80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package lifecycle
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import (
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"fmt"
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"log/slog"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/ollama/ollama/envconfig"
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)
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func InitLogging() {
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level := slog.LevelInfo
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if envconfig.Debug() {
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level = slog.LevelDebug
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}
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var logFile *os.File
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var err error
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// Detect if we're a GUI app on windows, and if not, send logs to console
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if os.Stderr.Fd() != 0 {
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// Console app detected
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logFile = os.Stderr
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// TODO - write one-line to the app.log file saying we're running in console mode to help avoid confusion
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} else {
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rotateLogs(AppLogFile)
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logFile, err = os.OpenFile(AppLogFile, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0o755)
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if err != nil {
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slog.Error(fmt.Sprintf("failed to create server log %v", err))
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return
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}
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}
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handler := slog.NewTextHandler(logFile, &slog.HandlerOptions{
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Level: level,
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AddSource: true,
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ReplaceAttr: func(_ []string, attr slog.Attr) slog.Attr {
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if attr.Key == slog.SourceKey {
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source := attr.Value.Any().(*slog.Source)
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source.File = filepath.Base(source.File)
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}
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return attr
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},
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})
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slog.SetDefault(slog.New(handler))
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slog.Info("ollama app started")
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}
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func rotateLogs(logFile string) {
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if _, err := os.Stat(logFile); os.IsNotExist(err) {
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return
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}
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index := strings.LastIndex(logFile, ".")
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pre := logFile[:index]
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post := "." + logFile[index+1:]
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for i := LogRotationCount; i > 0; i-- {
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older := pre + "-" + strconv.Itoa(i) + post
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newer := pre + "-" + strconv.Itoa(i-1) + post
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if i == 1 {
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newer = pre + post
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}
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if _, err := os.Stat(newer); err == nil {
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if _, err := os.Stat(older); err == nil {
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err := os.Remove(older)
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if err != nil {
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slog.Warn("Failed to remove older log", "older", older, "error", err)
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continue
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}
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}
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err := os.Rename(newer, older)
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if err != nil {
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slog.Warn("Failed to rotate log", "older", older, "newer", newer, "error", err)
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}
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}
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}
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}
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