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redis_test.go
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redis_test.go
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package redis
import (
"bufio"
"fmt"
"strings"
"testing"
"time"
"github.com/go-redis/redis"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type testClient struct {
}
func (t *testClient) BaseTags() map[string]string {
return map[string]string{"host": "redis.net"}
}
func (t *testClient) Info() *redis.StringCmd {
return nil
}
func (t *testClient) Do(returnType string, args ...interface{}) (interface{}, error) {
return 2, nil
}
func TestRedisConnectIntegration(t *testing.T) {
if testing.Short() {
t.Skip("Skipping integration test in short mode")
}
addr := fmt.Sprintf(testutil.GetLocalHost() + ":6379")
r := &Redis{
Log: testutil.Logger{},
Servers: []string{addr},
}
var acc testutil.Accumulator
err := acc.GatherError(r.Gather)
require.NoError(t, err)
}
func TestRedis_Commands(t *testing.T) {
const redisListKey = "test-list-length"
var acc testutil.Accumulator
tc := &testClient{}
rc := &RedisCommand{
Command: []interface{}{"llen", "test-list"},
Field: redisListKey,
Type: "integer",
}
r := &Redis{
Commands: []*RedisCommand{rc},
clients: []Client{tc},
}
err := r.gatherCommandValues(tc, &acc)
require.NoError(t, err)
fields := map[string]interface{}{
redisListKey: 2,
}
acc.AssertContainsFields(t, "redis_commands", fields)
}
func TestRedis_ParseMetrics(t *testing.T) {
var acc testutil.Accumulator
tags := map[string]string{"host": "redis.net"}
rdr := bufio.NewReader(strings.NewReader(testOutput))
err := gatherInfoOutput(rdr, &acc, tags)
require.NoError(t, err)
tags = map[string]string{"host": "redis.net", "replication_role": "master"}
fields := map[string]interface{}{
"uptime": int64(238),
"lru_clock": int64(2364819),
"clients": int64(1),
"client_longest_output_list": int64(0),
"client_biggest_input_buf": int64(0),
"blocked_clients": int64(0),
"used_memory": int64(1003936),
"used_memory_rss": int64(811008),
"used_memory_peak": int64(1003936),
"used_memory_lua": int64(33792),
"used_memory_peak_perc": float64(93.58),
"used_memory_dataset_perc": float64(20.27),
"mem_fragmentation_ratio": float64(0.81),
"loading": int64(0),
"rdb_changes_since_last_save": int64(0),
"rdb_bgsave_in_progress": int64(0),
"rdb_last_save_time": int64(1428427941),
"rdb_last_bgsave_status": "ok",
"rdb_last_bgsave_time_sec": int64(-1),
"rdb_current_bgsave_time_sec": int64(-1),
"aof_enabled": int64(0),
"aof_rewrite_in_progress": int64(0),
"aof_rewrite_scheduled": int64(0),
"aof_last_rewrite_time_sec": int64(-1),
"aof_current_rewrite_time_sec": int64(-1),
"aof_last_bgrewrite_status": "ok",
"aof_last_write_status": "ok",
"total_connections_received": int64(2),
"total_commands_processed": int64(1),
"instantaneous_ops_per_sec": int64(0),
"instantaneous_input_kbps": float64(876.16),
"instantaneous_output_kbps": float64(3010.23),
"rejected_connections": int64(0),
"sync_full": int64(0),
"sync_partial_ok": int64(0),
"sync_partial_err": int64(0),
"expired_keys": int64(0),
"evicted_keys": int64(0),
"keyspace_hits": int64(1),
"keyspace_misses": int64(1),
"pubsub_channels": int64(0),
"pubsub_patterns": int64(0),
"latest_fork_usec": int64(0),
"connected_slaves": int64(2),
"master_repl_offset": int64(0),
"repl_backlog_active": int64(0),
"repl_backlog_size": int64(1048576),
"repl_backlog_first_byte_offset": int64(0),
"repl_backlog_histlen": int64(0),
"second_repl_offset": int64(-1),
"used_cpu_sys": float64(0.14),
"used_cpu_user": float64(0.05),
"used_cpu_sys_children": float64(0.00),
"used_cpu_user_children": float64(0.00),
"keyspace_hitrate": float64(0.50),
"redis_version": "6.0.9",
"active_defrag_hits": int64(0),
"active_defrag_key_hits": int64(0),
"active_defrag_key_misses": int64(0),
"active_defrag_misses": int64(0),
"active_defrag_running": int64(0),
"allocator_active": int64(1022976),
"allocator_allocated": int64(1019632),
"allocator_frag_bytes": float64(3344),
"allocator_frag_ratio": float64(1.00),
"allocator_resident": int64(1022976),
"allocator_rss_bytes": int64(0),
"allocator_rss_ratio": float64(1.00),
"aof_last_cow_size": int64(0),
"client_recent_max_input_buffer": int64(16),
"client_recent_max_output_buffer": int64(0),
"clients_in_timeout_table": int64(0),
"cluster_enabled": int64(0),
"expire_cycle_cpu_milliseconds": int64(669),
"expired_stale_perc": float64(0.00),
"expired_time_cap_reached_count": int64(0),
"io_threaded_reads_processed": int64(0),
"io_threaded_writes_processed": int64(0),
"total_reads_processed": int64(31),
"total_writes_processed": int64(17),
"lazyfree_pending_objects": int64(0),
"maxmemory": int64(0),
"maxmemory_policy": string("noeviction"),
"mem_aof_buffer": int64(0),
"mem_clients_normal": int64(17440),
"mem_clients_slaves": int64(0),
"mem_fragmentation_bytes": int64(41232),
"mem_not_counted_for_evict": int64(0),
"mem_replication_backlog": int64(0),
"rss_overhead_bytes": int64(37888),
"rss_overhead_ratio": float64(1.04),
"total_system_memory": int64(17179869184),
"used_memory_dataset": int64(47088),
"used_memory_overhead": int64(1019152),
"used_memory_scripts": int64(0),
"used_memory_startup": int64(1001712),
"migrate_cached_sockets": int64(0),
"module_fork_in_progress": int64(0),
"module_fork_last_cow_size": int64(0),
"number_of_cached_scripts": int64(0),
"rdb_last_cow_size": int64(0),
"slave_expires_tracked_keys": int64(0),
"unexpected_error_replies": int64(0),
"total_net_input_bytes": int64(381),
"total_net_output_bytes": int64(71521),
"tracking_clients": int64(0),
"tracking_total_items": int64(0),
"tracking_total_keys": int64(0),
"tracking_total_prefixes": int64(0),
}
// We have to test rdb_last_save_time_offset manually because the value is based on the time when gathered
for _, m := range acc.Metrics {
for k, v := range m.Fields {
if k == "rdb_last_save_time_elapsed" {
fields[k] = v
}
}
}
assert.InDelta(t,
time.Now().Unix()-fields["rdb_last_save_time"].(int64),
fields["rdb_last_save_time_elapsed"].(int64),
2) // allow for 2 seconds worth of offset
keyspaceTags := map[string]string{"host": "redis.net", "replication_role": "master", "database": "db0"}
keyspaceFields := map[string]interface{}{
"avg_ttl": int64(0),
"expires": int64(0),
"keys": int64(2),
}
acc.AssertContainsTaggedFields(t, "redis", fields, tags)
acc.AssertContainsTaggedFields(t, "redis_keyspace", keyspaceFields, keyspaceTags)
cmdstatSetTags := map[string]string{"host": "redis.net", "replication_role": "master", "command": "set"}
cmdstatSetFields := map[string]interface{}{
"calls": int64(261265),
"usec": int64(1634157),
"usec_per_call": float64(6.25),
}
acc.AssertContainsTaggedFields(t, "redis_cmdstat", cmdstatSetFields, cmdstatSetTags)
cmdstatCommandTags := map[string]string{"host": "redis.net", "replication_role": "master", "command": "command"}
cmdstatCommandFields := map[string]interface{}{
"calls": int64(1),
"usec": int64(990),
"usec_per_call": float64(990.0),
}
acc.AssertContainsTaggedFields(t, "redis_cmdstat", cmdstatCommandFields, cmdstatCommandTags)
replicationTags := map[string]string{
"host": "redis.net",
"replication_role": "slave",
"replica_id": "0",
"replica_ip": "127.0.0.1",
"replica_port": "7379",
"state": "online",
}
replicationFields := map[string]interface{}{
"lag": int64(0),
"offset": int64(4556468),
}
acc.AssertContainsTaggedFields(t, "redis_replication", replicationFields, replicationTags)
replicationTags = map[string]string{
"host": "redis.net",
"replication_role": "slave",
"replica_id": "1",
"replica_ip": "127.0.0.1",
"replica_port": "8379",
"state": "send_bulk",
}
replicationFields = map[string]interface{}{
"lag": int64(1),
"offset": int64(0),
}
acc.AssertContainsTaggedFields(t, "redis_replication", replicationFields, replicationTags)
}
func TestRedis_ParseFloatOnInts(t *testing.T) {
var acc testutil.Accumulator
tags := map[string]string{"host": "redis.net"}
rdr := bufio.NewReader(strings.NewReader(strings.Replace(testOutput, "mem_fragmentation_ratio:0.81", "mem_fragmentation_ratio:1", 1)))
err := gatherInfoOutput(rdr, &acc, tags)
require.NoError(t, err)
var m *testutil.Metric
for i := range acc.Metrics {
if _, ok := acc.Metrics[i].Fields["mem_fragmentation_ratio"]; ok {
m = acc.Metrics[i]
break
}
}
require.NotNil(t, m)
fragRatio, ok := m.Fields["mem_fragmentation_ratio"]
require.True(t, ok)
require.IsType(t, float64(0.0), fragRatio)
}
func TestRedis_ParseIntOnFloats(t *testing.T) {
var acc testutil.Accumulator
tags := map[string]string{"host": "redis.net"}
rdr := bufio.NewReader(strings.NewReader(strings.Replace(testOutput, "clients_in_timeout_table:0", "clients_in_timeout_table:0.0", 1)))
err := gatherInfoOutput(rdr, &acc, tags)
require.NoError(t, err)
var m *testutil.Metric
for i := range acc.Metrics {
if _, ok := acc.Metrics[i].Fields["clients_in_timeout_table"]; ok {
m = acc.Metrics[i]
break
}
}
require.NotNil(t, m)
clientsInTimeout, ok := m.Fields["clients_in_timeout_table"]
require.True(t, ok)
require.IsType(t, int64(0), clientsInTimeout)
}
func TestRedis_ParseStringOnInts(t *testing.T) {
var acc testutil.Accumulator
tags := map[string]string{"host": "redis.net"}
rdr := bufio.NewReader(strings.NewReader(strings.Replace(testOutput, "maxmemory_policy:no-eviction", "maxmemory_policy:1", 1)))
err := gatherInfoOutput(rdr, &acc, tags)
require.NoError(t, err)
var m *testutil.Metric
for i := range acc.Metrics {
if _, ok := acc.Metrics[i].Fields["maxmemory_policy"]; ok {
m = acc.Metrics[i]
break
}
}
require.NotNil(t, m)
maxmemoryPolicy, ok := m.Fields["maxmemory_policy"]
require.True(t, ok)
require.IsType(t, string(""), maxmemoryPolicy)
}
func TestRedis_ParseIntOnString(t *testing.T) {
var acc testutil.Accumulator
tags := map[string]string{"host": "redis.net"}
rdr := bufio.NewReader(strings.NewReader(strings.Replace(testOutput, "clients_in_timeout_table:0", `clients_in_timeout_table:""`, 1)))
err := gatherInfoOutput(rdr, &acc, tags)
require.NoError(t, err)
var m *testutil.Metric
for i := range acc.Metrics {
if _, ok := acc.Metrics[i].Fields["clients_in_timeout_table"]; ok {
m = acc.Metrics[i]
break
}
}
require.NotNil(t, m)
clientsInTimeout, ok := m.Fields["clients_in_timeout_table"]
require.True(t, ok)
require.IsType(t, int64(0), clientsInTimeout)
}
const testOutput = `# Server
redis_version:6.0.9
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:26c3229b35eb3beb
redis_mode:standalone
os:Darwin 19.6.0 x86_64
arch_bits:64
multiplexing_api:kqueue
atomicvar_api:atomic-builtin
gcc_version:4.2.1
process_id:46677
run_id:5d6bf38087b23e48f1a59b7aca52e2b55438b02f
tcp_port:6379
uptime_in_seconds:238
uptime_in_days:0
hz:10
configured_hz:10
lru_clock:2364819
executable:/usr/local/opt/redis/bin/redis-server
config_file:/usr/local/etc/redis.conf
io_threads_active:0
# Clients
client_recent_max_input_buffer:16
client_recent_max_output_buffer:0
tracking_clients:0
clients_in_timeout_table:0
connected_clients:1
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0
# Memory
used_memory:1003936
used_memory_human:980.41K
used_memory_rss:811008
used_memory_rss_human:1.01M
used_memory_peak:1003936
used_memory_peak_human:980.41K
used_memory_peak_perc:93.58%
used_memory_overhead:1019152
used_memory_startup:1001712
used_memory_dataset:47088
used_memory_dataset_perc:20.27%
allocator_allocated:1019632
allocator_active:1022976
allocator_resident:1022976
total_system_memory:17179869184
total_system_memory_human:16.00G
used_memory_lua:33792
used_memory_lua_human:37.00K
used_memory_scripts:0
used_memory_scripts_human:0B
number_of_cached_scripts:0
maxmemory:0
maxmemory_human:0B
maxmemory_policy:noeviction
allocator_frag_ratio:1.00
allocator_frag_bytes:3344
allocator_rss_ratio:1.00
allocator_rss_bytes:0
rss_overhead_ratio:1.04
rss_overhead_bytes:37888
mem_fragmentation_ratio:0.81
mem_fragmentation_bytes:41232
mem_not_counted_for_evict:0
mem_replication_backlog:0
mem_clients_slaves:0
mem_clients_normal:17440
mem_aof_buffer:0
mem_allocator:libc
active_defrag_running:0
lazyfree_pending_objects:0
# Persistence
loading:0
rdb_changes_since_last_save:0
rdb_bgsave_in_progress:0
rdb_last_save_time:1428427941
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
rdb_last_cow_size:0
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok
aof_last_cow_size:0
module_fork_in_progress:0
module_fork_last_cow_size:0
# Stats
total_connections_received:2
total_commands_processed:1
instantaneous_ops_per_sec:0
total_net_input_bytes:381
total_net_output_bytes:71521
instantaneous_input_kbps:876.16
instantaneous_output_kbps:3010.23
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:0
expired_stale_perc:0.00
expired_time_cap_reached_count:0
expire_cycle_cpu_milliseconds:669
evicted_keys:0
keyspace_hits:1
keyspace_misses:1
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0
migrate_cached_sockets:0
slave_expires_tracked_keys:0
active_defrag_hits:0
active_defrag_misses:0
active_defrag_key_hits:0
active_defrag_key_misses:0
tracking_total_keys:0
tracking_total_items:0
tracking_total_prefixes:0
unexpected_error_replies:0
total_reads_processed:31
total_writes_processed:17
io_threaded_reads_processed:0
io_threaded_writes_processed:0
# Replication
role:master
connected_slaves:2
slave0:ip=127.0.0.1,port=7379,state=online,offset=4556468,lag=0
slave1:ip=127.0.0.1,port=8379,state=send_bulk,offset=0,lag=1
master_replid:8c4d7b768b26826825ceb20ff4a2c7c54616350b
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:0
second_repl_offset:-1
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0
# CPU
used_cpu_sys:0.14
used_cpu_user:0.05
used_cpu_sys_children:0.00
used_cpu_user_children:0.00
# Cluster
cluster_enabled:0
# Commandstats
cmdstat_set:calls=261265,usec=1634157,usec_per_call=6.25
cmdstat_command:calls=1,usec=990,usec_per_call=990.00
# Keyspace
db0:keys=2,expires=0,avg_ttl=0
(error) ERR unknown command 'eof'`