bwilliams
dcb714dc19
- logging: LogToFile shadowed the package-level fileLogger, so IsFileLogger was always false and Shutdown never closed the file - logging: replace IsJSONHandler's unsafe reflection into slog internals with a *slog.JSONHandler type check - cli: fail if the log file can't be opened instead of silently logging to the terminal; return the log shutdown error from Finish - build.sh: -X flags used the wrong module path, so the version, build time and commit were never stamped
82 lines
1.5 KiB
Go
82 lines
1.5 KiB
Go
package logging
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import (
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"log/slog"
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"os"
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"github.com/lmittmann/tint"
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)
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// ---------- Standard log handling (terminal or file based) ----------
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var logLevel slog.LevelVar
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var fileLogger *os.File
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// Set the logging to a particular level, quietly
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func SetLevel(level slog.Level) {
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logLevel.Set(level)
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}
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// Enable debug level logging
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func EnableDebug() {
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if logLevel.Level() > slog.LevelDebug {
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logLevel.Set(slog.LevelDebug)
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slog.Debug("Debug logging enabled")
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}
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}
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func LogToFile(logfile string) error {
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if fileLogger != nil {
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(*fileLogger).Close()
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}
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// Open the log file
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var err error
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fileLogger, err = os.OpenFile(logfile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0o600)
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if err != nil {
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return err
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}
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opts := &slog.HandlerOptions{
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Level: &logLevel,
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}
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handler := slog.NewJSONHandler(fileLogger, opts)
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logger := slog.New(handler)
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slog.SetDefault(logger)
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return nil
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}
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func Shutdown() error {
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var err error = nil
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if fileLogger != nil {
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err = (*fileLogger).Close()
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fileLogger = nil
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}
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return err
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}
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func LogToTerminal() {
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opts := &tint.Options{
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Level: &logLevel,
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TimeFormat: "*",
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}
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handler := tint.NewTextHandler(os.Stdout, opts)
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logger := slog.New(handler)
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slog.SetDefault(logger)
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}
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// IsJSONHandler reports whether h writes JSON, as the file logger does.
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func IsJSONHandler(h slog.Handler) bool {
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_, ok := h.(*slog.JSONHandler)
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return ok
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}
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func IsFileLogger() bool {
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return fileLogger != nil
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}
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func IsDebugEnabled() bool {
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return logLevel.Level() <= slog.LevelDebug
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}
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