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logrotate.go
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logrotate.go
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package main
import (
"fmt"
"log"
"os"
"path/filepath"
"time"
"github.com/robfig/cron/v3"
)
var (
exeDir = getExecutablePath()
configPath = filepath.Join(exeDir, "configs", "wingologrotate.yaml")
logOutput = filepath.Join(exeDir, "logs", "wingologrotate.log")
)
func runLogRotation() {
setupLogging(logOutput)
defer closeLogFile()
config, err := loadConfig(configPath)
if err != nil {
log.Fatalf("Failed to load configuration: %v", err)
}
c := cron.New()
for _, logEntry := range config.Logs {
schedule := config.Schedule
task := createTask(logEntry)
_, err := c.AddFunc(schedule, task)
if err != nil {
log.Printf("Failed to schedule task for path %s: %v", logEntry.Path, err)
} else {
log.Printf("Scheduled task for path %s", logEntry.Path)
}
}
c.Start()
select {}
}
func createTask(logEntry LogEntry) func() {
return func() {
for _, path := range logEntry.Path {
log.Printf("Running task for path: %s", path)
matchingFiles, err := filepath.Glob(filepath.Clean(path))
if err != nil {
log.Printf("Failed to expand wildcard for path %s: %v", path, err)
return
}
switch logEntry.Type {
case "delete":
for _, file := range matchingFiles {
if logEntry.Condition != nil && logEntry.Condition.Age != nil {
ageDuration, err := parseDuration(*logEntry.Condition.Age)
if err != nil {
log.Printf("Invalid age format for file %s: %v", file, err)
continue
}
fileInfo, err := os.Stat(file)
if err != nil {
log.Printf("Failed to get file info for %s: %v", file, err)
continue
}
fileAge := time.Since(fileInfo.ModTime())
if fileAge < ageDuration {
continue
}
}
log.Printf("Deleting file: %s", file)
err := os.Remove(file)
if err != nil {
log.Printf("Failed to delete file %s: %v", file, err)
} else {
log.Printf("Successfully deleted file: %s", file)
}
}
case "rotate":
rotateLogFiles(logEntry)
default:
log.Printf("Unsupported task type: %s", logEntry.Type)
}
}
}
}
func rotateLogFiles(logEntry LogEntry) {
for _, path := range logEntry.Path {
log.Printf("Rotating logs for path: %s", path)
matchingFiles, err := filepath.Glob(filepath.Clean(path))
if err != nil {
log.Printf("Failed to expand wildcard for path %s: %v", path, err)
return
}
for _, file := range matchingFiles {
fileInfo, err := os.Stat(file)
if err != nil {
log.Printf("Failed to get file info for %s: %v", file, err)
continue
}
rotateDueToSize := false
if logEntry.Condition.Size != nil {
maxSize, err := parseSize(*logEntry.Condition.Size)
if err != nil {
log.Printf("Invalid size format for rotation: %v", err)
continue
}
if fileInfo.Size() >= maxSize {
rotateDueToSize = true
}
}
rotateDueToAge := false
if logEntry.Condition.Age != nil {
ageDuration, err := parseDuration(*logEntry.Condition.Age)
if err != nil {
log.Printf("Invalid age format for rotation: %v", err)
continue
}
fileAge := time.Since(fileInfo.ModTime())
if fileAge >= ageDuration {
rotateDueToAge = true
}
}
if rotateDueToSize || rotateDueToAge {
rotatedFilePath := fmt.Sprintf("%s.%s", file, time.Now().Format("20060102-150405"))
if err := os.Rename(file, rotatedFilePath); err != nil {
log.Printf("Failed to rotate log file %s: %v", file, err)
continue
}
log.Printf("Rotated log file: %s to %s", file, rotatedFilePath)
if logEntry.Condition.Compress == nil || *logEntry.Condition.Compress {
if err := compressLogFile(rotatedFilePath, "gzip"); err != nil { // todo read me from config
log.Printf("Failed to compress rotated log file %s: %v", rotatedFilePath, err)
} else {
log.Printf("Compressed log file: %s", rotatedFilePath)
}
}
if logEntry.Condition.MaxKeep != nil {
if err := removeOldLogFiles(filepath.Dir(file), filepath.Base(file), *logEntry.Condition.MaxKeep); err != nil {
log.Printf("Failed to remove old log files: %v", err)
}
}
}
}
}
}