resolvers

Creates, updates, deletes or gets a resolver resource or lists resolvers in a region

Overview

Name	resolvers
Type	Resource
Description	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*.
Id	aws.appsync.resolvers

Fields

Name	Datatype	Description
api_id	string	The APSYlong GraphQL API to which you want to attach this resolver.
caching_config	object	The caching configuration for the resolver.
code	string	The resolver code that contains the request and response functions. When code is used, the runtime is required. The runtime value must be APPSYNC_JS.
code_s3_location	string	The Amazon S3 endpoint.
data_source_name	string	The resolver data source name.
field_name	string	The GraphQL field on a type that invokes the resolver.
kind	string	The resolver type. + *UNIT*: A UNIT resolver type. A UNIT resolver is the default resolver type. You can use a UNIT resolver to run a GraphQL query against a single data source. + *PIPELINE*: A PIPELINE resolver type. You can use a PIPELINE resolver to invoke a series of Function objects in a serial manner. You can use a pipeline resolver to run a GraphQL query against multiple data sources.
max_batch_size	integer	The maximum number of resolver request inputs that will be sent to a single LAMlong function in a BatchInvoke operation.
pipeline_config	object	Functions linked with the pipeline resolver.
request_mapping_template	string	The request mapping template. Request mapping templates are optional when using a Lambda data source. For all other data sources, a request mapping template is required.
request_mapping_template_s3_location	string	The location of a request mapping template in an S3 bucket. Use this if you want to provision with a template file in S3 rather than embedding it in your CFNshort template.
resolver_arn	string
response_mapping_template	string	The response mapping template.
response_mapping_template_s3_location	string	The location of a response mapping template in an S3 bucket. Use this if you want to provision with a template file in S3 rather than embedding it in your CFNshort template.
runtime	object	Describes a runtime used by an APSYlong resolver or APSYlong function. Specifies the name and version of the runtime to use. Note that if a runtime is specified, code must also be specified.
sync_config	object	The SyncConfig for a resolver attached to a versioned data source.
type_name	string	The GraphQL type that invokes this resolver.
metrics_config	string	Enables or disables enhanced resolver metrics for specified resolvers. Note that MetricsConfig won't be used unless the resolverLevelMetricsBehavior value is set to PER_RESOLVER_METRICS. If the resolverLevelMetricsBehavior is set to FULL_REQUEST_RESOLVER_METRICS instead, MetricsConfig will be ignored. However, you can still set its value.
region	string	AWS region.

Methods

Name	Accessible by	Required Params
create_resource	INSERT	TypeName, ApiId, FieldName, region
delete_resource	DELETE	data__Identifier, region
update_resource	UPDATE	data__Identifier, data__PatchDocument, region
list_resources	SELECT	region
get_resource	SELECT	data__Identifier, region

SELECT examples

Gets all resolvers in a region.

SELECT
region,
api_id,
caching_config,
code,
code_s3_location,
data_source_name,
field_name,
kind,
max_batch_size,
pipeline_config,
request_mapping_template,
request_mapping_template_s3_location,
resolver_arn,
response_mapping_template,
response_mapping_template_s3_location,
runtime,
sync_config,
type_name,
metrics_config
FROM aws.appsync.resolvers
WHERE region = 'us-east-1';

Gets all properties from an individual resolver.

SELECT
region,
api_id,
caching_config,
code,
code_s3_location,
data_source_name,
field_name,
kind,
max_batch_size,
pipeline_config,
request_mapping_template,
request_mapping_template_s3_location,
resolver_arn,
response_mapping_template,
response_mapping_template_s3_location,
runtime,
sync_config,
type_name,
metrics_config
FROM aws.appsync.resolvers
WHERE region = 'us-east-1' AND data__Identifier = '<ResolverArn>';

INSERT example

Use the following StackQL query and manifest file to create a new resolver resource, using stack-deploy.

Required Properties

/*+ create */
INSERT INTO aws.appsync.resolvers (
 ApiId,
 FieldName,
 TypeName,
 region
)
SELECT 
'{{ ApiId }}',
 '{{ FieldName }}',
 '{{ TypeName }}',
'{{ region }}';

All Properties

/*+ create */
INSERT INTO aws.appsync.resolvers (
 ApiId,
 CachingConfig,
 Code,
 CodeS3Location,
 DataSourceName,
 FieldName,
 Kind,
 MaxBatchSize,
 PipelineConfig,
 RequestMappingTemplate,
 RequestMappingTemplateS3Location,
 ResponseMappingTemplate,
 ResponseMappingTemplateS3Location,
 Runtime,
 SyncConfig,
 TypeName,
 MetricsConfig,
 region
)
SELECT 
 '{{ ApiId }}',
 '{{ CachingConfig }}',
 '{{ Code }}',
 '{{ CodeS3Location }}',
 '{{ DataSourceName }}',
 '{{ FieldName }}',
 '{{ Kind }}',
 '{{ MaxBatchSize }}',
 '{{ PipelineConfig }}',
 '{{ RequestMappingTemplate }}',
 '{{ RequestMappingTemplateS3Location }}',
 '{{ ResponseMappingTemplate }}',
 '{{ ResponseMappingTemplateS3Location }}',
 '{{ Runtime }}',
 '{{ SyncConfig }}',
 '{{ TypeName }}',
 '{{ MetricsConfig }}',
 '{{ region }}';

Manifest

version: 1
name: stack name
description: stack description
providers:
  - aws
globals:
  - name: region
    value: '{{ vars.AWS_REGION }}'
resources:
  - name: resolver
    props:
      - name: ApiId
        value: '{{ ApiId }}'
      - name: CachingConfig
        value:
          CachingKeys:
            - '{{ CachingKeys[0] }}'
          Ttl: null
      - name: Code
        value: '{{ Code }}'
      - name: CodeS3Location
        value: '{{ CodeS3Location }}'
      - name: DataSourceName
        value: '{{ DataSourceName }}'
      - name: FieldName
        value: '{{ FieldName }}'
      - name: Kind
        value: '{{ Kind }}'
      - name: MaxBatchSize
        value: '{{ MaxBatchSize }}'
      - name: PipelineConfig
        value:
          Functions:
            - '{{ Functions[0] }}'
      - name: RequestMappingTemplate
        value: '{{ RequestMappingTemplate }}'
      - name: RequestMappingTemplateS3Location
        value: '{{ RequestMappingTemplateS3Location }}'
      - name: ResponseMappingTemplate
        value: '{{ ResponseMappingTemplate }}'
      - name: ResponseMappingTemplateS3Location
        value: '{{ ResponseMappingTemplateS3Location }}'
      - name: Runtime
        value:
          RuntimeVersion: '{{ RuntimeVersion }}'
          Name: '{{ Name }}'
      - name: SyncConfig
        value:
          ConflictHandler: '{{ ConflictHandler }}'
          ConflictDetection: '{{ ConflictDetection }}'
          LambdaConflictHandlerConfig:
            LambdaConflictHandlerArn: '{{ LambdaConflictHandlerArn }}'
      - name: TypeName
        value: '{{ TypeName }}'
      - name: MetricsConfig
        value: '{{ MetricsConfig }}'

DELETE example

/*+ delete */
DELETE FROM aws.appsync.resolvers
WHERE data__Identifier = '<ResolverArn>'
AND region = 'us-east-1';

Permissions

To operate on the resolvers resource, the following permissions are required:

Create

s3:GetObject,
appsync:CreateResolver,
appsync:GetResolver

Read

appsync:GetResolver

Update

s3:GetObject,
appsync:UpdateResolver

Delete

appsync:DeleteResolver

List

appsync:ListResolvers