外部Lambda呼び出し(Python)

call_external_lambda.py

# https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/lambda.html

#呼び出されるLambda(関数名：sample-lambda)
#   Roleに必要なPolicy
#   ・AWSLambdaBasicExecutionRole
def lambda_handler(event, context):
    return {'test':'test'}

# 呼び出すLambda
#   Roleに必要なPolicy
#   ・AWSLambdaBasicExecutionRole
#   ・AWSLambdaRole
import json
import boto3

def lambda_handler(event, context):
    call_external_lambda2(event)
    result = call_external_lambda(event)
    print(result)
    
    return result['test']

def call_external_lambda(event):
    request = json.dumps(event)
    client = boto3.client('lambda')
    response = client.invoke(
        FunctionName='sample-lambda',
        InvocationType='RequestResponse',
        Payload=request
    )
    return json.loads(response['Payload'].read())

# 非同期での実行。ARNを指定して実行もできる。
def call_external_lambda2(event):
    request = json.dumps(event)
    client = boto3.client('lambda')
    response = client.invoke(
        FunctionName='arn:aws:lambda:ap-northeast-1:xxxxx:function:sample-lambda:alias1',
        InvocationType='Event',
        Payload=request
    )
    return 'ok'