在本地构建和测试无服务器应用程序

AWSTemplateFormatVersion : '2010-09-09'Transform: AWS::Serverless-2016-10-31Resources:  VotesTable:    Type: "AWS::Serverless::SimpleTable"  VoteSpacesTabs:    Type: "AWS::Serverless::Function"    Properties:      Runtime: python3.6      Handler: lambda_function.lambda_handler      Policies: AmazonDynamoDBFullAccess      Environment:        Variables:          TABLE_NAME: !Ref VotesTable      Events:        Vote:          Type: Api          Properties:            Path: /            Method: post

import osimport osimport jsonimport boto3votes_table = boto3.resource('dynamodb').Table(os.getenv('TABLE_NAME'))
def lambda_handler(event, context):    print(event)    if event['httpMethod'] == 'GET':        resp = votes_table.scan()        return {'body': json.dumps({item['id']: int(item['votes']) for item in resp['Items']})}    elif event['httpMethod'] == 'POST':        try:            body = json.loads(event['body'])        except:            return {'statusCode': 400, 'body': 'malformed json input'}        if 'vote' not in body:            return {'statusCode': 400, 'body': 'missing vote in request body'}        if body['vote'] not in ['spaces', 'tabs']:            return {'statusCode': 400, 'body': 'vote value must be "spaces" or "tabs"'}
        resp = votes_table.update_item(            Key={'id': body['vote']},            UpdateExpression='ADD votes :incr',            ExpressionAttributeValues={':incr': 1},            ReturnValues='ALL_NEW'        )        return {'body': "{} now has {} votes".format(body['vote'], resp['Attributes']['votes'])}

import osimport jsonimport boto3if os.getenv("AWS_SAM_LOCAL"):    votes_table = boto3.resource(        'dynamodb',        endpoint_url="http://docker.for.mac.localhost:8000/"    ).Table("spaces-tabs-votes")else:    votes_table = boto3.resource('dynamodb').Table(os.getenv('TABLE_NAME'))

$ sam package --template-file template.yaml --s3-bucket MYAWESOMEBUCKET --output-template-file package.yamlUploading to 144e47a4a08f8338faae894afe7563c3  90570 / 90570.0  (100.00%)Successfully packaged artifacts and wrote output template to file package.yaml.Execute the following command to deploy the packaged templateaws cloudformation deploy --template-file package.yaml --stack-name $ sam deploy --template-file package.yaml --stack-name VoteForSpaces --capabilities CAPABILITY_IAMWaiting for changeset to be created..Waiting for stack create/update to completeSuccessfully created/updated stack - VoteForSpaces