davsclaus opened a new pull request, #29974:
URL: https://github.com/apache/camel/pull/29974
_Claude Code on behalf of davsclaus_
The Log tab did not follow after a while on another tab. It showed `● live`
but played lines from up to a minute earlier for several seconds. This happened
after browsing the Diagram and then opening the Log tab, and with `Space` when
a pause was followed by a while on another tab.
**Why.** The log file is only read while the Log tab is on screen, or the
log is pinned (`CamelMonitor.refreshLogData`). Each refresh reads at most 64
KB. A busy log grows well beyond that while another tab is shown: a demo that
logs a WARN with a stack trace about once a second wrote 480 KB in a minute.
Back on the Log tab, the reading went on from where it stopped, 64 KB at a
refresh. The tab played the lines it had missed for about 8 seconds before it
reached the present.
**Fix.** In `LogTab.refreshFromFile`, while following, a log more than one
read (64 KB) behind starts again at its end, as when the tab opens. The skipped
lines are still there: `Home` reads them, as it reads older lines today.
Paused, the tab reads on from where it was, so the lines on screen stay
continuous.
`refreshFromFile` now takes the path of the log, so a test can read a file
of its own. The read cap is `MAX_READ_BYTES`.
**Tests.**
- `LogTabTailTest` has two new tests:
- Following, a log that grew four reads' worth shows its newest line after
one refresh, and `Home` still gets every line it skipped. This test fails
without the fix.
- Paused, the lines on screen stay and the log is read on a part at a time.
- Checked live with that demo:
- After a minute on the Diagram, the newest line on the Log tab was
current within a second; before, it was about a minute old.
- After a pause, a while on the Diagram and `Space`, it went straight to
the present and kept up with the file.
- The module's 2576 tests pass.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
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