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120 lines
6.3 KiB
120 lines
6.3 KiB
// Copyright 2019 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 !nobtrfs
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// +build !nobtrfs
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package collector
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import (
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"strings"
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"testing"
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"github.com/prometheus/procfs/btrfs"
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)
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var expectedBtrfsMetrics = [][]btrfsMetric{
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{
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{name: "info", value: 1, extraLabel: []string{"label"}, extraLabelValue: []string{"fixture"}},
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{name: "global_rsv_size_bytes", value: 1.6777216e+07},
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{name: "device_size_bytes", value: 1.073741824e+10, extraLabel: []string{"device"}, extraLabelValue: []string{"loop25"}},
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{name: "device_size_bytes", value: 1.073741824e+10, extraLabel: []string{"device"}, extraLabelValue: []string{"loop26"}},
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{name: "reserved_bytes", value: 0, extraLabel: []string{"block_group_type"}, extraLabelValue: []string{"data"}},
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{name: "used_bytes", value: 8.08189952e+08, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"data", "raid0"}},
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{name: "size_bytes", value: 2.147483648e+09, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"data", "raid0"}},
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{name: "allocation_ratio", value: 1, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"data", "raid0"}},
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{name: "reserved_bytes", value: 0, extraLabel: []string{"block_group_type"}, extraLabelValue: []string{"metadata"}},
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{name: "used_bytes", value: 933888, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"metadata", "raid1"}},
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{name: "size_bytes", value: 1.073741824e+09, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"metadata", "raid1"}},
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{name: "allocation_ratio", value: 2, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"metadata", "raid1"}},
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{name: "reserved_bytes", value: 0, extraLabel: []string{"block_group_type"}, extraLabelValue: []string{"system"}},
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{name: "used_bytes", value: 16384, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"system", "raid1"}},
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{name: "size_bytes", value: 8.388608e+06, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"system", "raid1"}},
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{name: "allocation_ratio", value: 2, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"system", "raid1"}},
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},
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{
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{name: "info", value: 1, extraLabel: []string{"label"}, extraLabelValue: []string{""}},
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{name: "global_rsv_size_bytes", value: 1.6777216e+07},
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{name: "device_size_bytes", value: 1.073741824e+10, extraLabel: []string{"device"}, extraLabelValue: []string{"loop22"}},
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{name: "device_size_bytes", value: 1.073741824e+10, extraLabel: []string{"device"}, extraLabelValue: []string{"loop23"}},
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{name: "device_size_bytes", value: 1.073741824e+10, extraLabel: []string{"device"}, extraLabelValue: []string{"loop24"}},
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{name: "device_size_bytes", value: 1.073741824e+10, extraLabel: []string{"device"}, extraLabelValue: []string{"loop25"}},
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{name: "reserved_bytes", value: 0, extraLabel: []string{"block_group_type"}, extraLabelValue: []string{"data"}},
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{name: "used_bytes", value: 0, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"data", "raid5"}},
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{name: "size_bytes", value: 6.44087808e+08, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"data", "raid5"}},
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{name: "allocation_ratio", value: 1.3333333333333333, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"data", "raid5"}},
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{name: "reserved_bytes", value: 0, extraLabel: []string{"block_group_type"}, extraLabelValue: []string{"metadata"}},
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{name: "used_bytes", value: 114688, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"metadata", "raid6"}},
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{name: "size_bytes", value: 4.29391872e+08, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"metadata", "raid6"}},
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{name: "allocation_ratio", value: 2, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"metadata", "raid6"}},
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{name: "reserved_bytes", value: 0, extraLabel: []string{"block_group_type"}, extraLabelValue: []string{"system"}},
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{name: "used_bytes", value: 16384, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"system", "raid6"}},
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{name: "size_bytes", value: 1.6777216e+07, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"system", "raid6"}},
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{name: "allocation_ratio", value: 2, extraLabel: []string{"block_group_type", "mode"}, extraLabelValue: []string{"system", "raid6"}},
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},
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}
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func checkMetric(exp, got *btrfsMetric) bool {
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if exp.name != got.name ||
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exp.value != got.value ||
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len(exp.extraLabel) != len(got.extraLabel) ||
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len(exp.extraLabelValue) != len(got.extraLabelValue) {
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return false
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}
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for i := range exp.extraLabel {
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if exp.extraLabel[i] != got.extraLabel[i] {
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return false
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}
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// Devices (loopXX) can appear in random order, so just check the first 4 characters.
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if strings.HasPrefix(got.extraLabelValue[i], "loop") &&
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exp.extraLabelValue[i][:4] == got.extraLabelValue[i][:4] {
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continue
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}
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if exp.extraLabelValue[i] != got.extraLabelValue[i] {
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return false
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}
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}
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return true
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}
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func TestBtrfs(t *testing.T) {
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fs, _ := btrfs.NewFS("fixtures/sys")
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collector := &btrfsCollector{fs: fs}
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stats, err := collector.fs.Stats()
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if err != nil {
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t.Fatalf("Failed to retrieve Btrfs stats: %v", err)
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}
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if len(stats) != len(expectedBtrfsMetrics) {
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t.Fatalf("Unexpected number of Btrfs stats: expected %v, got %v", len(expectedBtrfsMetrics), len(stats))
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}
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for i, s := range stats {
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metrics := collector.getMetrics(s)
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if len(metrics) != len(expectedBtrfsMetrics[i]) {
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t.Fatalf("Unexpected number of Btrfs metrics: expected %v, got %v", len(expectedBtrfsMetrics[i]), len(metrics))
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}
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for j, m := range metrics {
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exp := expectedBtrfsMetrics[i][j]
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if !checkMetric(&exp, &m) {
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t.Errorf("Incorrect btrfs metric: expected %#v, got: %#v", exp, m)
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}
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}
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}
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}
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