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@gerhard gerhard commented Jul 30, 2025

If varnish is slower to start, varnish-json-response can fail instantly and trigger a vector failure which results in a zombie sh process that overmind does not seem to handle well.

Until this coproc shortcut gets replaced by individual processes handled by runit, and svlog handling logs & rotation, this fix will have to do for now.

Summary by CodeRabbit

  • Bug Fixes
    • Improved reliability and error handling for log processing, ensuring proper cleanup and clearer error messages if the logging service fails to start.

@gerhard gerhard added this to the 1.0 milestone Jul 30, 2025
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coderabbitai bot commented Jul 30, 2025

Walkthrough

The update revises the shell command used for the "logs" process in the Procfile within the app() method of the Pipely struct. The new command improves error handling, renames the coprocess, and ensures proper cleanup by trapping script exit and conditionally killing the coprocess if started.

Changes

Cohort / File(s) Change Summary
Procfile Command Update
dagger/main.go
Modified the "logs" process command string: renamed coprocess, added error handling, and improved cleanup logic.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A bashful bunny tweaks the shell,
With traps and checks to make it well.
Logs now flow with tidy grace,
Coprocess cleaned—no messy trace!
A hop, a fix, a gentle cheer,
For Pipely’s logs are crystal clear.
🐇✨

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📒 Files selected for processing (1)
  • dagger/main.go (1 hunks)
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  • dagger/main.go
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Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 3553723 and 7935ddb.

📒 Files selected for processing (1)
  • dagger/main.go (1 hunks)
🧰 Additional context used
🧠 Learnings (1)
dagger/main.go (1)

Learnt from: gerhard
PR: #18
File: dagger/main.go:292-304
Timestamp: 2025-07-03T08:51:11.320Z
Learning: When Go tools in dagger/main.go are pinned to specific commit hashes rather than release tags, this is intentional to access newer changes not yet included in releases. Avoid suggesting updates to release tags when commits are used, as the commits likely contain important unreleased features or fixes.

If varnish is slower to start, varnish-json-response can fail
instantly and trigger a vector failure which results in a zombie sh
process that overmind does not seem to handle well.

Until this coproc shortcut gets replaced by individual processes handled
by runit, and svlog handling logs & rotation, this fix will have to do
for now.

Signed-off-by: Gerhard Lazu <gerhard@changelog.com>
@gerhard gerhard force-pushed the better-handle-varnish-slow-start branch from 7935ddb to 77fcf29 Compare July 30, 2025 07:06
@gerhard gerhard merged commit 19c29d6 into main Jul 30, 2025
4 checks passed
@gerhard gerhard deleted the better-handle-varnish-slow-start branch July 30, 2025 07:09
@gerhard gerhard changed the title Better handle varnish-json-response failing on startup Handle varnish-json-response failing on startup Jul 30, 2025
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2 participants