API gateway proxy integration with lambda function in CDK

Question

When I set CDK as following , and deploy them. the two content was generated in api gateway.

    new LambdaRestApi(this,"api",{
      handler:lambdaFunction
    });

I totally beginner this kind of API manipulation and have questions.

① what is {proxy+} ?

② what is the difference between following two API ?

③ How can I see payload which will be passed to lambda function ?

If someone has opinion or materials please let me know.

Thanks

Marcin · Accepted Answer · 2021-05-24 03:58:19Z

2

The purpose of the proxy+ is to enable the following URLs to work with your function:

https://44444.execute-api.gggg.amazonaws.com/test-invoke-stage/some/path1/path3
https://44444.execute-api.gggg.amazonaws.com/test-invoke-stage
https://44444.execute-api.gggg.amazonaws.com/test-invoke-stage/test/gggg
https://44444.execute-api.gggg.amazonaws.com/test-invoke-stage/test/5

without proxy+ only the following will work:

https://44444.execute-api.gggg.amazonaws.com/test-invoke-stage

So the proxy+ is able to accept everything past /test-invoke-stage as it matches every path starting with /test-invoke-stage.

edited May 24, 2021 at 3:58

answered May 24, 2021 at 3:47

Marcin

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2 Comments

Heisenberg Over a year ago

Thank you for comment. I wonder why the two component were generated. it looks like only {proxy+} is needed ! thanks.

Marcin Over a year ago

@Heisenberg I'm not sure how CDK does this under the hood.

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