实现基本的访问日志策略

internal/accesslogs/storage_syslog.go

@@ -0,0 +1,137 @@
+package accesslogs
+
+import (
+	"errors"
+	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
+	"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs"
+	"github.com/iwind/TeaGo/logs"
+	"os/exec"
+	"runtime"
+	"strconv"
+)
+
+type SyslogStorageProtocol = string
+
+const (
+	SyslogStorageProtocolTCP    SyslogStorageProtocol = "tcp"
+	SyslogStorageProtocolUDP    SyslogStorageProtocol = "udp"
+	SyslogStorageProtocolNone   SyslogStorageProtocol = "none"
+	SyslogStorageProtocolSocket SyslogStorageProtocol = "socket"
+)
+
+type SyslogStoragePriority = int
+
+// SyslogStorage syslog存储策略
+type SyslogStorage struct {
+	BaseStorage
+
+	config *serverconfigs.AccessLogSyslogStorageConfig
+
+	exe string
+}
+
+func NewSyslogStorage(config *serverconfigs.AccessLogSyslogStorageConfig) *SyslogStorage {
+	return &SyslogStorage{config: config}
+}
+
+func (this *SyslogStorage) Config() interface{} {
+	return this.config
+}
+
+// Start 开启
+func (this *SyslogStorage) Start() error {
+	if runtime.GOOS != "linux" {
+		return errors.New("'syslog' storage only works on linux")
+	}
+
+	exe, err := exec.LookPath("logger")
+	if err != nil {
+		return err
+	}
+
+	this.exe = exe
+
+	return nil
+}
+
+// 写入日志
+func (this *SyslogStorage) Write(accessLogs []*pb.HTTPAccessLog) error {
+	if len(accessLogs) == 0 {
+		return nil
+	}
+
+	args := []string{}
+	if len(this.config.Tag) > 0 {
+		args = append(args, "-t", this.config.Tag)
+	}
+
+	if this.config.Priority >= 0 {
+		args = append(args, "-p", strconv.Itoa(this.config.Priority))
+	}
+
+	switch this.config.Protocol {
+	case SyslogStorageProtocolTCP:
+		args = append(args, "-T")
+		if len(this.config.ServerAddr) > 0 {
+			args = append(args, "-n", this.config.ServerAddr)
+		}
+		if this.config.ServerPort > 0 {
+			args = append(args, "-P", strconv.Itoa(this.config.ServerPort))
+		}
+	case SyslogStorageProtocolUDP:
+		args = append(args, "-d")
+		if len(this.config.ServerAddr) > 0 {
+			args = append(args, "-n", this.config.ServerAddr)
+		}
+		if this.config.ServerPort > 0 {
+			args = append(args, "-P", strconv.Itoa(this.config.ServerPort))
+		}
+	case SyslogStorageProtocolSocket:
+		args = append(args, "-u")
+		args = append(args, this.config.Socket)
+	case SyslogStorageProtocolNone:
+		// do nothing
+	}
+
+	args = append(args, "-S", "10240")
+
+	cmd := exec.Command(this.exe, args...)
+	w, err := cmd.StdinPipe()
+	if err != nil {
+		return err
+	}
+	err = cmd.Start()
+	if err != nil {
+		return err
+	}
+
+	for _, accessLog := range accessLogs {
+		data, err := this.Marshal(accessLog)
+		if err != nil {
+			logs.Error(err)
+			continue
+		}
+		_, err = w.Write(data)
+		if err != nil {
+			logs.Error(err)
+		}
+
+		_, err = w.Write([]byte("\n"))
+		if err != nil {
+			logs.Error(err)
+		}
+	}
+
+	_ = w.Close()
+	err = cmd.Wait()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Close 关闭
+func (this *SyslogStorage) Close() error {
+	return nil
+}