5

I'm writing a mobile application in Swift 3 and using AWS APIGateway, Lambda and RDS. In the POST method, I'm passing a unique identifier in one of the elements of the body such as:

us-east-1:xxxxxxxx-55b0-4917-82e3-85b3b093fa9c

However, in a GET method, I'm using a Request Path to retrieve this user record and passing this value. However, I'm guessing it's getting encoded since it's a request path and resulting with:

us-east-1%3Axxxxxxxx-55b0-4917-82e3-85b3b093fa9c

Once it hits Lambda this way (and my RDS), it will not find the record due to the escaping of the colon. As such, can I "unescape" this value in the Integration Request template?

I've tried a template such as:

#set($inputRoot = $input.path('$')) { "user_identity" : "$util.decodeURIComponent($input.params('useridentity'))" }

However, that doesn't work. I get the following in my logs:

Thu Aug 17 02:32:47 UTC 2017 : HTTP Method: GET, Resource Path: /user/us-east-1%3Axxxxxxxx-55b0-4917-82e3-85b3b093fa9c Thu Aug 17 02:32:47 UTC 2017 : Endpoint request body after transformations: { "user_identity" : "" }

I've also tried using decodeURI but that gives me the same result. What am I missing here?

Improve this question

1 Answer 1

Reset to default
7

Dang! I literally found the answer a few minutes after I posted this. Here was the solution:

#set($inputRoot = $input.path('$')) { "user_identity" : "$util.urlDecode($input.params('useridentity'))" }

The urlDecode function did the trick. I hope this helps someone else!!

Improve this answer
Sign up to request clarification or add additional context in comments.

1 Comment

Not Dang! This helped a lot. Also FYI for those coming to this question, if you typo the function call above, it will just silently return an empty string, rather than some type of error.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.