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sync.go
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sync.go
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package agent
import (
"fmt"
"sync/atomic"
"time"
"github.com/gammazero/workerpool"
)
type ChunkReport struct {
Num int64
Total int64
TimeExec time.Time
TimeStart int64
TimeEnd int64
ReadErrors uint64
WriteErrors uint64
Errors []string
ProcessedPoints int64
TimeTaken time.Duration
}
func (cr *ChunkReport) format() string {
percent := 100 * cr.Num / cr.Total
return fmt.Sprintf("[%d/%d](%d%%) from [%d][%s] to [%d][%s] (%d) Points Took [%s] ERRORS[R:%d|W:%d]",
cr.Num,
cr.Total,
percent,
cr.TimeStart,
time.Unix(cr.TimeStart, 0).String(),
cr.TimeEnd,
time.Unix(cr.TimeEnd, 0).String(),
cr.ProcessedPoints,
cr.TimeTaken.String(),
cr.ReadErrors,
cr.WriteErrors)
}
func (cr *ChunkReport) Log(prefix string) {
log.Infof("%s %s", prefix, cr.format())
}
func (cr *ChunkReport) Warn(prefix string) {
log.Warnf("%s %s", prefix, cr.format())
}
func (cr *ChunkReport) Error(prefix string) {
log.Warnf("%s %s", prefix, cr.format())
}
type SyncReport struct {
SrcSrv string
DstSrv string
SrcDB string
DstDB string
SrcRP string
DstRP string
TotalPoints int64
TotalElapsed time.Duration
Start time.Time
End time.Time
ChunkReport []*ChunkReport
BadChunks []*ChunkReport
}
func (sr *SyncReport) Log(prefix string) {
log.Printf("%s data from %s[%s|%s] to %s[%s|%s] has done #Points (%d) Took [%s] ERRORS [%d]!\n",
prefix,
sr.SrcSrv,
sr.SrcDB,
sr.SrcRP,
sr.DstSrv,
sr.DstDB,
sr.DstRP,
sr.TotalPoints,
sr.TotalElapsed.String(),
len(sr.BadChunks))
}
func (sr *SyncReport) RWErrors() (uint64, uint64, uint64) {
var readErrors, writeErrors uint64
for _, b := range sr.BadChunks {
readErrors += b.ReadErrors
writeErrors += b.WriteErrors
}
return readErrors, writeErrors, readErrors + writeErrors
}
func Sync(src *InfluxMonitor, dst *InfluxMonitor, sdb string, ddb string, srp *RetPol, drp *RetPol, sEpoch time.Time, eEpoch time.Time, dbschema *InfluxSchDb, chunk time.Duration, maxret time.Duration) *SyncReport {
if dbschema == nil {
err := fmt.Errorf("DBSChema for DB %s is null", sdb)
log.Errorf("%s", err.Error())
return nil
}
Report := &SyncReport{
SrcSrv: src.cfg.Name,
DstSrv: dst.cfg.Name,
SrcDB: sdb,
DstDB: ddb,
SrcRP: srp.Name,
DstRP: drp.Name,
Start: sEpoch,
End: eEpoch,
}
var hLength int64
var MaxLength int64
var chunkSecond int64
duration := eEpoch.Sub(sEpoch)
hLength = int64(duration/chunk) + 1
MaxLength = int64(maxret/chunk) + 1
if hLength > MaxLength {
hLength = MaxLength
}
chunkSecond = int64(chunk.Seconds())
chuckReport := make([]*ChunkReport, hLength)
badChunkReport := make([]*ChunkReport, 0)
log.Debugf("SYNC-DB-RP[%s|%s] From:%s To:%s | Duration: %s || #chunks: %d | chunk Duration %s ", sdb, srp.Name, sEpoch.String(), eEpoch.String(), duration.String(), hLength, chunk.String())
log.Tracef("SYNC-DB-RP Schema: %s ", srp)
var i int64
var dbpoints int64
dbs := time.Now()
for i = 0; i < hLength; i++ {
wp := workerpool.New(MainConfig.General.NumWorkers)
defer wp.Stop()
chs := time.Now()
//sync from newer to older data
endsec := eEpoch.Unix() - (i * chunkSecond)
startsec := eEpoch.Unix() - ((i + 1) * chunkSecond)
var totalpoints int64
totalpoints = 0
log.Debugf("Detected %d measurements on %s|%s", len(srp.Measurements), sdb, srp.Name)
//--------
var readErrors uint64
var writeErrors uint64
//--------
for m, sch := range srp.Measurements {
m := m
sch := sch
//add to the worker pool
wp.Submit(func() {
log.Tracef("Processing measurement %s with schema #%+v", m, sch)
log.Debugf("processing Database %s Measurement %s from %d to %d", sdb, m, startsec, endsec)
getvalues := fmt.Sprintf("select * from \"%v\" where time > %vs and time < %vs group by *", m, startsec, endsec)
batchpoints, np, rerr := ReadDB(src.cli, sdb, srp.Name, ddb, drp.Name, getvalues, sch.Fields)
if rerr != nil {
atomic.AddUint64(&readErrors, 1)
log.Errorf("error in read DB %s | Measurement %s | ERR: %s", sdb, m, rerr)
return
//return err
}
atomic.AddInt64(&totalpoints, np)
//totalpoints += np
log.Debugf("processed %d points", np)
werr := WriteDB(dst.cli, batchpoints)
if werr != nil {
atomic.AddUint64(&writeErrors, 1)
log.Errorf("error in write DB %s | Measurement %s | ERR: %s", ddb, m, werr)
return
//return err
}
})
//write datas of every hour
}
wp.StopWait()
chunkElapsed := time.Since(chs)
dbpoints += totalpoints
chrep := &ChunkReport{
Num: i + 1,
Total: hLength,
TimeExec: time.Now(),
TimeStart: startsec,
TimeEnd: endsec,
ReadErrors: readErrors,
WriteErrors: writeErrors,
ProcessedPoints: totalpoints,
TimeTaken: chunkElapsed,
}
chrep.Log("Processed Chunk")
chuckReport = append(chuckReport, chrep)
if readErrors+writeErrors > 0 {
badChunkReport = append(badChunkReport, chrep)
}
}
Report.TotalElapsed = time.Since(dbs)
Report.TotalPoints = dbpoints
Report.ChunkReport = chuckReport
Report.BadChunks = badChunkReport
Report.Log("Processed DB")
return Report
}
func SyncDBRP(src *InfluxMonitor, dst *InfluxMonitor, sdb string, ddb string, srp *RetPol, drp *RetPol, sEpoch time.Time, eEpoch time.Time, dbschema *InfluxSchDb, chunk time.Duration, maxret time.Duration) *SyncReport {
report := Sync(src, dst, sdb, ddb, srp, drp, sEpoch, eEpoch, dbschema, chunk, maxret)
if len(report.BadChunks) > 0 {
log.Warnf("Initializing Recovery for %d chunks", len(report.BadChunks))
newBadChunks := make([]*ChunkReport, 0)
for _, bc := range report.BadChunks {
bc.Warn("Recovery for Bad Chunk")
start := time.Unix(bc.TimeStart, 0)
end := time.Unix(bc.TimeEnd, 0)
recoveryrep := Sync(src, dst, sdb, ddb, srp, drp, start, end, dbschema, chunk/10, maxret)
newBadChunks = append(newBadChunks, recoveryrep.BadChunks...)
}
report.BadChunks = newBadChunks
}
return report
}