2.2.0
This minor release introduces the following new features
- All Hono components now support reading ECC based keys from PEM files that contain the Base64 encoded DER-encoding of an ECPrivateKey as described in RFC 5915, Section 4.
- The build process now supports creating container images for the arm64 platform. Please refer to the Developer Guide for details.
- The LoraWAN protocol adapter has been extended with support for the Chirpstack V4 provider.
- Hono components now support producing JSON formatted log messages. Please refer to the Admin Guide for details.
- Hono components can now be configured to use the OTEL Jaeger Remote Sampler extension which allows the sampling strategy to be retrieved from a Jaeger back-end dynamically during runtime. Please refer to the Admin Guide for details.
The project leadership certifies that the APIs in this release are "Eclipse Quality".
The shutdown process of the MQTT and AMQP protocol adapters has been optimized. The purpose is removal of redundant operations for devices which maintain a permanent connection during the restarting of adapter instances. This prevents delays and possible errors due the higher rate of invocations of the unregister Command Consumer operation on the Command Router service.
When shutting down, the adapters no longer explicitly unregister Command Consumers and no longer send disconnectedTtdEvents. Instead, the Command Router now sends the connectedTtdEvent and disconnectedTtdEvent on behalf of the protocol adapters.
The Command Router now also sends a disconnectedTtdEvent when a command is received that is targeted at a device that got disconnected (and didn't reconnect) when a protocol adapter was shut down. This happens only once - during the processing of the first command.
The Command Router configuration now also requires hono.messaging configuration if AMQP 1.0 based messaging infrastructure is being used.
The Mongo DB based device registry is now continuously tested to work with Mongo DB 5.0.
The CoAP protocol adapter now uses Eclipse Californium 3.7.0 which fixes CVE-2022-39368