add file and line number in output when report caller is enabled

formatter.go

@@ -10,6 +10,7 @@ const (
 	FieldKeyTime           = "time"
 	FieldKeyLogrusError    = "logrus_error"
 	FieldKeyFunc           = "func"
+	FieldKeyFile           = "file"
 )
 
 // The Formatter interface is used to implement a custom Formatter. It takes an
@@ -69,5 +70,9 @@ func prefixFieldClashes(data Fields, fieldMap FieldMap, reportCaller bool) {
 		if l, ok := data[funcKey]; ok {
 			data["fields."+funcKey] = l
 		}
+		fileKey := fieldMap.resolve(FieldKeyFile)
+		if l, ok := data[fileKey]; ok {
+			data["fields."+fileKey] = l
+		}
 	}
 }

json_formatter.go

@@ -83,6 +83,7 @@ func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
 	data[f.FieldMap.resolve(FieldKeyLevel)] = entry.Level.String()
 	if entry.HasCaller() {
 		data[f.FieldMap.resolve(FieldKeyFunc)] = entry.Caller.Function
+		data[f.FieldMap.resolve(FieldKeyFile)] = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
 	}
 
 	var b *bytes.Buffer

logrus_test.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"io/ioutil"
+	"os"
 	"sync"
 	"testing"
 	"time"
@@ -339,11 +340,14 @@ func TestNestedLoggingReportsCorrectCaller(t *testing.T) {
 
 	err := json.Unmarshal(buffer.Bytes(), &fields)
 	require.NoError(t, err, "should have decoded first message")
-	assert.Equal(t, len(fields), 5, "should have msg/time/level/func/context fields")
+	assert.Equal(t, 6, len(fields), "should have msg/time/level/func/context fields")
 	assert.Equal(t, "looks delicious", fields["msg"])
 	assert.Equal(t, "eating raw fish", fields["context"])
 	assert.Equal(t,
 		"github.com/sirupsen/logrus_test.TestNestedLoggingReportsCorrectCaller", fields["func"])
+	cwd, err := os.Getwd()
+	require.NoError(t, err)
+	assert.Equal(t, cwd+"/logrus_test.go:339", fields["file"])
 
 	buffer.Reset()
 
@@ -361,7 +365,7 @@ func TestNestedLoggingReportsCorrectCaller(t *testing.T) {
 
 	err = json.Unmarshal(buffer.Bytes(), &fields)
 	assert.NoError(t, err, "should have decoded second message")
-	assert.Equal(t, 10, len(fields), "should have all builtin fields plus foo,bar,baz,...")
+	assert.Equal(t, 11, len(fields), "should have all builtin fields plus foo,bar,baz,...")
 	assert.Equal(t, "Stubblefield", fields["Clyde"])
 	assert.Equal(t, "Starks", fields["Jab'o"])
 	assert.Equal(t, "https://www.youtube.com/watch?v=V5DTznu-9v0", fields["uri"])
@@ -371,6 +375,8 @@ func TestNestedLoggingReportsCorrectCaller(t *testing.T) {
 	assert.Nil(t, fields["fields.msg"], "should not have prefixed previous `msg` entry")
 	assert.Equal(t,
 		"github.com/sirupsen/logrus_test.TestNestedLoggingReportsCorrectCaller", fields["func"])
+	require.NoError(t, err)
+	assert.Equal(t, cwd+"/logrus_test.go:364", fields["file"])
 
 	logger.ReportCaller = false // return to default value
 }

text_formatter.go

@@ -126,7 +126,8 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 		fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyLogrusError))
 	}
 	if entry.HasCaller() {
-		fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyFunc))
+		fixedKeys = append(fixedKeys,
+			f.FieldMap.resolve(FieldKeyFunc), f.FieldMap.resolve(FieldKeyFile))
 	}
 
 	if !f.DisableSorting {
@@ -172,6 +173,10 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 				value = entry.Message
 			case f.FieldMap.resolve(FieldKeyLogrusError):
 				value = entry.err
+			case f.FieldMap.resolve(FieldKeyFunc):
+				value = entry.Caller.Function
+			case f.FieldMap.resolve(FieldKeyFile):
+				value = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
 			default:
 				value = entry.Data[key]
 			}
@@ -208,7 +213,8 @@ func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []strin
 	caller := ""
 
 	if entry.HasCaller() {
-		caller = fmt.Sprintf(" %s()", entry.Caller.Function)
+		caller = fmt.Sprintf("%s:%d %s()",
+			entry.Caller.File, entry.Caller.Line, entry.Caller.Function)
 	}
 
 	if f.DisableTimestamp {