mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-09-19 23:57:30 -07:00
34a498e132
Note however that the InetDiagMsg struct contains a InetDiagSockID
member, which itself contains some members which are explicitly
specified as big-endian in Linux kernel source:
struct inet_diag_sockid {
__be16 idiag_sport;
__be16 idiag_dport;
__be32 idiag_src[4];
__be32 idiag_dst[4];
__u32 idiag_if;
__u32 idiag_cookie[2];
};
node_exporter currently does not use these members for anything, so this
is acceptable (for now).
Signed-off-by: Daniel Swarbrick <daniel.swarbrick@gmail.com>
88 lines
2.1 KiB
Go
88 lines
2.1 KiB
Go
// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package collector
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import (
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"bytes"
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"encoding/binary"
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"syscall"
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"testing"
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"github.com/josharian/native"
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"github.com/mdlayher/netlink"
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)
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func Test_parseTCPStats(t *testing.T) {
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encode := func(m InetDiagMsg) []byte {
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var buf bytes.Buffer
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err := binary.Write(&buf, native.Endian, m)
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if err != nil {
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panic(err)
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}
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return buf.Bytes()
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}
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msg := []netlink.Message{
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{
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Data: encode(InetDiagMsg{
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Family: syscall.AF_INET,
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State: uint8(tcpEstablished),
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Timer: 0,
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Retrans: 0,
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ID: InetDiagSockID{},
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Expires: 0,
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RQueue: 11,
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WQueue: 21,
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UID: 0,
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Inode: 0,
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}),
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},
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{
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Data: encode(InetDiagMsg{
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Family: syscall.AF_INET,
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State: uint8(tcpListen),
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Timer: 0,
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Retrans: 0,
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ID: InetDiagSockID{},
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Expires: 0,
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RQueue: 11,
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WQueue: 21,
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UID: 0,
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Inode: 0,
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}),
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},
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}
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tcpStats, err := parseTCPStats(msg)
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if err != nil {
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t.Fatal(err)
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}
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if want, got := 1, int(tcpStats[tcpEstablished]); want != got {
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t.Errorf("want tcpstat number of established state %d, got %d", want, got)
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}
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if want, got := 1, int(tcpStats[tcpListen]); want != got {
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t.Errorf("want tcpstat number of listen state %d, got %d", want, got)
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}
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if want, got := 42, int(tcpStats[tcpTxQueuedBytes]); want != got {
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t.Errorf("want tcpstat number of bytes in tx queue %d, got %d", want, got)
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}
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if want, got := 22, int(tcpStats[tcpRxQueuedBytes]); want != got {
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t.Errorf("want tcpstat number of bytes in rx queue %d, got %d", want, got)
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}
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}
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