forked from couchbase/go-couchbase
/
bench.go
219 lines (187 loc) · 5.02 KB
/
bench.go
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// Tool receives raw events from go-couchbase UPR client.
package main
import (
"flag"
"fmt"
"log"
"os"
"runtime/debug"
"strings"
"time"
mcd "github.com/couchbase/gomemcached"
mc "github.com/couchbase/gomemcached/client"
"github.com/couchbaselabs/go-couchbase"
)
var options struct {
buckets []string // buckets to connect with
maxVbno int // maximum number of vbuckets
stats int // periodic timeout(ms) to print stats, 0 will disable
duration int
printflogs bool
}
var done = make(chan bool, 16)
var rch = make(chan []interface{}, 10000)
func argParse() string {
var buckets string
flag.StringVar(&buckets, "buckets", "default",
"buckets to listen")
flag.IntVar(&options.maxVbno, "maxvb", 1024,
"maximum number of vbuckets")
flag.IntVar(&options.stats, "stats", 1000,
"periodic timeout in mS, to print statistics, `0` will disable stats")
flag.IntVar(&options.duration, "duration", 3000,
"receive mutations till duration milliseconds.")
flag.BoolVar(&options.printflogs, "flogs", false,
"display failover logs")
flag.Parse()
options.buckets = strings.Split(buckets, ",")
args := flag.Args()
if len(args) < 1 {
usage()
os.Exit(1)
}
return args[0]
}
func usage() {
fmt.Fprintf(os.Stderr, "Usage : %s [OPTIONS] <cluster-addr> \n", os.Args[0])
flag.PrintDefaults()
}
func main() {
cluster := argParse()
ch := make(chan *couchbase.UprFeed, 10)
for _, bucket := range options.buckets {
go startBucket(cluster, bucket, ch)
}
receive(ch)
}
func startBucket(cluster, bucketn string, ch chan *couchbase.UprFeed) int {
defer func() {
if r := recover(); r != nil {
fmt.Printf("%s:\n%s\n", r, debug.Stack())
}
}()
log.Printf("Connecting with %q\n", bucketn)
b, err := ConnectBucket(cluster, "default", bucketn)
mf(err, "bucket")
uprFeed, err := b.StartUprFeed("rawupr", uint32(0))
mf(err, "- upr")
vbnos := listOfVbnos(options.maxVbno)
flogs, err := b.GetFailoverLogs(vbnos)
mf(err, "- upr failoverlogs")
if options.printflogs {
printFlogs(vbnos, flogs)
}
ch <- uprFeed
go startUpr(uprFeed, flogs)
for {
e, ok := <-uprFeed.C
if ok == false {
log.Printf("Closing for bucket %q\n", bucketn)
}
rch <- []interface{}{bucketn, e}
}
}
func startUpr(uprFeed *couchbase.UprFeed, flogs couchbase.FailoverLog) {
start, end := uint64(0), uint64(0xFFFFFFFFFFFFFFFF)
snapStart, snapEnd := uint64(0), uint64(0)
for vbno, flog := range flogs {
x := flog[len(flog)-1] // map[uint16][][2]uint64
opaque, flags, vbuuid := uint16(0), uint32(0), x[0]
err := uprFeed.UprRequestStream(
vbno, opaque, flags, vbuuid, start, end, snapStart, snapEnd)
mf(err, fmt.Sprintf("stream-req for %v failed", vbno))
}
}
func endUpr(uprFeed *couchbase.UprFeed, vbnos []uint16) error {
for _, vbno := range vbnos {
if err := uprFeed.UprCloseStream(vbno, uint16(0)); err != nil {
mf(err, "- UprCloseStream()")
return err
}
}
return nil
}
func mf(err error, msg string) {
if err != nil {
log.Fatalf("%v: %v", msg, err)
}
}
func receive(ch chan *couchbase.UprFeed) {
// bucket -> Opcode -> #count
counts := make(map[string]map[mcd.CommandCode]int)
var tick <-chan time.Time
if options.stats > 0 {
tick = time.Tick(time.Millisecond * time.Duration(options.stats))
}
finTimeout := time.After(time.Millisecond * time.Duration(options.duration))
uprFeeds := make([]*couchbase.UprFeed, 0)
loop:
for {
select {
case uprFeed := <-ch:
uprFeeds = append(uprFeeds, uprFeed)
case msg, ok := <-rch:
if ok == false {
break loop
}
bucket, e := msg[0].(string), msg[1].(*mc.UprEvent)
if _, ok := counts[bucket]; !ok {
counts[bucket] = make(map[mcd.CommandCode]int)
}
if _, ok := counts[bucket][e.Opcode]; !ok {
counts[bucket][e.Opcode] = 0
}
counts[bucket][e.Opcode]++
case <-tick:
for bucket, m := range counts {
log.Printf("%q %s\n", bucket, sprintCounts(m))
}
case <-finTimeout:
for _, uprFeed := range uprFeeds {
endUpr(uprFeed, listOfVbnos(options.maxVbno))
}
break loop
}
}
fmt.Println("sleep wait ....")
time.Sleep(10000 * time.Millisecond)
}
func sprintCounts(counts map[mcd.CommandCode]int) string {
line := ""
for i := 0; i < 256; i++ {
opcode := mcd.CommandCode(i)
if n, ok := counts[opcode]; ok {
line += fmt.Sprintf("%s:%v ", mcd.CommandNames[opcode], n)
}
}
return strings.TrimRight(line, " ")
}
func listOfVbnos(maxVbno int) []uint16 {
// list of vbuckets
vbnos := make([]uint16, 0, maxVbno)
for i := 0; i < maxVbno; i++ {
vbnos = append(vbnos, uint16(i))
}
return vbnos
}
func printFlogs(vbnos []uint16, flogs couchbase.FailoverLog) {
for i, vbno := range vbnos {
log.Printf("Failover log for vbucket %v\n", vbno)
log.Printf(" %#v\n", flogs[uint16(i)])
}
}
func ConnectBucket(cluster, pooln, bucketn string) (*couchbase.Bucket, error) {
couch, err := couchbase.Connect("http://" + cluster)
if err != nil {
return nil, err
}
pool, err := couch.GetPool(pooln)
if err != nil {
return nil, err
}
bucket, err := pool.GetBucket(bucketn)
if err != nil {
return nil, err
}
return bucket, err
}