command.go

package k6exec

import (
	"context"
	"log/slog"
	"os/exec"
)

// Command returns the exec.Cmd struct to execute k6 with the given arguments.
// If the given subcommand has a script argument, it analyzes the dependencies
// in the script and provisions a k6 executable based on them.
// In Options, you can also specify environment variable and manifest file as dependency sources.
// The second return value is a cleanup function that is used to delete this temporary directory.
// TODO: as the cache is now handled by the k6provider library, consider removing the cleanup function
func Command(ctx context.Context, args []string, opts *Options) (*exec.Cmd, func() error, error) {
	deps, err := analyze(args, opts)
	if err != nil {
		return nil, nil, err
	}

	slog.Info("fetching k6 binary")

	exe, err := provision(ctx, deps, opts)
	if err != nil {
		return nil, nil, err
	}

	// FIXME: can we leak sensitive information in arguments here? (pablochacin)
	slog.Debug("running k6", "path", exe, "args", args)

	cmd := exec.CommandContext(ctx, exe, args...) //nolint:gosec

	// TODO: once k6provider implements the cleanup of binary return the proper cleanup function (pablochacin)
	return cmd, func() error { return nil }, nil
}