1 files changed, 112 insertions, 0 deletions
diff --git a/vendor/github.com/mattermost/logr/v2/targets/syslog.go b/vendor/github.com/mattermost/logr/v2/targets/syslog.go
new file mode 100644
index 00000000..fc3fcc5f
--- /dev/null
+++ b/vendor/github.com/mattermost/logr/v2/targets/syslog.go
@@ -0,0 +1,112 @@
+// +build !windows,!nacl,!plan9
+
+package targets
+
+import (
+	"crypto/tls"
+	"errors"
+	"fmt"
+
+	"github.com/mattermost/logr/v2"
+	syslog "github.com/wiggin77/srslog"
+)
+
+// Syslog outputs log records to local or remote syslog.
+type Syslog struct {
+	params *SyslogOptions
+	writer *syslog.Writer
+}
+
+// SyslogOptions provides parameters for dialing a syslog daemon.
+type SyslogOptions struct {
+	IP       string `json:"ip,omitempty"` // deprecated
+	Host     string `json:"host"`
+	Port     int    `json:"port"`
+	TLS      bool   `json:"tls"`
+	Cert     string `json:"cert"`
+	Insecure bool   `json:"insecure"`
+	Tag      string `json:"tag"`
+}
+
+func (so SyslogOptions) CheckValid() error {
+	if so.Host == "" && so.IP == "" {
+		return errors.New("missing host")
+	}
+	if so.Port == 0 {
+		return errors.New("missing port")
+	}
+	return nil
+}
+
+// NewSyslogTarget creates a target capable of outputting log records to remote or local syslog, with or without TLS.
+func NewSyslogTarget(params *SyslogOptions) (*Syslog, error) {
+	if params == nil {
+		return nil, errors.New("params cannot be nil")
+	}
+
+	s := &Syslog{
+		params: params,
+	}
+	return s, nil
+}
+
+// Init is called once to initialize the target.
+func (s *Syslog) Init() error {
+	network := "tcp"
+	var config *tls.Config
+
+	if s.params.TLS {
+		network = "tcp+tls"
+		config = &tls.Config{InsecureSkipVerify: s.params.Insecure}
+		if s.params.Cert != "" {
+			pool, err := GetCertPool(s.params.Cert)
+			if err != nil {
+				return err
+			}
+			config.RootCAs = pool
+		}
+	}
+	raddr := fmt.Sprintf("%s:%d", s.params.IP, s.params.Port)
+	if raddr == ":0" {
+		// If no IP:port provided then connect to local syslog.
+		raddr = ""
+		network = ""
+	}
+
+	var err error
+	s.writer, err = syslog.DialWithTLSConfig(network, raddr, syslog.LOG_INFO, s.params.Tag, config)
+	return err
+}
+
+// Write outputs bytes to this file target.
+func (s *Syslog) Write(p []byte, rec *logr.LogRec) (int, error) {
+	txt := string(p)
+	n := len(txt)
+	var err error
+
+	switch rec.Level() {
+	case logr.Panic, logr.Fatal:
+		err = s.writer.Crit(txt)
+	case logr.Error:
+		err = s.writer.Err(txt)
+	case logr.Warn:
+		err = s.writer.Warning(txt)
+	case logr.Debug, logr.Trace:
+		err = s.writer.Debug(txt)
+	default:
+		// logr.Info plus all custom levels.
+		err = s.writer.Info(txt)
+	}
+
+	if err != nil {
+		n = 0
+		// syslog writer will try to reconnect.
+	}
+	return n, err
+}
+
+// Shutdown is called once to free/close any resources.
+// Target queue is already drained when this is called.
+func (s *Syslog) Shutdown() error {
+	return s.writer.Close()
+}