1.2.0 can't download in environments that don't have external services available

[doughsay]

The download task fails if the Elixir application can't fully start when using ua_inspector 1.2.0.

If the Elixir application depends on external services to boot (for example a postgres database), and the database is not reachable, then the download task fails.

This appears to be a new requirement in 1.2.0, as in 1.1.0 this didn't happen.

This breaks my build process because it involves building docker images. The docker image runs mix ua_inspector.download during build, but allows no external connections, therefore the application fails to boot and the build fails.

[mneudert]

Can you try if running the download without the mix task fixes your problem?

mix run --no-start -e "UAInspector.Downloader.download()"

Depending on your configuration this should work without starting any applications. Until there is a fix to have a configuration of "applications required for the mix task to work" in place instead of just starting everything.

[mneudert]

I think I have a fix that does not require any configuration changes but this time it should get some proper verification before breaking other things: https://github.com/elixir-inspector/ua_inspector/tree/v1.2

This should only try to load the code required for the initializer modules without starting the complete application. Can you verify this is the case?

/ping @smaximov it would be great if you could also test this as it might affect you and I do no longer trust my simple local test app for this stuff :)

[smaximov]

@mneudert, 9ac280b works for me.

[doughsay]

@mneudert thanks for jumping on this so quickly!

Unfortunately, 9ac280b still starts my entire umbrella application.

On the other hand, manually running the download function does work for me for now. I will change my dockerfile build script to use that for now.

Thanks!

[mneudert]

Closing as this should be no issue anymore since release v2.0.0. I just missed mentioning it outside of the Changelog 😅