mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-09-20 08:07:31 -07:00
130 lines
4.1 KiB
Go
130 lines
4.1 KiB
Go
// Copyright 2021 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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"bufio"
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"fmt"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"syscall"
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"testing"
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"github.com/go-kit/kit/log"
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"github.com/prometheus/client_golang/prometheus"
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"golang.org/x/sys/unix"
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)
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type EthtoolFixture struct {
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fixturePath string
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}
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func (e *EthtoolFixture) Stats(intf string) (map[string]uint64, error) {
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res := make(map[string]uint64)
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fixtureFile, err := os.Open(filepath.Join(e.fixturePath, intf))
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if e, ok := err.(*os.PathError); ok && e.Err == syscall.ENOENT {
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// The fixture for this interface doesn't exist. Translate that to unix.EOPNOTSUPP
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// to replicate an interface that doesn't support ethtool stats
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return res, unix.EOPNOTSUPP
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}
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if err != nil {
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return res, err
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}
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defer fixtureFile.Close()
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scanner := bufio.NewScanner(fixtureFile)
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for scanner.Scan() {
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line := scanner.Text()
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if strings.HasPrefix(line, "#") {
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continue
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}
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if strings.HasPrefix(line, "NIC statistics:") {
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continue
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}
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line = strings.Trim(line, " ")
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items := strings.Split(line, ": ")
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val, err := strconv.ParseUint(items[1], 10, 64)
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if err != nil {
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return res, err
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}
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if items[0] == "ERROR" {
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return res, unix.Errno(val)
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}
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res[items[0]] = val
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}
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return res, err
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}
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func NewEthtoolTestCollector(logger log.Logger) (Collector, error) {
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collector, err := makeEthtoolCollector(logger)
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collector.stats = &EthtoolFixture{
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fixturePath: "fixtures/ethtool/",
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}
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if err != nil {
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return nil, err
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}
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return collector, nil
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}
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func TestEthtoolCollector(t *testing.T) {
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testcases := []string{
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prometheus.NewDesc("node_ethtool_align_errors", "Network interface align_errors", []string{"device"}, nil).String(),
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prometheus.NewDesc("node_ethtool_received_broadcast", "Network interface rx_broadcast", []string{"device"}, nil).String(),
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prometheus.NewDesc("node_ethtool_received_errors_total", "Number of received frames with errors", []string{"device"}, nil).String(),
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prometheus.NewDesc("node_ethtool_received_missed", "Network interface rx_missed", []string{"device"}, nil).String(),
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prometheus.NewDesc("node_ethtool_received_multicast", "Network interface rx_multicast", []string{"device"}, nil).String(),
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prometheus.NewDesc("node_ethtool_received_packets_total", "Network interface packets received", []string{"device"}, nil).String(),
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prometheus.NewDesc("node_ethtool_received_unicast", "Network interface rx_unicast", []string{"device"}, nil).String(),
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prometheus.NewDesc("node_ethtool_transmitted_aborted", "Network interface tx_aborted", []string{"device"}, nil).String(),
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prometheus.NewDesc("node_ethtool_transmitted_errors_total", "Number of sent frames with errors", []string{"device"}, nil).String(),
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prometheus.NewDesc("node_ethtool_transmitted_multi_collisions", "Network interface tx_multi_collisions", []string{"device"}, nil).String(),
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prometheus.NewDesc("node_ethtool_transmitted_packets_total", "Network interface packets sent", []string{"device"}, nil).String(),
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}
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*sysPath = "fixtures/sys"
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collector, err := NewEthtoolTestCollector(log.NewNopLogger())
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if err != nil {
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panic(err)
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}
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sink := make(chan prometheus.Metric)
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go func() {
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err = collector.Update(sink)
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if err != nil {
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panic(fmt.Errorf("failed to update collector: %s", err))
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}
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close(sink)
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}()
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for _, expected := range testcases {
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metric := (<-sink)
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if metric == nil {
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t.Fatalf("Expected '%s' but got nothing (nil).", expected)
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}
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got := metric.Desc().String()
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metric.Desc()
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if expected != got {
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t.Errorf("Expected '%s' but got '%s'", expected, got)
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} else {
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t.Logf("Successfully got '%s'", got)
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}
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}
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}
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