fix: Read input as bytes in MsgSpec Singer message reader

[edgarrmondragon]

Summary by Sourcery

Make MsgSpecReader consume raw bytes from stdin by updating its generic parameter, default_input, and deserialize_json signature, and improve error messaging

Bug Fixes:

• Include repr of the input line in JSON parse error messages

Enhancements:

• Change MsgSpecReader to use sys.stdin.buffer as default_input
• Update GenericSingerReader parameter and deserialize_json to handle bytes instead of str

[sourcery-ai]

Reviewer's Guide

This PR refactors MsgSpecReader to read and deserialize raw bytes from stdin instead of strings and enhances error reporting by formatting failed lines with repr.

Class diagram for updated MsgSpecReader and related methods

classDiagram
    class GenericSingerReader~T~ {
    }
    class MsgSpecReader {
        +default_input: IO[bytes]
        +deserialize_json(line: bytes) dict
    }
    GenericSingerReader <|-- MsgSpecReader

Loading

Class diagram for deserialize_json method signature change

classDiagram
    class MsgSpecReader {
        +deserialize_json(line: bytes) dict
    }

Loading

File-Level Changes

Change	Details	Files
Support raw bytes input in MsgSpecReader	Changed generic type parameter from str to bytes Added default_input property returning sys.stdin.buffer Updated deserialize_json signature to accept bytes	singer_sdk/contrib/msgspec.py
Improve error logging for unparseable lines	Logged exception context using logger.exception Formatted the error message with repr(line) via {line!r}	singer_sdk/contrib/msgspec.py

---

Tips and commands

Interacting with Sourcery

• Trigger a new review: Comment @sourcery-ai review on the pull request.
• Continue discussions: Reply directly to Sourcery's review comments.
• Generate a GitHub issue from a review comment: Ask Sourcery to create an
  issue from a review comment by replying to it. You can also reply to a
  review comment with @sourcery-ai issue to create an issue from it.
• Generate a pull request title: Write @sourcery-ai anywhere in the pull
  request title to generate a title at any time. You can also comment
  @sourcery-ai title on the pull request to (re-)generate the title at any time.
• Generate a pull request summary: Write @sourcery-ai summary anywhere in
  the pull request body to generate a PR summary at any time exactly where you
  want it. You can also comment @sourcery-ai summary on the pull request to
  (re-)generate the summary at any time.
• Generate reviewer's guide: Comment @sourcery-ai guide on the pull
  request to (re-)generate the reviewer's guide at any time.
• Resolve all Sourcery comments: Comment @sourcery-ai resolve on the
  pull request to resolve all Sourcery comments. Useful if you've already
  addressed all the comments and don't want to see them anymore.
• Dismiss all Sourcery reviews: Comment @sourcery-ai dismiss on the pull
  request to dismiss all existing Sourcery reviews. Especially useful if you
  want to start fresh with a new review - don't forget to comment
  @sourcery-ai review to trigger a new review!

Customizing Your Experience

Access your dashboard to:

• Enable or disable review features such as the Sourcery-generated pull request
  summary, the reviewer's guide, and others.
• Change the review language.
• Add, remove or edit custom review instructions.
• Adjust other review settings.

Getting Help

• Contact our support team for questions or feedback.
• Visit our documentation for detailed guides and information.
• Keep in touch with the Sourcery team by following us on X/Twitter, LinkedIn or GitHub.

[sourcery-ai]

Hey @edgarrmondragon - I've reviewed your changes and they look great!

---

Sourcery is free for open source - if you like our reviews please consider sharing them ✨

• X
• Mastodon
• LinkedIn
• Facebook

_{Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.}

[codecov]

Codecov Report

❌ Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 92.29%. Comparing base (e753b8d) to head (48cc3d4).
⚠️ Report is 78 commits behind head on main.

Files with missing lines	Patch %	Lines
singer_sdk/contrib/msgspec.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3140      +/-   ##
==========================================
- Coverage   92.30%   92.29%   -0.02%     
==========================================
  Files          63       63              
  Lines        5343     5345       +2     
  Branches      677      677              
==========================================
+ Hits         4932     4933       +1     
- Misses        290      291       +1     
  Partials      121      121              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[codspeed-hq]

CodSpeed Performance Report

Merging #3140 will not alter performance

_{Comparing edgarrmondragon/fix/msgspec-bytes (48cc3d4) with main (e753b8d)}

Summary

✅ 8 untouched benchmarks