Commit Graph
7 Commits
Author SHA1 Message Date
ChuckandClaude Opus 5 863e4a1ecd consolidate(perf): cut SD writes, log volume, and metrics churn (#486)
* fix(plugins): one bad metrics cache entry should not stop every plugin

Caught live on a rig: every plugin failing, once each, continuously.

    ERROR - src.plugin_system.plugin_manager - plugin geochron operation failed:
    ResourceMetrics.__init__() got an unexpected keyword argument
    'consecutive_failures'

    ERROR - ... plugin text-display operation failed: ...
    ERROR - ... plugin news operation failed: ...
    ERROR - ... plugin odds-ticker operation failed: ...

with /api/v3/health reporting plugin_system: not_initialized while the display
process itself kept running and updating the panel.

`consecutive_failures` is a plugin_health field, not a metrics one.
get_metrics() does ResourceMetrics(**cached), which raises TypeError on a
single unrecognised key, and that exception escapes into plugin_manager and is
reported per plugin. One malformed cache entry takes the whole plugin system
down.

How a health-shaped record came to sit under a plugin_metrics key on that
machine is not established, and I could not finish the diagnosis: the rig went
back into its EIO failure mode partway through -- SSH resetting pre-banner,
systemctl unexecutable -- while the web API kept answering from RAM. Checked
before that: the cache files on disk are correctly shaped and separate, and
CacheManager.get() returns the right record for each key, so it is not a live
key collision. A restored backup mixing two machines' caches is the likeliest
explanation, and that rig had one restored onto it.

Either way the loader should not be brittle enough for the answer to matter.
plugin_health already repairs its records field by field rather than trusting
what is on disk; this does the same. Known fields are kept, unknown ones are
dropped and named once in the log so a genuine schema change stays visible
rather than being silently discarded, and a non-mapping entry no longer raises.

Keeping the known fields matters: discarding the record wholesale would throw
away real call counts and timings because of an unrelated stray key.

Mutation-checked: restoring ResourceMetrics(**cached) fails 6 checks, dropping
the whole record fails the field-preservation check, and dropping unknown
fields silently fails the logging check. 28 tests pass across the resource
monitor and plugin health suites.

* perf(health): stop rewriting a health record on every healthy cycle

Every successful plugin update called record_success(), which persisted the
record unconditionally. In steady state the only fields that had changed were
total_successes and last_success_time -- a counter and a timestamp that
health_monitor surfaces for display and that nothing reads back after a
restart. Nothing alerts on the age of last_successful_update; it is carried in
the metrics dataclass and shown.

Measured on a rig running 24 plugins, all steady-state (0 consecutive
failures, circuit closed): a five-minute sample caught 22 health-file
rewrites, about 4.4 a minute or 6,300 a day. Each write is ~400 bytes through
cache_manager.set(), which writes a file per call, so each one costs a
filesystem block plus an ext4 journal write.

That lands on an SD card, where the unit of cost is an erase-block cycle
rather than the bytes involved, and where wear is what eventually kills the
card. Two cards have already failed on the other rig with the same
signature -- unreadable block device, EIO on exec, sshd unable to read its
host keys.

The circuit breaker still has to survive a restart, so the write is kept for
exactly the fields it is rebuilt from: consecutive_failures, circuit_state,
circuit_opened_time, half_open_start_time. A failure, a circuit opening and a
recovery are all still written the moment they happen. In-memory state is
updated every time either way, so the health API and web UI show what they
always did.

Tested: 100 healthy cycles now perform zero writes after the first, the
counters remain accurate in memory, and a failure, a recovery and a
half-open-to-closed transition each still reach disk. One test kills and
rebuilds the tracker from the cache to prove the breaker's state genuinely
survives what is no longer written.

Mutation-checked both ways: persisting unconditionally again fails the
steady-state test, and widening _DURABLE_FIELDS to include last_success_time
fails it too. The 46 existing health tests pass.

(cherry picked from commit 14abea2d24)
(cherry picked from commit 0f77bd2345)

* perf(vegas): trace the content path at DEBUG instead of INFO

plugin_adapter narrates every step of acquiring content from every plugin --
"Has get_vegas_content", "Native: calling get_vegas_content()", "Native
content returned None", "Has scroll_helper", per-item sizes -- once per plugin
per cycle, all at INFO.

Measured on a live rig: 13,408 log lines an hour, of which 13,366 were INFO
and 35 were WARNING. Roughly 223 lines a minute of string formatting on a Pi
that is also driving the panel, written through journald to the SD card, with
the 35 lines that actually indicate a problem buried among them.

Top repeated messages in that hour:

    717  Scroll progress: elapsed=... total_scrolled=.../... px
    399  [plugin] --> INCLUDED in Vegas scroll
    323  [plugin] content_type=static, display_mode=fixed
    195  [plugin] Has get_vegas_content: True
    195  [plugin] Native: calling get_vegas_content()
    168  [plugin] Native: get_vegas_content() returned None
    168  [plugin] Native content returned None        <- the same fact, twice

54 logger.info calls in plugin_adapter become logger.debug, along with the
per-frame scroll-progress line in scroll_helper. Together those are 3,174 of
the 13,408 lines an hour, a 23% cut, and the ~3,600 odds-manager lines are
addressed separately by ledmatrix-plugins#300.

Nothing is lost: the 19 warning/error/exception calls in the module are
untouched, so real failures still surface at their own level. This is a
logging-level change only -- no control flow, no behaviour.

One INFO call is deliberate and stays. The padding-strip message picks its
level at runtime (`logger.warning if (left and right) else logger.info`) and
test_vegas_plugin_adapter.py pins that choice; it survives because it is not a
direct logger.info call site. That test still passes.

Mutation-checked both ways: reintroducing a single INFO trace fails the guard,
and demoting the warning/error calls along with the trace fails a second guard
written for exactly that mistake. 537 vegas and scroll tests pass.

(cherry picked from commit e496d95dfe)
(cherry picked from commit 8d1e43c15a)

* fix(logging): give the journal the real severity of each line

Everything this process writes to stdout reaches the journal as PRIORITY=6,
whatever the Python level was, because journald has nothing else to go on.
Measured on a live rig over 24 hours:

    lines containing " - ERROR - "      55
    lines containing " - WARNING - "    13
    journald PRIORITY recorded          6, for every one of them

So `journalctl -p err -u ledmatrix` returns nothing while errors are being
logged, and `-p warning` likewise. Triage falls back to grepping message text,
which is slower and unreliable: during this audit a search for "oom" matched
the radar logging "zoom=9" twenty-four times and briefly looked like the OOM
killer had been firing.

systemd reads a leading "<N>" on each stdout line and takes it as the priority
(sd-daemon(3)), so a formatter that prefixes one costs no dependency. Every
line of a multi-line record is tagged, not just the first -- the journal splits
them, and an untagged continuation reverts to the default, which would leave
the body of a traceback filed as informational while its first line was an
error.

Applied only when JOURNAL_STREAM is set, which systemd sets for services whose
output it captures. Run from a terminal, in the emulator or under pytest the
prefixes would be literal noise, and the file handler keeps the plain
formatter for the same reason.

Mutation-checked three ways: prefixing unconditionally fails the
outside-systemd test, prefixing only the first line fails the multi-line test,
and mapping ERROR to 6 fails the level mapping. 39 tests pass across the
logging suites.

(cherry picked from commit 780fca6365)

* fix(logging): let callers see through the journald formatter wrapper

CI caught what local testing could not: two existing tests in
test_logging_config.py assert that setup_logging() selected a
StructuredFormatter or a ContextualFormatter, by checking the console
handler's formatter directly. Wrapping that formatter to tag each line with
its syslog priority makes those assertions false.

They passed locally and failed on the runner because the wrapper is applied
only when JOURNAL_STREAM is set -- absent in a terminal, present in CI. An
environment-dependent break, which is the kind that gets shipped.

The wrapper now exposes the formatter it delegates to, and those two tests
look through it. They are about which formatter format_type selects, and that
behaviour is unchanged; only the object they have to reach for moved.

Verified both ways this time: 39 tests pass with JOURNAL_STREAM set and with
it unset.

* perf(plugins): stop rewriting a plugin's metrics file on every call

Plugin metrics were persisted to the cache inside monitor_call, so every
call by every plugin rewrote a small JSON file. Measured on a running rig:
one plugin's plugin_metrics file changed nine times a minute, with fourteen
such files active. Each is around 350 bytes, which on ext4 costs a 4KB block
plus a journal entry, so the cost is dominated by the write itself rather
than the payload. Cache writes accounted for essentially all of that device's
2.4 MB/min of SD traffic, on a card that wears out and has already failed
twice on the other rig.

Metrics cannot be de-duplicated the way health state can, because call_count
changes on every call and the timings usually do too. So they are rate-limited
instead: at most one write per plugin per 30 seconds.

The in-memory copy stays authoritative and exact -- a plugin's call_count is
still precise the instant after it runs. Only the cross-process snapshot the
web UI reads is delayed, and telemetry up to half a minute old is still a fair
description of a long-running plugin.

reset_metrics clears the throttle timestamp, so a reset is not left showing a
deleted key for the rest of the interval.

Extrapolating the sampled rate, this takes metric writes from roughly 126 a
minute to 28. Health persistence, the other half of the churn, is handled
separately in #475.

Verified by reverting the throttle: the churn test then reports 50 writes for
50 calls. 88 tests pass across resource monitor, plugin system and web API.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01STMbQE4YctTacQXfbYqKuW

* fix: use a monotonic clock and only mark metrics persisted once written

Two review findings on the throttle, both right.

The interval compared wall-clock timestamps. These devices have no RTC, so
the clock jumps by however far off boot-time was the moment NTP first syncs
-- a forward jump would allow an early write, a backward one would stall the
snapshot well past the interval. time.monotonic() is not subject to either.

The timestamp was also recorded before cache_manager.set(). A set() that
raised would buy the next interval's silence without leaving a snapshot
behind, which is the one case where skipping the write is least affordable.
Recorded after the write lands instead, so a failure is retried on the next
call.

Verified by restoring the original ordering: the new test then reports one
write where two are expected.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01STMbQE4YctTacQXfbYqKuW

* Address all six review findings on the perf consolidation

CodeRabbit reported six; this is all six, checked against its own
"Actionable comments posted: 6" rather than against what I happened to
scroll past.

Three are real defects in the code:

1. _under_systemd() trusted the presence of JOURNAL_STREAM.

systemd publishes JOURNAL_STREAM as "dev:ino", and every child process
inherits it -- including one whose stdout has been redirected to a pipe
or a file. The variable outlives the descriptor it describes, so a
subprocess would decide it was talking to the journal and emit the "<N>"
priority prefixes as literal noise into that captured output. That is
exactly the noise the function exists to prevent. It now parses the pair
and fstats stdout, per systemd's own guidance, and returns False for
missing, malformed, mismatched, or unusable descriptors.

2. Cached metrics were not type-checked.

A dataclass does not enforce its annotations, so
ResourceMetrics(call_count="not a number") builds happily and only
fails later, deep inside monitor_call:

    TypeError: can only concatenate str (not "int") to str

Values are now coerced to their declared type at load, where there is
still a cache key to name in the warning, and a value that cannot be
coerced starts the plugin fresh instead of arming a delayed failure.
A numeric string is accepted rather than discarded -- a JSON round-trip
can widen an int, and that is recoverable.

3. The first metrics snapshot was skipped for the first 30s of uptime.

_persist_metrics used 0.0 as the "never written" default. monotonic() is
time since boot on Linux and systemd starts this service at boot, so
`now - 0.0 < 30` was true for the first half-minute of every run: the
throttle swallowed the very first write, the one that matters most after
a restart. The sentinel is now None and the interval is only applied when
a previous write exists.

Three are tests that could pass without testing anything:

4. test_health_write_churn's fake cache stored by reference, so the
   tracker kept mutating the object already in the store -- a record
   could look persisted when no write had happened, which is precisely
   what test_durable_state_survives_a_restart exists to detect. Both
   directions now deep-copy, like a cache that serialises to a file.
   Verified: disabling the one real cache write now fails three tests.

5. test_values_of_the_wrong_type_do_not_raise asserted only that a
   dataclass had been constructed, which was true with the bad value
   still in it. It now asserts the loaded metrics are usable -- the
   field is numeric, and arithmetic on it does not raise -- across four
   kinds of bad value.

6. test_vegas_log_volume counted "logger.error(" in the source text,
   which also matches comments, docstrings and string literals --
   including that module's own docstring, which names those levels. A
   real error call could be demoted with the tally unmoved. It now walks
   the AST, reusing the helper already in the file. Verified: demoting
   all 18 warning/error/exception calls now fails the test.

Verified: every fix mutation-checked by reverting it and confirming the
matching test fails.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01STMbQE4YctTacQXfbYqKuW

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-21 15:50:55 -04:00
ChuckandClaude Opus 5 ca26c1b83b fix(vegas): stop the width cap emitting fragments and stale windows (#446)
* fix(vegas): stop the width cap emitting fragments and stale windows

Two defects in the rotation that narrows an oversized plugin to its
width budget. Both were found while investigating "cut off early /
starts in the middle" reports and are the reason the cap is no longer
on by default; they still bite anyone who sets one.

A rotation's last window was whatever happened to be left over. Windows
are placed by walking forward from the previous one, with nothing
looking at the remainder, so a 1,840px stocks ticker against a 1,536px
budget split 1,492 + 348 -- every other appearance showed seven seconds
and cut. Absorb a remainder below half a budget into the window before
it. That overruns the budget by at most half, which is the better trade:
the budget guards against one plugin holding the panel for minutes, not
against a 20% overshoot. The floor is measured against the budget rather
than the panel because snapping to item boundaries already lands an
ordinary window short of it -- a 512px budget over 182px-pitch items
yields 348px windows, so an absolute floor merges windows that were
never fragments.

The stored offset also outlived the content it was recorded against. It
was a pixel column, reused verbatim after the plugin re-rendered, so
once anything ahead of it changed width the window pointed at unrelated
items -- observed as news refreshing 9,793px -> 9,505px mid-rotation.
Track the rotation as an index into the strip's item boundaries instead,
since the Nth boundary survives a digit appearing in a price, and record
alongside it what the offset indexes into: a row list, a boundary list,
or a column in a gapless image. A mismatch restarts the rotation rather
than reinterpreting the number, which also closes the case where one
plugin's row index was read back as a pixel column after its content
changed from several rows to one wide strip.

Replaying the four plugins that actually hit the cap on a live 512px
panel: no window is now a fragment, none exceeds 1.5 budgets, and every
rotation still covers the whole strip.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Udr6MfaFLUPhX5Fgo67Jf5

* fix(vegas): apply the runt floor to the multi-row rotation too

The floor only guarded the single-image path. I had reasoned the row
path could not produce a runt because it wraps, which is wrong: wrapping
only helps when the row wrapped to actually fits. Rows of 450, 450 and
100 against a 512px budget give the 100 a pass of its own -- two seconds
against nine, which is the symptom this branch exists to remove.

Reproduced before changing anything:

    pass 1: 450px    pass 2: 450px    pass 3: 100px

A window may now overrun the budget while it is still shorter than the
floor, bounded at the same 1.5 budgets the single-image path allows, so
the short row is carried with its neighbour instead of standing alone.

    pass 1: 450px    pass 2: 450px    pass 3: 550px

A next row too wide to absorb within that cap still leaves a short
window standing -- rows of 900 and 100 keep alternating. Merging them
would mean a window of nearly two budgets, and the rule that always
shows an oversized first row already makes the same trade.

Three regression tests: the reported shape, that the overrun stays
bounded when a row cannot be absorbed, and that absorbing never drops a
row from the rotation. The single-image path is untouched -- the four
plugins that actually hit the cap on a live panel replay identically.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Udr6MfaFLUPhX5Fgo67Jf5

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-10 09:41:25 -04:00
ChuckandClaude Sonnet 5 5b45f35888 Vegas mode: reclaim dead space and pace the rotation (#423)
* Vegas mode: reclaim dead space and pace the rotation

On a wide panel Vegas mode spent much of its time showing black. At 50px/s
on a 512px display, one display width of blank is 10.2 seconds, which makes
several long-standing behaviours expensive:

- ScrollHelper prepended a full display width of black as an "initial gap",
  charged once per cycle — 10.2s of black at the start of every rotation.
- Plugins without get_vegas_content() are captured off a full-display canvas,
  so their blank margins entered the ticker too. Measured: of-the-day drew
  35px of "No Data" on a 512px canvas (92% blank), youtube-stats 142px of
  content with 185px of black either side. Only the scroll_helper path had
  any trimming.
- Cycle transitions deliberately pushed a blank frame and then recomposed
  synchronously: 84ms at best, 4.8s at worst, every millisecond of it black.
- buffer_ahead doubled as the cycle size, so a 21-plugin install showed 3
  plugins per cycle and took ~7 cycles to come around.
- separator_width was applied between every image rather than at plugin
  boundaries, so a per-row ticker like the F1 scoreboard (116 images, which
  it renders 4px apart internally) got a 32px chasm between each row — and
  the width budget didn't count those gaps, so the plugin quietly occupied
  far more of the panel than intended.

Changes:

- src/vegas_mode/geometry.py: numpy column-ink primitives shared by the
  trimmer and the audit tool, so the number reported is the number acted on.
  A Python per-column loop over a 17,000px strip is far too slow for the
  render path.
- PluginAdapter trims every content path, not just scroll_helper. Only outer
  edges are cropped: interior blank columns are the plugin's own layout
  (logo left, score right) and closing them would corrupt the design. A
  plugin on a non-black background is inherently unaffected.
- ScrollHelper.create_scrolling_image takes an explicit lead_gap, still
  defaulting to display_width so the many standalone-ticker callers are
  unchanged. Vegas passes lead_in_width (default 0).
- Cycle end holds the last rendered frame instead of blanking, turning the
  recompose into a brief freeze rather than the panel switching off.
- plugins_per_cycle (default 6) is split from buffer_ahead, which goes back
  to being only a prefetch low-water mark.
- max_plugin_width_ratio (default 3x display width) caps one plugin's share
  of a cycle. Overflow is deferred, not discarded: a rotation offset advances
  each fetch so later rows appear on subsequent cycles. Single oversized
  images are cropped at a blank column so the cut misses glyphs.
- Composition groups images by plugin: rows are joined by intra_plugin_gap
  (default 8) and separator_width applies only between plugins. The width
  budget now counts those gaps.
- Plugin data updates no longer run on the Vegas render path.

All new settings are user-configurable in Display -> Vegas Scroll, including
min/max cycle duration and dynamic duration, which previously existed in code
but were reachable only by hand-editing config.json.

Measured with scripts/dev/vegas_audit.py on a 512x64 panel:

  mean ink coverage    42.7% -> 69.4%
  fully blank           5.9% -> 0%
  reads as empty        13.6% -> 0%
  worst blank stretch    4.8s -> 0s
  full rotation          414s -> 123s
  plugins per cycle         3 -> 6

Note the metric choice: a "fully blank" scan (>=95% black viewport) reported
only 0.4% and badly understated the problem, because two full-width segments
with mid-canvas content never fully blank the viewport — they hold it at ~28%.
window_coverage_stats grades every viewport position by how much ink it
carries, which is what tracks perceived dead time.

Known remaining: cycle transitions still freeze ~3.5s while the next cycle is
fetched. Fixing that needs background prefetch, which is deferred because the
fallback-capture path mutates the shared display_manager.image and racing it
against the render loop risks torn frames.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Drop unused Optional import from the vegas audit script

Flagged by Codacy (F401). Any, Dict and List are all still used.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Align Vegas API bounds with validate(), fix audit config plumbing

Both from review feedback on #423.

The web API's accepted ranges disagreed with VegasModeConfig.validate(),
which is what actually gates Vegas starting:

  scroll_speed      1-100  -> 1-200   (a slider value of 150 returned 400)
  separator_width   0-500  -> 0-128
  target_fps        1-200  -> 30-200
  buffer_ahead      1-20   -> 1-5

The three loose ones were the dangerous direction: the value saved with a
200, then VegasModeCoordinator.start() failed validation with only a log
line, so the ticker silently never ran. The UI already matched validate() in
all four cases, so the API was the odd one out.

test_vegas_api_bounds_match_validate parses the numeric_fields map out of
api_v3 and asserts every bound against validate(), plus that validate()
accepts both endpoints and rejects just outside them, so these cannot drift
apart again. That test immediately caught a missing upper bound on
min_plugin_width, now added — unbounded it would drop every segment and
leave a blank ticker.

Separately, vegas_audit.py constructed PluginAdapter without the config, so
it fell back to VegasModeConfig() defaults and would report trimming and
width-budget behaviour that differed from the user's config.json. It now
passes the loaded config exactly as the coordinator does. This is the same
class of drift the explicit lead_gap and grouping arguments already guard
against. Output is unchanged on a rig whose config matches the defaults.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Vegas mode: render plugins narrower, space rows by measured separation

Trimming reclaims blank margins but cannot compact a layout that genuinely
spans the display — a five-column forecast, a progress bar drawn at 100%
width, a stat block with the panel's whole width between its elements. Those
need the plugin to make different layout decisions, which means telling it the
screen is narrower while it renders.

DisplayManager.render_size() presents a smaller logical canvas for the
duration of a Vegas content fetch, reusing the same _LogicalMatrix
indirection double-sided mode already relies on so plugins see a consistent
size from every accessor. Plugins that size themselves from matrix.width need
no changes at all; one that wants to be explicit can read the new
BasePlugin.get_vegas_render_width().

Width is a percentage so a single setting travels across panel sizes:
vegas_scroll.render_width_pct globally, or vegas_width_pct in an individual
plugin's config. Measured on a 512x64 panel with real data:

  ledmatrix-weather   1536px -> 576px   (forecast becomes narrow cards)
  youtube-stats        353px -> 199px   (2% blank left, so genuinely compact)
  geochron             453px -> 153px   (ink density rises to 100%)
  ledmatrix-flights    950px -> 740px

The youtube-stats figure is the clearest evidence the layout itself changed
rather than being cropped: at full width the content had to be trimmed from
512px to 353px, whereas at 40% it arrives with almost no blank to reclaim.

Row spacing is now measured rather than added. A flat gap gets it wrong in
both directions at once — content drawn flush to its own edges ends up nearly
touching (reported for recent sports scores, which sat 8px apart), while
content already carrying wide margins gets pushed even further out.
separation_gap() measures the blank each pair already has and adds only the
shortfall, up to min_content_separation (default 24). intra_plugin_gap stays
as a floor applied regardless.

Two tests shipped in the previous commit encoded the old flat-gap arithmetic
and are updated to the measured semantics, including one renamed to reflect
that zero intra_plugin_gap alone no longer butts rows together.

Also fixes a real bug found while testing: the harness display manager had no
render_size(), and because the adapter catches broadly that surfaced as "no
content" rather than an error, silently dropping five plugins. Added the
context to VisualTestDisplayManager for parity, and _render_at() now degrades
to a no-op on any display manager lacking it, so a third-party or older
harness loses the narrowing rather than the content.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Vegas mode: end cycles before the wrap, keep the width budget honest

Three fixes, the first a regression from lead_in_width defaulting to 0.

get_visible_portion wraps: once scroll_position + display_width passes the end
of the strip it fills the right of the frame from the *head* of the same strip.
So the final display_width of travel showed the cycle's first plugin re-entering
on the right while its last plugin exited on the left, and the recompose that
followed replaced both at once. On a 512px panel at 50px/s that was 10.2s of
two plugins on screen at once, ending in a hard cut — reported as the ticker
"switching mid-scroll" from F1 to news.

That used to be invisible because the strip began with a full display_width of
blank, so the wrapped-in region was black. Removing that blank (it was 10s of
dead panel per cycle) exposed the wrap. Cycles now end one display width
earlier, before any wrapped content appears, clamped for strips no wider than
the display so they don't complete instantly and spin the recompose loop.

Verified on hardware: a 3936px strip now completes at 68.5s, exactly
(3936 - 512) / 50.

Second, auto_trim=False also skipped the width budget, which is an unrelated
concern — turning off margin cropping should not let one plugin hold the panel
for minutes. Seen in the field: the F1 scoreboard contributed 116 images and
14,848px untouched, giving a 33,821px cycle (11 minutes of content). The budget
now applies regardless of trimming; with it restored that cycle is 6,362px.

Third, the budget accounted for row gaps using the flat intra_plugin_gap while
the compositor had moved to measured separation, so it under-counted by up to
(min_content_separation - intra_plugin_gap) per row and a many-row plugin
overran its cap. Both now use the same separation_gap() rule, and a test
asserts the composed block fits the budget end to end rather than trusting the
two paths to agree.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Fix IndexError in find_blank_cut when the cut lands on the image edge

A cut position after the last column is legitimate — _crop_to_budget asks for
min(start + budget, img.width), which equals the width whenever the remaining
strip is shorter than the budget. find_blank_cut clamped target to width but
then walked leftwards starting at target itself, so ink[width] raised
IndexError.

Caught on hardware: it killed the ledmatrix-stocks fetch, and because
_fetch_plugin_content catches broadly that surfaced as the plugin silently
contributing nothing for the cycle.

Only reachable on the second or later pass of the rotating window over a single
oversized image, which is why the existing tests missed it — they all exercised
the first pass, where start is 0 and start + budget is comfortably inside the
image. Added TestRotationAcrossMultipleCycles, which walks the window round
several times and asserts content is never lost, plus direct coverage of
find_blank_cut at and beyond the image edge.

Both bounds now stop at width - 1 so neither direction can index past the end.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Only cut oversized segments at real gaps between items

The width-budget crop snapped to the nearest blank column, and in rendered text
the gap between two characters is a single column. So a cut routinely landed
inside a word: the cycle showed "Wednesda" and the orphaned "y" turned up as a
lone floating letter in the next cycle, positioned after whatever plugin
happened to precede it.

Measured on the clock-simple segment to confirm: its blank runs are
[1, 1, 1, 1, 1, 8, 8] — five single-column letter gaps, every one of which
find_blank_cut would happily have chosen.

Cuts now only land in a run of at least min_cut_gap blank columns (default 6),
which excludes letter spacing while still finding the gaps plugins put between
items (the stocks ticker uses 32px, baseball 48px). Where no boundary falls
inside the budget the cut waits for the next one and overruns, because
splitting an item is worse than a slightly long segment.

Continuous content is treated differently on purpose: an image with no internal
gaps is a map or a chart, where any column is as good as another, so it is still
cut to the budget exactly. The gap rule protects discrete items; letting a solid
image escape the cap in its name would be wrong.

blank_runs() is vectorised — 48ms for a 17,000px strip, against seconds for a
per-column Python loop.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Hold capture_mode for every plugin render, not just narrowed ones

The native content path only entered capture_mode when it was also narrowing
the canvas, so at full width — which is every plugin without a vegas_width_pct
override, i.e. most of them — a plugin calling update_display() while building
its Vegas content wrote straight to the hardware. That is a visible flash
mid-scroll, and it lines up with the flash reported at cycle transitions, when
several plugins are fetched back to back.

Suppression is now unconditional; the narrowing context stays separate because
it is already a no-op at full width.

Both contexts are reached through helpers that degrade to nullcontext when the
display manager lacks them. That matters more than it looks: the adapter's
handlers are deliberately broad, so an AttributeError from a missing context
does not surface as an error — it surfaces as the plugin contributing nothing.
Making the call unconditional without this turned 44 tests red for exactly that
reason, all of them reporting lost content rather than the real cause.

The test double now provides capture_mode and render_size too, so tests
exercise the real contexts instead of silently taking the degraded path.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Vegas mode: one continuous strip instead of swapping cycles

A cycle used to be a discrete strip that got replaced: motion stopped, every
pixel was substituted at once, and the next group started with the viewport
already full. That is the freeze, the flash and the jump.

The strip is now extended rather than replaced. ScrollHelper gains
append_content(), which adds items on the right without touching
scroll_position or total_distance_scrolled, so motion continues and the next
group simply arrives from the right. Because completion is measured against
total_scroll_width, extending also defers completion — there is no longer a
cycle boundary to see.

drop_scrolled_prefix() reclaims what has gone past, keeping the strip bounded
however long Vegas runs (observed 5,000-11,000px against an unbounded strip
otherwise). It shifts total_distance_scrolled and total_scroll_width together so
the completion arithmetic is unchanged, and refuses to run while the viewport is
wrapping: wrapping reads the head of the strip into the right of the frame, so
trimming the head there would visibly change the picture. A test caught that.

Groups are prepared off the render thread. The constraint is that the canvas and
the matrix proxy are process-wide mutable state, so narrowing or capturing
through them from another thread would corrupt the frame the render loop is
pushing. get_content() therefore takes offscreen_only: the background thread uses
only paths that avoid the canvas, and anything needing it is marked and picked up
on the render thread. That puts the expensive work (native renders of leaderboard
and baseball cards, seconds each) in the background and leaves the cheap work
(display capture, 40-600ms) in the foreground.

DisplayManager's capture flag is now thread-local. As a shared flag, a background
capture would have suppressed the render loop's own frame pushes for its
duration, freezing the panel precisely when the point was to avoid a freeze.

Canvas-bound plugins are drained one at a time rather than as a batch: six at
once held the render thread for 1.75s. Drains are also spaced by two seconds
while the lookahead is healthy, since taking them back to back turns one long
stall into a run of short ones. When the strip is genuinely running short the
throttle is ignored, because content matters more than smoothness there.

Measured on hardware: zero cycle-complete swaps, drains landing 2-4s apart,
lookahead holding at 1,200-3,500px, no errors.

Set continuous_scroll false to restore the swap behaviour; the old path is intact.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Pace the Vegas frame loop adaptively: 31.5 -> 78.7 fps

The loop slept a fixed frame_interval on top of however long the frame took, so
at a measured 31.6ms per frame a flat 8ms of that was pure idle — a quarter of
the budget spent not rendering. It now sleeps only the remainder of the budget.

Measured on hardware: 31.5 fps to 78.7 fps sustained, with CPU going *down* from
150% to 127%. Scroll speed is unchanged at 49.9px/s against a configured 50,
because motion is derived from elapsed time rather than frame count — this buys
smoothness, not speed.

Worth recording what the bottleneck was not: the per-frame render path measures
0.34ms in total (0.18ms for the numpy slice, 0.17ms for the dirty-tracking
digest), which is a theoretical 2900 fps. Optimising any of that would have been
wasted effort. The frame was idle, not busy.

Also nices the prefetch thread. Its work is PIL and numpy that releases the GIL,
so the scheduler can act on the priority, and without it the prefetch competes
for the same cores as the render loop.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Sub-pixel scrolling: motion at the frame rate, not the pixel rate

With integer positioning the number of distinct frames per second equals the
scroll speed in px/s, however fast the loop renders. Measured at 50px/s and
78.7fps, 36% of frames were byte-identical: the extra frames cost work and
bought no motion, and what was left was 50 discrete 1px steps a second.

Two things were wrong with the pre-existing sub-pixel support. get_visible_portion
never consulted sub_pixel_scrolling — it always took the integer path, so the flag
and _get_visible_portion_subpixel were dead code. And that implementation needed
scipy.ndimage.shift, which is not installed on the target devices (HAS_SCIPY is
False there), so it would not have interpolated even if reached. Verified both:
positions 1000.0 and 1000.5 produced identical frames either way.

Blending is now wired up and implemented with numpy. Two details make it
affordable: slice cached_array directly instead of building two PIL images only
to convert them straight back (the naive version measured 15x the integer path),
and use fixed-point uint16 multiply-add rather than float32, which suits the Pi's
cores and gives finer weighting than the panel can resolve. Result 0.939ms
against 0.237ms — 0.70ms added per frame, a 1065fps ceiling.

Measured on hardware: 81.2 fps with blending on, against 78.7 with it off, so no
cost within noise — and every frame is now a distinct position rather than one in
three being a repeat.

The trade is a slight horizontal softening of text, since each frame blends two
positions. Set smooth_scroll false for maximum crispness.

Also benchmarked and cleared as non-issues: extending the strip costs 9.4ms on an
11,000px strip and trimming 2.5ms, both under one frame at this rate.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Add overflow handling: keep ordered content whole instead of rotating a window

The width budget split any oversized plugin by advancing a window each cycle.
That is right for interchangeable items — news headlines, odds, stock prices —
but wrong for ordered content: a league table showed ranks 1-6, then resumed at
7 two rotations later, which reads as out of order and out of context. Nobody
needs rank 23 in a ticker; they need the top of the table, every time.

overflow_mode chooses between them:

  rotate   — advance a window each cycle so everything is seen eventually
             (unchanged default)
  truncate — always show the start and drop the rest, keeping ordered content
             coherent. Records no window state, so every pass starts at the top.

Per-plugin vegas_overflow overrides the global setting, since one install has
both kinds of plugin. Also adds per-plugin vegas_max_width_screens, so content
that must stay whole can be given more room — or uncapped with 0 — without
lifting the cap on every ticker.

Applied on the test rig: f1-scoreboard and ledmatrix-leaderboard set to
truncate, and baseball given 4.5 screens because it was showing 8 of 9 games
when the whole slate needed only a little more room. Verified: F1 now reports
"the first 10 of 116 ... the rest are not shown", baseball has dropped out of
the budget log entirely, and stocks, odds-ticker and stock-news still rotate.

Also corrects the crop log, which claimed "window advances next cycle"
unconditionally and so misreported truncated crops. A test now pins the
behaviour behind the message: truncate must leave no offset recorded.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Stop Vegas mode showing last night's games as if they were live

A game that was live in the evening was still being drawn as live the next
morning. Two faults combined to freeze plugin visuals indefinitely.

PR #291 added a call to plugin_adapter.invalidate_plugin_scroll_cache() so
a plugin's own cached scroll image would be rebuilt from fresh data. That
method was never implemented. hot_swap_content() wraps the call in a broad
except, so every hot swap has raised AttributeError and been swallowed
silently ever since — which is why the visuals it was meant to keep fresh
never were.

Continuous scrolling then removed the only path that reached it at all:
should_recompose() and hot_swap_content() are called from the
non-continuous branch of run_frame(), and continuous_scroll defaults to
True. So on a default install the pending-update flags were set by the
update tick, never consumed, and grew without bound.

Together these froze content completely, because refetching is not enough
on its own: the sports plugins' get_vegas_content() regenerates only "if
the cache is empty", so take_next_group() kept receiving the same picture
however often it asked.

Fixed by:

- Implementing invalidate_plugin_scroll_cache(). It covers both layouts —
  a helper directly on the plugin (stocks, news, odds-ticker) and one
  owned by a scroll-display manager (the sports scoreboards, which is the
  shape that produced this bug) — and clears cached_image and
  cached_array together, since the array is the image's numpy mirror.

- Adding StreamManager.invalidate_pending_updates() and calling it from
  the continuous branch. It only drops the caches; the plugin recomposes
  when it next comes round in the rotation. process_updates() is wrong
  here: it refetches synchronously and merges into the active buffer that
  continuous mode bypasses, and hot_swap_content() rebuilds and
  repositions the whole strip, which is the freeze-and-jump this mode
  exists to avoid.

Tests assert the fix rather than the implementation: 14 of the 17 new
tests fail without it. Includes the wiring itself, since the regression
was a call that was simply absent, and a check that the scroll position is
untouched so this cannot regress into the swap's visible jump.

All Vegas suites pass (355 tests). test_display_controller_vegas_tick.py
still cannot be collected off-device for want of rgbmatrix, identically
with and without this change.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

* Fix two CodeRabbit-flagged test assertions in vegas density tests

test_prepared_group_is_used_without_refetching had a tautological final
assertion; now checks stream.calls directly. test_no_partial_letter_at_either_edge
required both crop edges to be blank, but the left edge here is always the
crop's start position with no lead-in gap in word_strip, so it legitimately
carries ink — only the right edge is an actual cut and needs the check.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KEZK1P1Q1fu5pcuVrkrCFZ

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-07-31 09:40:38 -04:00
ChuckandClaude 7a9d01342a Fix inconsistent Vegas scroll transition gaps caused by plugin-baked padding (#384)
* Strip plugin-baked scroll padding when capturing content for Vegas mode

Plugins that build their own ticker image via ScrollHelper.create_scrolling_image()
(or that manually pad both ends for a clean standalone loop) carry a solid-black
margin up to display_width wide on one or both edges. Vegas mode already adds its
own configurable gap around every item, so leaving that margin in place stacked an
extra, uncontrolled blank stretch on top of separator_width for whichever plugin
took the ScrollHelper-capture path — producing inconsistent transition gaps between
modules compared to plugins that provide content natively via get_vegas_content().

_get_scroll_helper_content() now detects and crops any such margin before handing
the image to the Vegas render pipeline, so every plugin's gap is governed solely by
vegas_scroll.separator_width regardless of which capture path produced its content.

* Address CodeRabbit nitpick: warn on double-edge padding crop, add unit tests

Logging a double-edge match at warning level (vs. info for a single edge)
makes it easy to spot an unexpected crop in the field, since two edges
matching at once is a much stronger signal of genuine baked-in padding than
one edge coinciding with real all-black content.

Also adds test/test_vegas_plugin_adapter.py covering _strip_scroll_padding's
branch logic: leading-only, trailing-only, both-edges, no-match, degenerate
all-black, missing/undersized display_width, and the info-vs-warning log level.

* Add type hints and docstring to test _solid helper (CodeRabbit nitpick)

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-07-08 09:43:13 -04:00
sarjentandClaude Sonnet 4.6 dbb53da31d fix(vegas): eliminate plugin re-appearance at scroll cycle boundaries (#327)
* fix(vegas): eliminate plugin re-appearance at scroll cycle boundaries

The Vegas scroll image is wider than the display. scroll_helper marks a
cycle complete only after total_distance_scrolled >= total_scroll_width +
display_width, meaning it keeps scrolling for an extra display_width of
pixels after all content has exited left. During that extra travel the
scroll_position wraps back to ~0 and the first plugin re-enters from the
right - visible for ~2-3 seconds as a plugin partially displaying before
the next one starts.

render_pipeline.render_frame(): end the cycle the moment
total_distance_scrolled >= total_scroll_width (the natural wrap point),
before any second-pass content becomes visible. Push a blank frame
immediately on detection so hardware never shows a frozen content
snapshot while start_new_cycle() recomposes (~100 ms).

display_manager.py: add capture_mode() context manager. When active,
update_display() and the canvas clear in clear() skip the hardware
write, preventing plugins that call update_display() internally from
flashing on the matrix during off-screen content capture inside
start_new_cycle().

plugin_adapter.py: wrap all plugin.display() calls in
_capture_display_content() and _trigger_scroll_content_generation()
with capture_mode() so the fallback capture path never produces
hardware output.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(vegas): tighten exception handling in clear() and blank-frame push

display_manager.clear(): replace bare except/pass on the three hardware
Clear() calls with (RuntimeError, OSError) and a logger.error() so
failures are visible in logs rather than silently swallowed.  Still
non-fatal — the PIL image buffer is already black before these calls,
so the next update_display() will push clean content regardless.

render_pipeline.render_frame(): replace broad except/pass in the
blank-frame push with (ImportError, ValueError, TypeError, MemoryError)
and a logger.error() that includes display dimensions for context.
update_display() already handles its own hardware errors internally.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(vegas): catch OSError and RuntimeError in blank-frame push

Image.new() can raise OSError in some PIL environments and hardware
libraries may surface RuntimeError on I/O failures.  Add both to the
exception tuple alongside the existing ImportError/ValueError/TypeError/
MemoryError so no boundary failure escapes the local handler.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-13 15:51:38 -04:00
8391832c90 fix(vegas): keep plugin data and visuals fresh during Vegas scroll mode (#291)
* fix(vegas): keep plugin data and visuals fresh during Vegas scroll mode

Plugins using ESPN APIs and other data sources were not updating during
Vegas mode because the render loop blocked for 60-600s per iteration,
starving the scheduled update tick. This adds a non-blocking background
thread that runs plugin updates every ~1s during Vegas mode, bridges
update notifications to the stream manager, and clears stale scroll
caches so all three content paths (native, scroll_helper, fallback)
reflect fresh data.

- Add background update tick thread in Vegas coordinator (non-blocking)
- Add _tick_plugin_updates_for_vegas() bridge in display controller
- Fix fallback capture to call update() instead of only update_data()
- Clear scroll_helper.cached_image on update for scroll-based plugins
- Drain background thread on Vegas stop/exit to prevent races

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix(vegas): address review findings in update pipeline

- Extract _drive_background_updates() helper and call it from both the
  render loop and the static-pause wait loop so plugin data stays fresh
  during static pauses (was skipped by the early `continue`)
- Remove synchronous plugin.update() from the fallback capture path;
  the background update tick already handles API refreshes so the
  content-fetch thread should only call lightweight update_data()
- Use scroll_helper.clear_cache() instead of just clearing cached_image
  so cached_array, total_scroll_width and scroll_position are also reset

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Chuck <chuck@example.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-21 13:42:27 -04:00
7524747e44 Feature/vegas scroll mode (#215)
* feat(display): add Vegas-style continuous scroll mode

Implement an opt-in Vegas ticker mode that composes all enabled plugin
content into a single continuous horizontal scroll. Includes a modular
package (src/vegas_mode/) with double-buffered streaming, 125 FPS
render pipeline using the existing ScrollHelper, live priority
interruption support, and a web UI for configuration with drag-drop
plugin ordering.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* feat(vegas): add three-mode display system (SCROLL, FIXED_SEGMENT, STATIC)

Adds a flexible display mode system for Vegas scroll mode that allows
plugins to control how their content appears in the continuous scroll:

- SCROLL: Content scrolls continuously (multi-item plugins like sports)
- FIXED_SEGMENT: Fixed block that scrolls by (clock, weather)
- STATIC: Scroll pauses, plugin displays, then resumes (alerts)

Changes:
- Add VegasDisplayMode enum to base_plugin.py with backward-compatible
  mapping from legacy get_vegas_content_type()
- Add static pause handling to coordinator with scroll position save/restore
- Add mode-aware content composition to stream_manager
- Add vegas_mode info to /api/v3/plugins/installed endpoint
- Add mode indicators to Vegas settings UI
- Add comprehensive plugin developer documentation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas,widgets): address validation, thread safety, and XSS issues

Vegas mode fixes:
- config.py: align validation limits with UI (scroll_speed max 200, separator_width max 128)
- coordinator.py: fix race condition by properly initializing _pending_config
- plugin_adapter.py: remove unused import
- render_pipeline.py: preserve deque type in reset() method
- stream_manager.py: fix lock handling and swap_buffers to truly swap

API fixes:
- api_v3.py: normalize boolean checkbox values, validate numeric fields, ensure JSON arrays

Widget fixes:
- day-selector.js: remove escapeHtml from JSON.stringify to prevent corruption
- password-input.js: use deterministic color class mapping for Tailwind JIT
- radio-group.js: replace inline onchange with addEventListener to prevent XSS
- select-dropdown.js: guard global registry access
- slider.js: add escapeAttr for attributes, fix null dereference in setValue

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): improve exception handling and static pause state management

coordinator.py:
- _check_live_priority: use logger.exception for full traceback
- _end_static_pause: guard scroll resume on interruption (stop/live priority)
- _update_static_mode_plugins: log errors instead of silently swallowing

render_pipeline.py:
- compose_scroll_content: use specific exceptions and logger.exception
- render_frame: use specific exceptions and logger.exception
- hot_swap_content: use specific exceptions and logger.exception

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): add interrupt mechanism and improve config/exception handling

- Add interrupt checker callback to Vegas coordinator for responsive
  handling of on-demand requests and wifi status during Vegas mode
- Fix config.py update() to include dynamic duration fields
- Fix is_plugin_included() consistency with get_ordered_plugins()
- Update _apply_pending_config to propagate config to StreamManager
- Change _fetch_plugin_content to use logger.exception for traceback
- Replace bare except in _refresh_plugin_list with specific exceptions
- Add aria-label accessibility to Vegas toggle checkbox
- Fix XSS vulnerability in plugin metadata rendering with escapeHtml

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): improve logging, validation, lock handling, and config updates

- display_controller.py: use logger.exception for Vegas errors with traceback
- base_plugin.py: validate vegas_panel_count as positive integer with warning
- coordinator.py: fix _apply_pending_config to avoid losing concurrent updates
  by clearing _pending_config while holding lock
- plugin_adapter.py: remove broad catch-all, use narrower exception types
  (AttributeError, TypeError, ValueError, OSError, RuntimeError) and
  logger.exception for traceback preservation
- api_v3.py: only update vegas_config['enabled'] when key is present in data
  to prevent incorrect disabling when checkbox is omitted

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): improve cycle advancement, logging, and accessibility

- Add advance_cycle() method to StreamManager for clearing buffer between cycles
- Call advance_cycle() in RenderPipeline.start_new_cycle() for fresh content
- Use logger.exception() for interrupt check and static pause errors (full tracebacks)
- Add id="vegas_scroll_label" to h3 for aria-labelledby reference
- Call updatePluginConfig() after rendering plugin list for proper initialization

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): add thread-safety, preserve updates, and improve logging

- display_controller.py: Use logger.exception() for Vegas import errors
- plugin_adapter.py: Add thread-safe cache lock, remove unused exception binding
- stream_manager.py: In-place merge in process_updates() preserves non-updated plugins
- api_v3.py: Change vegas_scroll_enabled default from False to True

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): add debug logging and narrow exception types

- stream_manager.py: Log when get_vegas_display_mode() is unavailable
- stream_manager.py: Narrow exception type from Exception to (AttributeError, TypeError)
- api_v3.py: Log exceptions when reading Vegas display metadata with plugin context

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): fix method call and improve exception logging

- Fix _check_vegas_interrupt() calling nonexistent _check_wifi_status(),
  now correctly calls _check_wifi_status_message()
- Update _refresh_plugin_list() exception handler to use logger.exception()
  with plugin_id and class name for remote debugging

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(web): replace complex toggle with standard checkbox for Vegas mode

The Tailwind pseudo-element toggle (after:content-[''], etc.) wasn't
rendering because these classes weren't in the CSS bundle. Replaced
with a simple checkbox that matches other form controls in the template.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* debug(vegas): add detailed logging to _refresh_plugin_list

Track why plugins aren't being found for Vegas scroll:
- Log count of loaded plugins
- Log enabled status for each plugin
- Log content_type and display_mode checks
- Log when plugin_manager lacks loaded_plugins

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): use correct attribute name for plugin manager

StreamManager and VegasModeCoordinator were checking for
plugin_manager.loaded_plugins but PluginManager stores active
plugins in plugin_manager.plugins. This caused Vegas scroll
to find zero plugins despite plugins being available.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): convert scroll_speed from px/sec to px/frame correctly

The config scroll_speed is in pixels per second, but ScrollHelper
in frame_based_scrolling mode interprets it as pixels per frame.
Previously this caused the speed to be clamped to max 5.0 regardless
of the configured value.

Now properly converts: pixels_per_frame = scroll_speed * scroll_delay

With defaults (50 px/s, 0.02s delay), this gives 1 px/frame = 50 px/s.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* feat(vegas): add FPS logging every 5 seconds

Logs actual FPS vs target FPS to help diagnose performance issues.
Shows frame count in each 5-second interval.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): improve plugin content capture reliability

- Call update_data() before capture to ensure fresh plugin data
- Try display() without force_clear first, fallback if TypeError
- Retry capture with force_clear=True if first attempt is blank
- Use histogram-based blank detection instead of point sampling
  (more reliable for content positioned anywhere in frame)

This should help capture content from plugins that don't implement
get_vegas_content() natively.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): handle callable width/height on display_manager

DisplayManager.width and .height may be methods or properties depending
on the implementation. Use callable() check to call them if needed,
ensuring display_width and display_height are always integers.

Fixes potential TypeError when width/height are methods.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): use logger.exception for display mode errors

Replace logger.error with logger.exception to capture full stack trace
when get_vegas_display_mode() fails on a plugin.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): protect plugin list updates with buffer lock

Move assignment of _ordered_plugins and index resets under _buffer_lock
to prevent race conditions with _prefetch_content() which reads these
variables under the same lock.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): catch all exceptions in get_vegas_display_mode

Broaden exception handling from AttributeError/TypeError to Exception
so any plugin error in get_vegas_display_mode() doesn't abort the
entire plugin list refresh. The loop continues with the default
FIXED_SEGMENT mode.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(vegas): refresh stream manager when config updates

After updating stream_manager.config, force a refresh to pick up changes
to plugin_order, excluded_plugins, and buffer_ahead settings. Also use
logger.exception to capture full stack traces on config update errors.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* debug(vegas): add detailed logging for blank image detection

* feat(vegas): extract full scroll content from plugins using ScrollHelper

Plugins like ledmatrix-stocks and odds-ticker use ScrollHelper with a
cached_image that contains their full scrolling content. Instead of
falling back to single-frame capture, now check for scroll_helper.cached_image
first to get the complete scrolling content for Vegas mode.

* debug(vegas): add comprehensive INFO-level logging for plugin content flow

- Log each plugin being processed with class name
- Log which content methods are tried (native, scroll_helper, fallback)
- Log success/failure of each method with image dimensions
- Log brightness check results for blank image detection
- Add visual separators in logs for easier debugging
- Log plugin list refresh with enabled/excluded status

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* feat(vegas): trigger scroll content generation when cache is empty

When a plugin has a scroll_helper but its cached_image is not yet
populated, try to trigger content generation by:
1. Calling _create_scrolling_display() if available (stocks pattern)
2. Calling display(force_clear=True) as a fallback

This allows plugins like stocks to provide their full scroll content
even when Vegas mode starts before the plugin has run its normal
display cycle.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix: improve exception handling in plugin_adapter scroll content retrieval

Replace broad except Exception handlers with narrow exception types
(AttributeError, TypeError, ValueError, OSError) and use logger.exception
instead of logger.warning/info to capture full stack traces for better
diagnosability.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix: narrow exception handling in coordinator and plugin_adapter

- coordinator.py: Replace broad Exception catch around get_vegas_display_mode()
  with (AttributeError, TypeError) and use logger.exception for stack traces
- plugin_adapter.py: Narrow update_data() exception handler to
  (AttributeError, RuntimeError, OSError) and use logger.exception

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix: improve Vegas mode robustness and API validation

- display_controller: Guard against None plugin_manager in Vegas init
- coordinator: Restore scrolling state in resume() to match pause()
- api_v3: Validate Vegas numeric fields with range checks and 400 errors

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Chuck <chuck@example.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-29 10:23:56 -05:00