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// SPDX-License-Identifier: GPL-3.0-or-later
package zookeeper
import (
"bufio"
"bytes"
"errors"
"os"
"testing"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var (
dataConfigJSON, _ = os.ReadFile("testdata/config.json")
dataConfigYAML, _ = os.ReadFile("testdata/config.yaml")
dataMntrMetrics, _ = os.ReadFile("testdata/mntr.txt")
dataMntrNotInWhiteListResponse, _ = os.ReadFile("testdata/mntr_notinwhitelist.txt")
)
func Test_testDataIsValid(t *testing.T) {
for name, data := range map[string][]byte{
"dataConfigJSON": dataConfigJSON,
"dataConfigYAML": dataConfigYAML,
"dataMntrMetrics": dataMntrMetrics,
"dataMntrNotInWhiteListResponse": dataMntrNotInWhiteListResponse,
} {
assert.NotNil(t, data, name)
}
}
func TestZookeeper_ConfigurationSerialize(t *testing.T) {
module.TestConfigurationSerialize(t, &Zookeeper{}, dataConfigJSON, dataConfigYAML)
}
func TestZookeeper_Init(t *testing.T) {
job := New()
assert.NoError(t, job.Init())
assert.NotNil(t, job.fetcher)
}
func TestZookeeper_InitErrorOnCreatingTLSConfig(t *testing.T) {
job := New()
job.UseTLS = true
job.TLSConfig.TLSCA = "testdata/tls"
assert.Error(t, job.Init())
}
func TestZookeeper_Check(t *testing.T) {
job := New()
require.NoError(t, job.Init())
job.fetcher = &mockZookeeperFetcher{data: dataMntrMetrics}
assert.NoError(t, job.Check())
}
func TestZookeeper_CheckErrorOnFetch(t *testing.T) {
job := New()
require.NoError(t, job.Init())
job.fetcher = &mockZookeeperFetcher{err: true}
assert.Error(t, job.Check())
}
func TestZookeeper_Charts(t *testing.T) {
assert.NotNil(t, New().Charts())
}
func TestZookeeper_Cleanup(t *testing.T) {
New().Cleanup()
}
func TestZookeeper_Collect(t *testing.T) {
job := New()
require.NoError(t, job.Init())
job.fetcher = &mockZookeeperFetcher{data: dataMntrMetrics}
expected := map[string]int64{
"approximate_data_size": 44,
"avg_latency": 100,
"ephemerals_count": 0,
"max_file_descriptor_count": 1048576,
"max_latency": 100,
"min_latency": 100,
"num_alive_connections": 1,
"open_file_descriptor_count": 63,
"outstanding_requests": 0,
"packets_received": 92,
"packets_sent": 182,
"server_state": 4,
"watch_count": 0,
"znode_count": 5,
}
collected := job.Collect()
assert.Equal(t, expected, collected)
ensureCollectedHasAllChartsDimsVarsIDs(t, job, collected)
}
func TestZookeeper_CollectMntrNotInWhiteList(t *testing.T) {
job := New()
require.NoError(t, job.Init())
job.fetcher = &mockZookeeperFetcher{data: dataMntrNotInWhiteListResponse}
assert.Nil(t, job.Collect())
}
func TestZookeeper_CollectMntrEmptyResponse(t *testing.T) {
job := New()
require.NoError(t, job.Init())
job.fetcher = &mockZookeeperFetcher{}
assert.Nil(t, job.Collect())
}
func TestZookeeper_CollectMntrInvalidData(t *testing.T) {
job := New()
require.NoError(t, job.Init())
job.fetcher = &mockZookeeperFetcher{data: []byte("hello \nand good buy\n")}
assert.Nil(t, job.Collect())
}
func TestZookeeper_CollectMntrReceiveError(t *testing.T) {
job := New()
require.NoError(t, job.Init())
job.fetcher = &mockZookeeperFetcher{err: true}
assert.Nil(t, job.Collect())
}
func ensureCollectedHasAllChartsDimsVarsIDs(t *testing.T, zk *Zookeeper, collected map[string]int64) {
for _, chart := range *zk.Charts() {
if chart.Obsolete {
continue
}
for _, dim := range chart.Dims {
_, ok := collected[dim.ID]
assert.Truef(t, ok, "collected metrics has no data for dim '%s' chart '%s'", dim.ID, chart.ID)
}
for _, v := range chart.Vars {
_, ok := collected[v.ID]
assert.Truef(t, ok, "collected metrics has no data for var '%s' chart '%s'", v.ID, chart.ID)
}
}
}
type mockZookeeperFetcher struct {
data []byte
err bool
}
func (m mockZookeeperFetcher) fetch(_ string) ([]string, error) {
if m.err {
return nil, errors.New("mock fetch error")
}
var lines []string
s := bufio.NewScanner(bytes.NewReader(m.data))
for s.Scan() {
if !isZKLine(s.Bytes()) || isMntrLineOK(s.Bytes()) {
lines = append(lines, s.Text())
}
}
return lines, nil
}
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