create_function¶

AppSync.Client.create_function(**kwargs)¶

Creates a Function object.

A function is a reusable entity. You can use multiple functions to compose the resolver logic.

Request Syntax

response = client.create_function(
    apiId='string',
    name='string',
    description='string',
    dataSourceName='string',
    requestMappingTemplate='string',
    responseMappingTemplate='string',
    functionVersion='string',
    syncConfig={
        'conflictHandler': 'OPTIMISTIC_CONCURRENCY'|'LAMBDA'|'AUTOMERGE'|'NONE',
        'conflictDetection': 'VERSION'|'NONE',
        'lambdaConflictHandlerConfig': {
            'lambdaConflictHandlerArn': 'string'
        }
    },
    maxBatchSize=123,
    runtime={
        'name': 'APPSYNC_JS',
        'runtimeVersion': 'string'
    },
    code='string'
)

Parameters

apiId (string) --
[REQUIRED]

The GraphQL API ID.
name (string) --
[REQUIRED]

The Function name. The function name does not have to be unique.
description (string) -- The Function description.
dataSourceName (string) --
[REQUIRED]

The Function DataSource name.
requestMappingTemplate (string) -- The Function request mapping template. Functions support only the 2018-05-29 version of the request mapping template.
responseMappingTemplate (string) -- The Function response mapping template.
functionVersion (string) -- The version of the request mapping template. Currently, the supported value is 2018-05-29. Note that when using VTL and mapping templates, the functionVersion is required.
syncConfig (dict) --
Describes a Sync configuration for a resolver.

Specifies which Conflict Detection strategy and Resolution strategy to use when the resolver is invoked.
- conflictHandler (string) --
  The Conflict Resolution strategy to perform in the event of a conflict.
  - OPTIMISTIC_CONCURRENCY : Resolve conflicts by rejecting mutations when versions don't match the latest version at the server.
  - AUTOMERGE : Resolve conflicts with the Automerge conflict resolution strategy.
  - LAMBDA : Resolve conflicts with an Lambda function supplied in the LambdaConflictHandlerConfig .
- conflictDetection (string) --
  The Conflict Detection strategy to use.
  - VERSION : Detect conflicts based on object versions for this resolver.
  - NONE : Do not detect conflicts when invoking this resolver.
- lambdaConflictHandlerConfig (dict) --
  The LambdaConflictHandlerConfig when configuring LAMBDA as the Conflict Handler.
  - lambdaConflictHandlerArn (string) --
    The Amazon Resource Name (ARN) for the Lambda function to use as the Conflict Handler.
maxBatchSize (integer) -- The maximum batching size for a resolver.
runtime (dict) --
Describes a runtime used by an Amazon Web Services AppSync pipeline resolver or Amazon Web Services AppSync function. Specifies the name and version of the runtime to use. Note that if a runtime is specified, code must also be specified.
- name (string) -- [REQUIRED]
  The name of the runtime to use. Currently, the only allowed value is APPSYNC_JS .
- runtimeVersion (string) -- [REQUIRED]
  The version of the runtime to use. Currently, the only allowed version is 1.0.0 .
code (string) -- The function code that contains the request and response functions. When code is used, the runtime is required. The runtime value must be APPSYNC_JS .

Return type

dict

Returns

Response Syntax

{
    'functionConfiguration': {
        'functionId': 'string',
        'functionArn': 'string',
        'name': 'string',
        'description': 'string',
        'dataSourceName': 'string',
        'requestMappingTemplate': 'string',
        'responseMappingTemplate': 'string',
        'functionVersion': 'string',
        'syncConfig': {
            'conflictHandler': 'OPTIMISTIC_CONCURRENCY'|'LAMBDA'|'AUTOMERGE'|'NONE',
            'conflictDetection': 'VERSION'|'NONE',
            'lambdaConflictHandlerConfig': {
                'lambdaConflictHandlerArn': 'string'
            }
        },
        'maxBatchSize': 123,
        'runtime': {
            'name': 'APPSYNC_JS',
            'runtimeVersion': 'string'
        },
        'code': 'string'
    }
}

Response Structure

(dict) --
- functionConfiguration (dict) --
  
  The Function object.
  - functionId (string) --
    
    A unique ID representing the Function object.
  - functionArn (string) --
    
    The Amazon Resource Name (ARN) of the Function object.
  - name (string) --
    
    The name of the Function object.
  - description (string) --
    
    The Function description.
  - dataSourceName (string) --
    
    The name of the DataSource .
  - requestMappingTemplate (string) --
    
    The Function request mapping template. Functions support only the 2018-05-29 version of the request mapping template.
  - responseMappingTemplate (string) --
    
    The Function response mapping template.
  - functionVersion (string) --
    
    The version of the request mapping template. Currently, only the 2018-05-29 version of the template is supported.
  - syncConfig (dict) --
    
    Describes a Sync configuration for a resolver.
    
    Specifies which Conflict Detection strategy and Resolution strategy to use when the resolver is invoked.
    - conflictHandler (string) --
      
      The Conflict Resolution strategy to perform in the event of a conflict.
      - OPTIMISTIC_CONCURRENCY : Resolve conflicts by rejecting mutations when versions don't match the latest version at the server.
      - AUTOMERGE : Resolve conflicts with the Automerge conflict resolution strategy.
      - LAMBDA : Resolve conflicts with an Lambda function supplied in the LambdaConflictHandlerConfig .
    - conflictDetection (string) --
      
      The Conflict Detection strategy to use.
      - VERSION : Detect conflicts based on object versions for this resolver.
      - NONE : Do not detect conflicts when invoking this resolver.
    - lambdaConflictHandlerConfig (dict) --
      
      The LambdaConflictHandlerConfig when configuring LAMBDA as the Conflict Handler.
      - lambdaConflictHandlerArn (string) --
        
        The Amazon Resource Name (ARN) for the Lambda function to use as the Conflict Handler.
  - maxBatchSize (integer) --
    
    The maximum batching size for a resolver.
  - runtime (dict) --
    
    Describes a runtime used by an Amazon Web Services AppSync pipeline resolver or Amazon Web Services AppSync function. Specifies the name and version of the runtime to use. Note that if a runtime is specified, code must also be specified.
    - name (string) --
      
      The name of the runtime to use. Currently, the only allowed value is APPSYNC_JS .
    - runtimeVersion (string) --
      
      The version of the runtime to use. Currently, the only allowed version is 1.0.0 .
  - code (string) --
    
    The function code that contains the request and response functions. When code is used, the runtime is required. The runtime value must be APPSYNC_JS .

Exceptions

AppSync.Client.exceptions.ConcurrentModificationException
AppSync.Client.exceptions.NotFoundException
AppSync.Client.exceptions.UnauthorizedException
AppSync.Client.exceptions.InternalFailureException

Table Of Contents

create_function¶