use go 1.12

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/hashicorp/go-syslog/unix.go

@@ -0,0 +1,123 @@
+// +build linux darwin dragonfly freebsd netbsd openbsd solaris
+
+package gsyslog
+
+import (
+	"fmt"
+	"log/syslog"
+	"strings"
+)
+
+// builtinLogger wraps the Golang implementation of a
+// syslog.Writer to provide the Syslogger interface
+type builtinLogger struct {
+	*builtinWriter
+}
+
+// NewLogger is used to construct a new Syslogger
+func NewLogger(p Priority, facility, tag string) (Syslogger, error) {
+	fPriority, err := facilityPriority(facility)
+	if err != nil {
+		return nil, err
+	}
+	priority := syslog.Priority(p) | fPriority
+	l, err := newBuiltin(priority, tag)
+	if err != nil {
+		return nil, err
+	}
+	return &builtinLogger{l}, nil
+}
+
+// DialLogger is used to construct a new Syslogger that establishes connection to remote syslog server
+func DialLogger(network, raddr string, p Priority, facility, tag string) (Syslogger, error) {
+	fPriority, err := facilityPriority(facility)
+	if err != nil {
+		return nil, err
+	}
+
+	priority := syslog.Priority(p) | fPriority
+
+	l, err := dialBuiltin(network, raddr, priority, tag)
+	if err != nil {
+		return nil, err
+	}
+
+	return &builtinLogger{l}, nil
+}
+
+// WriteLevel writes out a message at the given priority
+func (b *builtinLogger) WriteLevel(p Priority, buf []byte) error {
+	var err error
+	m := string(buf)
+	switch p {
+	case LOG_EMERG:
+		_, err = b.writeAndRetry(syslog.LOG_EMERG, m)
+	case LOG_ALERT:
+		_, err = b.writeAndRetry(syslog.LOG_ALERT, m)
+	case LOG_CRIT:
+		_, err = b.writeAndRetry(syslog.LOG_CRIT, m)
+	case LOG_ERR:
+		_, err = b.writeAndRetry(syslog.LOG_ERR, m)
+	case LOG_WARNING:
+		_, err = b.writeAndRetry(syslog.LOG_WARNING, m)
+	case LOG_NOTICE:
+		_, err = b.writeAndRetry(syslog.LOG_NOTICE, m)
+	case LOG_INFO:
+		_, err = b.writeAndRetry(syslog.LOG_INFO, m)
+	case LOG_DEBUG:
+		_, err = b.writeAndRetry(syslog.LOG_DEBUG, m)
+	default:
+		err = fmt.Errorf("Unknown priority: %v", p)
+	}
+	return err
+}
+
+// facilityPriority converts a facility string into
+// an appropriate priority level or returns an error
+func facilityPriority(facility string) (syslog.Priority, error) {
+	facility = strings.ToUpper(facility)
+	switch facility {
+	case "KERN":
+		return syslog.LOG_KERN, nil
+	case "USER":
+		return syslog.LOG_USER, nil
+	case "MAIL":
+		return syslog.LOG_MAIL, nil
+	case "DAEMON":
+		return syslog.LOG_DAEMON, nil
+	case "AUTH":
+		return syslog.LOG_AUTH, nil
+	case "SYSLOG":
+		return syslog.LOG_SYSLOG, nil
+	case "LPR":
+		return syslog.LOG_LPR, nil
+	case "NEWS":
+		return syslog.LOG_NEWS, nil
+	case "UUCP":
+		return syslog.LOG_UUCP, nil
+	case "CRON":
+		return syslog.LOG_CRON, nil
+	case "AUTHPRIV":
+		return syslog.LOG_AUTHPRIV, nil
+	case "FTP":
+		return syslog.LOG_FTP, nil
+	case "LOCAL0":
+		return syslog.LOG_LOCAL0, nil
+	case "LOCAL1":
+		return syslog.LOG_LOCAL1, nil
+	case "LOCAL2":
+		return syslog.LOG_LOCAL2, nil
+	case "LOCAL3":
+		return syslog.LOG_LOCAL3, nil
+	case "LOCAL4":
+		return syslog.LOG_LOCAL4, nil
+	case "LOCAL5":
+		return syslog.LOG_LOCAL5, nil
+	case "LOCAL6":
+		return syslog.LOG_LOCAL6, nil
+	case "LOCAL7":
+		return syslog.LOG_LOCAL7, nil
+	default:
+		return 0, fmt.Errorf("invalid syslog facility: %s", facility)
+	}
+}