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da5972b539
* Two new states will be added to the tcpstat collector called rx_queued_bytes and tx_queued_bytes. For UDP datagrams an additional collector 'udp_queues' can be used to expose the total lengths of the tx_queue and rx_queue. @SuperQ and @discordianfish this changes gives us the option to check for overloaded UDP + TCP processing. The names of the new TCP states and the UDP metric can be discussed. The current reasons are just: I don't want to add another collector for the same exposed file, so I just added the new states to the tcpstat collector. I chose the name 'udp_queue' instead of 'udpstat' as UDP has no state. Signed-off-by: Peter Bueschel <peter.bueschel@logmein.com>
124 lines
3.2 KiB
Go
124 lines
3.2 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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package collector
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import (
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"os"
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"strings"
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"testing"
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)
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func Test_parseTCPStatsError(t *testing.T) {
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tests := []struct {
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name string
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in string
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}{
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{
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name: "too few fields",
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in: "sl local_address\n 0: 00000000:0016",
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},
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{
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name: "missing colon in tx-rx field",
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in: "sl local_address rem_address st tx_queue rx_queue\n" +
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" 1: 0F02000A:0016 0202000A:8B6B 01 0000000000000001",
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},
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{
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name: "tx parsing issue",
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in: "sl local_address rem_address st tx_queue rx_queue\n" +
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" 1: 0F02000A:0016 0202000A:8B6B 01 0000000x:00000001",
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},
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{
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name: "rx parsing issue",
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in: "sl local_address rem_address st tx_queue rx_queue\n" +
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" 1: 0F02000A:0016 0202000A:8B6B 01 00000000:0000000x",
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},
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{
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name: "state parsing issue",
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in: "sl local_address rem_address st tx_queue rx_queue\n" +
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" 1: 0F02000A:0016 0202000A:8B6B 0H 00000000:00000001",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if _, err := parseTCPStats(strings.NewReader(tt.in)); err == nil {
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t.Fatal("expected an error, but none occurred")
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}
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})
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}
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}
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func TestTCPStat(t *testing.T) {
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noFile, _ := os.Open("follow the white rabbit")
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defer noFile.Close()
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if _, err := parseTCPStats(noFile); err == nil {
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t.Fatal("expected an error, but none occurred")
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}
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file, err := os.Open("fixtures/proc/net/tcpstat")
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if err != nil {
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t.Fatal(err)
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}
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defer file.Close()
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tcpStats, err := parseTCPStats(file)
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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 := 1, 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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func Test_getTCPStats(t *testing.T) {
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type args struct {
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statsFile string
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}
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tests := []struct {
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name string
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args args
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wantErr bool
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}{
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{
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name: "file not found",
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args: args{statsFile: "somewhere over the rainbow"},
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wantErr: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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_, err := getTCPStats(tt.args.statsFile)
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if (err != nil) != tt.wantErr {
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t.Errorf("getTCPStats() error = %v, wantErr %v", err, tt.wantErr)
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return
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}
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// other cases are covered by TestTCPStat()
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})
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}
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}
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