traefik/integration/log_rotation_test.go

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// +build !windows
package integration
import (
"bufio"
"io/ioutil"
"net/http"
"os"
"syscall"
"time"
"github.com/containous/traefik/integration/try"
"github.com/go-check/check"
checker "github.com/vdemeester/shakers"
)
// Log rotation integration test suite
type LogRotationSuite struct{ BaseSuite }
func (s *LogRotationSuite) TestAccessLogRotation(c *check.C) {
// Start Traefik
cmd, display := s.traefikCmd(withConfigFile("fixtures/access_log_config.toml"))
defer display(c)
err := cmd.Start()
c.Assert(err, checker.IsNil)
defer cmd.Process.Kill()
defer os.Remove(traefikTestAccessLogFile)
defer os.Remove(traefikTestLogFile)
// Verify Traefik started ok
verifyEmptyErrorLog(c, "traefik.log")
// Start test servers
ts1 := startAccessLogServer(8081)
defer ts1.Close()
// Allow time to startup
time.Sleep(1 * time.Second)
// Make some requests
err = try.GetRequest("http://127.0.0.1:8000/test1", 500*time.Millisecond)
c.Assert(err, checker.IsNil)
// Rename access log
err = os.Rename(traefikTestAccessLogFile, traefikTestAccessLogFile+".rotated")
c.Assert(err, checker.IsNil)
// in the midst of the requests, issue SIGUSR1 signal to server process
err = cmd.Process.Signal(syscall.SIGUSR1)
c.Assert(err, checker.IsNil)
// continue issuing requests
_, err = http.Get("http://127.0.0.1:8000/test1")
c.Assert(err, checker.IsNil)
_, err = http.Get("http://127.0.0.1:8000/test1")
c.Assert(err, checker.IsNil)
// Verify access.log.rotated output as expected
lineCount := verifyLogLines(c, traefikTestAccessLogFile+".rotated", 0, true)
c.Assert(lineCount, checker.GreaterOrEqualThan, 1)
// Verify access.log output as expected
lineCount = verifyLogLines(c, traefikTestAccessLogFile, lineCount, true)
c.Assert(lineCount, checker.Equals, 3)
verifyEmptyErrorLog(c, traefikTestLogFile)
}
func (s *LogRotationSuite) TestTraefikLogRotation(c *check.C) {
// Start Traefik
cmd, display := s.traefikCmd(withConfigFile("fixtures/traefik_log_config.toml"))
defer display(c)
err := cmd.Start()
c.Assert(err, checker.IsNil)
defer cmd.Process.Kill()
defer os.Remove(traefikTestAccessLogFile)
defer os.Remove(traefikTestLogFile)
// Ensure Traefik has started
err = try.GetRequest("http://127.0.0.1:8000/test1", 500*time.Millisecond)
c.Assert(err, checker.IsNil)
// Rename traefik log
err = os.Rename(traefikTestLogFile, traefikTestLogFile+".rotated")
c.Assert(err, checker.IsNil)
// issue SIGUSR1 signal to server process
err = cmd.Process.Signal(syscall.SIGUSR1)
c.Assert(err, checker.IsNil)
err = cmd.Process.Signal(syscall.SIGTERM)
c.Assert(err, checker.IsNil)
// Allow time for switch to be processed
err = try.Do(3*time.Second, func() error {
_, err = os.Stat(traefikTestLogFile)
return err
})
c.Assert(err, checker.IsNil)
// we have at least 6 lines in traefik.log.rotated
lineCount := verifyLogLines(c, traefikTestLogFile+".rotated", 0, false)
// GreaterOrEqualThan used to ensure test doesn't break
// If more log entries are output on startup
c.Assert(lineCount, checker.GreaterOrEqualThan, 5)
//Verify traefik.log output as expected
lineCount = verifyLogLines(c, traefikTestLogFile, lineCount, false)
c.Assert(lineCount, checker.GreaterOrEqualThan, 7)
}
func verifyEmptyErrorLog(c *check.C, name string) {
err := try.Do(5*time.Second, func() error {
traefikLog, e2 := ioutil.ReadFile(name)
if e2 != nil {
return e2
}
c.Assert(traefikLog, checker.HasLen, 0)
return nil
})
c.Assert(err, checker.IsNil)
}
func verifyLogLines(c *check.C, fileName string, countInit int, accessLog bool) int {
rotated, err := os.Open(fileName)
c.Assert(err, checker.IsNil)
rotatedLog := bufio.NewScanner(rotated)
count := countInit
for rotatedLog.Scan() {
line := rotatedLog.Text()
c.Log(line)
if accessLog {
if len(line) > 0 {
CheckAccessLogFormat(c, line, count)
}
}
count++
}
return count
}