Logfile consolidation (in memory sort)

logconsolidator.go

package main

import (
	"bufio"
	"fmt"
	"log"
	"os"
	"path/filepath"
	"sort"
	"time"
)

func trace(s string) (string, time.Time) {
	log.Println("START:", s)
	return s, time.Now()
}

func un(s string, startTime time.Time) {
	endTime := time.Now()
	log.Println("  END:", s, "ElapsedTime in seconds:", endTime.Sub(startTime))
}

type ByLength []string

func (s ByLength) Len() int {
	return len(s)
}
func (s ByLength) Swap(i, j int) {
	s[i], s[j] = s[j], s[i]
}
func (s ByLength) Less(i, j int) bool {
	return s[i][28:] < s[j][28:]
}

var arr []string

func main() {

	defer un(trace("logconsolidator."))

	arr = make([]string, 0)
	files, _ := filepath.Glob("*.log")
	for _, filename := range files {

		inFile, _ := os.Open(filename)
		defer inFile.Close()

		scanner := bufio.NewScanner(inFile)
		scanner.Split(bufio.ScanLines)

		for scanner.Scan() {
			line := scanner.Text()
			arr = append(arr, filename+line)
		}
	}
	sort.Sort(ByLength(arr))

	for _, v := range arr {
		fmt.Println(v)
	}
}