Addresses CodeRabbit review on PR #1765 (pullrequestreview-5069337680).
pihole_monitor.py:
- last_raw is now tracked per source ({"primary": N, "secondary": M}
per device) instead of one combined value. Combining raw totals
across sources before diffing let a counter reset on one instance
silently net out against real traffic on the other - e.g. primary
+2000 (a real spike) and secondary resetting 1000->5 (-995) would
combine into a raw delta of only 1005, hiding most of the primary's
actual spike behind the secondary's unrelated restart.
- New aggregate_source_deltas(): diffs each source independently via
compute_delta(), then sums only the valid deltas. A source with no
valid delta this run (bootstrapping or just reset) contributes
nothing and doesn't block the others; each source keeps its own
reference point going forward.
- State loaded from before this change (last_raw as a plain number,
not per-source) is now tolerated instead of crashing - treated as no
prior reference point, so every source just bootstraps fresh on the
next run.
README.md:
- Fixed a self-contradicting line: a less frequent schedule means
larger per-run deltas, so PIHOLEMON_MIN_BLOCKED may need *raising*,
not lowering as it previously said.
- Corrected PIHOLEMON_HISTORY_DAYS guidance: it's a retention window,
not a detection delay. A new device becomes evaluable on its 3rd
successful run (1st anchors the counter, 2nd records the first
delta, 3rd has a baseline to compare against), not after the full
retention window.
Tests: 54 (up from 48). New coverage: aggregate_source_deltas() unit
tests including the exact dual-source reset-masking scenario, a
main()-level integration test for the same, and a regression test for
tolerating pre-per-source state. Both the reset-masking fix and the
legacy-state guard verified via mutation testing (reverted each,
confirmed the relevant tests fail, restored). 99% line+branch coverage
maintained.
References PR #1765.
Docs:
- Added PIHOLEMON to docs/PLUGINS.md and a new "Approach 4" section in
docs/PIHOLE_GUIDE.md, leading with anomaly detection (the actual
differentiator vs PIHOLEAPI) and explaining when to pick each plugin.
- README/PLUGINS.md/config.json's UI-facing description all reordered
and shortened to lead with anomaly detection instead of device
import, and to drop implementation detail that belongs in the
README, not the Settings page.
- Trimmed the "Why not extend PIHOLEAPI" README section per feedback -
useful context for a maintainer, not for an end user configuring
the plugin.
config.json / pihole_monitor.py:
- RUN defaults to "disabled", matching every other non-core plugin.
- VERIFY_SSL split into PRIMARY_VERIFY_SSL / SECONDARY_VERIFY_SSL -
each instance can be http/https independently. Settings reordered so
each *_VERIFY_SSL sits right under its matching *_PASSWORD.
- GRAPHQL_TOKEN removed; graphql_token now reads the core API_TOKEN
setting instead of a plugin-specific duplicate.
- GRAPHQL_URL replaced with a GET_OWNER boolean - the endpoint is now
derived from this app's own GRAPHQL_PORT (single source of truth)
instead of a URL the user had to keep in sync by hand.
- HISTORY_LENGTH (run count) replaced with HISTORY_DAYS (a real time
window): state now stores [timestamp, delta] samples and
trim_history() drops anything older than the window, so the
baseline means the same thing regardless of schedule - a faster
schedule adds more data points instead of shrinking the window.
- STATE_FILE moved from the log folder to dbFolderPath, so the rolling
anomaly baseline survives NetAlertX upgrades instead of being wiped
with the logs.
- netalertx_device_owner() (1 GraphQL call per device) replaced by
netalertx_device_owners() (1 call per run, batched) - avoids N
blocking round-trips on a large network.
- Fixed a zero-baseline bug: `bool(... and baseline and ...)` silently
exempted a device with an all-zero blocked-query history (0.0 is
falsy in Python) from ever being flagged, even on its first real
spike. Now checks `baseline is not None`.
- Fixed the placeholder-MAC filter: only excluded the literal "ip-::",
not Pi-hole's general "ip-<address>" placeholder pattern. Caught
downstream by is_mac() either way, but now the actual placeholder
check does what it looks like it does.
- Fixed a cumulative-counter bug: Pi-hole's /api/stats/top_clients
returns a count that's cumulative since FTL last started, not a
per-interval or daily-resetting one (confirmed against FTL's own
source and long-standing user reports that it doesn't reset at
midnight). Comparing that raw total directly against a rolling
average made any device's ordinary growing traffic look like an
escalating anomaly. compute_delta() now diffs each run's raw count
against the previous run's (state gained a per-key last_raw
reference point alongside the delta history) - None (not 0) on the
first-ever run for a device or right after a counter reset, so
those runs re-anchor the reference point instead of fabricating or
swallowing a delta.
- RUN_SCHD default changed from every 6 hours to every 5 minutes now
that the baseline window is real days, not run count, so a frequent
schedule only adds data points instead of narrowing the window; also
matches the default most other device-scanner plugins use.
- RUN_SCHD gained the same live cron-validity checkmark ARPSCAN and
other scanner plugins use (a ✓/✗ icon next to the field, validated
client-side against a regex) - reuses the existing generic
validateRegex() widget, nothing plugin-specific to build.
Tests: 48 tests (up from 37), 99% line+branch coverage. Every fix
above verified via mutation testing (deliberately broken, confirmed
the relevant test fails, then restored).
CodeRabbit follow-up on PR #1765
(https://github.com/netalertx/NetAlertX/pull/1765#discussion_r3888374014):
test_main_history_length_never_produces_empty_or_growing_unbounded only
asserted len(history) >= 1, which a mis-clamped history_length (e.g.
keeping 4 items instead of 1) would still pass unnoticed.
Replaced with test_main_history_length_clamps_and_trims_exactly,
seeding distinct ordered values and asserting the exact retained
history against each PIHOLEMON_HISTORY_LENGTH boundary. Verified it
actually catches a broken clamp: temporarily reverted the
max(1, ...) fix in pihole_monitor.py, confirmed this test fails
([] == [40]) while the rest of the suite still passes, then restored
the fix.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CHJAArRiet4GmXUsxnNLdW
Addresses 5 of the 6 actionable comments from CodeRabbit's review of
PR #1765 (netalertx/NetAlertX#1765), plus adds test coverage:
- fetch_top_blocked_clients() returns None on failure instead of {},
so a failed request can no longer be mistaken for "genuinely zero
blocked queries this run" and silently write a false 0 into a
device's rolling history baseline. main() now tracks a
stats_complete flag and skips anomaly evaluation + history
persistence entirely for a run with incomplete blocked-query data.
- fetch_top_blocked_clients() is now called with count=max_clients
(the existing PIHOLEMON_API_MAXCLIENTS setting) instead of a
hardcoded default of 50, so clients beyond the top 50 are no longer
silently dropped from anomaly detection.
- New build_ip_to_mac() derives the IP->MAC identity map from every
gathered device entry instead of from merge_device_entries()'s
by-MAC-deduplicated output, which only kept one IP per device and
silently lost a multi-IP device's other IPs (misattributing their
blocked-query traffic to a bare IP instead of the real MAC).
- PIHOLEMON_HISTORY_LENGTH is clamped to at least 1, so a negative
setting can no longer reach the history[-history_length:] slice
with a nonsensical negative-of-negative length.
- PIHOLEMON_VERIFY_SSL now defaults to true (was false, matching the
official PIHOLEAPI plugin's convention). README documents the
http:// vs https:// credentials trade-off explicitly rather than
forcing https:// - most home Pi-hole setups, including the one this
plugin targets, run over plain HTTP on a trusted LAN.
- Added test/plugins/test_pihole_monitor.py (37 tests, 99% line and
branch coverage of pihole_monitor.py per pytest-cov - only the
`if __name__ == '__main__':` entry-point guard is unreached):
auth and deauth success/failure paths, the None-sentinel-on-failure
contract, fetch_devices()'s own failure path, build_ip_to_mac()'s
multi-IP fix, gather_device_entries()'s skip branches and fake-MAC
fallback, netalertx_device_owner()'s success/failure/no-URL paths,
and main()-level coverage for source aggregation, the
stats_complete gate, the history_length boundary clamp, the
CONSIDER_ONLINE fallback, an unconfigured-sources run, and the
offline-device / invalid-MAC / unknown-IP / owner-lookup branches
together in one run.
Not addressed: CodeRabbit's suggestion to hard-reject http:// URLs in
auth(). Diverges deliberately - it would break the plugin's majority
use case (Pi-hole admin API on a trusted home LAN without TLS), which
this repo's own PIHOLEAPI plugin also targets over plain HTTP.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CHJAArRiet4GmXUsxnNLdW
Does two jobs against the same Pi-hole connection(s), instead of two
separately configured plugins:
1. Device import - same job as the official PIHOLEAPI (pihole_api_scan)
plugin, but supports an optional secondary/failover Pi-hole natively
(accepts two sets of credentials instead of forking the official
plugin, which hardcodes its settings-key prefix and doesn't support
multiple instances).
2. Query anomaly detection - flags a device whose blocked-query count
spikes well above its own recent rolling average (signature of
malware/a compromised device beaconing out), keyed by MAC address
(not IP, which changes under DHCP) and combined across both Pi-hole
instances so a compromised device can't evade detection by switching
resolvers.
Notifications are delegated entirely to NetAlertX's own Watched/Report
on mechanism - the plugin never calls a notification service directly.
Live-tested against a two-Pi-hole home setup (v26.8.5) for several days,
including two real bugs found and fixed during that testing (an
offline-filtered device losing its MAC and falling back to a bare-IP
identifier, and a boolean-expression flake8 style fix).
jokob-sk