mirror of
https://github.com/blakeblackshear/frigate.git
synced 2026-10-12 17:52:48 +03:00
Camera profile support (#22482)
* add CameraProfileConfig model for named config overrides * add profiles field to CameraConfig * add active_profile field to FrigateConfig Runtime-only field excluded from YAML serialization, tracks which profile is currently active. * add ProfileManager for profile activation and persistence Handles snapshotting base configs, applying profile overrides via deep_merge + apply_section_update, publishing ZMQ updates, and persisting active profile to /config/.active_profile. * add profile API endpoints (GET /profiles, GET/PUT /profile) * add MQTT and dispatcher integration for profiles - Subscribe to frigate/profile/set MQTT topic - Publish profile/state and profiles/available on connect - Add _on_profile_command handler to dispatcher - Broadcast active profile state on WebSocket connect * wire ProfileManager into app startup and FastAPI - Create ProfileManager after dispatcher init - Restore persisted profile on startup - Pass dispatcher and profile_manager to FastAPI app * add tests for invalid profile values and keys Tests that Pydantic rejects: invalid field values (fps: "not_a_number"), unknown section keys (ffmpeg in profile), invalid nested values, and invalid profiles in full config parsing. * formatting * fix CameraLiveConfig JSON serialization error on profile activation refactor _publish_updates to only publish ZMQ updates for sections that actually changed, not all sections on affected cameras. * consolidate * add enabled field to camera profiles for enabling/disabling cameras * add zones support to camera profiles * add frontend profile types, color utility, and config save support * add profile state management and save preview support * add profileName prop to BaseSection for profile-aware config editing * add profile section dropdown and wire into camera settings pages * add per-profile camera enable/disable to Camera Management view * add profiles summary page with card-based layout and fix backend zone comparison bug * add active profile badge to settings toolbar * i18n * add red dot for any pending changes including profiles * profile support for mask and zone editor * fix hidden field validation errors caused by lodash wildcard and schema gaps lodash unset does not support wildcard (*) segments, so hidden fields like filters.*.mask were never stripped from form data, leaving null raw_coordinates that fail RJSF anyOf validation. Add unsetWithWildcard helper and also strip hidden fields from the JSON schema itself as defense-in-depth. * add face_recognition and lpr to profile-eligible sections * move profile dropdown from section panes to settings header * add profiles enable toggle and improve empty state * formatting * tweaks * tweak colors and switch * fix profile save diff, masksAndZones delete, and config sync * ui tweaks * ensure profile manager gets updated config * rename profile settings to ui settings * refactor profilesview and add dots/border colors when overridden * implement an update_config method for profile manager * fix mask deletion * more unique colors * add top-level profiles config section with friendly names * implement profile friendly names and improve profile UI - Add ProfileDefinitionConfig type and profiles field to FrigateConfig - Use ProfilesApiResponse type with friendly_name support throughout - Replace Record<string, unknown> with proper JsonObject/JsonValue types - Add profile creation form matching zone pattern (Zod + NameAndIdFields) - Add pencil icon for renaming profile friendly names in ProfilesView - Move Profiles menu item to first under Camera Configuration - Add activity indicators on save/rename/delete buttons - Display friendly names in CameraManagementView profile selector - Fix duplicate colored dots in management profile dropdown - Fix i18n namespace for overridden base config tooltips - Move profile override deletion from dropdown trash icon to footer button with confirmation dialog, matching Reset to Global pattern - Remove Add Profile from section header dropdown to prevent saving camera overrides before top-level profile definition exists - Clean up newProfiles state after API profile deletion - Refresh profiles SWR cache after saving profile definitions * remove profile badge in settings and add profiles to main menu * use icon only on mobile * change color order * docs * show activity indicator on trash icon while deleting a profile * tweak language * immediately create profiles on backend instead of deferring to Save All * hide restart-required fields when editing a profile section fields that require a restart cannot take effect via profile switching, so they are merged into hiddenFields when profileName is set * show active profile indicator in desktop status bar * fix profile config inheritance bug where Pydantic defaults override base values The /config API was dumping profile overrides with model_dump() which included all Pydantic defaults. When the frontend merged these over the camera's base config, explicitly-set base values were lost. Now profile overrides are re-dumped with exclude_unset=True so only user-specified fields are returned. Also fixes the Save All path generating spurious deletion markers for restart-required fields that are hidden during profile editing but not excluded from the raw data sanitization in prepareSectionSavePayload. * docs tweaks * docs tweak * formatting * formatting * fix typing * fix test pollution test_maintainer was injecting MagicMock() into sys.modules["frigate.config.camera.updater"] at module load time and never restoring it. When the profile tests later imported CameraConfigUpdateEnum and CameraConfigUpdateTopic from that module, they got mock objects instead of the real dataclass/enum, so equality comparisons always failed * remove * fix settings showing profile-merged values when editing base config When a profile is active, the in-memory config contains effective (profile-merged) values. The settings UI was displaying these merged values even when the "Base Config" view was selected. Backend: snapshot pre-profile base configs in ProfileManager and expose them via a `base_config` key in the /api/config camera response when a profile is active. The top-level sections continue to reflect the effective running config. Frontend: read from `base_config` when available in BaseSection, useConfigOverride, useAllCameraOverrides, and prepareSectionSavePayload. Include formData labels in Object/Audio switches widgets so that labels added only by a profile override remain visible when editing that profile. * use rasterized_mask as field makes it easier to exclude from the schema with exclude=True prevents leaking of the field when using model_dump for profiles * fix zones - Fix zone colors not matching across profiles by falling back to base zone color when profile zone data lacks a color field - Use base_config for base-layer values in masks/zones view so profile-merged values don't pollute the base config editing view - Handle zones separately in profile manager snapshot/restore since ZoneConfig requires special serialization (color as private attr, contour generation) - Inherit base zone color and generate contours for profile zone overrides in profile manager * formatting * don't require restart for camera enabled change for profiles * publish camera state when changing profiles * formatting * remove available profiles from mqtt * improve typing
This commit is contained in:
@@ -34,6 +34,7 @@ from .mqtt import CameraMqttConfig
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from .notification import NotificationConfig
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from .objects import ObjectConfig
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from .onvif import OnvifConfig
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from .profile import CameraProfileConfig
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from .record import RecordConfig
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from .review import ReviewConfig
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from .snapshots import SnapshotsConfig
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@@ -184,6 +185,12 @@ class CameraConfig(FrigateBaseModel):
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title="Camera URL",
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description="URL to visit the camera directly from system page",
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)
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profiles: dict[str, CameraProfileConfig] = Field(
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default_factory=dict,
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title="Profiles",
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description="Named config profiles with partial overrides that can be activated at runtime.",
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)
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zones: dict[str, ZoneConfig] = Field(
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default_factory=dict,
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title="Zones",
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@@ -0,0 +1,44 @@
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"""Camera profile configuration for named config overrides."""
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from typing import Optional
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from ..base import FrigateBaseModel
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from ..classification import (
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CameraFaceRecognitionConfig,
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CameraLicensePlateRecognitionConfig,
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)
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from .audio import AudioConfig
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from .birdseye import BirdseyeCameraConfig
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from .detect import DetectConfig
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from .motion import MotionConfig
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from .notification import NotificationConfig
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from .objects import ObjectConfig
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from .record import RecordConfig
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from .review import ReviewConfig
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from .snapshots import SnapshotsConfig
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from .zone import ZoneConfig
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__all__ = ["CameraProfileConfig"]
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class CameraProfileConfig(FrigateBaseModel):
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"""A named profile containing partial camera config overrides.
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Sections set to None inherit from the camera's base config.
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Sections that are defined get Pydantic-validated, then only
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explicitly-set fields are used as overrides via exclude_unset.
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"""
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enabled: Optional[bool] = None
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audio: Optional[AudioConfig] = None
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birdseye: Optional[BirdseyeCameraConfig] = None
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detect: Optional[DetectConfig] = None
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face_recognition: Optional[CameraFaceRecognitionConfig] = None
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lpr: Optional[CameraLicensePlateRecognitionConfig] = None
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motion: Optional[MotionConfig] = None
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notifications: Optional[NotificationConfig] = None
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objects: Optional[ObjectConfig] = None
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record: Optional[RecordConfig] = None
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review: Optional[ReviewConfig] = None
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snapshots: Optional[SnapshotsConfig] = None
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zones: Optional[dict[str, ZoneConfig]] = None
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@@ -27,6 +27,8 @@ class CameraConfigUpdateEnum(str, Enum):
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review = "review"
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review_genai = "review_genai"
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semantic_search = "semantic_search" # for semantic search triggers
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face_recognition = "face_recognition"
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lpr = "lpr"
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snapshots = "snapshots"
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zones = "zones"
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@@ -119,6 +121,10 @@ class CameraConfigUpdateSubscriber:
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config.review.genai = updated_config
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elif update_type == CameraConfigUpdateEnum.semantic_search:
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config.semantic_search = updated_config
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elif update_type == CameraConfigUpdateEnum.face_recognition:
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config.face_recognition = updated_config
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elif update_type == CameraConfigUpdateEnum.lpr:
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config.lpr = updated_config
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elif update_type == CameraConfigUpdateEnum.snapshots:
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config.snapshots = updated_config
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elif update_type == CameraConfigUpdateEnum.zones:
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+25
-25
@@ -12,7 +12,6 @@ from pydantic import (
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Field,
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TypeAdapter,
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ValidationInfo,
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field_serializer,
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field_validator,
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model_validator,
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)
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@@ -68,6 +67,7 @@ from .env import EnvVars
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from .logger import LoggerConfig
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from .mqtt import MqttConfig
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from .network import NetworkingConfig
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from .profile import ProfileDefinitionConfig
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from .proxy import ProxyConfig
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from .telemetry import TelemetryConfig
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from .tls import TlsConfig
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@@ -97,8 +97,7 @@ stream_info_retriever = StreamInfoRetriever()
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class RuntimeMotionConfig(MotionConfig):
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"""Runtime version of MotionConfig with rasterized masks."""
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# The rasterized numpy mask (combination of all enabled masks)
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rasterized_mask: np.ndarray = None
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rasterized_mask: np.ndarray = Field(default=None, exclude=True)
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def __init__(self, **config):
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frame_shape = config.get("frame_shape", (1, 1))
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@@ -144,24 +143,13 @@ class RuntimeMotionConfig(MotionConfig):
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empty_mask[:] = 255
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self.rasterized_mask = empty_mask
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def dict(self, **kwargs):
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ret = super().model_dump(**kwargs)
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if "rasterized_mask" in ret:
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ret.pop("rasterized_mask")
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return ret
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@field_serializer("rasterized_mask", when_used="json")
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def serialize_rasterized_mask(self, value: Any, info):
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return None
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model_config = ConfigDict(arbitrary_types_allowed=True, extra="ignore")
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class RuntimeFilterConfig(FilterConfig):
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"""Runtime version of FilterConfig with rasterized masks."""
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# The rasterized numpy mask (combination of all enabled masks)
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rasterized_mask: Optional[np.ndarray] = None
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rasterized_mask: Optional[np.ndarray] = Field(default=None, exclude=True)
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def __init__(self, **config):
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frame_shape = config.get("frame_shape", (1, 1))
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@@ -225,16 +213,6 @@ class RuntimeFilterConfig(FilterConfig):
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else:
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self.rasterized_mask = None
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def dict(self, **kwargs):
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ret = super().model_dump(**kwargs)
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if "rasterized_mask" in ret:
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ret.pop("rasterized_mask")
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return ret
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@field_serializer("rasterized_mask", when_used="json")
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def serialize_rasterized_mask(self, value: Any, info):
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return None
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model_config = ConfigDict(arbitrary_types_allowed=True, extra="ignore")
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@@ -561,6 +539,19 @@ class FrigateConfig(FrigateBaseModel):
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description="Configuration for named camera groups used to organize cameras in the UI.",
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)
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profiles: Dict[str, ProfileDefinitionConfig] = Field(
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default_factory=dict,
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title="Profiles",
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description="Named profile definitions with friendly names. Camera profiles must reference names defined here.",
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)
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active_profile: Optional[str] = Field(
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default=None,
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title="Active profile",
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description="Currently active profile name. Runtime-only, not persisted in YAML.",
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exclude=True,
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)
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_plus_api: PlusApi
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@property
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@@ -910,6 +901,15 @@ class FrigateConfig(FrigateBaseModel):
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verify_objects_track(camera_config, labelmap_objects)
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verify_lpr_and_face(self, camera_config)
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# Validate camera profiles reference top-level profile definitions
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for cam_name, cam_config in self.cameras.items():
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for profile_name in cam_config.profiles:
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if profile_name not in self.profiles:
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raise ValueError(
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f"Camera '{cam_name}' references profile '{profile_name}' "
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f"which is not defined in the top-level 'profiles' section"
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)
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# set names on classification configs
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for name, config in self.classification.custom.items():
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config.name = name
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@@ -0,0 +1,20 @@
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"""Top-level profile definition configuration."""
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from pydantic import Field
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from .base import FrigateBaseModel
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__all__ = ["ProfileDefinitionConfig"]
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class ProfileDefinitionConfig(FrigateBaseModel):
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"""Defines a named profile with a human-readable display name.
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The dict key is the machine name used internally; friendly_name
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is the label shown in the UI and API responses.
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"""
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friendly_name: str = Field(
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title="Friendly name",
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description="Display name for this profile shown in the UI.",
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)
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@@ -0,0 +1,334 @@
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"""Profile manager for activating/deactivating named config profiles."""
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import copy
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import logging
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from pathlib import Path
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from typing import Optional
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from frigate.config.camera.updater import (
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CameraConfigUpdateEnum,
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CameraConfigUpdatePublisher,
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CameraConfigUpdateTopic,
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)
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from frigate.config.camera.zone import ZoneConfig
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from frigate.const import CONFIG_DIR
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from frigate.util.builtin import deep_merge
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from frigate.util.config import apply_section_update
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logger = logging.getLogger(__name__)
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PROFILE_SECTION_UPDATES: dict[str, CameraConfigUpdateEnum] = {
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"audio": CameraConfigUpdateEnum.audio,
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"birdseye": CameraConfigUpdateEnum.birdseye,
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"detect": CameraConfigUpdateEnum.detect,
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"face_recognition": CameraConfigUpdateEnum.face_recognition,
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"lpr": CameraConfigUpdateEnum.lpr,
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"motion": CameraConfigUpdateEnum.motion,
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"notifications": CameraConfigUpdateEnum.notifications,
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"objects": CameraConfigUpdateEnum.objects,
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"record": CameraConfigUpdateEnum.record,
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"review": CameraConfigUpdateEnum.review,
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"snapshots": CameraConfigUpdateEnum.snapshots,
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"zones": CameraConfigUpdateEnum.zones,
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}
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PERSISTENCE_FILE = Path(CONFIG_DIR) / ".active_profile"
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class ProfileManager:
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"""Manages profile activation, persistence, and config application."""
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def __init__(
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self,
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config,
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config_updater: CameraConfigUpdatePublisher,
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dispatcher=None,
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):
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from frigate.config.config import FrigateConfig
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self.config: FrigateConfig = config
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self.config_updater = config_updater
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self.dispatcher = dispatcher
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self._base_configs: dict[str, dict[str, dict]] = {}
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self._base_api_configs: dict[str, dict[str, dict]] = {}
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self._base_enabled: dict[str, bool] = {}
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self._base_zones: dict[str, dict[str, ZoneConfig]] = {}
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self._snapshot_base_configs()
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def _snapshot_base_configs(self) -> None:
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"""Snapshot each camera's current section configs, enabled, and zones."""
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for cam_name, cam_config in self.config.cameras.items():
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self._base_configs[cam_name] = {}
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self._base_api_configs[cam_name] = {}
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self._base_enabled[cam_name] = cam_config.enabled
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self._base_zones[cam_name] = copy.deepcopy(cam_config.zones)
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for section in PROFILE_SECTION_UPDATES:
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section_value = getattr(cam_config, section, None)
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if section_value is None:
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continue
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if section == "zones":
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# zones is a dict of ZoneConfig models
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self._base_configs[cam_name][section] = {
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name: zone.model_dump() for name, zone in section_value.items()
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}
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self._base_api_configs[cam_name][section] = {
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name: {
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**zone.model_dump(
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mode="json",
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warnings="none",
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exclude_none=True,
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),
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"color": zone.color,
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}
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for name, zone in section_value.items()
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}
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else:
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self._base_configs[cam_name][section] = section_value.model_dump()
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self._base_api_configs[cam_name][section] = (
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section_value.model_dump(
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mode="json",
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warnings="none",
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exclude_none=True,
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)
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)
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def update_config(self, new_config) -> None:
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"""Update config reference after config/set replaces the in-memory config.
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Preserves active profile state: re-snapshots base configs from the new
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(freshly parsed) config, then re-applies profile overrides if a profile
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was active.
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"""
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current_active = self.config.active_profile
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self.config = new_config
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# Re-snapshot base configs from the new config (which has base values)
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self._base_configs.clear()
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self._base_api_configs.clear()
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self._base_enabled.clear()
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self._base_zones.clear()
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self._snapshot_base_configs()
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# Re-apply profile overrides without publishing ZMQ updates
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# (the config/set caller handles its own ZMQ publishing)
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if current_active is not None:
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if current_active in self.config.profiles:
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changed: dict[str, set[str]] = {}
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self._apply_profile_overrides(current_active, changed)
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self.config.active_profile = current_active
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else:
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# Profile was deleted — deactivate
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self.config.active_profile = None
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self._persist_active_profile(None)
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def activate_profile(self, profile_name: Optional[str]) -> Optional[str]:
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"""Activate a profile by name, or deactivate if None.
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Args:
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profile_name: Profile name to activate, or None to deactivate.
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Returns:
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None on success, or an error message string on failure.
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"""
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if profile_name is not None:
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if profile_name not in self.config.profiles:
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return (
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f"Profile '{profile_name}' is not defined in the profiles section"
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)
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# Track which camera/section pairs get changed for ZMQ publishing
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changed: dict[str, set[str]] = {}
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# Reset all cameras to base config
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self._reset_to_base(changed)
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# Apply new profile overrides if activating
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if profile_name is not None:
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err = self._apply_profile_overrides(profile_name, changed)
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if err:
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return err
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# Publish ZMQ updates only for sections that actually changed
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self._publish_updates(changed)
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self.config.active_profile = profile_name
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self._persist_active_profile(profile_name)
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logger.info(
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"Profile %s",
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f"'{profile_name}' activated" if profile_name else "deactivated",
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)
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return None
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def _reset_to_base(self, changed: dict[str, set[str]]) -> None:
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"""Reset all cameras to their base (no-profile) config."""
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for cam_name, cam_config in self.config.cameras.items():
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# Restore enabled state
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base_enabled = self._base_enabled.get(cam_name)
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if base_enabled is not None and cam_config.enabled != base_enabled:
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cam_config.enabled = base_enabled
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changed.setdefault(cam_name, set()).add("enabled")
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# Restore zones (always restore from snapshot; direct Pydantic
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# comparison fails when ZoneConfig contains numpy arrays)
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base_zones = self._base_zones.get(cam_name)
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if base_zones is not None:
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cam_config.zones = copy.deepcopy(base_zones)
|
||||
changed.setdefault(cam_name, set()).add("zones")
|
||||
|
||||
# Restore section configs (zones handled above)
|
||||
base = self._base_configs.get(cam_name, {})
|
||||
for section in PROFILE_SECTION_UPDATES:
|
||||
if section == "zones":
|
||||
continue
|
||||
base_data = base.get(section)
|
||||
if base_data is None:
|
||||
continue
|
||||
err = apply_section_update(cam_config, section, base_data)
|
||||
if err:
|
||||
logger.error(
|
||||
"Failed to reset section '%s' on camera '%s': %s",
|
||||
section,
|
||||
cam_name,
|
||||
err,
|
||||
)
|
||||
else:
|
||||
changed.setdefault(cam_name, set()).add(section)
|
||||
|
||||
def _apply_profile_overrides(
|
||||
self, profile_name: str, changed: dict[str, set[str]]
|
||||
) -> Optional[str]:
|
||||
"""Apply profile overrides for all cameras that have the named profile."""
|
||||
for cam_name, cam_config in self.config.cameras.items():
|
||||
profile = cam_config.profiles.get(profile_name)
|
||||
if profile is None:
|
||||
continue
|
||||
|
||||
# Apply enabled override
|
||||
if profile.enabled is not None and cam_config.enabled != profile.enabled:
|
||||
cam_config.enabled = profile.enabled
|
||||
changed.setdefault(cam_name, set()).add("enabled")
|
||||
|
||||
# Apply zones override — merge profile zones into base zones
|
||||
if profile.zones is not None:
|
||||
base_zones = self._base_zones.get(cam_name, {})
|
||||
merged_zones = copy.deepcopy(base_zones)
|
||||
merged_zones.update(profile.zones)
|
||||
# Profile zone objects are parsed without colors or contours
|
||||
# (those are set during CameraConfig init / post-validation).
|
||||
# Inherit the base zone's color when available, and ensure
|
||||
# every zone has a valid contour for rendering.
|
||||
for name, zone in merged_zones.items():
|
||||
if zone.contour.size == 0:
|
||||
zone.generate_contour(cam_config.frame_shape)
|
||||
if zone.color == (0, 0, 0) and name in base_zones:
|
||||
zone._color = base_zones[name].color
|
||||
cam_config.zones = merged_zones
|
||||
changed.setdefault(cam_name, set()).add("zones")
|
||||
|
||||
base = self._base_configs.get(cam_name, {})
|
||||
|
||||
for section in PROFILE_SECTION_UPDATES:
|
||||
if section == "zones":
|
||||
continue
|
||||
profile_section = getattr(profile, section, None)
|
||||
if profile_section is None:
|
||||
continue
|
||||
|
||||
overrides = profile_section.model_dump(exclude_unset=True)
|
||||
if not overrides:
|
||||
continue
|
||||
|
||||
base_data = base.get(section, {})
|
||||
merged = deep_merge(overrides, base_data)
|
||||
|
||||
err = apply_section_update(cam_config, section, merged)
|
||||
if err:
|
||||
return f"Failed to apply profile '{profile_name}' section '{section}' on camera '{cam_name}': {err}"
|
||||
|
||||
changed.setdefault(cam_name, set()).add(section)
|
||||
|
||||
return None
|
||||
|
||||
def _publish_updates(self, changed: dict[str, set[str]]) -> None:
|
||||
"""Publish ZMQ config updates only for sections that changed."""
|
||||
for cam_name, sections in changed.items():
|
||||
cam_config = self.config.cameras.get(cam_name)
|
||||
if cam_config is None:
|
||||
continue
|
||||
|
||||
for section in sections:
|
||||
if section == "enabled":
|
||||
self.config_updater.publish_update(
|
||||
CameraConfigUpdateTopic(
|
||||
CameraConfigUpdateEnum.enabled, cam_name
|
||||
),
|
||||
cam_config.enabled,
|
||||
)
|
||||
if self.dispatcher is not None:
|
||||
self.dispatcher.publish(
|
||||
f"{cam_name}/enabled/state",
|
||||
"ON" if cam_config.enabled else "OFF",
|
||||
retain=True,
|
||||
)
|
||||
continue
|
||||
|
||||
if section == "zones":
|
||||
self.config_updater.publish_update(
|
||||
CameraConfigUpdateTopic(CameraConfigUpdateEnum.zones, cam_name),
|
||||
cam_config.zones,
|
||||
)
|
||||
continue
|
||||
|
||||
update_enum = PROFILE_SECTION_UPDATES.get(section)
|
||||
if update_enum is None:
|
||||
continue
|
||||
settings = getattr(cam_config, section, None)
|
||||
if settings is not None:
|
||||
self.config_updater.publish_update(
|
||||
CameraConfigUpdateTopic(update_enum, cam_name),
|
||||
settings,
|
||||
)
|
||||
|
||||
def _persist_active_profile(self, profile_name: Optional[str]) -> None:
|
||||
"""Persist the active profile name to disk."""
|
||||
try:
|
||||
if profile_name is None:
|
||||
PERSISTENCE_FILE.unlink(missing_ok=True)
|
||||
else:
|
||||
PERSISTENCE_FILE.write_text(profile_name)
|
||||
except OSError:
|
||||
logger.exception("Failed to persist active profile")
|
||||
|
||||
@staticmethod
|
||||
def load_persisted_profile() -> Optional[str]:
|
||||
"""Load the persisted active profile name from disk."""
|
||||
try:
|
||||
if PERSISTENCE_FILE.exists():
|
||||
name = PERSISTENCE_FILE.read_text().strip()
|
||||
return name if name else None
|
||||
except OSError:
|
||||
logger.exception("Failed to load persisted profile")
|
||||
return None
|
||||
|
||||
def get_base_configs_for_api(self, camera_name: str) -> dict[str, dict]:
|
||||
"""Return base (pre-profile) section configs for a camera.
|
||||
|
||||
These are JSON-serializable dicts suitable for direct inclusion in
|
||||
the /api/config response, with None values already excluded.
|
||||
"""
|
||||
return self._base_api_configs.get(camera_name, {})
|
||||
|
||||
def get_available_profiles(self) -> list[dict[str, str]]:
|
||||
"""Get list of all profile definitions from the top-level config."""
|
||||
return [
|
||||
{"name": name, "friendly_name": defn.friendly_name}
|
||||
for name, defn in sorted(self.config.profiles.items())
|
||||
]
|
||||
|
||||
def get_profile_info(self) -> dict:
|
||||
"""Get profile state info for API responses."""
|
||||
return {
|
||||
"profiles": self.get_available_profiles(),
|
||||
"active_profile": self.config.active_profile,
|
||||
}
|
||||
Reference in New Issue
Block a user