93 lines
2.0 KiB
Go
93 lines
2.0 KiB
Go
package logger
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import (
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"strings"
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"sync"
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"time"
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"douyu_go/internal/constants"
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"douyu_go/internal/types"
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)
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// MemoryLogStore 内存日志缓冲，实现 io.Writer 接口。
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type MemoryLogStore struct {
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mu sync.RWMutex
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nextID int64
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max int
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filePath string
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entries []types.LogEntry
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}
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// NewMemoryLogStore 创建内存日志缓冲，最多保留 max 条最新日志。
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func NewMemoryLogStore(max int) *MemoryLogStore {
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if max <= 0 {
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max = 500
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}
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return &MemoryLogStore{
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max: max,
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entries: make([]types.LogEntry, 0, max),
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}
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}
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// Write 实现 io.Writer，把标准 log 输出转存为内存日志。
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func (s *MemoryLogStore) Write(p []byte) (int, error) {
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text := strings.TrimRight(string(p), "\r\n")
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if text == "" {
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return len(p), nil
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}
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s.mu.Lock()
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defer s.mu.Unlock()
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for _, line := range strings.Split(text, "\n") {
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line = strings.TrimRight(line, "\r")
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if strings.TrimSpace(line) == "" {
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continue
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}
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category, level := ParseLogMeta(line)
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if level == "" {
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level = DetectLogLevel(line)
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}
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s.nextID++
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s.entries = append(s.entries, types.LogEntry{
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ID: s.nextID,
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Time: time.Now().In(constants.CST).Format("2006-01-02 15:04:05.000"),
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Level: level,
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Category: category,
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Message: line,
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})
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if len(s.entries) > s.max {
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copy(s.entries, s.entries[len(s.entries)-s.max:])
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s.entries = s.entries[:s.max]
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}
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}
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return len(p), nil
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}
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// SetFilePath 保存当前日志文件路径。
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func (s *MemoryLogStore) SetFilePath(path string) {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.filePath = path
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}
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// Since 返回 ID 大于 since 的日志。
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func (s *MemoryLogStore) Since(since int64) []types.LogEntry {
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s.mu.RLock()
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defer s.mu.RUnlock()
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out := make([]types.LogEntry, 0, len(s.entries))
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for _, entry := range s.entries {
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if entry.ID > since {
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out = append(out, entry)
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}
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}
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return out
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}
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// FilePath 返回当前日志文件路径。
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func (s *MemoryLogStore) FilePath() string {
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s.mu.RLock()
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defer s.mu.RUnlock()
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return s.filePath
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}
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