package system
import (
"fmt"
"reflect"
"testing"
"github.com/influxdb/telegraf/testutil"
"github.com/shirou/gopsutil/cpu"
"github.com/shirou/gopsutil/disk"
"github.com/shirou/gopsutil/mem"
"github.com/shirou/gopsutil/net"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestSystemStats_GenerateStats(t *testing.T) {
var mps MockPS
defer mps.AssertExpectations(t)
var acc testutil.Accumulator
cts := cpu.CPUTimesStat{
CPU: "cpu0",
User: 3.1,
System: 8.2,
Idle: 80.1,
Nice: 1.3,
Iowait: 0.2,
Irq: 0.1,
Softirq: 0.11,
Steal: 0.0511,
Guest: 8.1,
GuestNice: 0.324,
}
cts2 := cpu.CPUTimesStat{
CPU: "cpu0",
User: 11.4, // increased by 8.3
System: 10.9, // increased by 2.7
Idle: 158.8699, // increased by 78.7699 (for total increase of 100)
Nice: 2.5, // increased by 1.2
Iowait: 0.7, // increased by 0.5
Irq: 1.2, // increased by 1.1
Softirq: 0.31, // increased by 0.2
Steal: 0.2812, // increased by 0.0001
Guest: 12.9, // increased by 4.8
GuestNice: 2.524, // increased by 2.2
}
mps.On("CPUTimes").Return([]cpu.CPUTimesStat{cts}, nil)
du := &disk.DiskUsageStat{
Path: "/",
Fstype: "ext4",
Total: 128,
Free: 23,
InodesTotal: 1234,
InodesFree: 234,
}
mps.On("DiskUsage").Return([]*disk.DiskUsageStat{du}, nil)
diskio := disk.DiskIOCountersStat{
ReadCount: 888,
WriteCount: 5341,
ReadBytes: 100000,
WriteBytes: 200000,
ReadTime: 7123,
WriteTime: 9087,
Name: "sda1",
IoTime: 123552,
SerialNumber: "ab-123-ad",
}
mps.On("DiskIO").Return(map[string]disk.DiskIOCountersStat{"sda1": diskio}, nil)
netio := net.NetIOCountersStat{
Name: "eth0",
BytesSent: 1123,
BytesRecv: 8734422,
PacketsSent: 781,
PacketsRecv: 23456,
Errin: 832,
Errout: 8,
Dropin: 7,
Dropout: 1,
}
mps.On("NetIO").Return([]net.NetIOCountersStat{netio}, nil)
vms := &mem.VirtualMemoryStat{
Total: 12400,
Available: 7600,
Used: 5000,
Free: 1235,
// Active: 8134,
// Inactive: 1124,
// Buffers: 771,
// Cached: 4312,
// Wired: 134,
// Shared: 2142,
}
mps.On("VMStat").Return(vms, nil)
sms := &mem.SwapMemoryStat{
Total: 8123,
Used: 1232,
Free: 6412,
UsedPercent: 12.2,
Sin: 7,
Sout: 830,
}
mps.On("SwapStat").Return(sms, nil)
cs := NewCPUStats(&mps)
cputags := map[string]string{
"cpu": "cpu0",
}
preCPUPoints := len(acc.Points)
err := cs.Gather(&acc)
require.NoError(t, err)
numCPUPoints := len(acc.Points) - preCPUPoints
expectedCPUPoints := 10
assert.Equal(t, numCPUPoints, expectedCPUPoints)
// Computed values are checked with delta > 0 becasue of floating point arithmatic
// imprecision
assertContainsTaggedFloat(t, acc, "time_user", 3.1, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_system", 8.2, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_idle", 80.1, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_nice", 1.3, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_iowait", 0.2, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_irq", 0.1, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_softirq", 0.11, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_steal", 0.0511, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_guest", 8.1, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_guest_nice", 0.324, 0, cputags)
mps2 := MockPS{}
mps2.On("CPUTimes").Return([]cpu.CPUTimesStat{cts2}, nil)
cs.ps = &mps2
// Should have added cpu percentages too
err = cs.Gather(&acc)
require.NoError(t, err)
numCPUPoints = len(acc.Points) - (preCPUPoints + numCPUPoints)
expectedCPUPoints = 20
assert.Equal(t, numCPUPoints, expectedCPUPoints)
assertContainsTaggedFloat(t, acc, "time_user", 11.4, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_system", 10.9, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_idle", 158.8699, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_nice", 2.5, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_iowait", 0.7, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_irq", 1.2, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_softirq", 0.31, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_steal", 0.2812, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_guest", 12.9, 0, cputags)
assertContainsTaggedFloat(t, acc, "time_guest_nice", 2.524, 0, cputags)
assertContainsTaggedFloat(t, acc, "usage_user", 8.3, 0.0005, cputags)
assertContainsTaggedFloat(t, acc, "usage_system", 2.7, 0.0005, cputags)
assertContainsTaggedFloat(t, acc, "usage_idle", 78.7699, 0.0005, cputags)
assertContainsTaggedFloat(t, acc, "usage_nice", 1.2, 0.0005, cputags)
assertContainsTaggedFloat(t, acc, "usage_iowait", 0.5, 0.0005, cputags)
assertContainsTaggedFloat(t, acc, "usage_irq", 1.1, 0.0005, cputags)
assertContainsTaggedFloat(t, acc, "usage_softirq", 0.2, 0.0005, cputags)
assertContainsTaggedFloat(t, acc, "usage_steal", 0.2301, 0.0005, cputags)
assertContainsTaggedFloat(t, acc, "usage_guest", 4.8, 0.0005, cputags)
assertContainsTaggedFloat(t, acc, "usage_guest_nice", 2.2, 0.0005, cputags)
err = (&DiskStats{&mps}).Gather(&acc)
require.NoError(t, err)
tags := map[string]string{
"path": "/",
"fstype": "ext4",
}
assert.True(t, acc.CheckTaggedValue("total", uint64(128), tags))
assert.True(t, acc.CheckTaggedValue("used", uint64(105), tags))
assert.True(t, acc.CheckTaggedValue("free", uint64(23), tags))
assert.True(t, acc.CheckTaggedValue("inodes_total", uint64(1234), tags))
assert.True(t, acc.CheckTaggedValue("inodes_free", uint64(234), tags))
assert.True(t, acc.CheckTaggedValue("inodes_used", uint64(1000), tags))
err = (&NetIOStats{ps: &mps, skipChecks: true}).Gather(&acc)
require.NoError(t, err)
ntags := map[string]string{
"interface": "eth0",
}
assert.NoError(t, acc.ValidateTaggedValue("bytes_sent", uint64(1123), ntags))
assert.NoError(t, acc.ValidateTaggedValue("bytes_recv", uint64(8734422), ntags))
assert.NoError(t, acc.ValidateTaggedValue("packets_sent", uint64(781), ntags))
assert.NoError(t, acc.ValidateTaggedValue("packets_recv", uint64(23456), ntags))
assert.NoError(t, acc.ValidateTaggedValue("err_in", uint64(832), ntags))
assert.NoError(t, acc.ValidateTaggedValue("err_out", uint64(8), ntags))
assert.NoError(t, acc.ValidateTaggedValue("drop_in", uint64(7), ntags))
assert.NoError(t, acc.ValidateTaggedValue("drop_out", uint64(1), ntags))
err = (&DiskIOStats{&mps}).Gather(&acc)
require.NoError(t, err)
dtags := map[string]string{
"name": "sda1",
"serial": "ab-123-ad",
}
assert.True(t, acc.CheckTaggedValue("reads", uint64(888), dtags))
assert.True(t, acc.CheckTaggedValue("writes", uint64(5341), dtags))
assert.True(t, acc.CheckTaggedValue("read_bytes", uint64(100000), dtags))
assert.True(t, acc.CheckTaggedValue("write_bytes", uint64(200000), dtags))
assert.True(t, acc.CheckTaggedValue("read_time", uint64(7123), dtags))
assert.True(t, acc.CheckTaggedValue("write_time", uint64(9087), dtags))
assert.True(t, acc.CheckTaggedValue("io_time", uint64(123552), dtags))
err = (&MemStats{&mps}).Gather(&acc)
require.NoError(t, err)
vmtags := map[string]string(nil)
assert.True(t, acc.CheckTaggedValue("total", uint64(12400), vmtags))
assert.True(t, acc.CheckTaggedValue("available", uint64(7600), vmtags))
assert.True(t, acc.CheckTaggedValue("used", uint64(5000), vmtags))
assert.True(t, acc.CheckTaggedValue("available_percent",
float64(7600)/float64(12400)*100,
vmtags))
assert.True(t, acc.CheckTaggedValue("used_percent",
float64(5000)/float64(12400)*100,
vmtags))
assert.True(t, acc.CheckTaggedValue("free", uint64(1235), vmtags))
acc.Points = nil
err = (&SwapStats{&mps}).Gather(&acc)
require.NoError(t, err)
swaptags := map[string]string(nil)
assert.NoError(t, acc.ValidateTaggedValue("total", uint64(8123), swaptags))
assert.NoError(t, acc.ValidateTaggedValue("used", uint64(1232), swaptags))
assert.NoError(t, acc.ValidateTaggedValue("used_percent", float64(12.2), swaptags))
assert.NoError(t, acc.ValidateTaggedValue("free", uint64(6412), swaptags))
assert.NoError(t, acc.ValidateTaggedValue("in", uint64(7), swaptags))
assert.NoError(t, acc.ValidateTaggedValue("out", uint64(830), swaptags))
}
// Asserts that a given accumulator contains a measurment of type float64 with
// specific tags within a certain distance of a given expected value. Asserts a failure
// if the measurement is of the wrong type, or if no matching measurements are found
//
// Paramaters:
// t *testing.T : Testing object to use
// acc testutil.Accumulator: Accumulator to examine
// measurement string : Name of the measurement to examine
// expectedValue float64 : Value to search for within the measurement
// delta float64 : Maximum acceptable distance of an accumulated value
// from the expectedValue parameter. Useful when
// floating-point arithmatic imprecision makes looking
// for an exact match impractical
// tags map[string]string : Tag set the found measurement must have. Set to nil to
// ignore the tag set.
func assertContainsTaggedFloat(
t *testing.T,
acc testutil.Accumulator,
measurement string,
expectedValue float64,
delta float64,
tags map[string]string,
) {
var actualValue float64
for _, pt := range acc.Points {
if pt.Measurement == measurement {
if (tags == nil) || reflect.DeepEqual(pt.Tags, tags) {
if value, ok := pt.Values["value"].(float64); ok {
actualValue = value
if (value >= expectedValue-delta) && (value <= expectedValue+delta) {
// Found the point, return without failing
return
}
} else {
assert.Fail(t, fmt.Sprintf("Measurement \"%s\" does not have type float64",
measurement))
}
}
}
}
msg := fmt.Sprintf("Could not find measurement \"%s\" with requested tags within %f of %f, Actual: %f",
measurement, delta, expectedValue, actualValue)
assert.Fail(t, msg)
}