Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
provider/metaschema: Initial package (#562)
Reference: #132 Reference: #326 Reference: #437 Reference: #491 Reference: #508 Reference: #532 This change introduces a new `provider/metaschema` package, which contains schema interfaces and types relevant to provider meta schemas, such as omitting `Computed`, `DeprecatedMessage`, `Sensitive`, plan modifiers, validators, blocks, schema descriptions, and schema versioning. This new schema implementation also provides strongly typed attributes and nested attributes with customizable types. Nested attributes are exposed with a separate nested object for customization. The implementation leans heavily on the design choice of the framework being responsible for preventing provider developer runtime errors. The tailored fields no longer expose functionality that is not available for provider meta schemas. No changes are required for data handling during requests. Example definition: ```go package test import ( "context" "github.com/bflad/terraform-plugin-framework-type-time/timetypes" "github.com/hashicorp/terraform-plugin-framework-validators/float64validator" "github.com/hashicorp/terraform-plugin-framework-validators/listvalidator" "github.com/hashicorp/terraform-plugin-framework-validators/stringvalidator" "github.com/hashicorp/terraform-plugin-framework/provider" "github.com/hashicorp/terraform-plugin-framework/provider/metaschema" "github.com/hashicorp/terraform-plugin-framework/schema/validator" "github.com/hashicorp/terraform-plugin-framework/types" ) type ExampleCloudProvider struct{} func (p ExampleCloudProvider) MetaSchema(ctx context.Context, req provider.MetaSchemaRequest, resp *provider.MetaSchemaResponse) { resp.Schema = metaschema.Schema{ Attributes: map[string]schema.Attribute{ "string_attribute": schema.StringAttribute{ Required: true, }, "custom_string_attribute": schema.StringAttribute{ CustomType: timetypes.RFC3339Type, Optional: true, }, "list_attribute": schema.ListAttribute{ ElementType: types.StringType, Optional: true, }, "list_nested_attribute": schema.ListNestedAttribute{ NestedObject: schema.NestedAttributeObject{ Attributes: map[string]schema.Attribute{ "bool_attribute": schema.BoolAttribute{ Optional: true, }, }, }, Optional: true, }, "single_nested_attribute": schema.SingleNestedAttribute{ Attributes: map[string]schema.Attribute{ "int64_attribute": schema.Int64Attribute{ Optional: true, }, }, Optional: true, }, }, } } ``` To migrate a provider meta schema: - Add `github.com/hashicorp/terraform-plugin-framework/provider/metaschema` to the `import` statement - Switch the `provider.ProviderWithMetaSchema` implementation `GetMetaSchema` method to `MetaSchema` whose response includes a `metaschema.Schema` from the new package. Prior implementation: ```go func (p ExampleCloudProvider) GetMetaSchema(ctx context.Context) (tfsdk.Schema, diag.Diagnostics) { return tfsdk.Schema{/* ... */}, nil } ``` Migrated implementation: ```go func (p ExampleCloudProvider) MetaSchema(ctx context.Context, req provider.MetaSchemaRequest, resp *provider.MetaSchemaResponse) { resp.Schema = metaschema.Schema{/*...*/} } ``` If the provider requires no meta schema, the method can be removed entirely. - Switch `map[string]tfsdk.Attribute` with `map[string]metaschema.Attribute` - Switch individual attribute definitions. Unless the code was already taking advantage of custom attribute types (uncommon so far), the `Type` field will be removed and the map entries must declare the typed implementation, e.g. a `tfsdk.Attribute` with `Type: types.StringType` is equivalent to `metaschema.StringAttribute`. Custom attribute types can be specified via the `CustomType` field in each of the implementations. Prior primitive type (`types.BoolType`, `types.Float64Type`, `types.Int64Type`, `types.NumberType`, `types.StringType`) attribute implementation: ```go // The "tfsdk.Attribute" could be omitted inside a map[string]tfsdk.Attribute tfsdk.Attribute{ Required: true, Type: types.StringType, } ``` Migrated implementation: ```go // The metaschema.XXXAttribute must be declared inside map[string]metaschema.Attribute schema.StringAttribute{ Required: true, } ``` Prior collection type (`types.ListType`, `types.MapType`, `types.SetType`) attribute implementation: ```go // The "tfsdk.Attribute" could be omitted inside a map[string]tfsdk.Attribute tfsdk.Attribute{ Required: true, Type: types.ListType{ ElemType: types.StringType, }, } ``` Migrated implementation: ```go // The metaschema.XXXAttribute must be declared inside map[string]metaschema.Attribute metaschema.ListAttribute{ ElementType: types.StringType, Required: true, } ``` Prior single nested attributes type (`tfsdk.SingleNestedAttributes()`) attribute implementation: ```go // The "tfsdk.Attribute" could be omitted inside a map[string]tfsdk.Attribute tfsdk.Attribute{ Attributes: tfsdk.SingleNestedAttributes(map[string]tfsdk.Attribute{/*...*/}), Required: true, }, ``` Migrated implementation: ```go // The metaschema.XXXAttribute must be declared inside map[string]metaschema.Attribute metaschema.SingleNestedAttribute{ Attributes: map[string]metaschema.Attribute{/*...*/}, Required: true, } ``` Prior collection nested attributes type (`tfsdk.ListNestedAttributes()`, `tfsdk.MapNestedAttributes()`, `tfsdk.SetNestedAttributes()`) attribute implementation: ```go // The "tfsdk.Attribute" could be omitted inside a map[string]tfsdk.Attribute tfsdk.Attribute{ Attributes: tfsdk.ListNestedAttributes(map[string]tfsdk.Attribute{/*...*/}), Required: true, }, ``` Migrated implementation: ```go // The metaschema.XXXAttribute must be declared inside map[string]metaschema.Attribute metaschema.ListNestedAttribute{ NestedObject: metaschema.NestedAttributeObject{ Attributes: map[string]metaschema.Attribute{/*...*/}, }, Required: true, } ```
- Loading branch information
