telegraf/plugins/statsd/statsd_test.go

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package statsd
import (
"errors"
"fmt"
"testing"
"github.com/influxdb/telegraf/testutil"
)
// Invalid lines should return an error
func TestParse_InvalidLines(t *testing.T) {
s := NewStatsd()
invalid_lines := []string{
"i.dont.have.a.pipe:45g",
"i.dont.have.a.colon45|c",
"invalid.metric.type:45|e",
"invalid.plus.minus.non.gauge:+10|c",
"invalid.plus.minus.non.gauge:+10|s",
"invalid.plus.minus.non.gauge:+10|ms",
"invalid.plus.minus.non.gauge:+10|h",
"invalid.plus.minus.non.gauge:-10|c",
"invalid.value:foobar|c",
"invalid.value:d11|c",
"invalid.value:1d1|c",
}
for _, line := range invalid_lines {
err := s.parseStatsdLine(line)
if err == nil {
t.Errorf("Parsing line %s should have resulted in an error\n", line)
}
}
}
// Invalid sample rates should be ignored and not applied
func TestParse_InvalidSampleRate(t *testing.T) {
s := NewStatsd()
invalid_lines := []string{
"invalid.sample.rate:45|c|0.1",
"invalid.sample.rate.2:45|c|@foo",
"invalid.sample.rate:45|g|@0.1",
"invalid.sample.rate:45|s|@0.1",
}
for _, line := range invalid_lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
counter_validations := []struct {
name string
value int64
cache map[string]cachedcounter
}{
{
"invalid_sample_rate",
45,
s.counters,
},
{
"invalid_sample_rate_2",
45,
s.counters,
},
}
for _, test := range counter_validations {
err := test_validate_counter(test.name, test.value, test.cache)
if err != nil {
t.Error(err.Error())
}
}
err := test_validate_gauge("invalid_sample_rate", 45, s.gauges)
if err != nil {
t.Error(err.Error())
}
err = test_validate_set("invalid_sample_rate", 1, s.sets)
if err != nil {
t.Error(err.Error())
}
}
// Names should be parsed like . -> _ and - -> __
func TestParse_DefaultNameParsing(t *testing.T) {
s := NewStatsd()
valid_lines := []string{
"valid:1|c",
"valid.foo-bar:11|c",
}
for _, line := range valid_lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
validations := []struct {
name string
value int64
}{
{
"valid",
1,
},
{
"valid_foo__bar",
11,
},
}
for _, test := range validations {
err := test_validate_counter(test.name, test.value, s.counters)
if err != nil {
t.Error(err.Error())
}
}
}
// Test that template name transformation works
func TestParse_Template(t *testing.T) {
s := NewStatsd()
s.Templates = []string{
"measurement.measurement.host.service",
}
lines := []string{
"cpu.idle.localhost:1|c",
"cpu.busy.host01.myservice:11|c",
}
for _, line := range lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
validations := []struct {
name string
value int64
}{
{
"cpu_idle",
1,
},
{
"cpu_busy",
11,
},
}
// Validate counters
for _, test := range validations {
err := test_validate_counter(test.name, test.value, s.counters)
if err != nil {
t.Error(err.Error())
}
}
}
// Test that template filters properly
func TestParse_TemplateFilter(t *testing.T) {
s := NewStatsd()
s.Templates = []string{
"cpu.idle.* measurement.measurement.host",
}
lines := []string{
"cpu.idle.localhost:1|c",
"cpu.busy.host01.myservice:11|c",
}
for _, line := range lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
validations := []struct {
name string
value int64
}{
{
"cpu_idle",
1,
},
{
"cpu_busy_host01_myservice",
11,
},
}
// Validate counters
for _, test := range validations {
err := test_validate_counter(test.name, test.value, s.counters)
if err != nil {
t.Error(err.Error())
}
}
}
// Test that most specific template is chosen
func TestParse_TemplateSpecificity(t *testing.T) {
s := NewStatsd()
s.Templates = []string{
"cpu.* measurement.foo.host",
"cpu.idle.* measurement.measurement.host",
}
lines := []string{
"cpu.idle.localhost:1|c",
}
for _, line := range lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
validations := []struct {
name string
value int64
}{
{
"cpu_idle",
1,
},
}
// Validate counters
for _, test := range validations {
err := test_validate_counter(test.name, test.value, s.counters)
if err != nil {
t.Error(err.Error())
}
}
}
// Test that fields are parsed correctly
func TestParse_Fields(t *testing.T) {
if false {
t.Errorf("TODO")
}
}
// Test that tags within the bucket are parsed correctly
func TestParse_Tags(t *testing.T) {
s := NewStatsd()
tests := []struct {
bucket string
name string
tags map[string]string
}{
{
"cpu.idle,host=localhost",
"cpu_idle",
map[string]string{
"host": "localhost",
},
},
{
"cpu.idle,host=localhost,region=west",
"cpu_idle",
map[string]string{
"host": "localhost",
"region": "west",
},
},
{
"cpu.idle,host=localhost,color=red,region=west",
"cpu_idle",
map[string]string{
"host": "localhost",
"region": "west",
"color": "red",
},
},
}
for _, test := range tests {
name, tags := s.parseName(test.bucket)
if name != test.name {
t.Errorf("Expected: %s, got %s", test.name, name)
}
for k, v := range test.tags {
actual, ok := tags[k]
if !ok {
t.Errorf("Expected key: %s not found", k)
}
if actual != v {
t.Errorf("Expected %s, got %s", v, actual)
}
}
}
}
// Test that measurements with the same name, but different tags, are treated
// as different outputs
func TestParse_MeasurementsWithSameName(t *testing.T) {
s := NewStatsd()
// Test that counters work
valid_lines := []string{
"test.counter,host=localhost:1|c",
"test.counter,host=localhost,region=west:1|c",
}
for _, line := range valid_lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
if len(s.counters) != 2 {
t.Errorf("Expected 2 separate measurements, found %d", len(s.counters))
}
}
// Test that measurements with multiple bits, are treated as different outputs
// but are equal to their single-measurement representation
func TestParse_MeasurementsWithMultipleValues(t *testing.T) {
single_lines := []string{
"valid.multiple:0|ms|@0.1",
"valid.multiple:0|ms|",
"valid.multiple:1|ms",
"valid.multiple.duplicate:1|c",
"valid.multiple.duplicate:1|c",
"valid.multiple.duplicate:2|c",
"valid.multiple.duplicate:1|c",
"valid.multiple.duplicate:1|h",
"valid.multiple.duplicate:1|h",
"valid.multiple.duplicate:2|h",
"valid.multiple.duplicate:1|h",
"valid.multiple.duplicate:1|s",
"valid.multiple.duplicate:1|s",
"valid.multiple.duplicate:2|s",
"valid.multiple.duplicate:1|s",
"valid.multiple.duplicate:1|g",
"valid.multiple.duplicate:1|g",
"valid.multiple.duplicate:2|g",
"valid.multiple.duplicate:1|g",
"valid.multiple.mixed:1|c",
"valid.multiple.mixed:1|ms",
"valid.multiple.mixed:2|s",
"valid.multiple.mixed:1|g",
}
multiple_lines := []string{
"valid.multiple:0|ms|@0.1:0|ms|:1|ms",
"valid.multiple.duplicate:1|c:1|c:2|c:1|c",
"valid.multiple.duplicate:1|h:1|h:2|h:1|h",
"valid.multiple.duplicate:1|s:1|s:2|s:1|s",
"valid.multiple.duplicate:1|g:1|g:2|g:1|g",
"valid.multiple.mixed:1|c:1|ms:2|s:1|g",
}
s_single := NewStatsd()
s_multiple := NewStatsd()
for _, line := range single_lines {
err := s_single.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
for _, line := range multiple_lines {
err := s_multiple.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
if len(s_single.timings) != 3 {
t.Errorf("Expected 3 measurement, found %d", len(s_single.timings))
}
if cachedtiming, ok := s_single.timings["metric_type=timingvalid_multiple"]; !ok {
t.Errorf("Expected cached measurement with hash 'metric_type=timingvalid_multiple' not found")
} else {
if cachedtiming.name != "valid_multiple" {
t.Errorf("Expected the name to be 'valid_multiple', got %s", cachedtiming.name)
}
// A 0 at samplerate 0.1 will add 10 values of 0,
// A 0 with invalid samplerate will add a single 0,
// plus the last bit of value 1
// which adds up to 12 individual datapoints to be cached
if cachedtiming.stats.n != 12 {
t.Errorf("Expected 11 additions, got %d", cachedtiming.stats.n)
}
if cachedtiming.stats.upper != 1 {
t.Errorf("Expected max input to be 1, got %f", cachedtiming.stats.upper)
}
}
// test if s_single and s_multiple did compute the same stats for valid.multiple.duplicate
if err := test_validate_set("valid_multiple_duplicate", 2, s_single.sets); err != nil {
t.Error(err.Error())
}
if err := test_validate_set("valid_multiple_duplicate", 2, s_multiple.sets); err != nil {
t.Error(err.Error())
}
if err := test_validate_counter("valid_multiple_duplicate", 5, s_single.counters); err != nil {
t.Error(err.Error())
}
if err := test_validate_counter("valid_multiple_duplicate", 5, s_multiple.counters); err != nil {
t.Error(err.Error())
}
if err := test_validate_gauge("valid_multiple_duplicate", 1, s_single.gauges); err != nil {
t.Error(err.Error())
}
if err := test_validate_gauge("valid_multiple_duplicate", 1, s_multiple.gauges); err != nil {
t.Error(err.Error())
}
// test if s_single and s_multiple did compute the same stats for valid.multiple.mixed
if err := test_validate_set("valid_multiple_mixed", 1, s_single.sets); err != nil {
t.Error(err.Error())
}
if err := test_validate_set("valid_multiple_mixed", 1, s_multiple.sets); err != nil {
t.Error(err.Error())
}
if err := test_validate_counter("valid_multiple_mixed", 1, s_single.counters); err != nil {
t.Error(err.Error())
}
if err := test_validate_counter("valid_multiple_mixed", 1, s_multiple.counters); err != nil {
t.Error(err.Error())
}
if err := test_validate_gauge("valid_multiple_mixed", 1, s_single.gauges); err != nil {
t.Error(err.Error())
}
if err := test_validate_gauge("valid_multiple_mixed", 1, s_multiple.gauges); err != nil {
t.Error(err.Error())
}
}
// Valid lines should be parsed and their values should be cached
func TestParse_ValidLines(t *testing.T) {
s := NewStatsd()
valid_lines := []string{
"valid:45|c",
"valid:45|s",
"valid:45|g",
"valid.timer:45|ms",
"valid.timer:45|h",
}
for _, line := range valid_lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
}
// Tests low-level functionality of gauges
func TestParse_Gauges(t *testing.T) {
s := NewStatsd()
// Test that gauge +- values work
valid_lines := []string{
"plus.minus:100|g",
"plus.minus:-10|g",
"plus.minus:+30|g",
"plus.plus:100|g",
"plus.plus:+100|g",
"plus.plus:+100|g",
"minus.minus:100|g",
"minus.minus:-100|g",
"minus.minus:-100|g",
"lone.plus:+100|g",
"lone.minus:-100|g",
"overwrite:100|g",
"overwrite:300|g",
}
for _, line := range valid_lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
validations := []struct {
name string
value float64
}{
{
"plus_minus",
120,
},
{
"plus_plus",
300,
},
{
"minus_minus",
-100,
},
{
"lone_plus",
100,
},
{
"lone_minus",
-100,
},
{
"overwrite",
300,
},
}
for _, test := range validations {
err := test_validate_gauge(test.name, test.value, s.gauges)
if err != nil {
t.Error(err.Error())
}
}
}
// Tests low-level functionality of sets
func TestParse_Sets(t *testing.T) {
s := NewStatsd()
// Test that sets work
valid_lines := []string{
"unique.user.ids:100|s",
"unique.user.ids:100|s",
"unique.user.ids:100|s",
"unique.user.ids:100|s",
"unique.user.ids:100|s",
"unique.user.ids:101|s",
"unique.user.ids:102|s",
"unique.user.ids:102|s",
"unique.user.ids:123456789|s",
"oneuser.id:100|s",
"oneuser.id:100|s",
}
for _, line := range valid_lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
validations := []struct {
name string
value int64
}{
{
"unique_user_ids",
4,
},
{
"oneuser_id",
1,
},
}
for _, test := range validations {
err := test_validate_set(test.name, test.value, s.sets)
if err != nil {
t.Error(err.Error())
}
}
}
// Tests low-level functionality of counters
func TestParse_Counters(t *testing.T) {
s := NewStatsd()
// Test that counters work
valid_lines := []string{
"small.inc:1|c",
"big.inc:100|c",
"big.inc:1|c",
"big.inc:100000|c",
"big.inc:1000000|c",
"small.inc:1|c",
"zero.init:0|c",
"sample.rate:1|c|@0.1",
"sample.rate:1|c",
}
for _, line := range valid_lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
validations := []struct {
name string
value int64
}{
{
"small_inc",
2,
},
{
"big_inc",
1100101,
},
{
"zero_init",
0,
},
{
"sample_rate",
11,
},
}
for _, test := range validations {
err := test_validate_counter(test.name, test.value, s.counters)
if err != nil {
t.Error(err.Error())
}
}
}
// Tests low-level functionality of timings
func TestParse_Timings(t *testing.T) {
s := NewStatsd()
s.Percentiles = []int{90}
acc := &testutil.Accumulator{}
// Test that counters work
valid_lines := []string{
"test.timing:1|ms",
"test.timing:1|ms",
"test.timing:1|ms",
"test.timing:1|ms",
"test.timing:1|ms",
}
for _, line := range valid_lines {
err := s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
}
s.Gather(acc)
tests := []struct {
name string
value interface{}
}{
{
"test_timing_mean",
float64(1),
},
{
"test_timing_stddev",
float64(0),
},
{
"test_timing_upper",
float64(1),
},
{
"test_timing_lower",
float64(1),
},
{
"test_timing_count",
int64(5),
},
{
"test_timing_percentile_90",
float64(1),
},
}
for _, test := range tests {
acc.AssertContainsFields(t, test.name,
map[string]interface{}{"value": test.value})
}
}
func TestParse_Timings_Delete(t *testing.T) {
s := NewStatsd()
s.DeleteTimings = true
fakeacc := &testutil.Accumulator{}
var err error
line := "timing:100|ms"
err = s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
if len(s.timings) != 1 {
t.Errorf("Should be 1 timing, found %d", len(s.timings))
}
s.Gather(fakeacc)
if len(s.timings) != 0 {
t.Errorf("All timings should have been deleted, found %d", len(s.timings))
}
}
// Tests the delete_gauges option
func TestParse_Gauges_Delete(t *testing.T) {
s := NewStatsd()
s.DeleteGauges = true
fakeacc := &testutil.Accumulator{}
var err error
line := "current.users:100|g"
err = s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
err = test_validate_gauge("current_users", 100, s.gauges)
if err != nil {
t.Error(err.Error())
}
s.Gather(fakeacc)
err = test_validate_gauge("current_users", 100, s.gauges)
if err == nil {
t.Error("current_users_gauge metric should have been deleted")
}
}
// Tests the delete_sets option
func TestParse_Sets_Delete(t *testing.T) {
s := NewStatsd()
s.DeleteSets = true
fakeacc := &testutil.Accumulator{}
var err error
line := "unique.user.ids:100|s"
err = s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
err = test_validate_set("unique_user_ids", 1, s.sets)
if err != nil {
t.Error(err.Error())
}
s.Gather(fakeacc)
err = test_validate_set("unique_user_ids", 1, s.sets)
if err == nil {
t.Error("unique_user_ids_set metric should have been deleted")
}
}
// Tests the delete_counters option
func TestParse_Counters_Delete(t *testing.T) {
s := NewStatsd()
s.DeleteCounters = true
fakeacc := &testutil.Accumulator{}
var err error
line := "total.users:100|c"
err = s.parseStatsdLine(line)
if err != nil {
t.Errorf("Parsing line %s should not have resulted in an error\n", line)
}
err = test_validate_counter("total_users", 100, s.counters)
if err != nil {
t.Error(err.Error())
}
s.Gather(fakeacc)
err = test_validate_counter("total_users", 100, s.counters)
if err == nil {
t.Error("total_users_counter metric should have been deleted")
}
}
func TestParseKeyValue(t *testing.T) {
k, v := parseKeyValue("foo=bar")
if k != "foo" {
t.Errorf("Expected %s, got %s", "foo", k)
}
if v != "bar" {
t.Errorf("Expected %s, got %s", "bar", v)
}
k2, v2 := parseKeyValue("baz")
if k2 != "" {
t.Errorf("Expected %s, got %s", "", k2)
}
if v2 != "baz" {
t.Errorf("Expected %s, got %s", "baz", v2)
}
}
// Test utility functions
func test_validate_set(
name string,
value int64,
cache map[string]cachedset,
) error {
var metric cachedset
var found bool
for _, v := range cache {
if v.name == name {
metric = v
found = true
break
}
}
if !found {
return errors.New(fmt.Sprintf("Test Error: Metric name %s not found\n", name))
}
if value != int64(len(metric.set)) {
return errors.New(fmt.Sprintf("Measurement: %s, expected %d, actual %d\n",
name, value, len(metric.set)))
}
return nil
}
func test_validate_counter(
name string,
value int64,
cache map[string]cachedcounter,
) error {
var metric cachedcounter
var found bool
for _, v := range cache {
if v.name == name {
metric = v
found = true
break
}
}
if !found {
return errors.New(fmt.Sprintf("Test Error: Metric name %s not found\n", name))
}
if value != metric.value {
return errors.New(fmt.Sprintf("Measurement: %s, expected %d, actual %d\n",
name, value, metric.value))
}
return nil
}
func test_validate_gauge(
name string,
value float64,
cache map[string]cachedgauge,
) error {
var metric cachedgauge
var found bool
for _, v := range cache {
if v.name == name {
metric = v
found = true
break
}
}
if !found {
return errors.New(fmt.Sprintf("Test Error: Metric name %s not found\n", name))
}
if value != metric.value {
return errors.New(fmt.Sprintf("Measurement: %s, expected %f, actual %f\n",
name, value, metric.value))
}
return nil
}