/
stats.go
140 lines (118 loc) · 4.63 KB
/
stats.go
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package main
import (
"reflect"
"strings"
"time"
)
const (
OpsPerSec = iota
HitRate
UsedMemory
MemoryFragmentationRatio
EvictedKeys
BlockedClients
ConnectedClients
ConnectedSlaves
KeyspaceHits
RDBLastSaveTime
RDBChangesSinceLastSave
RejectedConnections
KeySpaceMisses
CreatedAt
)
const KB = 1 << (10 * 1)
const (
fileHeader = "instantaneous_ops_per_sec,hit_rate,used_memory,mem_fragmentation_ratio,evicted_keys,blocked_clients,connected_clients,connected_slaves,keyspace_hits,rdb_last_save_time,rdb_changes_since_last_save,rejected_conncections,keyspace_misses,created_at"
)
type stat struct {
OpsPerSec int `json:"instantaneous_ops_per_sec"`
HitRate float64 `json:"hit_rate"`
UsedMemory float64 `json:"used_memory"`
MemoryFragmentationRatio float64 `json:"mem_fragmentation_ratio"`
EvictedKeys int `json:"evicted_keys"`
BlockedClients int `json:"blocked_clients"`
ConnectedClients int `json:"connected_clients"`
ConnectedSlaves int `json:"connected_slaves"`
KeyspaceHits int `json:"keyspace_hits"`
RDBLastSaveTime int64 `json:"rdb_last_save_time"`
RDBChangesSinceLastSave int `json:"rdb_changes_since_last_save"`
RejectedConnections int `json:"rejected_connections"`
KeySpaceMisses int `json:"keyspace_misses"`
CreatedAt int64 `json:"created_at"`
}
func (stat *stat) toString() string {
structValue := reflect.ValueOf(*stat)
constructStr := ""
for j := 0; j < structValue.NumField(); j++ {
val := structValue.Field(j)
var valStr string
switch val.Kind() {
case reflect.Int64:
valStr = fromInt64(val.Int())
case reflect.Int:
valStr = fromInt64(int64(val.Interface().(int)))
case reflect.Float64:
valStr = fromFloat(val.Float())
}
if j+1 == structValue.NumField() {
constructStr += valStr
} else {
constructStr += valStr + ","
}
}
return constructStr
}
func newStat(valueArr []string) *stat {
unRedisStat := new(stat)
unRedisStat.OpsPerSec = toInt(valueArr[OpsPerSec])
unRedisStat.HitRate = toFloat(valueArr[HitRate])
unRedisStat.UsedMemory = toFloat(valueArr[UsedMemory])
unRedisStat.MemoryFragmentationRatio = toFloat(valueArr[MemoryFragmentationRatio])
unRedisStat.EvictedKeys = toInt(valueArr[EvictedKeys])
unRedisStat.BlockedClients = toInt(valueArr[BlockedClients])
unRedisStat.ConnectedClients = toInt(valueArr[ConnectedClients])
unRedisStat.ConnectedSlaves = toInt(valueArr[ConnectedSlaves])
unRedisStat.KeyspaceHits = toInt(valueArr[KeyspaceHits])
unRedisStat.RDBLastSaveTime = toInt64(valueArr[RDBLastSaveTime])
unRedisStat.RDBChangesSinceLastSave = toInt(valueArr[RDBChangesSinceLastSave])
unRedisStat.RejectedConnections = toInt(valueArr[RejectedConnections])
unRedisStat.KeySpaceMisses = toInt(valueArr[KeySpaceMisses])
unRedisStat.CreatedAt = toInt64(valueArr[CreatedAt])
return unRedisStat
}
func newStatFromInfo(info map[string]map[string]interface{}) *stat {
statArr := make([]string, CreatedAt+1)
statArr[OpsPerSec] = (info["Stats"]["instantaneous_ops_per_sec"]).(string)
statArr[UsedMemory] = (info["Memory"]["used_memory"]).(string)
statArr[MemoryFragmentationRatio] = (info["Memory"]["mem_fragmentation_ratio"]).(string)
statArr[EvictedKeys] = (info["Stats"]["evicted_keys"]).(string)
statArr[BlockedClients] = (info["Clients"]["blocked_clients"]).(string)
statArr[ConnectedClients] = (info["Clients"]["connected_clients"]).(string)
statArr[ConnectedSlaves] = (info["Replication"]["connected_slaves"]).(string)
statArr[KeyspaceHits] = (info["Stats"]["keyspace_hits"]).(string)
statArr[RDBLastSaveTime] = (info["Persistence"]["rdb_last_save_time"]).(string)
statArr[RDBChangesSinceLastSave] = (info["Persistence"]["rdb_changes_since_last_save"]).(string)
statArr[RejectedConnections] = (info["Stats"]["rejected_connections"]).(string)
statArr[KeySpaceMisses] = (info["Stats"]["keyspace_misses"]).(string)
statArr[CreatedAt] = fromInt64(time.Now().UnixNano() / (int64(time.Millisecond) / int64(time.Nanosecond)))
calculateKB := toFloat(statArr[UsedMemory]) / KB
statArr[UsedMemory] = fromFloat(calculateKB)
if toInt(statArr[KeyspaceHits]) == 0 {
statArr[HitRate] = "0"
} else {
val := toFloat(statArr[KeyspaceHits]) / (toFloat(statArr[KeyspaceHits]) + toFloat(statArr[KeySpaceMisses]))
statArr[HitRate] = fromFloat(val)
}
return newStat(statArr)
}
func statsToString(stats []*stat) string {
if len(stats) > 0 {
statToFile := make([]string, len(stats)+1)
statToFile[0] = fileHeader
for i, stat := range stats {
statToFile[i+1] = stat.toString()
}
return strings.Join(statToFile, "\n")
}
return ""
}