func enablePre()

in main/cmds.go [126:148]

• 18 lines of code
• 6 McCabe index (conditional complexity)

func enablePre(ctx *log.Context, hEnv HandlerEnvironment, seqNum int) error {
	// exit if this sequence number (a snapshot of the configuration) is already
	// processed. if not, save this sequence number before proceeding.
	if shouldExit, err := checkAndSaveSeqNum(ctx, seqNum, mostRecentSequence); err != nil {
		return errors.Wrap(err, "failed to process seqnum")
	} else if shouldExit {
		ctx.Log("event", "exit", "message", "this script configuration is already processed, will not run again")
		if IsExtensionStillRunning(pidFilePath) {
			ctx.Log("event", "check status", "message", "Previous runcommand process is still running")
		} else {
			statusType, err := readStatus(ctx, hEnv, seqNum)
			if err == nil && statusType == StatusTransitioning {
				// Make sure status is not stuck in transitioning state when previous extension process is not running
				// If VM was restarted or process didn't finish its possible that seqNum ihas been marked as processed
				// but last status file is still is "transitioning"
				ctx.Log("event", "check status", "message", "transitioning status detected but no process to handle it - set to success status")
				reportStatus(ctx, hEnv, seqNum, StatusSuccess, cmd{enable, "Enable", true, enablePre, 3}, "Last script execution didn't finish.")
			}
		}
		os.Exit(0)
	}
	return nil
}