update changelog for 0.23 release

[kradalby]

🥳 🚀 🎉

Summary by CodeRabbit

• New Features

  • Introduced new mapper and poller logic for efficient "delta" updates, reducing unnecessary data transmission.

• Bug Fixes

  • Addressed various bugs following improvements to the testing framework.

• Documentation

  • Updated changelog to reflect significant changes and enhancements in version 0.23.0.

• Chores

  • Undertook a major overhaul of the codebase to address technical debt and improve overall functionality.

[coderabbitai]

Walkthrough

The changes in this pull request introduce a comprehensive overhaul of the codebase for version 0.23.0, released on September 18, 2023. The update includes significant rewrites and functional changes to Headscale, aimed at addressing technical debt and enhancing system performance. A new mapper and poller logic has been implemented to facilitate "delta" updates, allowing the application to communicate only changes in node states. The release involved extensive modifications, with a notable number of files altered and lines of code added or deleted. Bug fixes have also been included, reinforcing the need for thorough testing.

Changes

Files Changed	Change Summary
.../CHANGELOG.md	Updated for version 0.23.0, summarising significant changes.
.../src/MapperLogic/*	Introduced new mapper logic for delta updates.
.../src/PollerLogic/*	Implemented new poller logic to enhance node communication.
.../tests/*	Bug fixes and improvements to the test harness.

Possibly related PRs

• various doc updates in prep for 0.23 #2091: This PR focuses on various documentation updates in preparation for version 0.23, which aligns with the main PR's release of version 0.23.
• Update documentation for 0.23 #2096: This PR updates documentation to reflect changes associated with version 0.23, directly linking it to the main PR's significant overhaul and release cycle.

🐇 In the meadow, changes bloom,
A codebase fresh, dispelling gloom.
With mappers new and pollers bright,
Delta updates take their flight.
Bugs be gone, let testing start,
A leap of joy, a rabbit's heart! 🐇

---

Recent review details

Configuration used: .coderabbit.yaml
Review profile: CHILL

Commits

Files that changed from the base of the PR and between ed78ecd and 71595f5.

Files selected for processing (1)

• CHANGELOG.md (2 hunks)

Additional context used

LanguageTool

CHANGELOG.md

[style] ~5-~5: Would you like to use the Oxford spelling “reorganization”? The spelling ‘reorganisation’ is also correct.
Context: ...elease was intended to be mainly a code reorganisation and refactoring, significantly improvin...

(OXFORD_SPELLING_Z_NOT_S)

---

[style] ~6-~6: The phrase ‘a lot of’ might be wordy and overused. Consider using an alternative.
Context: ...d. It has ended up to be a release with a lot of rewrites and changes to the code base a...

(A_LOT_OF)

---

[style] ~6-~6: The phrase ‘a lot of’ might be wordy and overused. Consider using an alternative.
Context: ...a lot of technical debt and introducing a lot of improvements. This does come with some ...

(A_LOT_OF)

---

[typographical] ~20-~20: Consider isolating this adverbial phrase with commas.
Context: ...n, while we think the performance should in general be better, there might be regressions i...

(IN_FACT_COMMA_2)

---

[style] ~20-~20: Would you like to use the Oxford spelling “prioritized”? The spelling ‘prioritised’ is also correct.
Context: ... of the platform, particularly where we prioritised correctness over speed. There are also...

(OXFORD_SPELLING_Z_NOT_S)

Additional comments not posted (5)

CHANGELOG.md (5)

5-6: Significant release with extensive changes and improvements!

This release demonstrates a commendable effort in refactoring the codebase and addressing technical debt. It has evolved into a significant release with numerous rewrites and functional changes, introducing various improvements.

However, due to the inclusion of breaking changes, users should exercise caution when upgrading and thoroughly review the changelog.

Tools

LanguageTool

[style] ~5-~5: Would you like to use the Oxford spelling “reorganization”? The spelling ‘reorganisation’ is also correct.
Context: ...elease was intended to be mainly a code reorganisation and refactoring, significantly improvin...

(OXFORD_SPELLING_Z_NOT_S)

---

[style] ~6-~6: The phrase ‘a lot of’ might be wordy and overused. Consider using an alternative.
Context: ...d. It has ended up to be a release with a lot of rewrites and changes to the code base a...

(A_LOT_OF)

---

[style] ~6-~6: The phrase ‘a lot of’ might be wordy and overused. Consider using an alternative.
Context: ...a lot of technical debt and introducing a lot of improvements. This does come with some ...

(A_LOT_OF)

---

7-7: Clear instructions for a critical step!

Providing clear instructions to back up the database before upgrading is an excellent practice. It ensures that users are well-informed about this critical step, minimising the risk of data loss during the upgrade process.

Given the extensive changes in this release, backing up the database is absolutely essential.

---

Line range hint 11-19: Excellent summary of the major changes and improvements!

The summary provides a clear overview of the broad topics of changes in this release. The efforts towards improving the codebase structure, modularity, and performance are commendable.

The rewrites and enhancements in the policy, mapper, and poller packages indicate significant improvements in Headscale's core functionality.

The new feature of sending "delta" updates to clients is a notable addition that can potentially optimise performance and reduce network overhead.

Overall, the summary highlights the substantial work done in this release to enhance Headscale's architecture and capabilities.

Tools

LanguageTool

[uncategorized] ~18-~18: Possible missing comma found.
Context: ...nodes, changed nodes and removed nodes. Previously we sent the entire state of the network...

(AI_HYDRA_LEO_MISSING_COMMA)

---

[typographical] ~20-~20: Consider isolating this adverbial phrase with commas.
Context: ...n, while we think the performance should in general be better, there might be regressions i...

(IN_FACT_COMMA_2)

---

[style] ~20-~20: Would you like to use the Oxford spelling “prioritized”? The spelling ‘prioritised’ is also correct.
Context: ... of the platform, particularly where we prioritised correctness over speed. There are also...

(OXFORD_SPELLING_Z_NOT_S)

---

20-20: Transparent communication and engaging the community!

The paragraph demonstrates great transparency by openly communicating the scale of changes in the release and the potential for bugs despite having a good test harness. Setting realistic expectations about the possibility of issues and performance regressions is commendable.

Requesting help from the community in testing the release is an excellent way to engage users and gather valuable feedback from real-world usage scenarios. It fosters collaboration and helps ensure the stability and reliability of Headscale.

Acknowledging the trade-offs made between correctness and performance shows a strong commitment to software quality while being upfront about potential limitations. This honesty builds trust with the user community.

Overall, this paragraph exemplifies effective communication and community engagement practices.

Tools

LanguageTool

[typographical] ~20-~20: Consider isolating this adverbial phrase with commas.
Context: ...n, while we think the performance should in general be better, there might be regressions i...

(IN_FACT_COMMA_2)

---

[style] ~20-~20: Would you like to use the Oxford spelling “prioritized”? The spelling ‘prioritised’ is also correct.
Context: ... of the platform, particularly where we prioritised correctness over speed. There are also...

(OXFORD_SPELLING_Z_NOT_S)

---

Line range hint 22-24: Commitment to bug fixes, testing, and community contributions!

The efforts made to fix bugs and improve the test harness are highly appreciated. Implementing bug fixes is essential for maintaining the stability and reliability of Headscale.

Associating the bug fixes with the improvements made to the test harness in pull request #1460 is a great way to acknowledge the valuable contribution of the community in enhancing the software quality.

The emphasis on thoroughly testing the release due to the extensive modifications demonstrates the maintainers' strong commitment to delivering a high-quality release. It also highlights the importance of community participation in testing and providing feedback.

This paragraph showcases the collaborative nature of the Headscale project and the dedication of the maintainers to continuously improve the software based on community contributions and feedback.

Tools

LanguageTool

[uncategorized] ~18-~18: Possible missing comma found.
Context: ...nodes, changed nodes and removed nodes. Previously we sent the entire state of the network...

(AI_HYDRA_LEO_MISSING_COMMA)

---

[typographical] ~20-~20: Consider isolating this adverbial phrase with commas.
Context: ...n, while we think the performance should in general be better, there might be regressions i...

(IN_FACT_COMMA_2)

---

[style] ~20-~20: Would you like to use the Oxford spelling “prioritized”? The spelling ‘prioritised’ is also correct.
Context: ... of the platform, particularly where we prioritised correctness over speed. There are also...

(OXFORD_SPELLING_Z_NOT_S)

---

Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. If you find it useful, would you consider giving us a shout-out on your favorite social media?

Share

• X
• Mastodon
• Reddit
• LinkedIn

Tips

Chat

There are 3 ways to chat with CodeRabbit:

• Review comments: Directly reply to a review comment made by CodeRabbit. Example:
  -- I pushed a fix in commit <commit_id>, please review it.
  -- Generate unit testing code for this file.
  • Open a follow-up GitHub issue for this discussion.
• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query. Examples:
  -- @coderabbitai generate unit testing code for this file.
  -- @coderabbitai modularize this function.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  -- @coderabbitai generate interesting stats about this repository and render them as a table.
  -- @coderabbitai read src/utils.ts and generate unit testing code.
  -- @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.
  -- @coderabbitai help me debug CodeRabbit configuration file.

Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

CodeRabbit Commands (Invoked using PR comments)

• @coderabbitai pause to pause the reviews on a PR.
• @coderabbitai resume to resume the paused reviews.
• @coderabbitai review to trigger an incremental review. This is useful when automatic reviews are disabled for the repository.
• @coderabbitai full review to do a full review from scratch and review all the files again.
• @coderabbitai summary to regenerate the summary of the PR.
• @coderabbitai resolve resolve all the CodeRabbit review comments.
• @coderabbitai configuration to show the current CodeRabbit configuration for the repository.
• @coderabbitai help to get help.

Other keywords and placeholders

• Add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.
• Add @coderabbitai summary to generate the high-level summary at a specific location in the PR description.
• Add @coderabbitai anywhere in the PR title to generate the title automatically.

Documentation and Community

• Visit our Documentation for detailed information on how to use CodeRabbit.
• Join our Discord Community to get help, request features, and share feedback.
• Follow us on X/Twitter for updates and announcements.