GH-3697: Various lifecycle fixed for MQTT v5 CAs #3698
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Fixes spring-projects#3697 SO: https://stackoverflow.com/questions/70374046/spring-integration-mqtt-failed-to-start-app-when-the-network-is-disconnected * Add `mqttClient.disconnect()` to `Mqttv5PahoMessageDrivenChannelAdapter.doStop()` - the `doStart()` does `connect()` * Add `Mqttv5PahoMessageDrivenChannelAdapter.destroy()` impl to close `mqttClient` * Fix `Mqttv5PahoMessageHandler.doStart()` to not re-throw an exception on connection. Emit an `MqttConnectionFailedEvent` and log error instead * Fix `Mqttv5PahoMessageHandler.destroy()` to call `mqttClient.close(true)` for better resources clean up * Improve MQTT v5 components Javadocs and add a reconnect note into `mqtt.adoc`
garyrussell
approved these changes
Dec 16, 2021
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Fixes #3697
SO: https://stackoverflow.com/questions/70374046/spring-integration-mqtt-failed-to-start-app-when-the-network-is-disconnected
mqttClient.disconnect()toMqttv5PahoMessageDrivenChannelAdapter.doStop()- thedoStart()doesconnect()Mqttv5PahoMessageDrivenChannelAdapter.destroy()impl to closemqttClientMqttv5PahoMessageHandler.doStart()to not re-throw an exception on connection.Emit an
MqttConnectionFailedEventand log error insteadMqttv5PahoMessageHandler.destroy()to callmqttClient.close(true)for better resources clean upmqtt.adoc