AppSync
GraphQL APIs — data sources, resolvers, types, API keys, and a GraphQL data plane that executes queries/mutations against DynamoDB and Lambda data sources (plus Lambda authorizers). Also covers the AppSync Events API: Event APIs and channel namespaces, with HTTP publish and WebSocket subscribe.
Quick start
import boto3
sync = boto3.client("appsync", endpoint_url="http://localhost:4566",
region_name="us-east-1",
aws_access_key_id="test", aws_secret_access_key="test")
sync.create_graphql_api(name="demo", authenticationType="API_KEY")
Supported operations
52 operations exposed by this service as of MiniStack 1.5.24. Extracted directly from the handler dispatch in the source module.
CreateApi
CreateApiCache
CreateApiKey
CreateChannelNamespace
CreateDataSource
CreateFunction
CreateGraphqlApi
CreateResolver
CreateType
DeleteApi
DeleteApiCache
DeleteApiKey
DeleteChannelNamespace
DeleteDataSource
DeleteFunction
DeleteGraphqlApi
DeleteResolver
EvaluateCode
FlushApiCache
GetApi
GetApiCache
GetChannelNamespace
GetDataSource
GetFunction
GetGraphqlApi
GetGraphqlApiEnvironmentVariables
GetIntrospectionSchema
GetResolver
GetSchemaCreationStatus
GetType
ListApiKeys
ListApis
ListChannelNamespaces
ListDataSources
ListFunctions
ListGraphqlApis
ListResolvers
ListTagsForResource
ListTypes
PutGraphqlApiEnvironmentVariables
StartSchemaCreation
TagResource
UntagResource
UpdateApi
UpdateApiCache
UpdateApiKey
UpdateChannelNamespace
UpdateDataSource
UpdateFunction
UpdateGraphqlApi
UpdateResolver
UpdateType
CloudFormation
The CloudFormation engine provisions these resource types via this service:
AWS::AppSync::ApiKey
AWS::AppSync::DataSource
AWS::AppSync::FunctionConfiguration
AWS::AppSync::GraphQLApi
AWS::AppSync::GraphQLSchema
AWS::AppSync::Resolver
See CloudFormation engine for intrinsic support and lifecycle details.
Known limitations
- GraphQL execution is a best-effort emulation — a regex-based parser with auto-detected DynamoDB ops and Lambda resolvers/authorizers; VTL request/response mapping templates are stored but not interpreted.
Source
ministack/services/appsync.py
Read the source to verify the ops list above — dispatch tables and handler functions are the ground truth.