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feat(inputs.netflow): Add more fields for sFlow extended gateway packets #15521

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merged 1 commit into from
Jun 25, 2024
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feat(inputs.netflow): Add more fields for sFlow extended gateway packets #15521

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16 changes: 16 additions & 0 deletions plugins/inputs/netflow/sflow_v5.go
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,8 @@ import (
"encoding/hex"
"fmt"
"net"
"strconv"
"strings"
"time"

"github.com/gopacket/gopacket"
Expand Down Expand Up @@ -246,12 +248,19 @@ func (d *sflowv5Decoder) decodeFlowRecords(records []sflow.FlowRecord) (map[stri
fields["dst_mask"] = record.DstMaskLen
case sflow.ExtendedGateway:
var err error
fields["next_hop_ip_version"] = record.NextHopIPVersion
if err != nil {
return nil, fmt.Errorf("decoding 'next_hop' failed: %w", err)
}
fields["next_hop"], err = decodeIP(record.NextHop)
if err != nil {
return nil, fmt.Errorf("decoding 'next_hop' failed: %w", err)
}
fields["bgp_as"] = record.AS
fields["bgp_src_as"] = record.SrcAS
fields["bgp_dst_as"] = record.ASDestinations
fields["bgp_as_path_type"] = record.ASPathType
fields["bgp_as_path_length"] = record.ASPathLength
fields["bgp_next_hop"], err = decodeIP(record.NextHop)
if err != nil {
return nil, fmt.Errorf("decoding 'bgp_next_hop' failed: %w", err)
Expand All @@ -260,6 +269,13 @@ func (d *sflowv5Decoder) decodeFlowRecords(records []sflow.FlowRecord) (map[stri
if len(record.ASPath) > 0 {
fields["bgp_next_as"] = record.ASPath[0]
}
fields["community_length"] = record.CommunitiesLength
parts := make([]string, 0, len(record.Communities))
for _, c := range record.Communities {
parts = append(parts, "0x"+strconv.FormatUint(uint64(c), 16))
}
fields["communities"] = strings.Join(parts, ",")
fields["local_pref"] = record.LocalPref
default:
return nil, fmt.Errorf("unhandled flow record type %T", r.Data)
}
Expand Down
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