mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-30 15:50:08 +01:00
56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
|
// Copyright 2019 The Prometheus Authors
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
// +build !noprocesses
|
||
|
|
|
||
|
|
package collector
|
||
|
|
|
||
|
|
import (
|
||
|
|
"io/ioutil"
|
||
|
|
"strconv"
|
||
|
|
"strings"
|
||
|
|
"testing"
|
||
|
|
|
||
|
|
"github.com/prometheus/client_golang/prometheus"
|
||
|
|
)
|
||
|
|
|
||
|
|
func TestPerfCollector(t *testing.T) {
|
||
|
|
paranoidBytes, err := ioutil.ReadFile("/proc/sys/kernel/perf_event_paranoid")
|
||
|
|
if err != nil {
|
||
|
|
t.Skip("Procfs not mounted, skipping perf tests")
|
||
|
|
}
|
||
|
|
paranoidStr := strings.Replace(string(paranoidBytes), "\n", "", -1)
|
||
|
|
paranoid, err := strconv.Atoi(paranoidStr)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("Expected perf_event_paranoid to be an int, got: %s", paranoidStr)
|
||
|
|
}
|
||
|
|
if paranoid >= 1 {
|
||
|
|
t.Skip("Skipping perf tests, set perf_event_paranoid to 0")
|
||
|
|
}
|
||
|
|
collector, err := NewPerfCollector()
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Setup background goroutine to capture metrics.
|
||
|
|
metrics := make(chan prometheus.Metric)
|
||
|
|
defer close(metrics)
|
||
|
|
go func() {
|
||
|
|
for range metrics {
|
||
|
|
}
|
||
|
|
}()
|
||
|
|
if err := collector.Update(metrics); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
}
|