1 files changed, 77 insertions, 0 deletions
diff --git a/logging/logger.go b/logging/logger.go
new file mode 100644
index 0000000..9724c2f
--- /dev/null
+++ b/logging/logger.go
@@ -0,0 +1,77 @@
+package logging
+
+/*
+golang's `log` package sucks, so we wrap it.
+*/
+
+import (
+	"fmt"
+	"log"
+	"runtime"
+)
+
+type Logger struct {
+	delegate      *log.Logger
+	prefix        string
+	debugHeader   string
+	infoHeader    string
+	warningHeader string
+	errorHeader   string
+	fatalHeader   string
+}
+
+const (
+	kDebug   = "DEBUG"
+	kInfo    = "INFO"
+	kWarning = "WARNING"
+	kError   = "ERROR"
+	kFatal   = "FATAL"
+)
+
+func NewWrappedLogger(delegate *log.Logger, name string) Logger {
+	return Logger{
+		delegate:      delegate,
+		debugHeader:   fmt.Sprintf("[%v][%v]", name, kDebug),
+		infoHeader:    fmt.Sprintf("[%v][%v]", name, kInfo),
+		warningHeader: fmt.Sprintf("[%v][%v]", name, kWarning),
+		errorHeader:   fmt.Sprintf("[%v][%v]", name, kError),
+		fatalHeader:   fmt.Sprintf("[%v][%v]", name, kFatal),
+	}
+}
+
+func getCallerInfo() string {
+	_, file, line, ok := runtime.Caller(2)
+	if !ok {
+		file = "???"
+		line = 0
+	}
+	short := file
+	for i := len(file) - 1; i > 0; i-- {
+		if file[i] == '/' {
+			short = file[i+1:]
+			break
+		}
+	}
+	file = short
+	return fmt.Sprintf("[%v:%v]", file, line)
+}
+
+func (l Logger) Debug(format string, v ...any) {
+	l.delegate.Printf(l.debugHeader+getCallerInfo()+" "+format, v...)
+}
+
+func (l Logger) Info(format string, v ...any) {
+	l.delegate.Printf(l.infoHeader+getCallerInfo()+" "+format, v...)
+}
+
+func (l Logger) Warning(format string, v ...any) {
+	l.delegate.Printf(l.warningHeader+getCallerInfo()+" "+format, v...)
+}
+
+func (l Logger) Error(format string, v ...any) {
+	l.delegate.Printf(l.errorHeader+getCallerInfo()+" "+format, v...)
+}
+
+func (l Logger) Fatal(format string, v ...any) {
+	l.delegate.Printf(l.fatalHeader+getCallerInfo()+" "+format, v...)
+}