Sceptre/sceptre

Better error handling with invalid templates

zaro0508 opened this issue · 1 comments

zaro0508 commented

Subject of the issue

The template handler does not provide a helpful message when sceptre cannot resolve a template from an http source. It would be nice to improve the error handling for that.

Your environment

  • version of sceptre: 3.1
  • version of python: 3.9
  • which OS/distro: MAC OSX

Steps to reproduce

  1. Create a sceptre config and reference a non-existing template using the http template handler

contents of dev/my-template.yaml:

template:
  type: http
  url: https://my-bucket.s3.amazonaws.com/templates/my-template.yaml
stack_name: my-stack
  1. run sceptre launch dev
    get the following message..
"An error occurred (ValidationError) when calling the UpdateStack operation: Template format error: unsupported structure."
  1. run sceptre launch dev/mytemplate.yaml will output the following message..
---
<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>NoSuchKey</Code><Message>The specified key does not exist.</Message><Key>templates/my-template.yaml</Key><RequestId>YSEQKP3YV3RZ9FEJ</RequestId><HostId>Tc/l2Ne92PC1WZ3zoa4HhydMjuk3PRh+puZ0CAaC8YvnthVPYpBJiLBFQpbIFfSG+7+3b7LA5N4=</HostId></Error>

Expected behaviour

More helpful message would be nice.

jfalkenstein commented

@zaro0508 What happens if you run this with --debug? A lot of times that shows a much more helpful stacktrace and maybe other info too.