Syntax Properties Return values Examples See also

AWS::AppSync::GraphQLSchema

The AWS::AppSync::GraphQLSchema resource is used for your Amazon AppSync GraphQL schema that controls the data model for your API. Schema files are text written in Schema Definition Language (SDL) format. For more information about schema authoring, see Designing a GraphQL API in the Amazon AppSync Developer Guide.

Note

When you submit an update, Amazon CloudFormation updates resources based on differences between what you submit and the stack's current template. To cause this resource to be updated you must change a property value for this resource in the CloudFormation template. Changing the Amazon S3 file content without changing a property value will not result in an update operation.

See Update Behaviors of Stack Resources in the Amazon CloudFormation User Guide.

Syntax

To declare this entity in your Amazon CloudFormation template, use the following syntax:

JSON


{
  "Type" : "AWS::AppSync::GraphQLSchema",
  "Properties" : {
      "ApiId" : String,
      "Definition" : String,
      "DefinitionS3Location" : String
    }
}

YAML


Type: AWS::AppSync::GraphQLSchema
Properties:
  ApiId: String
  Definition: String
  DefinitionS3Location: String

Properties

ApiId

The Amazon AppSync GraphQL API identifier to which you want to apply this schema.

Required: Yes

Type: String

Update requires: Replacement

Definition

The text representation of a GraphQL schema in SDL format.

For more information about using the Ref function, see Ref.

Required: No

Type: String

Update requires: No interruption

DefinitionS3Location

The location of a GraphQL schema file in an Amazon S3 bucket. Use this if you want to provision with the schema living in Amazon S3 rather than embedding it in your CloudFormation template.

Required: No

Type: String

Update requires: No interruption

Return values

Ref

When you pass the logical ID of an AWS::AppSync::GraphQLSchema resource to the intrinsic Ref function, the function returns the GraphQL API ID with the literal String GraphQLSchema attached to it.

Fn::GetAtt

Fn::GetAtt returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using Fn::GetAtt, see Fn::GetAtt.

Id: The ID value.

Examples

GraphQL Schema Creation Example

The following example creates a GraphQL Schema and associates it with an existing GraphQL API by passing the GraphQL API ID as a parameter.

YAML


Parameters:
  graphQlApiId:
    Type: String
  graphQlSchemaS3DescriptionLocation:
    Type: String
Resources:
  Schema:
    Type: AWS::AppSync::GraphQLSchema
    Properties:
      ApiId:
	Ref: graphQlApiId
      DefinitionS3Location:
        Ref: graphQlSchemaS3DescriptionLocation

JSON


{
  "Parameters": {
    "graphQlApiId": {
      "Type": "String"
    },
    "graphQlSchemaS3DescriptionLocation": {
      "Type": "String"
    }
  },
  "Resources": {
    "Schema": {
      "Type": "AWS::AppSync::GraphQLSchema",
      "Properties": {
        "ApiId": {
          "Ref": "graphQlApiId"
        },
        "DefinitionS3Location": {
          "Ref": "graphQlSchemaS3DescriptionLocation"
        }
      }       
    }
  }
}