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fix(event/stream): classify AXIS VMD 4 topics as motion

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The topic table covered the AXIS Guard suite (MotionGuard, FenceGuard,
LoiteringGuard) but not VMD — the stock motion app shipped on every
AXIS camera, and the one an installer configures before reaching for a
paid Guard product.

VMD publishes on tnsaxis:CameraApplicationPlatform/VMD/Camera<N>Profile
<ID>, which fell through every rule to KindUnknown. Consumers that key
recording off KindMotion therefore never recorded, and because an
unrecognised Kind is normally discarded at debug level the failure
presents as silence rather than an error.

Found on a site where an AXIS camera with VMD and a motion recording
trigger produced no recordings across a 9h41m window while its ONVIF
subscription stayed healthy throughout.
This commit is contained in:
T. Tradesman
2026-07-23 11:12:50 +02:00
parent 4c67d896e3
commit 685b65c35e
2 changed files with 11 additions and 3 deletions
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8
event/stream/topics.go
View File

@@ -79,10 +79,12 @@ var topicRules = []struct {
// https://developer.axis.com/vapix/network-video/event-and-action-services/
{"MotionRegionDetector/Motion", KindMotion},
// AXIS Guard suite — vendor analytics apps with Camera<N>Profile<ID>
// suffixes. Treated as motion so they can drive motion-triggered
// recording on cameras using these apps instead of basic VMD.
// AXIS ACAP motion apps with Camera<N>Profile<ID> suffixes. VMD is
// the stock app shipped on the camera; the Guard suite are the
// paid analytics products. Prefix-match because of the suffix.
// https://developer.axis.com/vapix/applications/vmd4
// https://developer.axis.com/vapix/applications/motion-guard
{"CameraApplicationPlatform/VMD/", KindMotion},
{"CameraApplicationPlatform/MotionGuard/", KindMotion},
{"CameraApplicationPlatform/FenceGuard/", KindMotion},
{"CameraApplicationPlatform/LoiteringGuard/", KindMotion},

6
event/stream/topics_test.go
View File

@@ -25,6 +25,12 @@ func TestClassifyTopic(t *testing.T) {
{"axis_fence_guard", "tnsaxis:CameraApplicationPlatform/FenceGuard/Camera1ProfileANY", KindMotion},
{"axis_loitering_guard", "tnsaxis:CameraApplicationPlatform/LoiteringGuard/Camera1ProfileANY", KindMotion},
// AXIS VMD 4 — the stock motion app, and the one an installer
// reaches for before any Guard product. The profile suffix
// varies with the configured VMD profile.
{"axis_vmd4_profile_any", "tnsaxis:CameraApplicationPlatform/VMD/Camera1ProfileANY", KindMotion},
{"axis_vmd4_profile_numbered", "tnsaxis:CameraApplicationPlatform/VMD/Camera1Profile1", KindMotion},
// --- Tampering --------------------------------------------------
{"tamper_detector", "tns1:RuleEngine/TamperDetector/Tamper", KindTampering},