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analysis.go
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analysis.go
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package gorma
import (
"fmt"
"os"
"sort"
"strconv"
"strings"
"github.com/vrischmann/rdbtools"
. "github.com/hhxsv5/go-redis-memory-analysis/storages"
"time"
)
type Report struct {
Key string
Count uint64
Size uint64
NeverExpire uint64
AvgTtl uint64
}
type DBReports map[uint64][]Report
type KeyReports map[string]Report
type SortBySizeReports []Report
type SortByCountReports []Report
type Analysis struct {
redis *RedisClient
rdb *os.File
Reports DBReports
}
func (sr SortBySizeReports) Len() int {
return len(sr)
}
func (sr SortBySizeReports) Less(i, j int) bool {
return sr[i].Size > sr[j].Size
}
func (sr SortBySizeReports) Swap(i, j int) {
sr[i], sr[j] = sr[j], sr[i]
}
func (sr SortByCountReports) Len() int {
return len(sr)
}
func (sr SortByCountReports) Less(i, j int) bool {
return sr[i].Count > sr[j].Count
}
func (sr SortByCountReports) Swap(i, j int) {
sr[i], sr[j] = sr[j], sr[i]
}
func NewAnalysis() *Analysis {
return &Analysis{nil, nil, DBReports{}}
}
func (analysis *Analysis) Open(host string, port uint16, password string) error {
redis, err := NewRedisClient(host, port, password)
if err != nil {
return err
}
analysis.redis = redis
return nil
}
func (analysis *Analysis) OpenRDB(rdb string) error {
fp, err := os.Open(rdb)
if err != nil {
return err
}
analysis.rdb = fp
return nil
}
func (analysis *Analysis) Close() {
if analysis.redis != nil {
analysis.redis.Close()
}
}
func (analysis *Analysis) CloseRDB() {
if analysis.rdb != nil {
analysis.rdb.Close()
}
}
func (analysis Analysis) Start(delimiters []string) {
fmt.Println("Starting analysis")
match := "*[" + strings.Join(delimiters, "") + "]*"
databases, _ := analysis.redis.GetDatabases()
var (
cursor uint64
r Report
f float64
ttl int64
length uint64
sr SortBySizeReports
mr KeyReports
)
for db, _ := range databases {
fmt.Println("Analyzing db", db)
cursor = 0
mr = KeyReports{}
analysis.redis.Select(db)
for {
keys, _ := analysis.redis.Scan(&cursor, match, 3000)
fd, fp, tmp, nk := "", 0, 0, ""
for _, key := range keys {
fd, fp, tmp, nk, ttl = "", 0, 0, "", 0
for _, delimiter := range delimiters {
tmp = strings.Index(key, delimiter)
if tmp != -1 && (tmp < fp || fp == 0) {
fd, fp = delimiter, tmp
}
}
if fp == 0 {
continue
}
nk = key[0:fp] + fd + "*"
if _, ok := mr[nk]; ok {
r = mr[nk]
} else {
r = Report{nk, 0, 0, 0, 0}
}
ttl, _ = analysis.redis.Ttl(key)
switch ttl {
case -2:
continue
case -1:
r.NeverExpire++
r.Count++
default:
f = float64(r.AvgTtl*(r.Count-r.NeverExpire)+uint64(ttl)) / float64(r.Count+1-r.NeverExpire)
ttl, _ := strconv.ParseUint(fmt.Sprintf("%0.0f", f), 10, 64)
r.AvgTtl = ttl
r.Count++
}
length, _ = analysis.redis.SerializedLength(key)
r.Size += length
mr[nk] = r
}
if cursor == 0 {
break
}
}
//Sort by size
sr = SortBySizeReports{}
for _, report := range mr {
sr = append(sr, report)
}
sort.Sort(sr)
analysis.Reports[db] = sr
}
}
func (analysis Analysis) StartRDB(delimiters []string) {
fmt.Println("Starting analysis")
var (
r Report
sr SortByCountReports
mr KeyReports
cdb = -1
)
ctx := rdbtools.ParserContext{
DbCh: make(chan int),
StringObjectCh: make(chan rdbtools.StringObject),
ListMetadataCh: make(chan rdbtools.ListMetadata),
ListDataCh: make(chan interface{}),
SetMetadataCh: make(chan rdbtools.SetMetadata),
SetDataCh: make(chan interface{}),
HashMetadataCh: make(chan rdbtools.HashMetadata),
HashDataCh: make(chan rdbtools.HashEntry),
SortedSetMetadataCh: make(chan rdbtools.SortedSetMetadata),
SortedSetEntriesCh: make(chan rdbtools.SortedSetEntry),
}
p := rdbtools.NewParser(ctx)
go func() {
analyze := func(ko rdbtools.KeyObject) {
key := rdbtools.DataToString(ko.Key)
fd, fp, tmp, nk := "", 0, 0, ""
for _, delimiter := range delimiters {
tmp = strings.Index(key, delimiter)
if tmp != -1 && (tmp < fp || fp == 0) {
fd, fp = delimiter, tmp
}
}
if fp == 0 {
return
}
nk = key[0:fp] + fd + "*"
if _, ok := mr[nk]; ok {
r = mr[nk]
} else {
r = Report{nk, 0, 0, 0, 0}
}
if ko.ExpiryTime.IsZero() {
r.NeverExpire++
} else {
if ko.Expired() {
//Ignore
} else {
ff := float64(r.AvgTtl*(r.Count-r.NeverExpire)+uint64(ko.ExpiryTime.Unix()-time.Now().Unix())) / float64(r.Count+1-r.NeverExpire)
ttl, _ := strconv.ParseUint(fmt.Sprintf("%0.0f", ff), 10, 64)
r.AvgTtl = ttl
}
}
r.Count++
mr[nk] = r
}
for {
select {
case t, ok := <-ctx.DbCh:
if cdb >= 0 {
//Sort by size
sr = SortByCountReports{}
for _, report := range mr {
sr = append(sr, report)
}
sort.Sort(sr)
analysis.Reports[uint64(cdb)] = sr
}
if !ok {
ctx.DbCh = nil
break
}
fmt.Println("Analyzing db", t)
cdb = t
mr = KeyReports{}
case t, ok := <-ctx.StringObjectCh:
if !ok {
ctx.StringObjectCh = nil
break
}
analyze(t.Key)
//fmt.Println("string object", t)
case t, ok := <-ctx.ListMetadataCh:
if !ok {
ctx.ListMetadataCh = nil
break
}
analyze(t.Key)
//fmt.Println("list meta data", t)
case _, ok := <-ctx.ListDataCh:
if !ok {
ctx.ListDataCh = nil
break
}
//fmt.Println("list data", rdbtools.DataToString(t))
case t, ok := <-ctx.SetMetadataCh:
if !ok {
ctx.SetMetadataCh = nil
break
}
analyze(t.Key)
//fmt.Println("set meta data", t)
case _, ok := <-ctx.SetDataCh:
if !ok {
ctx.SetDataCh = nil
break
}
//fmt.Println("set data", rdbtools.DataToString(t))
case t, ok := <-ctx.HashMetadataCh:
if !ok {
ctx.HashMetadataCh = nil
break
}
analyze(t.Key)
//fmt.Println("hash meta data", t)
case _, ok := <-ctx.HashDataCh:
if !ok {
ctx.HashDataCh = nil
break
}
//fmt.Println("hash data", t)
case t, ok := <-ctx.SortedSetMetadataCh:
if !ok {
ctx.SortedSetMetadataCh = nil
break
}
analyze(t.Key)
//fmt.Println("sorted set meta data", t)
case _, ok := <-ctx.SortedSetEntriesCh:
if !ok {
ctx.SortedSetEntriesCh = nil
break
}
//fmt.Println("sorted set entries", t)
}
if ctx.Invalid() {
break
}
}
//fmt.Println(analysis.Reports)
}()
if err := p.Parse(analysis.rdb); err != nil {
panic(err)
}
}
func (analysis Analysis) SaveReports(folder string) error {
fmt.Println("Saving the results of the analysis into", folder)
if _, err := os.Stat(folder); os.IsNotExist(err) {
os.MkdirAll(folder, os.ModePerm)
}
var template string
if analysis.redis != nil {
template = fmt.Sprintf("%s%sredis-analysis-%s%s", folder, string(os.PathSeparator), strings.Replace(analysis.redis.Id, ":", "-", -1), "-%d.csv")
} else if analysis.rdb != nil {
template = fmt.Sprintf("%s%sredis-analysis-%s%s", folder, string(os.PathSeparator), strings.Replace(analysis.rdb.Name(), "/", "-", -1), "-%d.csv")
} else {
template = fmt.Sprintf("%s%sredis-analysis-%s", folder, string(os.PathSeparator), "-%d.csv")
}
var (
str string
filename string
size float64
unit string
)
for db, reports := range analysis.Reports {
filename = fmt.Sprintf(template, db)
fp, err := NewFile(filename, os.O_CREATE|os.O_WRONLY, os.ModePerm)
if err != nil {
return err
}
fp.Append([]byte("Key,Count,Size,NeverExpire,AvgTtl(excluded never expire)\n"))
for _, value := range reports {
size, unit = HumanSize(value.Size)
str = fmt.Sprintf("%s,%d,%s,%d,%d\n",
value.Key,
value.Count,
fmt.Sprintf("%0.3f %s", size, unit),
value.NeverExpire,
value.AvgTtl)
fp.Append([]byte(str))
}
fp.Close()
}
return nil
}