SAM: accessing s3 via api gateway doesn't work

[Basile001]

Hello,

SAM version:
C:\Users\Basile Grandperret>sam --version
SAM CLI, version 1.21.1C:\Users\Basile Grandperret>sam --version
SAM CLI, version 1.21.1

Today I tried to deploy my serverless stack locally with SAM but I encounter an error when I try to reach a static file in a S3 bucket via api - gateway. I will firstly post the message error and then I will try to explain my conf.

2021-03-19 14:41:29 * Running on http://127.0.0.1:8080/ (Press CTRL+C to quit)
Exception on /atlassian-connect.json
Traceback (most recent call last):
File "C:\Program Files\Amazon\AWSSAMCLI\runtime\lib\site-packages\flask\app.py", line 2447, in wsgi_app
response = self.full_dispatch_request()
File "C:\Program Files\Amazon\AWSSAMCLI\runtime\lib\site-packages\flask\app.py", line 1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Program Files\Amazon\AWSSAMCLI\runtime\lib\site-packages\flask\app.py", line 1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "C:\Program Files\Amazon\AWSSAMCLI\runtime\lib\site-packages\flask\_compat.py", line 39, in reraise
raise value
File "C:\Program Files\Amazon\AWSSAMCLI\runtime\lib\site-packages\flask\app.py", line 1950, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Program Files\Amazon\AWSSAMCLI\runtime\lib\site-packages\flask\app.py", line 1936, in dispatch_request
return self.view_functionshttp://rule.endpoint(**req.view_args)
File "C:\Program Files\Amazon\AWSSAMCLI\runtime\lib\site-packages\samcli\local\apigw\local_apigw_service.py", line 317, in _request_handler
self.lambda_runner.invoke(route.function_name, event, stdout=stdout_stream_writer, stderr=self.stderr)
File "C:\Program Files\Amazon\AWSSAMCLI\runtime\lib\site-packages\samcli\commands\local\lib\local_lambda.py", line 101, in invoke
function = self.provider.get(function_identifier)
File "C:\Program Files\Amazon\AWSSAMCLI\runtime\lib\site-packages\samcli\lib\providers\sam_function_provider.py", line 73, in get
raise ValueError("Function name is required")

My conf :
what appear in the console after > sam local start-api :

Mounting *********** at http://127.0.0.1:8080/api/********* [POST]
Mounting ***********-token-refresh at http://127.0.0.1:8080/api/****** [GET]
Mounting *********** at http://127.0.0.1:8080/api/***************{proxy+} [GET]
Mounting c*********** at http://127.0.0.1:8080/api/************ [GET, POST, PUT]
Mounting c***********e at http://127.0.0.1:8080/api/******************/{id} [DELETE, GET, PUT]
Mounting c***********e at http://127.0.0.1:8080/api/*****************/{id}/{proxy+} [POST, PUT]
Mounting c***********e at http://127.0.0.1:8080/api/**********************/{proxy+} [GET]
Mounting c***********r at http://127.0.0.1:8080/api/counters [GET]
Mounting None at http://127.0.0.1:8080/v1/webhook [POST]
Mounting None at http://127.0.0.1:8080/v1/postfunction [POST]
**Mounting None at http://127.0.0.1:8080/atlassian-connect.json [GET]**
Mounting None at http://127.0.0.1:8080/static/{proxy+} [GET]
Mounting ***********-html at http://127.0.0.1:8080/c*********** [GET]

In the integration request of the end point (all is generated by CDK of course) :

Integration type : AWS service
AWS service: S3
Method : Get
path override: *********************************A-Z/descriptors/atlassian-connect.json

template.yaml :

CSCLOCALRESOURCEATLASSIANCONNECTGET831FFFD1:
Type: AWS::ApiGateway::Method
Properties:
HttpMethod: GET
ResourceId:
Ref: CSCLOCALRESOURCEATLASSIANCONNECT0B5E68ED
RestApiId:
Ref: CSCLOCALAPI417A8661
*****
******
***
Integration:
*****
Type: AWS
Uri:
Fn::Join:
- ""
- - "arn:"
- Ref: AWS::Partition
- :apigateway:us-east-1:s3:path/
- Ref: CSCLOCALBUCKETfilebucket1C920510
- /descriptors/atlassian-connect.json

In local I have a directory with asset.**********, in the directory my file atlassian-connect.json. I have also the zipped lambda and calling them seems to work fine.

Thanks in advance.

Kind regards,
Basile GRANDPERRET

[moelasmar]

SAM CLI command sam local start-api is only able to locally simulate the calls to API gateway that only integrate with Lambda functions.

[jfuss]

SAM CLI does not emulate S3. #3265 may be of interest for this.

Closing as this isn't something we support and Plugins would be the way we would in the future.

[github-actions]

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