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package trace
import (
"fmt"
"log"
"os"
"sync/atomic"
)
var (
// logger is the logger to use for tracing.
logger = newLogger()
// current is the targets that are enabled for tracing.
current atomic.Int32
)
func newLogger() *log.Logger {
return log.New(os.Stderr, "", log.Ltime|log.Lmicroseconds|log.Lshortfile)
}
// Target is a tracing target.
type Target int32
const (
// General traces general operations.
General Target = 1 << iota
// Packet traces git packets.
Packet
)
// SetTarget sets the tracing targets.
func SetTarget(target Target) {
current.Store(int32(target))
}
// SetLogger sets the logger to use for tracing.
func SetLogger(l *log.Logger) {
logger = l
}
// Print prints the given message only if the target is enabled.
func (t Target) Print(args ...interface{}) {
if int32(t)¤t.Load() != 0 {
logger.Output(2, fmt.Sprint(args...)) // nolint: errcheck
}
}
// Printf prints the given message only if the target is enabled.
func (t Target) Printf(format string, args ...interface{}) {
if int32(t)¤t.Load() != 0 {
logger.Output(2, fmt.Sprintf(format, args...)) // nolint: errcheck
}
}
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