package jsonfilelog import ( "bytes" "encoding/json" "io/ioutil" "os" "path/filepath" "reflect" "strconv" "testing" "time" "github.com/docker/docker/daemon/logger" "github.com/docker/docker/daemon/logger/jsonfilelog/jsonlog" "github.com/gotestyourself/gotestyourself/fs" "github.com/stretchr/testify/require" ) func TestJSONFileLogger(t *testing.T) { cid := "a7317399f3f857173c6179d44823594f8294678dea9999662e5c625b5a1c7657" tmp, err := ioutil.TempDir("", "docker-logger-") if err != nil { t.Fatal(err) } defer os.RemoveAll(tmp) filename := filepath.Join(tmp, "container.log") l, err := New(logger.Info{ ContainerID: cid, LogPath: filename, }) if err != nil { t.Fatal(err) } defer l.Close() if err := l.Log(&logger.Message{Line: []byte("line1"), Source: "src1"}); err != nil { t.Fatal(err) } if err := l.Log(&logger.Message{Line: []byte("line2"), Source: "src2"}); err != nil { t.Fatal(err) } if err := l.Log(&logger.Message{Line: []byte("line3"), Source: "src3"}); err != nil { t.Fatal(err) } res, err := ioutil.ReadFile(filename) if err != nil { t.Fatal(err) } expected := `{"log":"line1\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line2\n","stream":"src2","time":"0001-01-01T00:00:00Z"} {"log":"line3\n","stream":"src3","time":"0001-01-01T00:00:00Z"} ` if string(res) != expected { t.Fatalf("Wrong log content: %q, expected %q", res, expected) } } func BenchmarkJSONFileLoggerLog(b *testing.B) { tmp := fs.NewDir(b, "bench-jsonfilelog") defer tmp.Remove() jsonlogger, err := New(logger.Info{ ContainerID: "a7317399f3f857173c6179d44823594f8294678dea9999662e5c625b5a1c7657", LogPath: tmp.Join("container.log"), Config: map[string]string{ "labels": "first,second", }, ContainerLabels: map[string]string{ "first": "label_value", "second": "label_foo", }, }) require.NoError(b, err) defer jsonlogger.Close() msg := &logger.Message{ Line: []byte("Line that thinks that it is log line from docker\n"), Source: "stderr", Timestamp: time.Now().UTC(), } buf := bytes.NewBuffer(nil) require.NoError(b, marshalMessage(msg, jsonlogger.(*JSONFileLogger).extra, buf)) b.SetBytes(int64(buf.Len())) b.ResetTimer() for i := 0; i < b.N; i++ { if err := jsonlogger.Log(msg); err != nil { b.Fatal(err) } } } func TestJSONFileLoggerWithOpts(t *testing.T) { cid := "a7317399f3f857173c6179d44823594f8294678dea9999662e5c625b5a1c7657" tmp, err := ioutil.TempDir("", "docker-logger-") if err != nil { t.Fatal(err) } defer os.RemoveAll(tmp) filename := filepath.Join(tmp, "container.log") config := map[string]string{"max-file": "2", "max-size": "1k"} l, err := New(logger.Info{ ContainerID: cid, LogPath: filename, Config: config, }) if err != nil { t.Fatal(err) } defer l.Close() for i := 0; i < 20; i++ { if err := l.Log(&logger.Message{Line: []byte("line" + strconv.Itoa(i)), Source: "src1"}); err != nil { t.Fatal(err) } } res, err := ioutil.ReadFile(filename) if err != nil { t.Fatal(err) } penUlt, err := ioutil.ReadFile(filename + ".1") if err != nil { t.Fatal(err) } expectedPenultimate := `{"log":"line0\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line1\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line2\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line3\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line4\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line5\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line6\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line7\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line8\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line9\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line10\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line11\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line12\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line13\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line14\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line15\n","stream":"src1","time":"0001-01-01T00:00:00Z"} ` expected := `{"log":"line16\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line17\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line18\n","stream":"src1","time":"0001-01-01T00:00:00Z"} {"log":"line19\n","stream":"src1","time":"0001-01-01T00:00:00Z"} ` if string(res) != expected { t.Fatalf("Wrong log content: %q, expected %q", res, expected) } if string(penUlt) != expectedPenultimate { t.Fatalf("Wrong log content: %q, expected %q", penUlt, expectedPenultimate) } } func TestJSONFileLoggerWithLabelsEnv(t *testing.T) { cid := "a7317399f3f857173c6179d44823594f8294678dea9999662e5c625b5a1c7657" tmp, err := ioutil.TempDir("", "docker-logger-") if err != nil { t.Fatal(err) } defer os.RemoveAll(tmp) filename := filepath.Join(tmp, "container.log") config := map[string]string{"labels": "rack,dc", "env": "environ,debug,ssl", "env-regex": "^dc"} l, err := New(logger.Info{ ContainerID: cid, LogPath: filename, Config: config, ContainerLabels: map[string]string{"rack": "101", "dc": "lhr"}, ContainerEnv: []string{"environ=production", "debug=false", "port=10001", "ssl=true", "dc_region=west"}, }) if err != nil { t.Fatal(err) } defer l.Close() if err := l.Log(&logger.Message{Line: []byte("line"), Source: "src1"}); err != nil { t.Fatal(err) } res, err := ioutil.ReadFile(filename) if err != nil { t.Fatal(err) } var jsonLog jsonlog.JSONLogs if err := json.Unmarshal(res, &jsonLog); err != nil { t.Fatal(err) } extra := make(map[string]string) if err := json.Unmarshal(jsonLog.RawAttrs, &extra); err != nil { t.Fatal(err) } expected := map[string]string{ "rack": "101", "dc": "lhr", "environ": "production", "debug": "false", "ssl": "true", "dc_region": "west", } if !reflect.DeepEqual(extra, expected) { t.Fatalf("Wrong log attrs: %q, expected %q", extra, expected) } }