mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-18 22:52:11 +01:00
532 lines
18 KiB
Go
532 lines
18 KiB
Go
package syslog
|
|
|
|
import (
|
|
"bufio"
|
|
"crypto/tls"
|
|
"errors"
|
|
"flag"
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"sync/atomic"
|
|
"time"
|
|
|
|
"github.com/klauspost/compress/gzip"
|
|
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert/insertutils"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vlstorage"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/ingestserver"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/slicesutil"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
|
|
"github.com/VictoriaMetrics/metrics"
|
|
)
|
|
|
|
var (
|
|
syslogTimezone = flag.String("syslog.timezone", "Local", "Timezone to use when parsing timestamps in RFC3164 syslog messages. Timezone must be a valid IANA Time Zone. "+
|
|
"For example: America/New_York, Europe/Berlin, Etc/GMT+3 . See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/")
|
|
|
|
syslogTenantIDTCP = flagutil.NewArrayString("syslog.tenantID.tcp", "TenantID for logs ingested via the corresponding -syslog.listenAddr.tcp. "+
|
|
"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/")
|
|
syslogTenantIDUDP = flagutil.NewArrayString("syslog.tenantID.udp", "TenantID for logs ingested via the corresponding -syslog.listenAddr.udp. "+
|
|
"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/")
|
|
|
|
listenAddrTCP = flagutil.NewArrayString("syslog.listenAddr.tcp", "Comma-separated list of TCP addresses to listen to for Syslog messages. "+
|
|
"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/")
|
|
listenAddrUDP = flagutil.NewArrayString("syslog.listenAddr.udp", "Comma-separated list of UDP address to listen to for Syslog messages. "+
|
|
"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/")
|
|
|
|
tlsEnable = flagutil.NewArrayBool("syslog.tls", "Whether to enable TLS for receiving syslog messages at the corresponding -syslog.listenAddr.tcp. "+
|
|
"The corresponding -syslog.tlsCertFile and -syslog.tlsKeyFile must be set if -syslog.tls is set. See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#security")
|
|
tlsCertFile = flagutil.NewArrayString("syslog.tlsCertFile", "Path to file with TLS certificate for the corresponding -syslog.listenAddr.tcp if the corresponding -syslog.tls is set. "+
|
|
"Prefer ECDSA certs instead of RSA certs as RSA certs are slower. The provided certificate file is automatically re-read every second, so it can be dynamically updated. "+
|
|
"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#security")
|
|
tlsKeyFile = flagutil.NewArrayString("syslog.tlsKeyFile", "Path to file with TLS key for the corresponding -syslog.listenAddr.tcp if the corresponding -syslog.tls is set. "+
|
|
"The provided key file is automatically re-read every second, so it can be dynamically updated. "+
|
|
"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#security")
|
|
tlsCipherSuites = flagutil.NewArrayString("syslog.tlsCipherSuites", "Optional list of TLS cipher suites for -syslog.listenAddr.tcp if -syslog.tls is set. "+
|
|
"See the list of supported cipher suites at https://pkg.go.dev/crypto/tls#pkg-constants . "+
|
|
"See also https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#security")
|
|
tlsMinVersion = flag.String("syslog.tlsMinVersion", "TLS13", "The minimum TLS version to use for -syslog.listenAddr.tcp if -syslog.tls is set. "+
|
|
"Supported values: TLS10, TLS11, TLS12, TLS13. "+
|
|
"See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#security")
|
|
|
|
compressMethodTCP = flagutil.NewArrayString("syslog.compressMethod.tcp", "Compression method for syslog messages received at the corresponding -syslog.listenAddr.tcp. "+
|
|
"Supported values: none, gzip, deflate. See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#compression")
|
|
compressMethodUDP = flagutil.NewArrayString("syslog.compressMethod.udp", "Compression method for syslog messages received at the corresponding -syslog.listenAddr.udp. "+
|
|
"Supported values: none, gzip, deflate. See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#compression")
|
|
|
|
useLocalTimestampTCP = flagutil.NewArrayBool("syslog.useLocalTimestamp.tcp", "Whether to use local timestamp instead of the original timestamp for the ingested syslog messages "+
|
|
"at the corresponding -syslog.listenAddr.tcp. See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#log-timestamps")
|
|
useLocalTimestampUDP = flagutil.NewArrayBool("syslog.useLocalTimestamp.udp", "Whether to use local timestamp instead of the original timestamp for the ingested syslog messages "+
|
|
"at the corresponding -syslog.listenAddr.udp. See https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/#log-timestamps")
|
|
)
|
|
|
|
// MustInit initializes syslog parser at the given -syslog.listenAddr.tcp and -syslog.listenAddr.udp ports
|
|
//
|
|
// This function must be called after flag.Parse().
|
|
//
|
|
// MustStop() must be called in order to free up resources occupied by the initialized syslog parser.
|
|
func MustInit() {
|
|
if workersStopCh != nil {
|
|
logger.Panicf("BUG: MustInit() called twice without MustStop() call")
|
|
}
|
|
workersStopCh = make(chan struct{})
|
|
|
|
for argIdx, addr := range *listenAddrTCP {
|
|
workersWG.Add(1)
|
|
go func(addr string, argIdx int) {
|
|
runTCPListener(addr, argIdx)
|
|
workersWG.Done()
|
|
}(addr, argIdx)
|
|
}
|
|
|
|
for argIdx, addr := range *listenAddrUDP {
|
|
workersWG.Add(1)
|
|
go func(addr string, argIdx int) {
|
|
runUDPListener(addr, argIdx)
|
|
workersWG.Done()
|
|
}(addr, argIdx)
|
|
}
|
|
|
|
currentYear := time.Now().Year()
|
|
globalCurrentYear.Store(int64(currentYear))
|
|
workersWG.Add(1)
|
|
go func() {
|
|
ticker := time.NewTicker(time.Minute)
|
|
for {
|
|
select {
|
|
case <-workersStopCh:
|
|
ticker.Stop()
|
|
workersWG.Done()
|
|
return
|
|
case <-ticker.C:
|
|
currentYear := time.Now().Year()
|
|
globalCurrentYear.Store(int64(currentYear))
|
|
}
|
|
}
|
|
}()
|
|
|
|
if *syslogTimezone != "" {
|
|
tz, err := time.LoadLocation(*syslogTimezone)
|
|
if err != nil {
|
|
logger.Fatalf("cannot parse -syslog.timezone=%q: %s", *syslogTimezone, err)
|
|
}
|
|
globalTimezone = tz
|
|
} else {
|
|
globalTimezone = time.Local
|
|
}
|
|
}
|
|
|
|
var (
|
|
globalCurrentYear atomic.Int64
|
|
globalTimezone *time.Location
|
|
)
|
|
|
|
var (
|
|
workersWG sync.WaitGroup
|
|
workersStopCh chan struct{}
|
|
)
|
|
|
|
// MustStop stops syslog parser initialized via MustInit()
|
|
func MustStop() {
|
|
close(workersStopCh)
|
|
workersWG.Wait()
|
|
workersStopCh = nil
|
|
}
|
|
|
|
func runUDPListener(addr string, argIdx int) {
|
|
ln, err := net.ListenPacket(netutil.GetUDPNetwork(), addr)
|
|
if err != nil {
|
|
logger.Fatalf("cannot start UDP syslog server at %q: %s", addr, err)
|
|
}
|
|
|
|
tenantIDStr := syslogTenantIDUDP.GetOptionalArg(argIdx)
|
|
tenantID, err := logstorage.ParseTenantID(tenantIDStr)
|
|
if err != nil {
|
|
logger.Fatalf("cannot parse -syslog.tenantID.udp=%q for -syslog.listenAddr.udp=%q: %s", tenantIDStr, addr, err)
|
|
}
|
|
|
|
compressMethod := compressMethodUDP.GetOptionalArg(argIdx)
|
|
checkCompressMethod(compressMethod, addr, "udp")
|
|
|
|
useLocalTimestamp := useLocalTimestampUDP.GetOptionalArg(argIdx)
|
|
|
|
doneCh := make(chan struct{})
|
|
go func() {
|
|
serveUDP(ln, tenantID, compressMethod, useLocalTimestamp)
|
|
close(doneCh)
|
|
}()
|
|
|
|
logger.Infof("started accepting syslog messages at -syslog.listenAddr.udp=%q", addr)
|
|
<-workersStopCh
|
|
if err := ln.Close(); err != nil {
|
|
logger.Fatalf("syslog: cannot close UDP listener at %s: %s", addr, err)
|
|
}
|
|
<-doneCh
|
|
logger.Infof("finished accepting syslog messages at -syslog.listenAddr.udp=%q", addr)
|
|
}
|
|
|
|
func runTCPListener(addr string, argIdx int) {
|
|
var tlsConfig *tls.Config
|
|
if tlsEnable.GetOptionalArg(argIdx) {
|
|
certFile := tlsCertFile.GetOptionalArg(argIdx)
|
|
keyFile := tlsKeyFile.GetOptionalArg(argIdx)
|
|
tc, err := netutil.GetServerTLSConfig(certFile, keyFile, *tlsMinVersion, *tlsCipherSuites)
|
|
if err != nil {
|
|
logger.Fatalf("cannot load TLS cert from -syslog.tlsCertFile=%q, -syslog.tlsKeyFile=%q, -syslog.tlsMinVersion=%q, -syslog.tlsCipherSuites=%q: %s",
|
|
certFile, keyFile, *tlsMinVersion, *tlsCipherSuites, err)
|
|
}
|
|
tlsConfig = tc
|
|
}
|
|
ln, err := netutil.NewTCPListener("syslog", addr, false, tlsConfig)
|
|
if err != nil {
|
|
logger.Fatalf("syslog: cannot start TCP listener at %s: %s", addr, err)
|
|
}
|
|
|
|
tenantIDStr := syslogTenantIDTCP.GetOptionalArg(argIdx)
|
|
tenantID, err := logstorage.ParseTenantID(tenantIDStr)
|
|
if err != nil {
|
|
logger.Fatalf("cannot parse -syslog.tenantID.tcp=%q for -syslog.listenAddr.tcp=%q: %s", tenantIDStr, addr, err)
|
|
}
|
|
|
|
compressMethod := compressMethodTCP.GetOptionalArg(argIdx)
|
|
checkCompressMethod(compressMethod, addr, "tcp")
|
|
|
|
useLocalTimestamp := useLocalTimestampTCP.GetOptionalArg(argIdx)
|
|
|
|
doneCh := make(chan struct{})
|
|
go func() {
|
|
serveTCP(ln, tenantID, compressMethod, useLocalTimestamp)
|
|
close(doneCh)
|
|
}()
|
|
|
|
logger.Infof("started accepting syslog messages at -syslog.listenAddr.tcp=%q", addr)
|
|
<-workersStopCh
|
|
if err := ln.Close(); err != nil {
|
|
logger.Fatalf("syslog: cannot close TCP listener at %s: %s", addr, err)
|
|
}
|
|
<-doneCh
|
|
logger.Infof("finished accepting syslog messages at -syslog.listenAddr.tcp=%q", addr)
|
|
}
|
|
|
|
func checkCompressMethod(compressMethod, addr, protocol string) {
|
|
switch compressMethod {
|
|
case "", "none", "gzip", "deflate":
|
|
return
|
|
default:
|
|
logger.Fatalf("unsupported -syslog.compressMethod.%s=%q for -syslog.listenAddr.%s=%q; supported values: 'none', 'gzip', 'deflate'", protocol, compressMethod, protocol, addr)
|
|
}
|
|
}
|
|
|
|
func serveUDP(ln net.PacketConn, tenantID logstorage.TenantID, compressMethod string, useLocalTimestamp bool) {
|
|
gomaxprocs := cgroup.AvailableCPUs()
|
|
var wg sync.WaitGroup
|
|
localAddr := ln.LocalAddr()
|
|
for i := 0; i < gomaxprocs; i++ {
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
cp := insertutils.GetCommonParamsForSyslog(tenantID)
|
|
var bb bytesutil.ByteBuffer
|
|
bb.B = bytesutil.ResizeNoCopyNoOverallocate(bb.B, 64*1024)
|
|
for {
|
|
bb.Reset()
|
|
bb.B = bb.B[:cap(bb.B)]
|
|
n, remoteAddr, err := ln.ReadFrom(bb.B)
|
|
if err != nil {
|
|
udpErrorsTotal.Inc()
|
|
var ne net.Error
|
|
if errors.As(err, &ne) {
|
|
if ne.Temporary() {
|
|
logger.Errorf("syslog: temporary error when listening for UDP at %q: %s", localAddr, err)
|
|
time.Sleep(time.Second)
|
|
continue
|
|
}
|
|
if strings.Contains(err.Error(), "use of closed network connection") {
|
|
break
|
|
}
|
|
}
|
|
logger.Errorf("syslog: cannot read UDP data from %s at %s: %s", remoteAddr, localAddr, err)
|
|
continue
|
|
}
|
|
bb.B = bb.B[:n]
|
|
udpRequestsTotal.Inc()
|
|
if err := processStream(bb.NewReader(), compressMethod, useLocalTimestamp, cp); err != nil {
|
|
logger.Errorf("syslog: cannot process UDP data from %s at %s: %s", remoteAddr, localAddr, err)
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
wg.Wait()
|
|
}
|
|
|
|
func serveTCP(ln net.Listener, tenantID logstorage.TenantID, compressMethod string, useLocalTimestamp bool) {
|
|
var cm ingestserver.ConnsMap
|
|
cm.Init("syslog")
|
|
|
|
var wg sync.WaitGroup
|
|
addr := ln.Addr()
|
|
for {
|
|
c, err := ln.Accept()
|
|
if err != nil {
|
|
var ne net.Error
|
|
if errors.As(err, &ne) {
|
|
if ne.Temporary() {
|
|
logger.Errorf("syslog: temporary error when listening for TCP addr %q: %s", addr, err)
|
|
time.Sleep(time.Second)
|
|
continue
|
|
}
|
|
if strings.Contains(err.Error(), "use of closed network connection") {
|
|
break
|
|
}
|
|
logger.Fatalf("syslog: unrecoverable error when accepting TCP connections at %q: %s", addr, err)
|
|
}
|
|
logger.Fatalf("syslog: unexpected error when accepting TCP connections at %q: %s", addr, err)
|
|
}
|
|
if !cm.Add(c) {
|
|
_ = c.Close()
|
|
break
|
|
}
|
|
|
|
wg.Add(1)
|
|
go func() {
|
|
cp := insertutils.GetCommonParamsForSyslog(tenantID)
|
|
if err := processStream(c, compressMethod, useLocalTimestamp, cp); err != nil {
|
|
logger.Errorf("syslog: cannot process TCP data at %q: %s", addr, err)
|
|
}
|
|
|
|
cm.Delete(c)
|
|
_ = c.Close()
|
|
wg.Done()
|
|
}()
|
|
}
|
|
|
|
cm.CloseAll(0)
|
|
wg.Wait()
|
|
}
|
|
|
|
// processStream parses a stream of syslog messages from r and ingests them into vlstorage.
|
|
func processStream(r io.Reader, compressMethod string, useLocalTimestamp bool, cp *insertutils.CommonParams) error {
|
|
if err := vlstorage.CanWriteData(); err != nil {
|
|
return err
|
|
}
|
|
|
|
lmp := cp.NewLogMessageProcessor()
|
|
err := processStreamInternal(r, compressMethod, useLocalTimestamp, lmp)
|
|
lmp.MustClose()
|
|
|
|
return err
|
|
}
|
|
|
|
func processStreamInternal(r io.Reader, compressMethod string, useLocalTimestamp bool, lmp insertutils.LogMessageProcessor) error {
|
|
switch compressMethod {
|
|
case "", "none":
|
|
case "gzip":
|
|
zr, err := common.GetGzipReader(r)
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read gzipped data: %w", err)
|
|
}
|
|
r = zr
|
|
case "deflate":
|
|
zr, err := common.GetZlibReader(r)
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read deflated data: %w", err)
|
|
}
|
|
r = zr
|
|
default:
|
|
logger.Panicf("BUG: unsupported compressMethod=%q; supported values: none, gzip, deflate", compressMethod)
|
|
}
|
|
|
|
err := processUncompressedStream(r, useLocalTimestamp, lmp)
|
|
|
|
switch compressMethod {
|
|
case "gzip":
|
|
zr := r.(*gzip.Reader)
|
|
common.PutGzipReader(zr)
|
|
case "deflate":
|
|
zr := r.(io.ReadCloser)
|
|
common.PutZlibReader(zr)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func processUncompressedStream(r io.Reader, useLocalTimestamp bool, lmp insertutils.LogMessageProcessor) error {
|
|
wcr := writeconcurrencylimiter.GetReader(r)
|
|
defer writeconcurrencylimiter.PutReader(wcr)
|
|
|
|
slr := getSyslogLineReader(wcr)
|
|
defer putSyslogLineReader(slr)
|
|
|
|
n := 0
|
|
for {
|
|
ok := slr.nextLine()
|
|
wcr.DecConcurrency()
|
|
if !ok {
|
|
break
|
|
}
|
|
|
|
currentYear := int(globalCurrentYear.Load())
|
|
err := processLine(slr.line, currentYear, globalTimezone, useLocalTimestamp, lmp)
|
|
if err != nil {
|
|
errorsTotal.Inc()
|
|
return fmt.Errorf("cannot read line #%d: %s", n, err)
|
|
}
|
|
n++
|
|
rowsIngestedTotal.Inc()
|
|
}
|
|
return slr.Error()
|
|
}
|
|
|
|
type syslogLineReader struct {
|
|
line []byte
|
|
|
|
br *bufio.Reader
|
|
err error
|
|
}
|
|
|
|
func (slr *syslogLineReader) reset(r io.Reader) {
|
|
slr.line = slr.line[:0]
|
|
slr.br.Reset(r)
|
|
slr.err = nil
|
|
}
|
|
|
|
// Error returns the last error occurred in slr.
|
|
func (slr *syslogLineReader) Error() error {
|
|
if slr.err == nil || slr.err == io.EOF {
|
|
return nil
|
|
}
|
|
return slr.err
|
|
}
|
|
|
|
// nextLine reads the next syslog line from slr and stores it at slr.line.
|
|
//
|
|
// false is returned if the next line cannot be read. Error() must be called in this case
|
|
// in order to verify whether there is an error or just slr stream has been finished.
|
|
func (slr *syslogLineReader) nextLine() bool {
|
|
if slr.err != nil {
|
|
return false
|
|
}
|
|
|
|
again:
|
|
prefix, err := slr.br.ReadSlice(' ')
|
|
if err != nil {
|
|
if err != io.EOF {
|
|
slr.err = fmt.Errorf("cannot read message frame prefix: %w", err)
|
|
return false
|
|
}
|
|
if len(prefix) == 0 {
|
|
slr.err = err
|
|
return false
|
|
}
|
|
}
|
|
// skip empty lines
|
|
for len(prefix) > 0 && prefix[0] == '\n' {
|
|
prefix = prefix[1:]
|
|
}
|
|
if len(prefix) == 0 {
|
|
// An empty prefix or a prefix with empty lines - try reading yet another prefix.
|
|
goto again
|
|
}
|
|
|
|
if prefix[0] >= '0' && prefix[0] <= '9' {
|
|
// This is octet-counting method. See https://www.ietf.org/archive/id/draft-gerhards-syslog-plain-tcp-07.html#msgxfer
|
|
msgLenStr := bytesutil.ToUnsafeString(prefix[:len(prefix)-1])
|
|
msgLen, err := strconv.ParseUint(msgLenStr, 10, 64)
|
|
if err != nil {
|
|
slr.err = fmt.Errorf("cannot parse message length from %q: %w", msgLenStr, err)
|
|
return false
|
|
}
|
|
if maxMsgLen := insertutils.MaxLineSizeBytes.IntN(); msgLen > uint64(maxMsgLen) {
|
|
slr.err = fmt.Errorf("cannot read message longer than %d bytes; msgLen=%d", maxMsgLen, msgLen)
|
|
return false
|
|
}
|
|
slr.line = slicesutil.SetLength(slr.line, int(msgLen))
|
|
if _, err := io.ReadFull(slr.br, slr.line); err != nil {
|
|
slr.err = fmt.Errorf("cannot read message with size %d bytes: %w", msgLen, err)
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// This is octet-stuffing method. See https://www.ietf.org/archive/id/draft-gerhards-syslog-plain-tcp-07.html#octet-stuffing-legacy
|
|
slr.line = append(slr.line[:0], prefix...)
|
|
for {
|
|
line, err := slr.br.ReadSlice('\n')
|
|
if err == nil {
|
|
slr.line = append(slr.line, line[:len(line)-1]...)
|
|
return true
|
|
}
|
|
if err == io.EOF {
|
|
slr.line = append(slr.line, line...)
|
|
return true
|
|
}
|
|
if err == bufio.ErrBufferFull {
|
|
slr.line = append(slr.line, line...)
|
|
continue
|
|
}
|
|
slr.err = fmt.Errorf("cannot read message in octet-stuffing method: %w", err)
|
|
return false
|
|
}
|
|
}
|
|
|
|
func getSyslogLineReader(r io.Reader) *syslogLineReader {
|
|
v := syslogLineReaderPool.Get()
|
|
if v == nil {
|
|
br := bufio.NewReaderSize(r, 64*1024)
|
|
return &syslogLineReader{
|
|
br: br,
|
|
}
|
|
}
|
|
slr := v.(*syslogLineReader)
|
|
slr.reset(r)
|
|
return slr
|
|
}
|
|
|
|
func putSyslogLineReader(slr *syslogLineReader) {
|
|
syslogLineReaderPool.Put(slr)
|
|
}
|
|
|
|
var syslogLineReaderPool sync.Pool
|
|
|
|
func processLine(line []byte, currentYear int, timezone *time.Location, useLocalTimestamp bool, lmp insertutils.LogMessageProcessor) error {
|
|
p := logstorage.GetSyslogParser(currentYear, timezone)
|
|
lineStr := bytesutil.ToUnsafeString(line)
|
|
p.Parse(lineStr)
|
|
|
|
var ts int64
|
|
if useLocalTimestamp {
|
|
ts = time.Now().UnixNano()
|
|
} else {
|
|
nsecs, err := insertutils.ExtractTimestampRFC3339NanoFromFields("timestamp", p.Fields)
|
|
if err != nil {
|
|
return fmt.Errorf("cannot get timestamp from syslog line %q: %w", line, err)
|
|
}
|
|
ts = nsecs
|
|
}
|
|
logstorage.RenameField(p.Fields, "message", "_msg")
|
|
lmp.AddRow(ts, p.Fields)
|
|
logstorage.PutSyslogParser(p)
|
|
|
|
return nil
|
|
}
|
|
|
|
var (
|
|
rowsIngestedTotal = metrics.NewCounter(`vl_rows_ingested_total{type="syslog"}`)
|
|
|
|
errorsTotal = metrics.NewCounter(`vl_errors_total{type="syslog"}`)
|
|
|
|
udpRequestsTotal = metrics.NewCounter(`vl_udp_reqests_total{type="syslog"}`)
|
|
udpErrorsTotal = metrics.NewCounter(`vl_udp_errors_total{type="syslog"}`)
|
|
)
|