Changelog

Version 1.2 (latest) Publish time: 2025/10/22-25

Added a heartbeat message type.
- Upstream connections only, measurement data may be unaffected by downtime.

{ measurement_id: string time: string (ISO 8601 TimeString [YYYY-MM-DDThh:mm:ss.sssZ]) type: enum string "footfall" | "area_presence" | "heartbeat" field: string value: double tags: list<TagValue>}

Example point for "upstream_downtime_m", sum of minutes of downtime

{ measurement_id: "12341234-1234-1234-1234-abcdabcdabcd" time: "2023-02-07T08:24:27.007000Z" type: "heartbeat" field: "upstream_downtime_m" value: 314134.0 tags: []}

Example point for "upstream_heartbeat_m", reports 1.0 if the connection is up the last minute, 0.0 if down.

{ measurement_id: "12341234-1234-1234-1234-abcdabcdabcd" time: "2023-02-07T08:24:27.007000Z" type: "heartbeat" field: "upstream_heartbeat_m" value: 1.0 tags: []}

Version 1.1

Message types are split on subtopics

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