func parseInputValues() {
	awsRegion = defaultAWSRegion
	if len(awsRegionEnv) != 0 {
		awsRegion = awsRegionEnv
		log.Infoln("Parsed AWS_REGION:", awsRegion)
	}
	if len(expectedLambdaCountEnv) != 0 {
		count, err := strconv.Atoi(expectedLambdaCountEnv)
		if err != nil {
			log.Fatalln("error occurred attempting to parse LAMBDA_COUNT:", err)
		}
		expectedLambdaCount = count
		log.Infoln("Parsed LAMBDA_COUNT:", expectedLambdaCount)
	}
}
parseInputValues parses incoming input values (environment variables).
package main
import (
	"os"
	"strconv"
	log "github.com/sirupsen/logrus"
)
func parseDebugSettings() {
	if len(debugEnv) != 0 {
		var err error
		debug, err = strconv.ParseBool(debugEnv)
		if err != nil {
			log.Fatalln("failed to parse DEBUG environment variable:", err)
		}
	}
	if debug {
		log.Infoln("Debug logging enabled.")
		log.SetLevel(log.DebugLevel)
	}
	log.Debugln(os.Args)
}