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Device Status

The device status goes hand in hand with the rediscovery of the cameras, but goes beyond the scope of just discovery. It is a separate background task running at a specified interval (default 30s) to determine the most accurate operating status of the existing cameras. This applies to all devices regardless of how or where they were added from.

States and Descriptions

Currently, there are 4 different statuses that a camera can have

  • UpWithAuth: Can execute commands requiring credentials
  • UpWithoutAuth: Can only execute commands that do not require credentials. Usually this means the camera's credentials have not been registered with the service yet, or have been changed.
  • Reachable: Can be discovered but no commands can be received.
  • Unreachable: Cannot be seen by service at all. Typically, this means that there is a connection issue either physically or with the network.

Status Check flow for each device

%% Note: The node and edge definitions are split up to make it easier to adjust the %% links between the various nodes. flowchart TD; %% -------- Node Definitions -------- %% CheckDeviceStatus(Check Device Status) UpdateDeviceStatus[Update Device Status
in Core-Metadata] SetLastSeen[Set LastSeen = Now] UpdateMetadata[Update Core-Metadata] CheckNowUpWithAuth{Status Changed
&&
Status == UpWithAuth?} DeviceHasMAC{Device Has
MAC Address?} CreateClient[Create Onvif Client] GetCapabilities[Device::GetCapabilities] CheckUpdatedMAC[Check CredentialsMap for
updated MAC Address] TCPProbe[TCP Probe] GetDeviceInfo[GetDeviceInformation] UpdateDeviceInfo[Update Device Information] UpdateMACAddress[Update MAC Address] UpdateEndpointRef[Update EndpointRefAddress] DeviceUnknown{Device Name
begins with
unknown_unknown_?} RemoveDevice[Remove Device
unknown_unknown_&ltEndpointRef>] CreateDevice[Create Device
&ltMfg&gt-&ltModel&gt-&ltEndpointRef>] %% -------- Graph Definitions -------- %% CheckDeviceStatus --> DeviceHasMAC DeviceHasMAC -->|No| CheckUpdatedMAC DeviceHasMAC -->|Yes| CreateClient CheckUpdatedMAC --> CreateClient subgraph TestConnection[Test Connection Methods] CreateClient --> GetCapabilities GetCapabilities -->|Failed| TCPProbe GetCapabilities -->|Success| GetDeviceInfo GetDeviceInfo -->|Success| UpWithAuth GetDeviceInfo -->|Failed| UpWithoutAuth TCPProbe -->|Failed| Unreachable TCPProbe -->|Success| Reachable end UpWithAuth --> SetLastSeen UpWithoutAuth --> SetLastSeen Reachable --> SetLastSeen Unreachable --> UpdateDeviceStatus UpdateDeviceStatus --> CheckNowUpWithAuth SetLastSeen --> UpdateDeviceStatus CheckNowUpWithAuth -->|Yes| RefreshDevice subgraph RefreshDevice[Refresh Device] UpdateDeviceInfo --> UpdateMACAddress UpdateMACAddress --> UpdateEndpointRef UpdateEndpointRef --> DeviceUnknown DeviceUnknown -->|No| UpdateMetadata DeviceUnknown -->|Yes| RemoveDevice RemoveDevice --> CreateDevice end

Configuration Options

  • Use EnableStatusCheck to enable the device status background service.
  • CheckStatusInterval is the interval at which the service will determine the status of each camera.
EnableStatusCheck = true

# The interval in seconds at which the service will check the connection of all known cameras and update the device status 
# A longer interval will mean the service will detect changes in status less quickly
# Maximum 300s (1 hour)
CheckStatusInterval = 30

Automatic Triggers

Currently, there are some actions that will trigger an automatic status check: - Any modification to the CredentialsMap from the config provider (Consul)