60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
package services
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import (
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"Quincy_admin/repositories"
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"Quincy_admin/schemas"
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"bufio"
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"log"
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"os"
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"strings"
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)
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type CommonService struct {
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repo *repositories.CommonRepository
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}
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func NewCommonService(repo *repositories.CommonRepository) *CommonService {
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return &CommonService{repo: repo}
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}
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// GetLoginLogList 获取登录日志列表
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func (s *CommonService) GetLoginLogList(req *schemas.LoginLogListRequest) ([]*schemas.LoginLog, int64, error) {
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return s.repo.GetLoginLogList(req)
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}
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// ReadLastLines 读取文件最后几行
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func (s *CommonService) ReadLastLines(filepath string, lines int) (string, error) {
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file, err := os.Open(filepath)
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if err != nil {
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return "", err
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}
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defer func(file *os.File) {
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err := file.Close()
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if err != nil {
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log.Println("Error closing file:", err)
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}
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}(file)
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// 使用Scanner按行读取
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scanner := bufio.NewScanner(file)
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var allLines []string
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for scanner.Scan() {
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allLines = append(allLines, scanner.Text())
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}
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if err := scanner.Err(); err != nil {
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return "", err
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}
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// 获取最后几行
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totalLines := len(allLines)
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start := totalLines - lines
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if start < 0 {
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start = 0
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}
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result := allLines[start:]
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return strings.Join(result, "\n"), nil
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}
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