vendor/github.com/lestrrat-go/file-rotatelogs/example_test.go

   1 package rotatelogs_test
   2
   3 import (
   4         "fmt"
   5         "io/ioutil"
   6         "os"
   7         rotatelogs "github.com/lestrrat-go/file-rotatelogs"
   8 )
   9
  10 func ExampleForceNewFile () {
  11         logDir, err := ioutil.TempDir("", "rotatelogs_test")
  12         if err != nil {
  13                 fmt.Println("could not create log directory ", err)
  14                 return
  15         }
  16         logPath := fmt.Sprintf("%s/test.log", logDir)
  17
  18         for i := 0; i < 2; i++ {
  19                 writer, err := rotatelogs.New(logPath,
  20                         rotatelogs.ForceNewFile(),
  21                 )
  22                 if err != nil {
  23                         fmt.Println("Could not open log file ", err)
  24                         return
  25                 }
  26
  27                 n, err := writer.Write([]byte("test"))
  28                 if err != nil || n != 4 {
  29                         fmt.Println("Write failed ", err, " number written ", n)
  30                         return
  31                 }
  32                 err = writer.Close()
  33                 if err != nil {
  34                         fmt.Println("Close failed ", err)
  35                         return
  36                 }
  37         }
  38
  39         files, err := ioutil.ReadDir(logDir)
  40         if err != nil {
  41                 fmt.Println("ReadDir failed ", err)
  42                 return
  43         }
  44         for _, file := range files {
  45                 fmt.Println(file.Name(), file.Size())
  46         }
  47
  48         err = os.RemoveAll(logDir)
  49         if err != nil {
  50                 fmt.Println("RemoveAll failed ", err)
  51                 return
  52         }
  53         // OUTPUT:
  54         // test.log 4
  55         // test.log.1 4
  56 }