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AWS Fundamentals
AWS::AppSync::Resolver

AppSync Resolver

The AWS::AppSync::Resolver resource defines the logical GraphQL resolver that you attach to fields in a schema. Request and response templates for resolvers are written in Apache Velocity Template Language (VTL) format. For more information about resolvers, see [Resolver Mapping Template Reference](https://docs.aws.amazon.com/appsync/latest/devguide/resolver-mapping-template-reference.html). When you submit an update, CFNLong 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 CFNshort template. Changing the S3 file content without changing a property value will not result in an update operation. See [Update Behaviors of Stack Resources](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html) in the *User Guide*.

Properties

17 configurable properties. 3 required. Click a row to see details.

Filter:
PropertyTypeFlags
ApiId
string
RequiredCreate-only
FieldName
string
RequiredCreate-only
TypeName
string
RequiredCreate-only
CachingConfig
CachingConfig
Code
string
CodeS3Location
string
Write-only
DataSourceName
string
Kind
string
MaxBatchSize
integer
MetricsConfig
string
PipelineConfig
PipelineConfig
RequestMappingTemplate
string
RequestMappingTemplateS3Location
string
Write-only
ResponseMappingTemplate
string
ResponseMappingTemplateS3Location
string
Write-only
Runtime
AppSyncRuntime
SyncConfig
SyncConfig

Return Values

Values returned after the resource is created. Access these with Fn::GetAtt.

AttributeTypeDescription
ResolverArnstring-

Sample CloudFormation Template

A minimal template with required properties and common optional ones.

template.yaml
AWSTemplateFormatVersion: "2010-09-09"
Description: Sample template for AWS::AppSync::Resolver

Resources:
  MyResource:
    Type: AWS::AppSync::Resolver
    Properties:
      TypeName: "my-typename"
      ApiId: "my-apiid"
      FieldName: "my-fieldname"

Required IAM Permissions

Permissions CloudFormation needs in your IAM role to manage this resource.

create

s3:GetObjectappsync:CreateResolverappsync:GetResolver

read

appsync:GetResolver

update

s3:GetObjectappsync:UpdateResolver

delete

appsync:DeleteResolver

list

appsync:ListResolvers

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Quick Facts

ServiceAppSync
Properties18
Required3
TaggingNot supported
Primary IDResolverArn

Supported Operations

CreateReadUpdateDeleteList

Immutable After Creation

These properties cannot be changed after the resource is created. Updating them triggers a replacement.

ApiIdFieldNameTypeName

Related Resources

External Links