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perfdata_test.go
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perfdata_test.go
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// Copyright 2023 Adam Chalkley
//
// https://github.com/atc0005/go-nagios
//
// Licensed under the MIT License. See LICENSE file in the project root for
// full license information.
// Package nagios_test provides test coverage for exported package
// functionality.
package nagios_test
import (
"testing"
"github.com/atc0005/go-nagios"
"github.com/google/go-cmp/cmp"
)
// TestParsePerfDataFailsForInvalidInput asserts that given invalid
// performance data metric strings (as displayed by Nagios, emitted by
// plugins) that parsing as valid PerformanceData values will fail.
func TestParsePerfDataFailsForInvalidInput(t *testing.T) {
t.Parallel()
tests := map[string]struct {
// input is the performance data metrics for a plugin provided as a
// single string.
input string
}{
"unquoted labels containing spaces": {
input: `load 1=0.260;5.000;10.000;0; load 5=0.320;4.000;6.000;0; load 15=0.300;3.000;4.000;0;`,
},
"value field with a non-numeric value": {
input: `load1=xyz;5.000;10.000;0; load5=0.320;4.000;6.000;0; load15=0.300;3.000;4.000;0;`,
},
"extra semicolons": {
input: `load1=0.260;5.000;10.000;0;;;;;; load5=0.320;4.000;6.000;0; load15=0.300;3.000;4.000;0;`,
},
"empty input": {
input: "",
},
"missing label field": {
input: `=1;5.000;10.000;0; load5=0.320;4.000;6.000;0; load15=0.300;3.000;4.000;0;`,
},
}
for name, tt := range tests {
// Guard against referencing the loop iterator variable directly.
//
// https://stackoverflow.com/questions/68559574/using-the-variable-on-range-scope-x-in-function-literal-scopelint
// https://github.com/golang/go/wiki/CommonMistakes#using-goroutines-on-loop-iterator-variables
tt := tt
t.Run(name, func(t *testing.T) {
t.Logf("Evaluating input %q", tt.input)
result, err := nagios.ParsePerfData(tt.input)
if err == nil {
t.Logf("result: %+v:", result)
t.Fatalf(
"\nwant error when parsing invalid perfdata input\ngot successful parsing result",
)
} else {
t.Logf("result: %+v:", result)
t.Logf(
"OK: \nwant error when parsing invalid perfdata input\ngot error as expected: %v", err,
)
}
})
}
}
// TestParsePerfDataSucceedsForValidInput asserts that given valid performance
// data metric strings (as displayed by Nagios, emitted by plugins) that
// parsing as valid PerformanceData values will succeed as expected.
// Additionally, the resulting PerformanceData values are compared against
// expected PerformanceData values to assert all fields are as expected.
func TestParsePerfDataSucceedsForValidInput(t *testing.T) {
t.Parallel()
tests := map[string]struct {
// input is the performance data metrics for a plugin provided as a
// single string.
input string
// result provides both the literal expected values generated from
// parsing the input performance data string and the implicit overall
// results count.
result []nagios.PerformanceData
}{
"Load averages double quoted": {
// https://github.com/nagios-plugins/nagios-plugins/blob/12446aea1d353d891cd6291ba8086a0f5247c93d/plugins/check_load.c#L206-L210
input: `"load1=0.260;5.000;10.000;0; load5=0.320;4.000;6.000;0; load15=0.300;3.000;4.000;0;"`,
result: []nagios.PerformanceData{
{
Label: "load1",
Value: "0.260",
UnitOfMeasurement: "",
Warn: "5.000",
Crit: "10.000",
Min: "0",
Max: "",
},
{
Label: "load5",
Value: "0.320",
UnitOfMeasurement: "",
Warn: "4.000",
Crit: "6.000",
Min: "0",
Max: "",
},
{
Label: "load15",
Value: "0.300",
UnitOfMeasurement: "",
Warn: "3.000",
Crit: "4.000",
Min: "0",
Max: "",
},
},
},
"Load averages unquoted": {
// https://github.com/nagios-plugins/nagios-plugins/blob/12446aea1d353d891cd6291ba8086a0f5247c93d/plugins/check_load.c#L206-L210
input: `load1=0.260;5.000;10.000;0; load5=0.320;4.000;6.000;0; load15=0.300;3.000;4.000;0;`,
result: []nagios.PerformanceData{
{
Label: "load1",
Value: "0.260",
UnitOfMeasurement: "",
Warn: "5.000",
Crit: "10.000",
Min: "0",
Max: "",
},
{
Label: "load5",
Value: "0.320",
UnitOfMeasurement: "",
Warn: "4.000",
Crit: "6.000",
Min: "0",
Max: "",
},
{
Label: "load15",
Value: "0.300",
UnitOfMeasurement: "",
Warn: "3.000",
Crit: "4.000",
Min: "0",
Max: "",
},
},
},
"Single quoted time metric label with all semicolon separators": {
input: `'time'=49ms;;;;`,
result: []nagios.PerformanceData{
{
Label: "time",
Value: "49",
UnitOfMeasurement: "ms",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
},
},
"Single quoted time metric label with one trailing semicolon separator": {
input: `'time'=49ms;`,
result: []nagios.PerformanceData{
{
Label: "time",
Value: "49",
UnitOfMeasurement: "ms",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
},
},
"Single quoted time metric label without semicolon separators": {
input: `'time'=49ms`,
result: []nagios.PerformanceData{
{
Label: "time",
Value: "49",
UnitOfMeasurement: "ms",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
},
},
"Disk usage labels single quoted": {
input: `'/'=7826MB;28621;30211;0;31802 '/dev/shm'=0MB;3542;3739;0;3936 '/boot'=40MB;428;452;0;476`,
result: []nagios.PerformanceData{
{
Label: "/",
Value: "7826",
UnitOfMeasurement: "MB",
Warn: "28621",
Crit: "30211",
Min: "0",
Max: "31802",
},
{
Label: "/dev/shm",
Value: "0",
UnitOfMeasurement: "MB",
Warn: "3542",
Crit: "3739",
Min: "0",
Max: "3936",
},
{
Label: "/boot",
Value: "40",
UnitOfMeasurement: "MB",
Warn: "428",
Crit: "452",
Min: "0",
Max: "476",
},
},
},
"Disk usage unquoted": {
input: `/=7826MB;28621;30211;0;31802 /dev/shm=0MB;3542;3739;0;3936 /boot=40MB;428;452;0;476`,
result: []nagios.PerformanceData{
{
Label: "/",
Value: "7826",
UnitOfMeasurement: "MB",
Warn: "28621",
Crit: "30211",
Min: "0",
Max: "31802",
},
{
Label: "/dev/shm",
Value: "0",
UnitOfMeasurement: "MB",
Warn: "3542",
Crit: "3739",
Min: "0",
Max: "3936",
},
{
Label: "/boot",
Value: "40",
UnitOfMeasurement: "MB",
Warn: "428",
Crit: "452",
Min: "0",
Max: "476",
},
},
},
"Processes unquoted": {
input: `procs=7307;450;600;0;`,
result: []nagios.PerformanceData{
{
Label: "procs",
Value: "7307",
UnitOfMeasurement: "",
Warn: "450",
Crit: "600",
Min: "0",
Max: "",
},
},
},
"VMware Snapshots Age single quoted with all semicolon separators": {
input: `'critical_snapshots'=1;;;; 'resource_pools_evaluated'=29;;;; 'resource_pools_excluded'=0;;;; 'resource_pools_included'=0;;;; 'snapshots'=11;;;; 'time'=1720ms;;;; 'vms'=495;;;; 'vms_with_critical_snapshots'=1;;;; 'vms_with_warning_snapshots'=0;;;; 'warning_snapshots'=0;;;;`,
result: []nagios.PerformanceData{
{
Label: "critical_snapshots",
Value: "1",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "resource_pools_evaluated",
Value: "29",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "resource_pools_excluded",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "resource_pools_included",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "snapshots",
Value: "11",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "time",
Value: "1720",
UnitOfMeasurement: "ms",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "vms",
Value: "495",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "vms_with_critical_snapshots",
Value: "1",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "vms_with_warning_snapshots",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "warning_snapshots",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
},
},
"All Statuspage components single quoted with all semicolon separators": {
// NOTE: While the specific values from this test case are off
// (components in a warning state compared to all problem
// components), the metrics collection is still in a valid format.
input: `'all_component_groups'=13;;;; 'all_components'=333;;;; 'all_components_critical'=0;;;; 'all_components_ok'=326;;;; 'all_components_unknown'=0;;;; 'all_components_warning'=7;;;; 'all_problem_components'=4;;;; 'excluded_problem_components'=0;;;; 'remaining_components_critical'=0;;;; 'remaining_components_ok'=326;;;; 'remaining_components_unknown'=0;;;; 'remaining_components_warning'=7;;;; 'remaining_problem_components'=4;;;; 'time'=283ms;;;;`,
result: []nagios.PerformanceData{
{
Label: "all_component_groups",
Value: "13",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "all_components",
Value: "333",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "all_components_critical",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "all_components_ok",
Value: "326",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "all_components_unknown",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "all_components_warning",
Value: "7",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "all_problem_components",
Value: "4",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "excluded_problem_components",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "remaining_components_critical",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "remaining_components_ok",
Value: "326",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "remaining_components_unknown",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "remaining_components_warning",
Value: "7",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "remaining_problem_components",
Value: "4",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "time",
Value: "283",
UnitOfMeasurement: "ms",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
},
},
"check_cert plugin metrics single quoted with all semicolon separators": {
input: `'certs_present_intermediate'=2;;;; 'certs_present_leaf'=1;;;; 'certs_present_root'=0;;;; 'certs_present_unknown'=0;;;; 'expires_intermediate'=1703d;30;15;; 'expires_leaf'=62d;30;15;; 'time'=41ms;;;;`,
result: []nagios.PerformanceData{
{
Label: "certs_present_intermediate",
Value: "2",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "certs_present_leaf",
Value: "1",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "certs_present_root",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "certs_present_unknown",
Value: "0",
UnitOfMeasurement: "",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "expires_intermediate",
Value: "1703",
UnitOfMeasurement: "d",
Warn: "30",
Crit: "15",
Min: "",
Max: "",
},
{
Label: "expires_leaf",
Value: "62",
UnitOfMeasurement: "d",
Warn: "30",
Crit: "15",
Min: "",
Max: "",
},
{
Label: "time",
Value: "41",
UnitOfMeasurement: "ms",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
},
},
"check_cert plugin lifetime metrics single quoted with all semicolon separators": {
input: `'life_remaining_intermediate'=48%;;;; 'life_remaining_leaf'=32%;;;;`,
result: []nagios.PerformanceData{
{
Label: "life_remaining_intermediate",
Value: "48",
UnitOfMeasurement: "%",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
{
Label: "life_remaining_leaf",
Value: "32",
UnitOfMeasurement: "%",
Warn: "",
Crit: "",
Min: "",
Max: "",
},
},
},
}
for name, tt := range tests {
// Guard against referencing the loop iterator variable directly.
//
// https://stackoverflow.com/questions/68559574/using-the-variable-on-range-scope-x-in-function-literal-scopelint
// https://github.com/golang/go/wiki/CommonMistakes#using-goroutines-on-loop-iterator-variables
tt := tt
t.Run(name, func(t *testing.T) {
t.Logf("Evaluating input %q", tt.input)
perfDataResults, err := nagios.ParsePerfData(tt.input)
if err != nil {
t.Fatalf("failed to parse perfdata input: %v", err)
}
t.Logf("perfDataResults: %v", perfDataResults)
testParsePerfDataCollection(t, perfDataResults, tt.result)
})
}
}
func testParsePerfDataCollection(
t *testing.T,
expected []nagios.PerformanceData,
results []nagios.PerformanceData,
) {
t.Helper()
// Start with asserting that the perfdata metrics count is as expected
// before performing more specific checks.
switch {
case len(results) != len(expected):
want := len(expected)
got := len(results)
t.Fatalf(
"\nwant %d perfdata metrics from input"+
"\ngot %d perfdata metrics from input", want, got,
)
default:
got := len(results)
t.Logf("OK: got %d perfdata metrics from input", got)
}
// Since the parsed performance data metrics and the expected metrics
// collection are in the same order we use the index from looping through
// the parsed results to retrieve the expected result for comparison.
for i := range results {
want := expected[i]
got := results[i]
switch d := cmp.Diff(want, got); {
case d != "":
t.Errorf("ERROR: Parsed perfdata result does not match expected result")
t.Errorf("(-want, +got)\n:%s", d)
default:
t.Logf("OK: Parsed perfdata result matches expected result")
t.Log(got.String())
}
}
}