154 lines
4.0 KiB
Go
154 lines
4.0 KiB
Go
package logger
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import (
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"bytes"
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"io"
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"io/ioutil"
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"log"
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"os"
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"path/filepath"
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"testing"
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"github.com/influxdata/telegraf/internal"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestWriteLogToFile(t *testing.T) {
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tmpfile, err := ioutil.TempFile("", "")
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assert.NoError(t, err)
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defer func() { os.Remove(tmpfile.Name()) }()
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config := createBasicLogConfig(tmpfile.Name())
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SetupLogging(config)
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log.Printf("I! TEST")
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log.Printf("D! TEST") // <- should be ignored
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f, err := ioutil.ReadFile(tmpfile.Name())
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assert.NoError(t, err)
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assert.Equal(t, f[19:], []byte("Z I! TEST\n"))
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}
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func TestDebugWriteLogToFile(t *testing.T) {
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tmpfile, err := ioutil.TempFile("", "")
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assert.NoError(t, err)
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defer func() { os.Remove(tmpfile.Name()) }()
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config := createBasicLogConfig(tmpfile.Name())
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config.Debug = true
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SetupLogging(config)
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log.Printf("D! TEST")
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f, err := ioutil.ReadFile(tmpfile.Name())
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assert.NoError(t, err)
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assert.Equal(t, f[19:], []byte("Z D! TEST\n"))
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}
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func TestErrorWriteLogToFile(t *testing.T) {
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tmpfile, err := ioutil.TempFile("", "")
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assert.NoError(t, err)
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defer func() { os.Remove(tmpfile.Name()) }()
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config := createBasicLogConfig(tmpfile.Name())
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config.Quiet = true
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SetupLogging(config)
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log.Printf("E! TEST")
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log.Printf("I! TEST") // <- should be ignored
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f, err := ioutil.ReadFile(tmpfile.Name())
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assert.NoError(t, err)
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assert.Equal(t, f[19:], []byte("Z E! TEST\n"))
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}
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func TestAddDefaultLogLevel(t *testing.T) {
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tmpfile, err := ioutil.TempFile("", "")
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assert.NoError(t, err)
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defer func() { os.Remove(tmpfile.Name()) }()
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config := createBasicLogConfig(tmpfile.Name())
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config.Debug = true
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SetupLogging(config)
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log.Printf("TEST")
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f, err := ioutil.ReadFile(tmpfile.Name())
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assert.NoError(t, err)
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assert.Equal(t, f[19:], []byte("Z I! TEST\n"))
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}
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func TestWriteToTruncatedFile(t *testing.T) {
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tmpfile, err := ioutil.TempFile("", "")
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assert.NoError(t, err)
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defer func() { os.Remove(tmpfile.Name()) }()
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config := createBasicLogConfig(tmpfile.Name())
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config.Debug = true
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SetupLogging(config)
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log.Printf("TEST")
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f, err := ioutil.ReadFile(tmpfile.Name())
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assert.NoError(t, err)
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assert.Equal(t, f[19:], []byte("Z I! TEST\n"))
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tmpf, err := os.OpenFile(tmpfile.Name(), os.O_RDWR|os.O_TRUNC, 0644)
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assert.NoError(t, err)
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assert.NoError(t, tmpf.Close())
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log.Printf("SHOULD BE FIRST")
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f, err = ioutil.ReadFile(tmpfile.Name())
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assert.NoError(t, err)
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assert.Equal(t, f[19:], []byte("Z I! SHOULD BE FIRST\n"))
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}
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func TestWriteToFileInRotation(t *testing.T) {
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tempDir, err := ioutil.TempDir("", "LogRotation")
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require.NoError(t, err)
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config := createBasicLogConfig(filepath.Join(tempDir, "test.log"))
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config.LogTarget = LogTargetFile
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config.RotationMaxSize = internal.Size{Size: int64(30)}
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writer := newLogWriter(config)
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// Close the writer here, otherwise the temp folder cannot be deleted because the current log file is in use.
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closer, isCloser := writer.(io.Closer)
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assert.True(t, isCloser)
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defer func() { closer.Close(); os.RemoveAll(tempDir) }()
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log.Printf("I! TEST 1") // Writes 31 bytes, will rotate
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log.Printf("I! TEST") // Writes 29 byes, no rotation expected
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files, _ := ioutil.ReadDir(tempDir)
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assert.Equal(t, 2, len(files))
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}
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func TestLogTargetSettings(t *testing.T) {
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config := LogConfig{
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LogTarget: "",
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Quiet: true,
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}
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SetupLogging(config)
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logger, isTelegrafLogger := actualLogger.(*telegrafLog)
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assert.True(t, isTelegrafLogger)
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assert.Equal(t, logger.internalWriter, os.Stderr)
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config = LogConfig{
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LogTarget: "stderr",
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Quiet: true,
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}
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SetupLogging(config)
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logger, isTelegrafLogger = actualLogger.(*telegrafLog)
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assert.True(t, isTelegrafLogger)
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assert.Equal(t, logger.internalWriter, os.Stderr)
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}
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func BenchmarkTelegrafLogWrite(b *testing.B) {
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var msg = []byte("test")
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var buf bytes.Buffer
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w := newTelegrafWriter(&buf)
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for i := 0; i < b.N; i++ {
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buf.Reset()
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w.Write(msg)
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}
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}
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func createBasicLogConfig(filename string) LogConfig {
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return LogConfig{
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Logfile: filename,
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LogTarget: LogTargetFile,
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RotationMaxArchives: -1,
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}
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}
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