» Command: terraform providers schema

The terraform providers schema command is used to print detailed schemas for the providers used in the current configuration.

terraform providers schema requires Terraform v0.12 or later.

» Usage

Usage: terraform providers schema [options]

The list of available flags are:

-json - Displays the schemas in a machine-readable, JSON format.

Please note that, at this time, the -json flag is a required option. In future releases, this command will be extended to allow for additional options.

Note: The output includes a format_version key, which currently has major version zero to indicate that the format is experimental and subject to change. A future version will assign a non-zero major version and make stronger promises about compatibility. We do not anticipate any significant breaking changes to the format before its first major version, however.

» Format Summary

The following sections describe the JSON output format by example, using a pseudo-JSON notation. Important elements are described with comments, which are prefixed with //. To avoid excessive repetition, we've split the complete format into several discrete sub-objects, described under separate headers. References wrapped in angle brackets (like <block-representation>) are placeholders which, in the real output, would be replaced by an instance of the specified sub-object.

The JSON output format consists of the following objects and sub-objects:

Providers Schema Representation - the top-level object returned by terraform providers schema -json
Schema Representation - a sub-object of providers, resources, and data sources that describes their schema
Block Representation - a sub-object of schemas that describes attributes and nested blocks

» Providers Schema Representation

{
  "format_version": "0.1",

  // "provider_schemas" describes the provider schemas for all
  // providers throughout the configuration tree.
  "provider_schemas": {
    // keys in this map are the provider type, such as "random"
    "example_provider_name": {
      // "provider" is the schema for the provider configuration
      "provider": <schema-representation>,

      // "resource_schemas" map the resource type name to the resource's schema
      "resource_schemas": {
        "example_resource_name": <schema-representation>
      },

      // "data_source_schemas" map the data source type name to the
      // data source's schema
      "data_source_schemas": {
        "example_datasource_name": <schema-representation>,
      }
    },
    "example_provider_two": { … }
  }
}

» Schema Representation

A schema representation pairs a provider or resource schema (in a "block") with that schema's version.

{
  // "version" is the schema version, not the provider version
  "version": int64,
  "block": <block-representation>
}

» Block Representation

A block representation contains "attributes" and "block_types" (which represent nested blocks).

{
  // "attributes" describes any attributes that appear directly inside the
  // block. Keys in this map are the attribute names.
  "attributes":  {
    "example_attribute_name": {
      // "type" is a representation of a type specification
      // that the attribute's value must conform to.
      "type": "string",

      // "description" is an English-language description of
      // the purpose and usage of the attribute.
      "description": "string",

      // "required", if set to true, specifies that an
      // omitted or null value is not permitted.
      "required": bool,

      // "optional", if set to true, specifies that an
      // omitted or null value is permitted.
      "optional": bool,

      // "computed", if set to true, indicates that the
      // value comes from the provider rather than the
      // configuration.
      "computed": bool,

      // "sensitive", if set to true, indicates that the
      // attribute may contain sensitive information.
      "sensitive": bool
    },
  },
  // "block_types" describes any nested blocks that appear directly
  // inside the block.
  // Keys in this map are the names of the block_type.
  "block_types": {
    "example_block_name": {
      // "nesting_mode" describes the nesting mode for the
      // child block, and can be one of the following:
      //    single
      //    list
      //    set
      //    map
    "nesting_mode": "list",
    "block": <block-representation>,

    // "min_items" and "max_items" set lower and upper
    // limits on the number of child blocks allowed for
    // the list and set modes. These are
    // omitted for other modes.
    "min_items": 1,
    "max_items": 3
  }
}

Terraform CLI

Other Docs