Enabled TOS 2 for MQTT to ensure higher quality

[cedricve]

Description

Pull Request Description

Title: Enabled TOS 2 for MQTT to Ensure Higher Quality

Motivation and Improvement

This pull request focuses on enhancing the quality and reliability of our MQTT communication by enabling Quality of Service (QoS) level 2. QoS 2 ensures that messages are delivered exactly once, which is critical for applications where duplicate messages can cause issues or where message loss is unacceptable.

Changes Made

1. Updated MQTT Publish QoS Level:

   • Changed the QoS level from 0 (at most once) to 2 (exactly once) for all MQTT publish operations.
   • This change was applied across multiple files and functions, ensuring consistent and reliable message delivery.

   Example changes:

   - mqttClient.Publish("kerberos/hub/"+hubKey, 0, false, payload)
   + mqttClient.Publish("kerberos/hub/"+hubKey, 2, false, payload)

2. Files Modified:

   • machinery/src/cloud/Cloud.go
   • machinery/src/computervision/main.go
   • machinery/src/routers/mqtt/main.go

Benefits

1. Improved Reliability:

   • Ensures that each message is delivered exactly once, preventing potential issues caused by message duplication or loss.
   • Particularly important in scenarios where precise and reliable communication is critical.

2. Enhanced Quality:

   • Aligns with best practices for MQTT communication, providing a more robust and fault-tolerant system.
   • Reduces the risk of data inconsistency and enhances overall system stability.

By enabling QoS 2 for MQTT, we significantly improve the communication reliability and quality of our system, ensuring that messages are delivered exactly once, which is crucial for maintaining data integrity and system performance.