TwT.HealthChecks.Mqtt

This health check add-on checks the state of a Mqtt broker. The NuGet can be found here.

The AddMqtt() method adds a new health check with a specified name and the implementation of type IHealthCheck. This is a custom class that implements IHealthCheck, which takes either a IMqttClient or a IManagedMqttClient client a constructor parameter. Besides the client it also takes either a IMqttClientOptions or a IManagedMqttClientOptions parameter. This executes a simple query to check if the connection to the Mqtt broker is successful. It returns HealthCheckResult.Healthy() if the query was executed successfully and a FailureStatus with the actual exception when it fails.

Features

• Check if connection to broker can be set up
  • Mqtt managed client
  • Mqtt unmanaged client
• Ping the broker if the connection is setup

Getting started

Configure the services and add mqtt Health Check this way:

        services
            .AddHealthChecksUI()
            .AddInMemoryStorage()
            .Services
            .AddHealthChecks()
            .AddMqtt(client, managedClient);

Example

Besides the actual implementation this repo also holds an example project that can be used as a playground and test out the application. Do note that you need to provide your own Mqtt server to test against.

Version history

This package makes use of the Semantic Versioning.

Given a version number MAJOR.MINOR.PATCH, increment the:

1. MAJOR version when you make incompatible API changes,
2. MINOR version when you add functionality in a backwards compatible manner, and
3. PATCH version when you make backwards compatible bug fixes.

Additional labels for pre-release and build metadata are available as extensions to the MAJOR.MINOR.PATCH format.

V 1.1.0

Version information.

Maintenance

• Updated nugets to the latest.

Features

• Added protocol version information when the health is OK.

Bug Fixes

None.

V1.0.0

First version

Maintenance

None.

Features

• Support for MQTT unmanaged client
• Support for MQTT managed client

Bug Fixes

None.

License/Copyright

This project is distributed under the Apache license version 2.0 (see the LICENSE file in the project root).

By submitting a pull request to this project, you agree to license your contribution under the Apache license version 2.0 to this project.