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Author SHA1 Message Date
ChuckBuildsandClaude Opus 5 0a7d14d75e fix(plugins): say when discovery skips a directory
A plugin can be enabled in config, enabled in plugin state, present on disk
with a valid manifest and an importable entry point -- and simply absent from
the running process, with nothing anywhere to say why.

That is not hypothetical. hockey-scoreboard on a live rig is enabled in both
places, imports cleanly when loaded by hand, and is listed in the Vegas plugin
order, but is not among the 22 plugins the process actually holds. Establishing
even that much meant comparing cache-file mtimes to find it had last run three
days earlier. The journal had nothing, because discovery does not report what
it declines to load.

Two paths were silent. A directory with no manifest.json was skipped without
comment, which is defensible until it is the thing you are trying to explain.
Quieter still, a manifest that parsed but carried no "id" was read
successfully and then dropped on the floor -- no warning, no trace, and the
plugin simply does not exist as far as the rest of the system is concerned.

Both now log a warning naming the directory and the reason.

This does not explain the rig above; its manifest has an id. It makes the next
occurrence diagnosable from the journal instead of from file timestamps.

Reverting the change fails both tests. 65 plugin-system tests pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01STMbQE4YctTacQXfbYqKuW
2026-08-20 23:47:40 -04:00
5 changed files with 149 additions and 130 deletions
+1 -1
View File
@@ -328,7 +328,7 @@ class ScrollHelper:
elapsed_time = current_time - (self.scroll_start_time or current_time)
# The image already includes display_width padding, so we only need total_scroll_width
required_total_distance = self.total_scroll_width
self.logger.debug(
self.logger.info(
"Scroll progress: elapsed=%.2fs, target=%.2fs, total_scrolled=%.0f/%d px (%.1f%%)",
elapsed_time,
self.calculated_duration,
+30 -12
View File
@@ -195,18 +195,36 @@ class PluginManager:
continue
manifest_path = item / "manifest.json"
if manifest_path.exists():
try:
with open(manifest_path, 'r', encoding='utf-8') as f:
manifest = json.load(f)
plugin_id = manifest.get('id')
if plugin_id:
plugin_ids.append(plugin_id)
new_manifests[plugin_id] = manifest
new_directories[plugin_id] = item
except (json.JSONDecodeError, PermissionError, OSError) as e:
self.logger.warning("Error reading manifest from %s: %s", manifest_path, e, exc_info=True)
continue
if not manifest_path.exists():
# A directory here that carries no manifest is not a
# plugin. Said once, because the alternative is a plugin
# that is enabled in config, enabled in plugin state,
# present on disk, and simply absent from the running
# process with nothing anywhere to say why. Working that
# out afterwards means reading cache-file mtimes.
self.logger.warning(
"Skipping %s: no manifest.json, so it cannot be loaded "
"as a plugin", item.name)
continue
try:
with open(manifest_path, 'r', encoding='utf-8') as f:
manifest = json.load(f)
except (json.JSONDecodeError, PermissionError, OSError) as e:
self.logger.warning("Error reading manifest from %s: %s", manifest_path, e, exc_info=True)
continue
plugin_id = manifest.get('id')
if not plugin_id:
# Parsed but unusable. This was the quietest path of all:
# the manifest is read successfully and then dropped.
self.logger.warning(
"Skipping %s: its manifest.json has no \"id\", so there "
"is nothing to register it under", item.name)
continue
plugin_ids.append(plugin_id)
new_manifests[plugin_id] = manifest
new_directories[plugin_id] = item
except (OSError, PermissionError) as e:
self.logger.error("Error scanning directory %s: %s", directory, e, exc_info=True)
+54 -54
View File
@@ -83,7 +83,7 @@ class PluginAdapter:
# into unrelated headlines once the strip refreshed to 9,505px.
self._offset_shapes: dict = {}
logger.debug(
logger.info(
"PluginAdapter initialized: display=%dx%d",
self.display_width, self.display_height
)
@@ -109,7 +109,7 @@ class PluginAdapter:
Returns:
List of PIL Images representing plugin content, or None if no content
"""
logger.debug(
logger.info(
"[%s] Getting content (class=%s)",
plugin_id, plugin.__class__.__name__
)
@@ -118,7 +118,7 @@ class PluginAdapter:
cached = self._get_cached(plugin_id)
if cached is not None:
total_width = sum(img.width for img in cached)
logger.debug(
logger.info(
"[%s] Using cached content: %d images, %dpx total",
plugin_id, len(cached), total_width
)
@@ -126,46 +126,46 @@ class PluginAdapter:
# Try native Vegas content method first
has_native = hasattr(plugin, 'get_vegas_content')
logger.debug("[%s] Has get_vegas_content: %s", plugin_id, has_native)
logger.info("[%s] Has get_vegas_content: %s", plugin_id, has_native)
if has_native:
content = self._get_native_content(plugin, plugin_id, offscreen_only)
if content:
total_width = sum(img.width for img in content)
logger.debug(
logger.info(
"[%s] Native content SUCCESS: %d images, %dpx total",
plugin_id, len(content), total_width
)
return self._finalize(content, plugin_id, 'native', plugin)
logger.debug("[%s] Native content returned None", plugin_id)
logger.info("[%s] Native content returned None", plugin_id)
# Try to get scroll_helper's cached image (for scrolling plugins like stocks/odds)
has_scroll_helper = hasattr(plugin, 'scroll_helper')
logger.debug("[%s] Has scroll_helper: %s", plugin_id, has_scroll_helper)
logger.info("[%s] Has scroll_helper: %s", plugin_id, has_scroll_helper)
content = self._get_scroll_helper_content(plugin, plugin_id, offscreen_only)
if content:
total_width = sum(img.width for img in content)
logger.debug(
logger.info(
"[%s] ScrollHelper content SUCCESS: %d images, %dpx total",
plugin_id, len(content), total_width
)
return self._finalize(content, plugin_id, 'scroll_helper', plugin)
if has_scroll_helper:
logger.debug("[%s] ScrollHelper content returned None", plugin_id)
logger.info("[%s] ScrollHelper content returned None", plugin_id)
if offscreen_only:
# Display capture needs the shared canvas; leave it to the caller.
logger.debug(
logger.info(
"[%s] Needs display capture, deferring to the render thread",
plugin_id
)
return None
# Fall back to display capture
logger.debug("[%s] Trying fallback display capture...", plugin_id)
logger.info("[%s] Trying fallback display capture...", plugin_id)
content = self._capture_display_content(plugin, plugin_id)
if content:
total_width = sum(img.width for img in content)
logger.debug(
logger.info(
"[%s] Fallback capture SUCCESS: %d images, %dpx total",
plugin_id, len(content), total_width
)
@@ -226,7 +226,7 @@ class PluginAdapter:
kept.append(result.image)
if not kept:
logger.debug(
logger.info(
"[%s] All %d image(s) from %s were blank — contributing nothing",
plugin_id, len(images), source
)
@@ -235,14 +235,14 @@ class PluginAdapter:
trimmed_width = sum(img.width for img in kept)
if trimmed_width < self.config.min_plugin_width:
logger.debug(
logger.info(
"[%s] Trimmed content %dpx is below min_plugin_width %dpx — skipping",
plugin_id, trimmed_width, self.config.min_plugin_width
)
return None
if trimmed_width != original_width or dropped_blank:
logger.debug(
logger.info(
"[%s] Trimmed %s content: %dpx -> %dpx (%.0f%% reclaimed), "
"%d image(s) kept, %d blank dropped",
plugin_id, source, original_width, trimmed_width,
@@ -431,7 +431,7 @@ class PluginAdapter:
"""
if self._offset_shapes.get(plugin_id) != shape:
if plugin_id in self._item_offsets:
logger.debug(
logger.info(
"[%s] Content is %s now, was %s — restarting the rotation "
"rather than resuming at a position that no longer means "
"anything", plugin_id, shape,
@@ -579,7 +579,7 @@ class PluginAdapter:
consumed += 1
if mode == 'truncate':
logger.debug(
logger.info(
"[%s] Width budget %dpx: showing the first %d of %d row(s) "
"(%dpx incl. gaps); the rest are not shown (overflow=truncate)",
plugin_id, budget, len(selected), len(images), used
@@ -587,7 +587,7 @@ class PluginAdapter:
else:
self._record_offset(
plugin_id, (start + consumed) % len(images), shape)
logger.debug(
logger.info(
"[%s] Width budget %dpx: showing %d of %d row(s) (%dpx incl. gaps) "
"from offset %d; remainder deferred to a later cycle",
plugin_id, budget, len(selected), len(images), used, start
@@ -636,7 +636,7 @@ class PluginAdapter:
if mode != 'truncate':
self._record_offset(
plugin_id, 0 if end >= img.width else end, shape)
logger.debug(
logger.info(
"[%s] Width budget %dpx: cropped continuous %dpx image to "
"[%d:%d] (no item gaps of %dpx+ to align to)%s",
plugin_id, budget, img.width, offset, end, min_run,
@@ -674,7 +674,7 @@ class PluginAdapter:
self._record_offset(
plugin_id, 0 if end >= img.width else end_index, shape)
logger.debug(
logger.info(
"[%s] Width budget %dpx: cropped single %dpx image to [%d:%d] "
"(%dpx) at item boundaries %d-%d of %d, %s",
plugin_id, budget, img.width, start, end, end - start,
@@ -698,7 +698,7 @@ class PluginAdapter:
List of images or None
"""
try:
logger.debug("[%s] Native: calling get_vegas_content()", plugin_id)
logger.info("[%s] Native: calling get_vegas_content()", plugin_id)
# Tell the plugin how much width the ticker wants it to use, and
# narrow the canvas for the duration of the call. A plugin that
@@ -707,7 +707,7 @@ class PluginAdapter:
# be explicit can read get_vegas_render_width().
render_width = self.resolve_render_width(plugin, plugin_id)
if render_width != self.display_width:
logger.debug(
logger.info(
"[%s] Native: requesting %dpx instead of %dpx",
plugin_id, render_width, self.display_width
)
@@ -735,19 +735,19 @@ class PluginAdapter:
plugin._vegas_render_width = None
if result is None:
logger.debug("[%s] Native: get_vegas_content() returned None", plugin_id)
logger.info("[%s] Native: get_vegas_content() returned None", plugin_id)
return None
# Normalize to list
if isinstance(result, Image.Image):
images = [result]
logger.debug(
logger.info(
"[%s] Native: got single Image %dx%d",
plugin_id, result.width, result.height
)
elif isinstance(result, (list, tuple)):
images = list(result)
logger.debug(
logger.info(
"[%s] Native: got %d items in list/tuple",
plugin_id, len(images)
)
@@ -768,14 +768,14 @@ class PluginAdapter:
)
continue
logger.debug(
logger.info(
"[%s] Native: item[%d] is %dx%d, mode=%s",
plugin_id, i, img.width, img.height, img.mode
)
# Ensure correct height
if img.height != self.display_height:
logger.debug(
logger.info(
"[%s] Native: resizing item[%d]: %dx%d -> %dx%d",
plugin_id, i, img.width, img.height,
img.width, self.display_height
@@ -793,13 +793,13 @@ class PluginAdapter:
if valid_images:
total_width = sum(img.width for img in valid_images)
logger.debug(
logger.info(
"[%s] Native: SUCCESS - %d images, %dpx total width",
plugin_id, len(valid_images), total_width
)
return valid_images
logger.debug("[%s] Native: no valid images after validation", plugin_id)
logger.info("[%s] Native: no valid images after validation", plugin_id)
return None
except (AttributeError, TypeError, ValueError, OSError) as e:
@@ -833,20 +833,20 @@ class PluginAdapter:
logger.debug("[%s] No scroll_helper attribute", plugin_id)
return None
logger.debug(
logger.info(
"[%s] Found scroll_helper: %s",
plugin_id, type(scroll_helper).__name__
)
cached_image = getattr(scroll_helper, 'cached_image', None)
if cached_image is None:
logger.debug(
logger.info(
"[%s] scroll_helper.cached_image is None, triggering content generation",
plugin_id
)
if offscreen_only:
# Generating it calls display(), which needs the canvas.
logger.debug(
logger.info(
"[%s] scroll_helper cache empty; deferring generation "
"to the render thread", plugin_id
)
@@ -859,13 +859,13 @@ class PluginAdapter:
return None
if not isinstance(cached_image, Image.Image):
logger.debug(
logger.info(
"[%s] scroll_helper.cached_image is not an Image: %s",
plugin_id, type(cached_image).__name__
)
return None
logger.debug(
logger.info(
"[%s] scroll_helper.cached_image found: %dx%d, mode=%s",
plugin_id, cached_image.width, cached_image.height, cached_image.mode
)
@@ -888,7 +888,7 @@ class PluginAdapter:
# Ensure correct height
if img.height != self.display_height:
logger.debug(
logger.info(
"[%s] Resizing scroll_helper content: %dx%d -> %dx%d",
plugin_id, img.width, img.height,
img.width, self.display_height
@@ -902,7 +902,7 @@ class PluginAdapter:
if img.mode != 'RGB':
img = img.convert('RGB')
logger.debug(
logger.info(
"[%s] ScrollHelper content ready: %dx%d",
plugin_id, img.width, img.height
)
@@ -1002,7 +1002,7 @@ class PluginAdapter:
with self._capture():
# Method 1: Try _create_scrolling_display (stocks pattern)
if hasattr(plugin, '_create_scrolling_display'):
logger.debug(
logger.info(
"[%s] Triggering via _create_scrolling_display()",
plugin_id
)
@@ -1010,7 +1010,7 @@ class PluginAdapter:
plugin._create_scrolling_display()
cached_image = getattr(scroll_helper, 'cached_image', None)
if cached_image is not None and isinstance(cached_image, Image.Image):
logger.debug(
logger.info(
"[%s] _create_scrolling_display() SUCCESS: %dx%d",
plugin_id, cached_image.width, cached_image.height
)
@@ -1022,7 +1022,7 @@ class PluginAdapter:
# Method 2: Try display(force_clear=True) which typically builds scroll content
if hasattr(plugin, 'display'):
logger.debug(
logger.info(
"[%s] Triggering via display(force_clear=True)",
plugin_id
)
@@ -1031,12 +1031,12 @@ class PluginAdapter:
plugin.display(force_clear=True)
cached_image = getattr(scroll_helper, 'cached_image', None)
if cached_image is not None and isinstance(cached_image, Image.Image):
logger.debug(
logger.info(
"[%s] display(force_clear=True) SUCCESS: %dx%d",
plugin_id, cached_image.width, cached_image.height
)
return cached_image
logger.debug(
logger.info(
"[%s] display(force_clear=True) did not populate cached_image",
plugin_id
)
@@ -1045,7 +1045,7 @@ class PluginAdapter:
"[%s] display(force_clear=True) failed", plugin_id
)
logger.debug(
logger.info(
"[%s] Could not trigger scroll content generation",
plugin_id
)
@@ -1077,15 +1077,15 @@ class PluginAdapter:
try:
# Save current display state
original_image = self.display_manager.image.copy()
logger.debug("[%s] Fallback: saved original display state", plugin_id)
logger.info("[%s] Fallback: saved original display state", plugin_id)
# Ensure plugin has fresh data before capturing
has_update_data = hasattr(plugin, 'update_data')
logger.debug("[%s] Fallback: has update_data=%s", plugin_id, has_update_data)
logger.info("[%s] Fallback: has update_data=%s", plugin_id, has_update_data)
if has_update_data:
try:
plugin.update_data()
logger.debug("[%s] Fallback: update_data() called", plugin_id)
logger.info("[%s] Fallback: update_data() called", plugin_id)
except (AttributeError, RuntimeError, OSError):
logger.exception("[%s] Fallback: update_data() failed", plugin_id)
@@ -1097,41 +1097,41 @@ class PluginAdapter:
# arrangement rather than one that has to be cropped afterwards.
render_width = self.resolve_render_width(plugin, plugin_id)
if render_width != self.display_width:
logger.debug(
logger.info(
"[%s] Fallback: rendering at %dpx instead of %dpx",
plugin_id, render_width, self.display_width
)
with self._capture(), self._render_at(render_width):
self.display_manager.clear()
logger.debug("[%s] Fallback: display cleared, calling display()", plugin_id)
logger.info("[%s] Fallback: display cleared, calling display()", plugin_id)
# First try without force_clear (some plugins behave better this way)
try:
plugin.display()
logger.debug("[%s] Fallback: display() called successfully", plugin_id)
logger.info("[%s] Fallback: display() called successfully", plugin_id)
except TypeError:
# Plugin may require force_clear argument
logger.debug("[%s] Fallback: display() failed, trying with force_clear=True", plugin_id)
logger.info("[%s] Fallback: display() failed, trying with force_clear=True", plugin_id)
plugin.display(force_clear=True)
# Capture the result
captured = self.display_manager.image.copy()
logger.debug(
logger.info(
"[%s] Fallback: captured frame %dx%d, mode=%s",
plugin_id, captured.width, captured.height, captured.mode
)
# Check if captured image has content (not all black)
is_blank, bright_ratio = self._is_blank_image(captured, return_ratio=True)
logger.debug(
logger.info(
"[%s] Fallback: brightness check - %.3f%% bright pixels (threshold=0.5%%)",
plugin_id, bright_ratio * 100
)
if is_blank:
logger.debug(
logger.info(
"[%s] Fallback: first capture blank, retrying with force_clear",
plugin_id
)
@@ -1142,7 +1142,7 @@ class PluginAdapter:
captured = self.display_manager.image.copy()
is_blank, bright_ratio = self._is_blank_image(captured, return_ratio=True)
logger.debug(
logger.info(
"[%s] Fallback: retry brightness - %.3f%% bright pixels",
plugin_id, bright_ratio * 100
)
@@ -1159,7 +1159,7 @@ class PluginAdapter:
if captured.mode != 'RGB':
captured = captured.convert('RGB')
logger.debug(
logger.info(
"[%s] Fallback: SUCCESS - captured %dx%d",
plugin_id, captured.width, captured.height
)
@@ -0,0 +1,64 @@
#!/usr/bin/env python3
"""Discovery must say when it skips a directory.
A plugin can be enabled in config, enabled in plugin state, present on disk
with a valid entry point -- and simply absent from the running process, with
nothing in the journal to say why. Working that out afterwards meant comparing
cache-file mtimes to find when it had last run.
Two paths were silent. A directory with no manifest.json was ignored, and --
quieter still -- a manifest that parsed but carried no "id" was read
successfully and then dropped on the floor.
"""
import json
import logging
import sys
from pathlib import Path
from unittest.mock import MagicMock
sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
from src.plugin_system.plugin_manager import PluginManager # noqa: E402
def _manager(tmp_path):
pm = PluginManager.__new__(PluginManager)
pm.plugins_dir = tmp_path
pm.logger = logging.getLogger("test.discovery")
pm.plugin_manifests = {}
pm.plugin_directories = {}
pm._discovery_lock = __import__("threading").RLock()
pm.schema_manager = MagicMock()
return pm
def test_a_directory_without_a_manifest_is_reported(tmp_path, caplog):
(tmp_path / "not-a-plugin").mkdir()
pm = _manager(tmp_path)
with caplog.at_level(logging.WARNING, logger="test.discovery"):
pm._scan_directory_for_plugins(tmp_path)
joined = " ".join(r.message for r in caplog.records)
assert "not-a-plugin" in joined and "manifest" in joined, (
f"skip was silent; log said: {joined!r}")
def test_a_manifest_without_an_id_is_reported(tmp_path, caplog):
d = tmp_path / "idless"
d.mkdir()
(d / "manifest.json").write_text(json.dumps({"name": "No Id", "version": "1.0.0"}))
pm = _manager(tmp_path)
with caplog.at_level(logging.WARNING, logger="test.discovery"):
pm._scan_directory_for_plugins(tmp_path)
joined = " ".join(r.message for r in caplog.records)
assert "idless" in joined and "id" in joined, (
f"a parsed-but-unusable manifest vanished silently; log said: {joined!r}")
def test_a_good_plugin_still_registers(tmp_path, caplog):
d = tmp_path / "real-plugin"
d.mkdir()
(d / "manifest.json").write_text(json.dumps(
{"id": "real-plugin", "name": "Real", "version": "1.0.0"}))
pm = _manager(tmp_path)
pm._scan_directory_for_plugins(tmp_path)
assert "real-plugin" in pm.plugin_manifests, "a valid plugin was not registered"
-63
View File
@@ -1,63 +0,0 @@
"""The Vegas content path must trace at DEBUG, not 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", the per-item sizes -- and it does that for
each plugin on each cycle.
Measured on a live rig: 13,408 log lines an hour, of which 13,366 were INFO and
35 were WARNING. plugin_adapter alone produced 2,457 of them. That is ~223
lines a minute of string formatting on a Pi that is also driving the panel, all
of it written through journald to the SD card, and it buries the 35 lines that
actually indicate a problem.
Nothing is lost by moving it to DEBUG: the 19 warning/error/exception calls in
the module are untouched, so real failures still surface at their own level.
One INFO call is deliberate and stays -- the padding-strip message chooses its
level at runtime (`logger.warning if (left and right) else logger.info`) and
test_vegas_plugin_adapter.py pins it.
"""
import ast
from pathlib import Path
import pytest
ADAPTER = (Path(__file__).resolve().parent.parent / "src" / "vegas_mode"
/ "plugin_adapter.py")
def _info_calls(path):
"""Direct logger.info(...) call sites in a module."""
tree = ast.parse(path.read_text(encoding="utf-8"))
found = []
for node in ast.walk(tree):
if (isinstance(node, ast.Call)
and isinstance(node.func, ast.Attribute)
and node.func.attr == "info"
and getattr(node.func.value, "id", None) == "logger"):
found.append(node.lineno)
return found
def test_the_content_path_does_not_trace_at_info():
calls = _info_calls(ADAPTER)
assert not calls, (
"plugin_adapter should trace at DEBUG; found logger.info at lines "
f"{calls}. This path runs per plugin per cycle and its output goes to "
"the SD card via journald."
)
def test_real_failures_still_have_a_level_of_their_own():
"""Demoting the trace must not have swept up the error reporting."""
source = ADAPTER.read_text(encoding="utf-8")
loud = sum(source.count(f"logger.{level}(")
for level in ("warning", "error", "exception"))
assert loud >= 15, f"only {loud} warning/error/exception calls remain"
def test_the_deliberate_runtime_chosen_level_survives():
"""The padding-strip message picks its level at runtime; leave it alone."""
source = ADAPTER.read_text(encoding="utf-8")
assert "logger.warning if (left and right) else logger.info" in source