From 075817a8dd76c268886735b6c6ff420656b052bf Mon Sep 17 00:00:00 2001
From: kui <louyuexing@outlook.com>
Date: Tue, 27 Aug 2024 20:43:25 +0800
Subject: [PATCH]  Add custom log file name date format (#4333)

---
 core/logx/config.go       | 2 ++
 core/logx/logs.go         | 4 ++++
 core/logx/rotatelogger.go | 8 +++++---
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/core/logx/config.go b/core/logx/config.go
index a86e4d74..8e6eb7f8 100644
--- a/core/logx/config.go
+++ b/core/logx/config.go
@@ -42,4 +42,6 @@ type LogConf struct {
 	// daily: daily rotation.
 	// size: size limited rotation.
 	Rotation string `json:",default=daily,options=[daily,size]"`
+	// FileTimeFormat represents the time format for file name, default is `2006-01-02T15:04:05.000Z07:00`.
+	FileTimeFormat string `json:",optional"`
 }
diff --git a/core/logx/logs.go b/core/logx/logs.go
index 627bab9b..2f84cd00 100644
--- a/core/logx/logs.go
+++ b/core/logx/logs.go
@@ -294,6 +294,10 @@ func SetUp(c LogConf) (err error) {
 			timeFormat = c.TimeFormat
 		}
 
+		if len(c.FileTimeFormat) > 0 {
+			fileTimeFormat = c.FileTimeFormat
+		}
+
 		atomic.StoreUint32(&maxContentLength, c.MaxContentLength)
 
 		switch c.Encoding {
diff --git a/core/logx/rotatelogger.go b/core/logx/rotatelogger.go
index 61f9a9d0..58d837ae 100644
--- a/core/logx/rotatelogger.go
+++ b/core/logx/rotatelogger.go
@@ -19,7 +19,6 @@ import (
 
 const (
 	dateFormat      = "2006-01-02"
-	fileTimeFormat  = time.RFC3339
 	hoursPerDay     = 24
 	bufferSize      = 100
 	defaultDirMode  = 0o755
@@ -28,8 +27,11 @@ const (
 	megaBytes       = 1 << 20
 )
 
-// ErrLogFileClosed is an error that indicates the log file is already closed.
-var ErrLogFileClosed = errors.New("error: log file closed")
+var (
+	// ErrLogFileClosed is an error that indicates the log file is already closed.
+	ErrLogFileClosed = errors.New("error: log file closed")
+	fileTimeFormat   = time.RFC3339
+)
 
 type (
 	// A RotateRule interface is used to define the log rotating rules.