
 	result, err := w.Clusters.ListAll(ctx, compute.ListClustersRequest{
 		FilterBy: &compute.ListClustersFilterBy{
 			ClusterSources: []compute.ClusterSource{compute.ClusterSourceApi, compute.ClusterSourceUi},
@@ -30,6 +30,8 @@ func resolveCluster(ctx context.Context, w *databricks.WorkspaceClient, name str
 		key := v.ClusterName
 		tmp[key] = append(tmp[key], v)
 	}
+
+	name := l.name
 	alternatives, ok := tmp[name]
 	if !ok || len(alternatives) == 0 {
 		return "", fmt.Errorf("cluster named '%s' does not exist", name)
@@ -39,3 +41,7 @@ func resolveCluster(ctx context.Context, w *databricks.WorkspaceClient, name str
 	}
 	return alternatives[0].ClusterId, nil
 }
+
+func (l resolveCluster) String() string {
+	return fmt.Sprintf("cluster: %s", l.name)
+}

bundle/config/variable/resolve_cluster_policy.go

@@ -0,0 +1,24 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+)
+
+type resolveClusterPolicy struct {
+	name string
+}
+
+func (l resolveClusterPolicy) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	entity, err := w.ClusterPolicies.GetByName(ctx, l.name)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprint(entity.PolicyId), nil
+}
+
+func (l resolveClusterPolicy) String() string {
+	return fmt.Sprintf("cluster-policy: %s", l.name)
+}

bundle/config/variable/resolve_cluster_policy_test.go

@@ -0,0 +1,49 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/compute"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveClusterPolicy_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockClusterPoliciesAPI()
+	api.EXPECT().
+		GetByName(mock.Anything, "policy").
+		Return(&compute.Policy{
+			PolicyId: "1234",
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveClusterPolicy{name: "policy"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "1234", result)
+}
+
+func TestResolveClusterPolicy_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockClusterPoliciesAPI()
+	api.EXPECT().
+		GetByName(mock.Anything, "policy").
+		Return(nil, &apierr.APIError{StatusCode: 404})
+
+	ctx := context.Background()
+	l := resolveClusterPolicy{name: "policy"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.ErrorIs(t, err, apierr.ErrNotFound)
+}
+
+func TestResolveClusterPolicy_String(t *testing.T) {
+	l := resolveClusterPolicy{name: "name"}
+	assert.Equal(t, "cluster-policy: name", l.String())
+}

bundle/config/variable/resolve_cluster_test.go

@@ -0,0 +1,50 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/compute"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveCluster_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockClustersAPI()
+	api.EXPECT().
+		ListAll(mock.Anything, mock.Anything).
+		Return([]compute.ClusterDetails{
+			{ClusterId: "1234", ClusterName: "cluster1"},
+			{ClusterId: "2345", ClusterName: "cluster2"},
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveCluster{name: "cluster2"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "2345", result)
+}
+
+func TestResolveCluster_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockClustersAPI()
+	api.EXPECT().
+		ListAll(mock.Anything, mock.Anything).
+		Return([]compute.ClusterDetails{}, nil)
+
+	ctx := context.Background()
+	l := resolveCluster{name: "cluster"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.Error(t, err)
+	assert.Contains(t, err.Error(), "cluster named 'cluster' does not exist")
+}
+
+func TestResolveCluster_String(t *testing.T) {
+	l := resolveCluster{name: "name"}
+	assert.Equal(t, "cluster: name", l.String())
+}

bundle/config/variable/resolve_dashboard.go

@@ -0,0 +1,24 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+)
+
+type resolveDashboard struct {
+	name string
+}
+
+func (l resolveDashboard) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	entity, err := w.Dashboards.GetByName(ctx, l.name)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprint(entity.Id), nil
+}
+
+func (l resolveDashboard) String() string {
+	return fmt.Sprintf("dashboard: %s", l.name)
+}

bundle/config/variable/resolve_dashboard_test.go

@@ -0,0 +1,49 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/sql"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveDashboard_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockDashboardsAPI()
+	api.EXPECT().
+		GetByName(mock.Anything, "dashboard").
+		Return(&sql.Dashboard{
+			Id: "1234",
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveDashboard{name: "dashboard"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "1234", result)
+}
+
+func TestResolveDashboard_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockDashboardsAPI()
+	api.EXPECT().
+		GetByName(mock.Anything, "dashboard").
+		Return(nil, &apierr.APIError{StatusCode: 404})
+
+	ctx := context.Background()
+	l := resolveDashboard{name: "dashboard"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.ErrorIs(t, err, apierr.ErrNotFound)
+}
+
+func TestResolveDashboard_String(t *testing.T) {
+	l := resolveDashboard{name: "name"}
+	assert.Equal(t, "dashboard: name", l.String())
+}

bundle/config/variable/resolve_instance_pool.go

@@ -0,0 +1,24 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+)
+
+type resolveInstancePool struct {
+	name string
+}
+
+func (l resolveInstancePool) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	entity, err := w.InstancePools.GetByInstancePoolName(ctx, l.name)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprint(entity.InstancePoolId), nil
+}
+
+func (l resolveInstancePool) String() string {
+	return fmt.Sprintf("instance-pool: %s", l.name)
+}

bundle/config/variable/resolve_instance_pool_test.go

@@ -0,0 +1,49 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/compute"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveInstancePool_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockInstancePoolsAPI()
+	api.EXPECT().
+		GetByInstancePoolName(mock.Anything, "instance_pool").
+		Return(&compute.InstancePoolAndStats{
+			InstancePoolId: "5678",
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveInstancePool{name: "instance_pool"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "5678", result)
+}
+
+func TestResolveInstancePool_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockInstancePoolsAPI()
+	api.EXPECT().
+		GetByInstancePoolName(mock.Anything, "instance_pool").
+		Return(nil, &apierr.APIError{StatusCode: 404})
+
+	ctx := context.Background()
+	l := resolveInstancePool{name: "instance_pool"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.ErrorIs(t, err, apierr.ErrNotFound)
+}
+
+func TestResolveInstancePool_String(t *testing.T) {
+	l := resolveInstancePool{name: "name"}
+	assert.Equal(t, "instance-pool: name", l.String())
+}

bundle/config/variable/resolve_job.go

@@ -0,0 +1,24 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+)
+
+type resolveJob struct {
+	name string
+}
+
+func (l resolveJob) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	entity, err := w.Jobs.GetBySettingsName(ctx, l.name)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprint(entity.JobId), nil
+}
+
+func (l resolveJob) String() string {
+	return fmt.Sprintf("job: %s", l.name)
+}

bundle/config/variable/resolve_job_test.go

@@ -0,0 +1,49 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/jobs"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveJob_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockJobsAPI()
+	api.EXPECT().
+		GetBySettingsName(mock.Anything, "job").
+		Return(&jobs.BaseJob{
+			JobId: 5678,
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveJob{name: "job"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "5678", result)
+}
+
+func TestResolveJob_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockJobsAPI()
+	api.EXPECT().
+		GetBySettingsName(mock.Anything, "job").
+		Return(nil, &apierr.APIError{StatusCode: 404})
+
+	ctx := context.Background()
+	l := resolveJob{name: "job"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.ErrorIs(t, err, apierr.ErrNotFound)
+}
+
+func TestResolveJob_String(t *testing.T) {
+	l := resolveJob{name: "name"}
+	assert.Equal(t, "job: name", l.String())
+}

bundle/config/variable/resolve_metastore.go

@@ -0,0 +1,24 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+)
+
+type resolveMetastore struct {
+	name string
+}
+
+func (l resolveMetastore) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	entity, err := w.Metastores.GetByName(ctx, l.name)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprint(entity.MetastoreId), nil
+}
+
+func (l resolveMetastore) String() string {
+	return fmt.Sprintf("metastore: %s", l.name)
+}

bundle/config/variable/resolve_metastore_test.go

@@ -0,0 +1,49 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/catalog"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveMetastore_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockMetastoresAPI()
+	api.EXPECT().
+		GetByName(mock.Anything, "metastore").
+		Return(&catalog.MetastoreInfo{
+			MetastoreId: "abcd",
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveMetastore{name: "metastore"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "abcd", result)
+}
+
+func TestResolveMetastore_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockMetastoresAPI()
+	api.EXPECT().
+		GetByName(mock.Anything, "metastore").
+		Return(nil, &apierr.APIError{StatusCode: 404})
+
+	ctx := context.Background()
+	l := resolveMetastore{name: "metastore"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.ErrorIs(t, err, apierr.ErrNotFound)
+}
+
+func TestResolveMetastore_String(t *testing.T) {
+	l := resolveMetastore{name: "name"}
+	assert.Equal(t, "metastore: name", l.String())
+}

bundle/config/variable/resolve_notification_destination.go

@@ -0,0 +1,46 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+	"github.com/databricks/databricks-sdk-go/service/settings"
+)
+
+type resolveNotificationDestination struct {
+	name string
+}
+
+func (l resolveNotificationDestination) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	result, err := w.NotificationDestinations.ListAll(ctx, settings.ListNotificationDestinationsRequest{
+		// The default page size for this API is 20.
+		// We use a higher value to make fewer API calls.
+		PageSize: 200,
+	})
+	if err != nil {
+		return "", err
+	}
+
+	// Collect all notification destinations with the given name.
+	var entities []settings.ListNotificationDestinationsResult
+	for _, entity := range result {
+		if entity.DisplayName == l.name {
+			entities = append(entities, entity)
+		}
+	}
+
+	// Return the ID of the first matching notification destination.
+	switch len(entities) {
+	case 0:
+		return "", fmt.Errorf("notification destination named %q does not exist", l.name)
+	case 1:
+		return entities[0].Id, nil
+	default:
+		return "", fmt.Errorf("there are %d instances of clusters named %q", len(entities), l.name)
+	}
+}
+
+func (l resolveNotificationDestination) String() string {
+	return fmt.Sprintf("notification-destination: %s", l.name)
+}

bundle/config/variable/resolve_notification_destination_test.go

@@ -0,0 +1,82 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/settings"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveNotificationDestination_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockNotificationDestinationsAPI()
+	api.EXPECT().
+		ListAll(mock.Anything, mock.Anything).
+		Return([]settings.ListNotificationDestinationsResult{
+			{Id: "1234", DisplayName: "destination"},
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveNotificationDestination{name: "destination"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "1234", result)
+}
+
+func TestResolveNotificationDestination_ResolveError(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockNotificationDestinationsAPI()
+	api.EXPECT().
+		ListAll(mock.Anything, mock.Anything).
+		Return(nil, fmt.Errorf("bad"))
+
+	ctx := context.Background()
+	l := resolveNotificationDestination{name: "destination"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	assert.ErrorContains(t, err, "bad")
+}
+
+func TestResolveNotificationDestination_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockNotificationDestinationsAPI()
+	api.EXPECT().
+		ListAll(mock.Anything, mock.Anything).
+		Return([]settings.ListNotificationDestinationsResult{}, nil)
+
+	ctx := context.Background()
+	l := resolveNotificationDestination{name: "destination"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.Error(t, err)
+	assert.ErrorContains(t, err, `notification destination named "destination" does not exist`)
+}
+
+func TestResolveNotificationDestination_ResolveMultiple(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockNotificationDestinationsAPI()
+	api.EXPECT().
+		ListAll(mock.Anything, mock.Anything).
+		Return([]settings.ListNotificationDestinationsResult{
+			{Id: "1234", DisplayName: "destination"},
+			{Id: "5678", DisplayName: "destination"},
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveNotificationDestination{name: "destination"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.Error(t, err)
+	assert.ErrorContains(t, err, `there are 2 instances of clusters named "destination"`)
+}
+
+func TestResolveNotificationDestination_String(t *testing.T) {
+	l := resolveNotificationDestination{name: "name"}
+	assert.Equal(t, "notification-destination: name", l.String())
+}

bundle/config/variable/resolve_pipeline.go

@@ -0,0 +1,24 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+)
+
+type resolvePipeline struct {
+	name string
+}
+
+func (l resolvePipeline) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	entity, err := w.Pipelines.GetByName(ctx, l.name)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprint(entity.PipelineId), nil
+}
+
+func (l resolvePipeline) String() string {
+	return fmt.Sprintf("pipeline: %s", l.name)
+}

bundle/config/variable/resolve_pipeline_test.go

@@ -0,0 +1,49 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/pipelines"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolvePipeline_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockPipelinesAPI()
+	api.EXPECT().
+		GetByName(mock.Anything, "pipeline").
+		Return(&pipelines.PipelineStateInfo{
+			PipelineId: "abcd",
+		}, nil)
+
+	ctx := context.Background()
+	l := resolvePipeline{name: "pipeline"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "abcd", result)
+}
+
+func TestResolvePipeline_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockPipelinesAPI()
+	api.EXPECT().
+		GetByName(mock.Anything, "pipeline").
+		Return(nil, &apierr.APIError{StatusCode: 404})
+
+	ctx := context.Background()
+	l := resolvePipeline{name: "pipeline"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.ErrorIs(t, err, apierr.ErrNotFound)
+}
+
+func TestResolvePipeline_String(t *testing.T) {
+	l := resolvePipeline{name: "name"}
+	assert.Equal(t, "pipeline: name", l.String())
+}

bundle/config/variable/resolve_query.go

@@ -0,0 +1,24 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+)
+
+type resolveQuery struct {
+	name string
+}
+
+func (l resolveQuery) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	entity, err := w.Queries.GetByDisplayName(ctx, l.name)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprint(entity.Id), nil
+}
+
+func (l resolveQuery) String() string {
+	return fmt.Sprintf("query: %s", l.name)
+}

bundle/config/variable/resolve_query_test.go

@@ -0,0 +1,49 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/sql"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveQuery_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockQueriesAPI()
+	api.EXPECT().
+		GetByDisplayName(mock.Anything, "query").
+		Return(&sql.ListQueryObjectsResponseQuery{
+			Id: "1234",
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveQuery{name: "query"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "1234", result)
+}
+
+func TestResolveQuery_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockQueriesAPI()
+	api.EXPECT().
+		GetByDisplayName(mock.Anything, "query").
+		Return(nil, &apierr.APIError{StatusCode: 404})
+
+	ctx := context.Background()
+	l := resolveQuery{name: "query"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.ErrorIs(t, err, apierr.ErrNotFound)
+}
+
+func TestResolveQuery_String(t *testing.T) {
+	l := resolveQuery{name: "name"}
+	assert.Equal(t, "query: name", l.String())
+}

bundle/config/variable/resolve_service_principal.go

@@ -0,0 +1,24 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+)
+
+type resolveServicePrincipal struct {
+	name string
+}
+
+func (l resolveServicePrincipal) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	entity, err := w.ServicePrincipals.GetByDisplayName(ctx, l.name)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprint(entity.ApplicationId), nil
+}
+
+func (l resolveServicePrincipal) String() string {
+	return fmt.Sprintf("service-principal: %s", l.name)
+}

bundle/config/variable/resolve_service_principal_test.go

@@ -0,0 +1,49 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/iam"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveServicePrincipal_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockServicePrincipalsAPI()
+	api.EXPECT().
+		GetByDisplayName(mock.Anything, "service-principal").
+		Return(&iam.ServicePrincipal{
+			ApplicationId: "5678",
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveServicePrincipal{name: "service-principal"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "5678", result)
+}
+
+func TestResolveServicePrincipal_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockServicePrincipalsAPI()
+	api.EXPECT().
+		GetByDisplayName(mock.Anything, "service-principal").
+		Return(nil, &apierr.APIError{StatusCode: 404})
+
+	ctx := context.Background()
+	l := resolveServicePrincipal{name: "service-principal"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.ErrorIs(t, err, apierr.ErrNotFound)
+}
+
+func TestResolveServicePrincipal_String(t *testing.T) {
+	l := resolveServicePrincipal{name: "name"}
+	assert.Equal(t, "service-principal: name", l.String())
+}

bundle/config/variable/resolve_warehouse.go

@@ -0,0 +1,24 @@
+package variable
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/databricks-sdk-go"
+)
+
+type resolveWarehouse struct {
+	name string
+}
+
+func (l resolveWarehouse) Resolve(ctx context.Context, w *databricks.WorkspaceClient) (string, error) {
+	entity, err := w.Warehouses.GetByName(ctx, l.name)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprint(entity.Id), nil
+}
+
+func (l resolveWarehouse) String() string {
+	return fmt.Sprintf("warehouse: %s", l.name)
+}

bundle/config/variable/resolve_warehouse_test.go

@@ -0,0 +1,49 @@
+package variable
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/experimental/mocks"
+	"github.com/databricks/databricks-sdk-go/service/sql"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestResolveWarehouse_ResolveSuccess(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockWarehousesAPI()
+	api.EXPECT().
+		GetByName(mock.Anything, "warehouse").
+		Return(&sql.EndpointInfo{
+			Id: "abcd",
+		}, nil)
+
+	ctx := context.Background()
+	l := resolveWarehouse{name: "warehouse"}
+	result, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.NoError(t, err)
+	assert.Equal(t, "abcd", result)
+}
+
+func TestResolveWarehouse_ResolveNotFound(t *testing.T) {
+	m := mocks.NewMockWorkspaceClient(t)
+
+	api := m.GetMockWarehousesAPI()
+	api.EXPECT().
+		GetByName(mock.Anything, "warehouse").
+		Return(nil, &apierr.APIError{StatusCode: 404})
+
+	ctx := context.Background()
+	l := resolveWarehouse{name: "warehouse"}
+	_, err := l.Resolve(ctx, m.WorkspaceClient)
+	require.ErrorIs(t, err, apierr.ErrNotFound)
+}
+
+func TestResolveWarehouse_String(t *testing.T) {
+	l := resolveWarehouse{name: "name"}
+	assert.Equal(t, "warehouse: name", l.String())
+}