telegraf/plugins/redis/redis_test.go

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package redis
import (
"bufio"
"fmt"
"net"
"testing"
"github.com/influxdb/telegraf/testutil"
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"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestRedisGeneratesMetrics(t *testing.T) {
l, err := net.Listen("tcp", ":0")
require.NoError(t, err)
defer l.Close()
go func() {
c, err := l.Accept()
if err != nil {
return
}
buf := bufio.NewReader(c)
for {
line, err := buf.ReadString('\n')
if err != nil {
return
}
if line != "info\n" {
return
}
fmt.Fprintf(c, "$%d\n", len(testOutput))
c.Write([]byte(testOutput))
}
}()
addr := fmt.Sprintf("redis://%s", l.Addr().String())
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r := &Redis{
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Servers: []string{addr},
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}
var acc testutil.Accumulator
err = r.Gather(&acc)
require.NoError(t, err)
checkInt := []struct {
name string
value uint64
}{
{"uptime", 238},
{"clients", 1},
{"used_memory", 1003936},
{"used_memory_rss", 811008},
{"used_memory_peak", 1003936},
{"used_memory_lua", 33792},
{"rdb_changes_since_last_save", 0},
{"total_connections_received", 2},
{"total_commands_processed", 1},
{"instantaneous_ops_per_sec", 0},
{"sync_full", 0},
{"sync_partial_ok", 0},
{"sync_partial_err", 0},
{"expired_keys", 0},
{"evicted_keys", 0},
{"keyspace_hits", 0},
{"keyspace_misses", 0},
{"pubsub_channels", 0},
{"pubsub_patterns", 0},
{"latest_fork_usec", 0},
{"connected_slaves", 0},
{"master_repl_offset", 0},
{"repl_backlog_active", 0},
{"repl_backlog_size", 1048576},
{"repl_backlog_histlen", 0},
}
for _, c := range checkInt {
assert.True(t, acc.CheckValue(c.name, c.value))
}
checkFloat := []struct {
name string
value float64
}{
{"mem_fragmentation_ratio", 0.81},
{"used_cpu_sys", 0.14},
{"used_cpu_user", 0.05},
{"used_cpu_sys_children", 0.00},
{"used_cpu_user_children", 0.00},
}
for _, c := range checkFloat {
assert.True(t, acc.CheckValue(c.name, c.value))
}
}
func TestRedisCanPullStatsFromMultipleServers(t *testing.T) {
l, err := net.Listen("tcp", ":0")
require.NoError(t, err)
defer l.Close()
go func() {
c, err := l.Accept()
if err != nil {
return
}
buf := bufio.NewReader(c)
for {
line, err := buf.ReadString('\n')
if err != nil {
return
}
if line != "info\n" {
return
}
fmt.Fprintf(c, "$%d\n", len(testOutput))
c.Write([]byte(testOutput))
}
}()
addr := fmt.Sprintf("redis://%s", l.Addr().String())
r := &Redis{
Servers: []string{addr},
}
var acc testutil.Accumulator
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err = r.Gather(&acc)
require.NoError(t, err)
checkInt := []struct {
name string
value uint64
}{
{"uptime", 238},
{"clients", 1},
{"used_memory", 1003936},
{"used_memory_rss", 811008},
{"used_memory_peak", 1003936},
{"used_memory_lua", 33792},
{"rdb_changes_since_last_save", 0},
{"total_connections_received", 2},
{"total_commands_processed", 1},
{"instantaneous_ops_per_sec", 0},
{"sync_full", 0},
{"sync_partial_ok", 0},
{"sync_partial_err", 0},
{"expired_keys", 0},
{"evicted_keys", 0},
{"keyspace_hits", 0},
{"keyspace_misses", 0},
{"pubsub_channels", 0},
{"pubsub_patterns", 0},
{"latest_fork_usec", 0},
{"connected_slaves", 0},
{"master_repl_offset", 0},
{"repl_backlog_active", 0},
{"repl_backlog_size", 1048576},
{"repl_backlog_histlen", 0},
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}
for _, c := range checkInt {
assert.True(t, acc.CheckValue(c.name, c.value))
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}
checkFloat := []struct {
name string
value float64
}{
{"mem_fragmentation_ratio", 0.81},
{"used_cpu_sys", 0.14},
{"used_cpu_user", 0.05},
{"used_cpu_sys_children", 0.00},
{"used_cpu_user_children", 0.00},
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}
for _, c := range checkFloat {
assert.True(t, acc.CheckValue(c.name, c.value))
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}
}
const testOutput = `# Server
redis_version:2.8.9
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:9ccc8119ea98f6e1
redis_mode:standalone
os:Darwin 14.1.0 x86_64
arch_bits:64
multiplexing_api:kqueue
gcc_version:4.2.1
process_id:40235
run_id:37d020620aadf0627282c0f3401405d774a82664
tcp_port:6379
uptime_in_seconds:238
uptime_in_days:0
hz:10
lru_clock:2364819
config_file:/usr/local/etc/redis.conf
# Clients
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_peak:1003936
used_memory_peak_human:980.41K
used_memory_lua:33792
mem_fragmentation_ratio:0.81
mem_allocator:libc
# 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
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
# Stats
total_connections_received:2
total_commands_processed:1
instantaneous_ops_per_sec:0
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:0
evicted_keys:0
keyspace_hits:0
keyspace_misses:0
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0
# Replication
role:master
connected_slaves:0
master_repl_offset:0
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
# Keyspace
`