[greengrass] an API that can get the progress of component installation

yes, our team wants users to know the progress of the update on the app, Please let me know if you have any suggestions or progress thanks

Feel free to create a feature request for https://github.com/aws-greengrass/aws-greengrass-nucleus detailing your ask for a local IPC API to get the information you desire. You can then write your own component to obtain such information, process it and send to AWS IoT Core where it can then be relayed to the mobile app. At the time being the closest you can get is to write a component that watches and parses the /greengrass/v2/logs/greengrass.log. Enable DEBUG logging on the Nucleus in order to get additional information in the logs, such as the amount of bytes downloaded, but be aware that this will increase the storage needs on the device..

For example a line in the log providing information about the progress of the download (see range=bytes)

2022-08-24T07:31:30.499Z [DEBUG] (pool-2-thread-78) com.aws.greengrass.componentmanager.builtins.S3Downloader: Getting s3 object request. {bucket=<redacted>, s3-key=test.example.com/1.0.0/gateway.js, range=bytes=0-1474, componentIdentifier=test.example.com, artifactUri=<redacted>}