fix: Show in-progress spinner when creating VM

[hariohmprasath]

Issue: #157

Signed-off-by: Hari Ohm Prasth Rajagopal harrajag@amazon.com

Issue #, if available:
#157

Description of changes:
Show spinner when VM creation is in progress

Testing done:
Ran local tests by building the code using make command and tested it by creating a new VM finch vm init command

INFO[0000] Initializing and starting Finch virtual machine...
⣾VM creation in progress

• I've reviewed the guidance in CONTRIBUTING.md

License Acceptance

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[davidhsingyuchen]

Thanks for the PR! I think we can merge it as it's definitely an improvement, but I'm not 100% sure if #157 can be closed by it as strictly speaking, we're not showing the "progress" (i.e., 30%, 50%, etc.). @ningziwen WDYT?

LGTM overall, just please fix the failed checks. You can ignore the e2e ones as those failures are likely caused by flakiness and are tracked in #140.

[otterley]

You've got this twice - consider using a defer s.Stop() instead after s.Start()

[hariohmprasath]

Thanks, updated the code.

[davidhsingyuchen]

Currently the logs are printed before the spinner stops, while we may want them to be printed after instead.

	if err != nil {
		iva.logger.Errorf("Finch virtual machine failed to start, debug logs: %s", logs)
		return err
	}
	iva.logger.Info("Finch virtual machine started successfully")

As a result, could you wrap the following statements in a func (initVM?) and print the logs above after calling that func? Thanks!

	instanceName := fmt.Sprintf("--name=%v", limaInstanceName)
	limaCmd := iva.creator.CreateWithoutStdio("start", instanceName, iva.baseYamlFilePath, "--tty=false")
	iva.logger.Info("Initializing and starting Finch virtual machine...")
	// Show spinner
	s := spinner.New(spinner.CharSets[11], 100*time.Millisecond)
	s.Suffix = "VM creation in progress"
	s.Start()
	defer s.Stop()
	logs, err := limaCmd.CombinedOutput()

[hariohmprasath]

WDYT

Thanks @davidhsingyuchen, I have taken care of the comments.

Regarding the progress: I looked into this code and seems like lima doesn't provide any async updates on the VM creation process. One option is to pipe the stdout from the creation progress to notify user that something is happening, but not sure whether thats the right thing to do. If you have any ideas let me know, happy to work on another PR. Thanks

[davidhsingyuchen]

Regarding the progress: I looked into this code and seems like lima doesn't provide any async updates on the VM creation process. One option is to pipe the stdout from the creation progress to notify user that something is happening, but not sure whether thats the right thing to do. If you have any ideas let me know, happy to work on another PR. Thanks

@hariohmprasath Thanks for the investigation. I think the current form is good enough. We may not want to pipe the stdout from the creation progress as we cannot really control what's being printed out there, and it's sort of implementation details. /cc @ningziwen