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devops_redis.go
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devops_redis.go
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package devops
import (
"fmt"
. "github.com/influxdata/influxdb-comparisons/bulk_data_gen/common"
"math/rand"
"time"
)
type LabeledDistributionMaker struct {
Label []byte
DistributionMaker func() Distribution
}
var (
RedisByteString = []byte("redis") // heap optimization
RedisUptime = []byte("uptime_in_seconds")
SixteenGB = float64(16 * 1024 * 1024 * 1024)
RedisTags = [][]byte{
[]byte("port"),
[]byte("server"),
}
RedisFields = []LabeledDistributionMaker{
{[]byte("total_connections_received"), func() Distribution { return MWD(ND(5, 1), 0) }},
{[]byte("expired_keys"), func() Distribution { return MWD(ND(50, 1), 0) }},
{[]byte("evicted_keys"), func() Distribution { return MWD(ND(50, 1), 0) }},
{[]byte("keyspace_hits"), func() Distribution { return MWD(ND(50, 1), 0) }},
{[]byte("keyspace_misses"), func() Distribution { return MWD(ND(50, 1), 0) }},
{[]byte("instantaneous_ops_per_sec"), func() Distribution { return WD(ND(1, 1), 0) }},
{[]byte("instantaneous_input_kbps"), func() Distribution { return WD(ND(1, 1), 0) }},
{[]byte("instantaneous_output_kbps"), func() Distribution { return WD(ND(1, 1), 0) }},
{[]byte("connected_clients"), func() Distribution { return CWD(ND(50, 1), 0, 10000, 0) }},
{[]byte("used_memory"), func() Distribution { return CWD(ND(50, 1), 0, SixteenGB, SixteenGB/2) }},
{[]byte("used_memory_rss"), func() Distribution { return CWD(ND(50, 1), 0, SixteenGB, SixteenGB/2) }},
{[]byte("used_memory_peak"), func() Distribution { return CWD(ND(50, 1), 0, SixteenGB, SixteenGB/2) }},
{[]byte("used_memory_lua"), func() Distribution { return CWD(ND(50, 1), 0, SixteenGB, SixteenGB/2) }},
{[]byte("rdb_changes_since_last_save"), func() Distribution { return CWD(ND(50, 1), 0, 10000, 0) }},
{[]byte("sync_full"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("sync_partial_ok"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("sync_partial_err"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("pubsub_channels"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("pubsub_patterns"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("latest_fork_usec"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("connected_slaves"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("master_repl_offset"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("repl_backlog_active"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("repl_backlog_size"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("repl_backlog_histlen"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("mem_fragmentation_ratio"), func() Distribution { return CWD(ND(5, 1), 0, 100, 0) }},
{[]byte("used_cpu_sys"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("used_cpu_user"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("used_cpu_sys_children"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
{[]byte("used_cpu_user_children"), func() Distribution { return CWD(ND(5, 1), 0, 1000, 0) }},
}
)
type RedisMeasurement struct {
timestamp time.Time
port, serverName []byte
uptime time.Duration
distributions []Distribution
}
func NewRedisMeasurement(start time.Time) *RedisMeasurement {
distributions := make([]Distribution, len(RedisFields))
for i := range RedisFields {
distributions[i] = RedisFields[i].DistributionMaker()
}
serverName := []byte(fmt.Sprintf("redis_%d", rand.Intn(100000)))
port := []byte(fmt.Sprintf("%d", rand.Intn(20000)+1024))
if Config != nil { // partial override from external config
serverName = Config.GetTagBytesValue(RedisByteString, RedisTags[1], true, serverName)
port = Config.GetTagBytesValue(RedisByteString, RedisTags[0], true, port)
}
return &RedisMeasurement{
port: port,
serverName: serverName,
timestamp: start,
uptime: time.Duration(0),
distributions: distributions,
}
}
func (m *RedisMeasurement) Tick(d time.Duration) {
m.timestamp = m.timestamp.Add(d)
m.uptime += d
for i := range m.distributions {
m.distributions[i].Advance()
}
}
func (m *RedisMeasurement) ToPoint(p *Point) bool {
p.SetMeasurementName(RedisByteString)
p.SetTimestamp(&m.timestamp)
p.AppendTag(RedisTags[0], m.port)
p.AppendTag(RedisTags[1], m.serverName)
p.AppendField(RedisUptime, int64(m.uptime.Seconds()))
for i := range m.distributions {
p.AppendField(RedisFields[i].Label, int64(m.distributions[i].Get()))
}
return true
}