mqtt2influxdb

dependency updates and housekeeping

• docs: fix example mistake f741850d777821ce6a943194e991f2c34247a323
• dependency updates including mio (including probably harmless in this case https://github.com/advisories/GHSA-6g7w-8wpp-frhj)
• housekeeping, …

Added

• Parse payloads with JSON and MessagePack, adding key{depth}={name} as tags (besides the topic tags). Example: {"foo": {"bar": 1337}} → key1=foo,key2=bar
• Print InfluxDB Line Protocol data when --verbose

Changes

• Show InfluxDB write URL on startup instead of InfluxDB host
• Remove deprecated topic-1 style tags. (deprecated since 0.4.0)

Added

• find values in payloads with units like 12.3 °C (ignore everything after the whitespace)
• autogenerated man pages from CLI definition (clap)

Changed

• reduce heap allocations on InfluxDB line creation.
• reduce heap allocations on MQTT message parsing.
• group CLI options into headings
• systemd: use Service Type=exec

Added

• use --victoria-metrics when there is no database, organisation or bucket required.
• topicSegments shows the amount of segments in the topic.

Breaking Changes

• rename topic-1 to topicE1 (same with topic-2 and topic-3).
  The old name with the - (minus) is still available but deprecated and will be removed in a future release.

Changed

• Update dependencies

Fixes

• Ensure influx org and bucket are both provided when using the Influx API v2

Changed

• Update to clap v4
• Update dependencies

• Switch to current_thread async worker (tokio) to reduce dependencies and less thread switches
• dependency updates, housekeeping, …

Added

• Show InfluxDB error message (from request body) on error.
• Build deb/rpm packages.

Changed

• Increase minimum error wait. This reduces the load on the database as it seems to have some errors currently anyway.
• Higher timeout for InfluxDB writes.

Fixes

• Only attempt to publish finite floats. NaN for example errors anyway.
• Systemd: restart on-failure.

Added

• Handle termination signals (Ctrl-C, SIGTERM, …) and send buffer before closing

Changed

• Payload float detection is way more performant with known (on, true) and other strings.
  This looses support for strange formattings like onLiNe but still works with formattings like online, Online and ONLINE.

Fixes

• Empty MQTT messages are no longer assumed as 0.0. Clearing retained messages for example are empty messages.

Initial release