databricks-cli/bundle/deploy/terraform/convert.go

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package terraform
import (
"context"
"encoding/json"
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"fmt"
"github.com/databricks/cli/bundle/config"
"github.com/databricks/cli/bundle/config/resources"
"github.com/databricks/cli/bundle/deploy/terraform/tfdyn"
"github.com/databricks/cli/bundle/internal/tf/schema"
"github.com/databricks/cli/libs/dyn"
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tfjson "github.com/hashicorp/terraform-json"
)
func conv(from any, to any) {
buf, _ := json.Marshal(from)
json.Unmarshal(buf, &to)
}
func convPermissions(acl []resources.Permission) *schema.ResourcePermissions {
if len(acl) == 0 {
return nil
}
resource := schema.ResourcePermissions{}
for _, ac := range acl {
resource.AccessControl = append(resource.AccessControl, convPermission(ac))
}
return &resource
}
func convPermission(ac resources.Permission) schema.ResourcePermissionsAccessControl {
dst := schema.ResourcePermissionsAccessControl{
PermissionLevel: ac.Level,
}
if ac.UserName != "" {
dst.UserName = ac.UserName
}
if ac.GroupName != "" {
dst.GroupName = ac.GroupName
}
if ac.ServicePrincipalName != "" {
dst.ServicePrincipalName = ac.ServicePrincipalName
}
return dst
}
func convGrants(acl []resources.Grant) *schema.ResourceGrants {
if len(acl) == 0 {
return nil
}
resource := schema.ResourceGrants{}
for _, ac := range acl {
resource.Grant = append(resource.Grant, schema.ResourceGrantsGrant{
Privileges: ac.Privileges,
Principal: ac.Principal,
})
}
return &resource
}
// BundleToTerraform converts resources in a bundle configuration
// to the equivalent Terraform JSON representation.
//
// Note: This function is an older implementation of the conversion logic. It is
// no longer used in any code paths. It is kept around to be used in tests.
// New resources do not need to modify this function and can instead can define
// the conversion login in the tfdyn package.
func BundleToTerraform(config *config.Root) *schema.Root {
tfroot := schema.NewRoot()
tfroot.Provider = schema.NewProviders()
tfroot.Resource = schema.NewResources()
noResources := true
for k, src := range config.Resources.Jobs {
noResources = false
var dst schema.ResourceJob
conv(src, &dst)
if src.JobSettings != nil {
for _, v := range src.Tasks {
var t schema.ResourceJobTask
conv(v, &t)
for _, v_ := range v.Libraries {
var l schema.ResourceJobTaskLibrary
conv(v_, &l)
t.Library = append(t.Library, l)
}
// Convert for_each_task libraries
if v.ForEachTask != nil {
for _, v_ := range v.ForEachTask.Task.Libraries {
var l schema.ResourceJobTaskForEachTaskTaskLibrary
conv(v_, &l)
t.ForEachTask.Task.Library = append(t.ForEachTask.Task.Library, l)
}
}
dst.Task = append(dst.Task, t)
}
for _, v := range src.JobClusters {
var t schema.ResourceJobJobCluster
conv(v, &t)
dst.JobCluster = append(dst.JobCluster, t)
}
// Unblock downstream work. To be addressed more generally later.
if git := src.GitSource; git != nil {
dst.GitSource = &schema.ResourceJobGitSource{
Url: git.GitUrl,
Branch: git.GitBranch,
Commit: git.GitCommit,
Provider: string(git.GitProvider),
Tag: git.GitTag,
}
}
for _, v := range src.Parameters {
var t schema.ResourceJobParameter
conv(v, &t)
dst.Parameter = append(dst.Parameter, t)
}
}
tfroot.Resource.Job[k] = &dst
// Configure permissions for this resource.
if rp := convPermissions(src.Permissions); rp != nil {
rp.JobId = fmt.Sprintf("${databricks_job.%s.id}", k)
tfroot.Resource.Permissions["job_"+k] = rp
}
}
for k, src := range config.Resources.Pipelines {
noResources = false
var dst schema.ResourcePipeline
conv(src, &dst)
if src.PipelineSpec != nil {
for _, v := range src.Libraries {
var l schema.ResourcePipelineLibrary
conv(v, &l)
dst.Library = append(dst.Library, l)
}
for _, v := range src.Clusters {
var l schema.ResourcePipelineCluster
conv(v, &l)
dst.Cluster = append(dst.Cluster, l)
}
for _, v := range src.Notifications {
var l schema.ResourcePipelineNotification
conv(v, &l)
dst.Notification = append(dst.Notification, l)
}
}
tfroot.Resource.Pipeline[k] = &dst
// Configure permissions for this resource.
if rp := convPermissions(src.Permissions); rp != nil {
rp.PipelineId = fmt.Sprintf("${databricks_pipeline.%s.id}", k)
tfroot.Resource.Permissions["pipeline_"+k] = rp
}
}
for k, src := range config.Resources.Models {
noResources = false
var dst schema.ResourceMlflowModel
conv(src, &dst)
tfroot.Resource.MlflowModel[k] = &dst
// Configure permissions for this resource.
if rp := convPermissions(src.Permissions); rp != nil {
rp.RegisteredModelId = fmt.Sprintf("${databricks_mlflow_model.%s.registered_model_id}", k)
tfroot.Resource.Permissions["mlflow_model_"+k] = rp
}
}
for k, src := range config.Resources.Experiments {
noResources = false
var dst schema.ResourceMlflowExperiment
conv(src, &dst)
tfroot.Resource.MlflowExperiment[k] = &dst
// Configure permissions for this resource.
if rp := convPermissions(src.Permissions); rp != nil {
rp.ExperimentId = fmt.Sprintf("${databricks_mlflow_experiment.%s.id}", k)
tfroot.Resource.Permissions["mlflow_experiment_"+k] = rp
}
}
for k, src := range config.Resources.ModelServingEndpoints {
noResources = false
var dst schema.ResourceModelServing
conv(src, &dst)
tfroot.Resource.ModelServing[k] = &dst
// Configure permissions for this resource.
if rp := convPermissions(src.Permissions); rp != nil {
rp.ServingEndpointId = fmt.Sprintf("${databricks_model_serving.%s.serving_endpoint_id}", k)
tfroot.Resource.Permissions["model_serving_"+k] = rp
}
}
for k, src := range config.Resources.RegisteredModels {
noResources = false
var dst schema.ResourceRegisteredModel
conv(src, &dst)
tfroot.Resource.RegisteredModel[k] = &dst
// Configure permissions for this resource.
if rp := convGrants(src.Grants); rp != nil {
rp.Function = fmt.Sprintf("${databricks_registered_model.%s.id}", k)
tfroot.Resource.Grants["registered_model_"+k] = rp
}
}
for k, src := range config.Resources.QualityMonitors {
noResources = false
var dst schema.ResourceQualityMonitor
conv(src, &dst)
tfroot.Resource.QualityMonitor[k] = &dst
}
// We explicitly set "resource" to nil to omit it from a JSON encoding.
// This is required because the terraform CLI requires >= 1 resources defined
// if the "resource" property is used in a .tf.json file.
if noResources {
tfroot.Resource = nil
}
return tfroot
}
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// BundleToTerraformWithDynValue converts resources in a bundle configuration
// to the equivalent Terraform JSON representation.
func BundleToTerraformWithDynValue(ctx context.Context, root dyn.Value) (*schema.Root, error) {
tfroot := schema.NewRoot()
tfroot.Provider = schema.NewProviders()
// Convert each resource in the bundle to the equivalent Terraform representation.
dynResources, err := dyn.Get(root, "resources")
if err != nil {
// If the resources key is missing, return an empty root.
if dyn.IsNoSuchKeyError(err) {
return tfroot, nil
}
return nil, err
}
tfroot.Resource = schema.NewResources()
numResources := 0
_, err = dyn.Walk(dynResources, func(p dyn.Path, v dyn.Value) (dyn.Value, error) {
if len(p) < 2 {
return v, nil
}
// Skip resources that have been deleted locally.
modifiedStatus, err := dyn.Get(v, "modified_status")
if err == nil {
modifiedStatusStr, ok := modifiedStatus.AsString()
if ok && modifiedStatusStr == resources.ModifiedStatusDeleted {
return v, dyn.ErrSkip
}
}
typ := p[0].Key()
key := p[1].Key()
// Lookup the converter based on the resource type.
c, ok := tfdyn.GetConverter(typ)
if !ok {
return dyn.InvalidValue, fmt.Errorf("no converter for resource type %s", typ)
}
// Convert resource to Terraform representation.
err = c.Convert(ctx, key, v, tfroot.Resource)
if err != nil {
return dyn.InvalidValue, err
}
numResources++
// Skip traversal of the resource itself.
return v, dyn.ErrSkip
})
if err != nil {
return nil, err
}
// We explicitly set "resource" to nil to omit it from a JSON encoding.
// This is required because the terraform CLI requires >= 1 resources defined
// if the "resource" property is used in a .tf.json file.
if numResources == 0 {
tfroot.Resource = nil
}
return tfroot, nil
}
func TerraformToBundle(state *resourcesState, config *config.Root) error {
for _, resource := range state.Resources {
if resource.Mode != tfjson.ManagedResourceMode {
continue
}
for _, instance := range resource.Instances {
switch resource.Type {
case "databricks_job":
if config.Resources.Jobs == nil {
config.Resources.Jobs = make(map[string]*resources.Job)
}
cur := config.Resources.Jobs[resource.Name]
if cur == nil {
cur = &resources.Job{ModifiedStatus: resources.ModifiedStatusDeleted}
}
cur.ID = instance.Attributes.ID
config.Resources.Jobs[resource.Name] = cur
case "databricks_pipeline":
if config.Resources.Pipelines == nil {
config.Resources.Pipelines = make(map[string]*resources.Pipeline)
}
cur := config.Resources.Pipelines[resource.Name]
if cur == nil {
cur = &resources.Pipeline{ModifiedStatus: resources.ModifiedStatusDeleted}
}
cur.ID = instance.Attributes.ID
config.Resources.Pipelines[resource.Name] = cur
case "databricks_mlflow_model":
if config.Resources.Models == nil {
config.Resources.Models = make(map[string]*resources.MlflowModel)
}
cur := config.Resources.Models[resource.Name]
if cur == nil {
cur = &resources.MlflowModel{ModifiedStatus: resources.ModifiedStatusDeleted}
}
cur.ID = instance.Attributes.ID
config.Resources.Models[resource.Name] = cur
case "databricks_mlflow_experiment":
if config.Resources.Experiments == nil {
config.Resources.Experiments = make(map[string]*resources.MlflowExperiment)
}
cur := config.Resources.Experiments[resource.Name]
if cur == nil {
cur = &resources.MlflowExperiment{ModifiedStatus: resources.ModifiedStatusDeleted}
}
cur.ID = instance.Attributes.ID
config.Resources.Experiments[resource.Name] = cur
case "databricks_model_serving":
if config.Resources.ModelServingEndpoints == nil {
config.Resources.ModelServingEndpoints = make(map[string]*resources.ModelServingEndpoint)
}
cur := config.Resources.ModelServingEndpoints[resource.Name]
if cur == nil {
cur = &resources.ModelServingEndpoint{ModifiedStatus: resources.ModifiedStatusDeleted}
}
cur.ID = instance.Attributes.ID
config.Resources.ModelServingEndpoints[resource.Name] = cur
case "databricks_registered_model":
if config.Resources.RegisteredModels == nil {
config.Resources.RegisteredModels = make(map[string]*resources.RegisteredModel)
}
cur := config.Resources.RegisteredModels[resource.Name]
if cur == nil {
cur = &resources.RegisteredModel{ModifiedStatus: resources.ModifiedStatusDeleted}
}
cur.ID = instance.Attributes.ID
config.Resources.RegisteredModels[resource.Name] = cur
case "databricks_quality_monitor":
if config.Resources.QualityMonitors == nil {
config.Resources.QualityMonitors = make(map[string]*resources.QualityMonitor)
}
cur := config.Resources.QualityMonitors[resource.Name]
if cur == nil {
cur = &resources.QualityMonitor{ModifiedStatus: resources.ModifiedStatusDeleted}
}
cur.ID = instance.Attributes.ID
config.Resources.QualityMonitors[resource.Name] = cur
case "databricks_schema":
if config.Resources.Schemas == nil {
config.Resources.Schemas = make(map[string]*resources.Schema)
}
cur := config.Resources.Schemas[resource.Name]
if cur == nil {
cur = &resources.Schema{ModifiedStatus: resources.ModifiedStatusDeleted}
}
cur.ID = instance.Attributes.ID
config.Resources.Schemas[resource.Name] = cur
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case "databricks_dashboard":
if config.Resources.Dashboards == nil {
config.Resources.Dashboards = make(map[string]*resources.Dashboard)
}
cur := config.Resources.Dashboards[resource.Name]
if cur == nil {
cur = &resources.Dashboard{ModifiedStatus: resources.ModifiedStatusDeleted}
}
cur.ID = instance.Attributes.ID
config.Resources.Dashboards[resource.Name] = cur
case "databricks_permissions":
case "databricks_grants":
// Ignore; no need to pull these back into the configuration.
default:
return fmt.Errorf("missing mapping for %s", resource.Type)
}
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}
}
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for _, src := range config.Resources.Jobs {
if src.ModifiedStatus == "" && src.ID == "" {
src.ModifiedStatus = resources.ModifiedStatusCreated
}
}
for _, src := range config.Resources.Pipelines {
if src.ModifiedStatus == "" && src.ID == "" {
src.ModifiedStatus = resources.ModifiedStatusCreated
}
}
for _, src := range config.Resources.Models {
if src.ModifiedStatus == "" && src.ID == "" {
src.ModifiedStatus = resources.ModifiedStatusCreated
}
}
for _, src := range config.Resources.Experiments {
if src.ModifiedStatus == "" && src.ID == "" {
src.ModifiedStatus = resources.ModifiedStatusCreated
}
}
for _, src := range config.Resources.ModelServingEndpoints {
if src.ModifiedStatus == "" && src.ID == "" {
src.ModifiedStatus = resources.ModifiedStatusCreated
}
}
for _, src := range config.Resources.RegisteredModels {
if src.ModifiedStatus == "" && src.ID == "" {
src.ModifiedStatus = resources.ModifiedStatusCreated
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}
}
for _, src := range config.Resources.QualityMonitors {
if src.ModifiedStatus == "" && src.ID == "" {
src.ModifiedStatus = resources.ModifiedStatusCreated
}
}
for _, src := range config.Resources.Schemas {
if src.ModifiedStatus == "" && src.ID == "" {
src.ModifiedStatus = resources.ModifiedStatusCreated
}
}
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return nil
}