This release concludes the changes made in the area of collecting and reporting metrics that have been started in 0.8. In particular,
- the meter types, names and tags used by Hono for reporting status information have been revised and adapted to provide more relevant information for monitoring a Hono installation.
- Hono's protocol adapters and services by default expose an HTTP endpoint that can be used by a Prometheus back end to scrape metrics.
- the Graphite based legacy metrics format is still supported but users are encouraged to use the Prometheus back end instead.
The MQTT protocol adapter now supports
- publishing of command messages to devices using QoS 1 which allows back end applications that send commands to an MQTT device to be notified of a successful attempt to deliver a command to a device.
- authentication of devices using X.509 client certificates. The client certificates are validated using a trust anchor that can be configured at the tenant level.
Release Date:
Monday, February 25, 2019
Review:
Release Type:
Minor release
New & Noteworthy URL: