!1 Merge back to master

Merge pull request !1 from dev branch

server/libs/errutil/ettutil.go

@@ -0,0 +1,59 @@
+package errutil
+
+import (
+	"os"
+	"runtime/debug"
+)
+
+import (
+	"quickshare/server/libs/logutil"
+)
+
+type ErrUtil interface {
+	IsErr(err error) bool
+	IsFatalErr(err error) bool
+	RecoverPanic()
+}
+
+func NewErrChecker(logStack bool, logger logutil.LogUtil) ErrUtil {
+	return &ErrChecker{logStack: logStack, log: logger}
+}
+
+type ErrChecker struct {
+	log      logutil.LogUtil
+	logStack bool
+}
+
+// IsErr checks if error occurs
+func (e *ErrChecker) IsErr(err error) bool {
+	if err != nil {
+		e.log.Printf("Error:%q\n", err)
+		if e.logStack {
+			e.log.Println(debug.Stack())
+		}
+		return true
+	}
+	return false
+}
+
+// IsFatalPanic should be used with defer
+func (e *ErrChecker) IsFatalErr(fe error) bool {
+	if fe != nil {
+		e.log.Printf("Panic:%q", fe)
+		if e.logStack {
+			e.log.Println(debug.Stack())
+		}
+		os.Exit(1)
+	}
+	return false
+}
+
+// RecoverPanic catchs the panic and logs panic information
+func (e *ErrChecker) RecoverPanic() {
+	if r := recover(); r != nil {
+		e.log.Printf("Recovered:%v", r)
+		if e.logStack {
+			e.log.Println(debug.Stack())
+		}
+	}
+}