Firmware Deployment Service – Basics¶
The Firmware Deployment Service uses the Deployment Workflow Service to instantiate the software installation workflow. This sets up a state machine to track the installation progress and requires the device to send status messages while executing the firmware installation task. The history of the task status is recorded by the Firmware Deployment Service.
Required Device Messages¶
For proper progress tracking, it is necessary, that the device sends status messages to the backend. It should send messages in the following cases:
- It has started a task. This triggers the state machine to transition to
ACTIVATING. It may send status updates about the progress of the specific task.
- It has finished a task. This triggers the state machine to transition to
- A task has failed. This triggers the state machine to transition to
- A task has been canceled, e.g. due to a timeout. This triggers the state machine to transition to
CANCELED. Do not trigger this transition, if an error occurred, as the backend might unnecessarily retry the operation in this case.
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Last update: April 25, 2019