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794e058b51
* netstat: Use procfs parsers for netstat, snmp and snmp6 Replace the hand-written parsers for /proc/net/netstat, /proc/net/snmp and /proc/net/snmp6 with the parsers from prometheus/procfs (Proc.Netstat, Proc.Snmp and Proc.Snmp6). The statistics are read via /proc/self/net, which is equivalent to /proc/net (both are network-namespace local views of the current process), so the collected data is unchanged. Metrics are exposed by iterating the procfs statistics structs, the same approach the NFS collector uses: fields are *float64 and only the ones present on the system are exported, matching the previous behavior. The --collector.netstat.fields flag and the exported metric names are unchanged; the e2e golden output is identical. Signed-off-by: neoLsH <43921685+neoLsH@users.noreply.github.com> * netstat: use explicit package-level metric descriptors Replace the per-scrape prometheus.NewDesc calls with a pre-built map of explicit descriptors (netstat_descs_linux.go, generated from the procfs statistics structs), as requested in review. Collection still reflects over the procfs structs but looks up the descriptor by "<protocol>_<field>", so descriptors are allocated once and are source-visible literals for the AST-based doc generation. Metric names, help strings and types are unchanged. Signed-off-by: 霏承 <huangleshu.hls@alibaba-inc.com> * Bump procfs to v0.22.0 to populate legacy TcpExt descriptors procfs v0.22.0 includes prometheus/procfs#863, which models the 10 legacy TcpExt counters. With this bump, the explicit descriptors already present in netstat_descs_linux.go start populating for users whose field regex selects them, restoring parity with older kernels. Part of #3796. Signed-off-by: 霏承 <huangleshu.hls@alibaba-inc.com> * Add generator and drift test for the netstat descriptor table netstat_descs_linux.go was previously committed without its generator. Add an in-repo generator (netstat_descs_gen.go, a build-ignored program run via GOOS=linux go generate ./collector) that regenerates the explicit descriptor table from the procfs structs, mirroring the go:generate pattern used elsewhere in the Prometheus ecosystem. Add TestNetStatDescsInSync, a drift test that fails if the committed table diverges from the procfs structs (e.g. after a procfs upgrade) until the table is regenerated. Part of #3796. Signed-off-by: 霏承 <huangleshu.hls@alibaba-inc.com> --------- Signed-off-by: neoLsH <43921685+neoLsH@users.noreply.github.com> Signed-off-by: 霏承 <huangleshu.hls@alibaba-inc.com>
190 lines
7.2 KiB
Go
190 lines
7.2 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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//go:build !nonetstat
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package collector
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import (
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"io"
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"log/slog"
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"strings"
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"testing"
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"github.com/alecthomas/kingpin/v2"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/testutil"
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)
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type testNetStatCollector struct {
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c Collector
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}
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func (c testNetStatCollector) Collect(ch chan<- prometheus.Metric) {
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c.c.Update(ch)
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}
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func (c testNetStatCollector) Describe(ch chan<- *prometheus.Desc) {
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prometheus.DescribeByCollect(c, ch)
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}
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func NewTestNetStatCollector(t *testing.T, logger *slog.Logger) prometheus.Collector {
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t.Helper()
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c, err := NewNetStatCollector(logger)
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if err != nil {
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t.Fatal(err)
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}
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return testNetStatCollector{c: c}
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}
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func TestNetStats(t *testing.T) {
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if _, err := kingpin.CommandLine.Parse([]string{}); err != nil {
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t.Fatal(err)
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}
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*procPath = "fixtures/proc"
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logger := slog.New(slog.NewTextHandler(io.Discard, nil))
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c := NewTestNetStatCollector(t, logger)
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expected := `
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# HELP node_netstat_Icmp6_InErrors Statistic Icmp6InErrors.
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# TYPE node_netstat_Icmp6_InErrors untyped
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node_netstat_Icmp6_InErrors 0
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# HELP node_netstat_Icmp6_InMsgs Statistic Icmp6InMsgs.
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# TYPE node_netstat_Icmp6_InMsgs untyped
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node_netstat_Icmp6_InMsgs 0
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# HELP node_netstat_Icmp6_OutMsgs Statistic Icmp6OutMsgs.
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# TYPE node_netstat_Icmp6_OutMsgs untyped
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node_netstat_Icmp6_OutMsgs 8
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# HELP node_netstat_Icmp_InErrors Statistic IcmpInErrors.
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# TYPE node_netstat_Icmp_InErrors untyped
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node_netstat_Icmp_InErrors 0
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# HELP node_netstat_Icmp_InMsgs Statistic IcmpInMsgs.
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# TYPE node_netstat_Icmp_InMsgs untyped
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node_netstat_Icmp_InMsgs 104
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# HELP node_netstat_Icmp_OutMsgs Statistic IcmpOutMsgs.
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# TYPE node_netstat_Icmp_OutMsgs untyped
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node_netstat_Icmp_OutMsgs 120
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# HELP node_netstat_Ip6_InOctets Statistic Ip6InOctets.
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# TYPE node_netstat_Ip6_InOctets untyped
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node_netstat_Ip6_InOctets 460
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# HELP node_netstat_Ip6_OutOctets Statistic Ip6OutOctets.
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# TYPE node_netstat_Ip6_OutOctets untyped
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node_netstat_Ip6_OutOctets 536
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# HELP node_netstat_IpExt_InOctets Statistic IpExtInOctets.
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# TYPE node_netstat_IpExt_InOctets untyped
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node_netstat_IpExt_InOctets 6.28639697e+09
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# HELP node_netstat_IpExt_OutOctets Statistic IpExtOutOctets.
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# TYPE node_netstat_IpExt_OutOctets untyped
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node_netstat_IpExt_OutOctets 2.786264347e+09
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# HELP node_netstat_Ip_Forwarding Statistic IpForwarding.
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# TYPE node_netstat_Ip_Forwarding untyped
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node_netstat_Ip_Forwarding 1
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# HELP node_netstat_TcpExt_ListenDrops Statistic TcpExtListenDrops.
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# TYPE node_netstat_TcpExt_ListenDrops untyped
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node_netstat_TcpExt_ListenDrops 0
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# HELP node_netstat_TcpExt_ListenOverflows Statistic TcpExtListenOverflows.
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# TYPE node_netstat_TcpExt_ListenOverflows untyped
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node_netstat_TcpExt_ListenOverflows 0
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# HELP node_netstat_TcpExt_SyncookiesFailed Statistic TcpExtSyncookiesFailed.
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# TYPE node_netstat_TcpExt_SyncookiesFailed untyped
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node_netstat_TcpExt_SyncookiesFailed 2
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# HELP node_netstat_TcpExt_SyncookiesRecv Statistic TcpExtSyncookiesRecv.
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# TYPE node_netstat_TcpExt_SyncookiesRecv untyped
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node_netstat_TcpExt_SyncookiesRecv 0
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# HELP node_netstat_TcpExt_SyncookiesSent Statistic TcpExtSyncookiesSent.
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# TYPE node_netstat_TcpExt_SyncookiesSent untyped
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node_netstat_TcpExt_SyncookiesSent 0
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# HELP node_netstat_TcpExt_TCPOFOQueue Statistic TcpExtTCPOFOQueue.
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# TYPE node_netstat_TcpExt_TCPOFOQueue untyped
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node_netstat_TcpExt_TCPOFOQueue 42
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# HELP node_netstat_TcpExt_TCPRcvQDrop Statistic TcpExtTCPRcvQDrop.
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# TYPE node_netstat_TcpExt_TCPRcvQDrop untyped
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node_netstat_TcpExt_TCPRcvQDrop 131
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# HELP node_netstat_TcpExt_TCPTimeouts Statistic TcpExtTCPTimeouts.
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# TYPE node_netstat_TcpExt_TCPTimeouts untyped
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node_netstat_TcpExt_TCPTimeouts 115
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# HELP node_netstat_Tcp_ActiveOpens Statistic TcpActiveOpens.
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# TYPE node_netstat_Tcp_ActiveOpens untyped
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node_netstat_Tcp_ActiveOpens 3556
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# HELP node_netstat_Tcp_CurrEstab Statistic TcpCurrEstab.
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# TYPE node_netstat_Tcp_CurrEstab untyped
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node_netstat_Tcp_CurrEstab 0
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# HELP node_netstat_Tcp_InErrs Statistic TcpInErrs.
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# TYPE node_netstat_Tcp_InErrs untyped
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node_netstat_Tcp_InErrs 5
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# HELP node_netstat_Tcp_InSegs Statistic TcpInSegs.
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# TYPE node_netstat_Tcp_InSegs untyped
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node_netstat_Tcp_InSegs 5.7252008e+07
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# HELP node_netstat_Tcp_OutRsts Statistic TcpOutRsts.
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# TYPE node_netstat_Tcp_OutRsts untyped
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node_netstat_Tcp_OutRsts 1003
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# HELP node_netstat_Tcp_OutSegs Statistic TcpOutSegs.
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# TYPE node_netstat_Tcp_OutSegs untyped
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node_netstat_Tcp_OutSegs 5.4915039e+07
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# HELP node_netstat_Tcp_PassiveOpens Statistic TcpPassiveOpens.
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# TYPE node_netstat_Tcp_PassiveOpens untyped
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node_netstat_Tcp_PassiveOpens 230
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# HELP node_netstat_Tcp_RetransSegs Statistic TcpRetransSegs.
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# TYPE node_netstat_Tcp_RetransSegs untyped
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node_netstat_Tcp_RetransSegs 227
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# HELP node_netstat_Udp6_InDatagrams Statistic Udp6InDatagrams.
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# TYPE node_netstat_Udp6_InDatagrams untyped
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node_netstat_Udp6_InDatagrams 0
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# HELP node_netstat_Udp6_InErrors Statistic Udp6InErrors.
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# TYPE node_netstat_Udp6_InErrors untyped
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node_netstat_Udp6_InErrors 0
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# HELP node_netstat_Udp6_NoPorts Statistic Udp6NoPorts.
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# TYPE node_netstat_Udp6_NoPorts untyped
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node_netstat_Udp6_NoPorts 0
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# HELP node_netstat_Udp6_OutDatagrams Statistic Udp6OutDatagrams.
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# TYPE node_netstat_Udp6_OutDatagrams untyped
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node_netstat_Udp6_OutDatagrams 0
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# HELP node_netstat_Udp6_RcvbufErrors Statistic Udp6RcvbufErrors.
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# TYPE node_netstat_Udp6_RcvbufErrors untyped
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node_netstat_Udp6_RcvbufErrors 9
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# HELP node_netstat_Udp6_SndbufErrors Statistic Udp6SndbufErrors.
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# TYPE node_netstat_Udp6_SndbufErrors untyped
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node_netstat_Udp6_SndbufErrors 8
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# HELP node_netstat_UdpLite6_InErrors Statistic UdpLite6InErrors.
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# TYPE node_netstat_UdpLite6_InErrors untyped
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node_netstat_UdpLite6_InErrors 0
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# HELP node_netstat_UdpLite_InErrors Statistic UdpLiteInErrors.
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# TYPE node_netstat_UdpLite_InErrors untyped
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node_netstat_UdpLite_InErrors 0
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# HELP node_netstat_Udp_InDatagrams Statistic UdpInDatagrams.
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# TYPE node_netstat_Udp_InDatagrams untyped
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node_netstat_Udp_InDatagrams 88542
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# HELP node_netstat_Udp_InErrors Statistic UdpInErrors.
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# TYPE node_netstat_Udp_InErrors untyped
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node_netstat_Udp_InErrors 0
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# HELP node_netstat_Udp_NoPorts Statistic UdpNoPorts.
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# TYPE node_netstat_Udp_NoPorts untyped
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node_netstat_Udp_NoPorts 120
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# HELP node_netstat_Udp_OutDatagrams Statistic UdpOutDatagrams.
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# TYPE node_netstat_Udp_OutDatagrams untyped
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node_netstat_Udp_OutDatagrams 53028
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# HELP node_netstat_Udp_RcvbufErrors Statistic UdpRcvbufErrors.
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# TYPE node_netstat_Udp_RcvbufErrors untyped
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node_netstat_Udp_RcvbufErrors 9
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# HELP node_netstat_Udp_SndbufErrors Statistic UdpSndbufErrors.
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# TYPE node_netstat_Udp_SndbufErrors untyped
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node_netstat_Udp_SndbufErrors 8
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`
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if err := testutil.CollectAndCompare(c, strings.NewReader(expected)); err != nil {
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t.Errorf("unexpected collecting result:\n%s", err)
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}
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}
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