/
main.go
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/
main.go
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// Copyright (c) 2021 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package main
import (
"encoding/base64"
"fmt"
"log"
"os"
"sort"
"time"
"github.com/pborman/getopt"
"go.uber.org/zap"
"github.com/m3db/m3/src/x/ident"
xtime "github.com/m3db/m3/src/x/time"
)
func main() {
var (
path = getopt.StringLong("path", 'p', "", "file path [e.g. /var/lib/m3db/commitlogs/commitlog-0-161023.db]")
idFilter = getopt.StringLong("id-filter", 'f', "", "ID Contains Filter (optional)")
idSizeFilter = getopt.IntLong("id-size-filter", 's', 0, "ID Size (bytes) Filter (optional)")
mode = getopt.StringLong("mode", 'm', "", "Action [print,summary]. Defaults to 'print'")
top = getopt.IntLong("top", 't', 0, "Print out only top N IDs")
)
getopt.Parse()
rawLogger, err := zap.NewDevelopment()
if err != nil {
log.Fatalf("unable to create logger: %+v", err)
}
logger := rawLogger.Sugar()
if *path == "" {
getopt.Usage()
os.Exit(1)
}
reader, err := newFilteringReader(*path, idFilter, idSizeFilter)
if err != nil {
logger.Fatalf("unable to open reader: %v", err)
}
defer reader.Close()
switch *mode {
case "summary":
err = printSummary(reader, top)
default:
err = printMetrics(reader)
}
if err != nil {
logger.Fatalf("error while reading commitlog: %v", err)
}
}
func printMetrics(reader *filteringReader) error {
var (
entryCount uint32
annotationSizeTotal uint64
start = time.Now()
)
for {
entry, found, err := reader.Read()
if err != nil {
return err
}
if !found {
break
}
series := entry.Series
fmt.Printf("{id: %s, dp: %+v, ns: %s, shard: %d", // nolint: forbidigo
series.ID, entry.Datapoint, entry.Series.Namespace, entry.Series.Shard)
if len(entry.Annotation) > 0 {
fmt.Printf(", annotation: %s", // nolint: forbidigo
base64.StdEncoding.EncodeToString(entry.Annotation))
annotationSizeTotal += uint64(len(entry.Annotation))
}
fmt.Println("}") // nolint: forbidigo
entryCount++
}
runTime := time.Since(start)
fmt.Printf("\nRunning time: %s\n", runTime) // nolint: forbidigo
fmt.Printf("%d entries read\n", entryCount) // nolint: forbidigo
fmt.Printf("Total annotation size: %d bytes\n", annotationSizeTotal) // nolint: forbidigo
return nil
}
func printSummary(reader *filteringReader, top *int) error {
var (
entryCount uint32
start = time.Now()
datapointCount = map[ident.ID]uint32{}
totalIDSize uint64
earliestDatapoint xtime.UnixNano
oldestDatapoint xtime.UnixNano
)
for {
entry, found, err := reader.Read()
if err != nil {
return err
}
if !found {
break
}
dp := entry.Datapoint
if earliestDatapoint == 0 || earliestDatapoint > dp.TimestampNanos {
earliestDatapoint = dp.TimestampNanos
}
if oldestDatapoint == 0 || oldestDatapoint < dp.TimestampNanos {
oldestDatapoint = dp.TimestampNanos
}
datapointCount[entry.Series.ID]++
entryCount++
}
runTime := time.Since(start)
fmt.Printf("\nRunning time: %s\n", runTime) // nolint: forbidigo
fmt.Printf("%d entries read\n", entryCount) // nolint: forbidigo
fmt.Printf("time range [%s:%s]\n", earliestDatapoint.String(), oldestDatapoint.String()) // nolint: forbidigo
datapointCountArr := idPairs{}
sizeArr := idPairs{}
for ID, count := range datapointCount {
IDSize := len(ID.Bytes())
totalIDSize += uint64(IDSize)
datapointCountArr = append(datapointCountArr, idPair{ID: ID, Value: count})
sizeArr = append(sizeArr, idPair{ID: ID, Value: uint32(IDSize)})
}
sort.Sort(sort.Reverse(datapointCountArr))
sort.Sort(sort.Reverse(sizeArr))
fmt.Printf("total ID size: %d bytes\n", totalIDSize) // nolint: forbidigo
fmt.Printf("total distinct number of IDs %d \n", len(datapointCount)) // nolint: forbidigo
limit := len(datapointCountArr)
if *top > 0 && *top < limit {
limit = *top
}
fmt.Printf("ID datapoint counts: \n") // nolint: forbidigo
for i := 0; i < limit; i++ {
pair := datapointCountArr[i]
fmt.Printf("%-10d %s\n", pair.Value, pair.ID.String()) // nolint: forbidigo
}
fmt.Printf("ID sizes(bytes): \n") // nolint: forbidigo
for i := 0; i < limit; i++ {
pair := sizeArr[i]
fmt.Printf("%-10d %s\n", pair.Value, pair.ID.String()) // nolint: forbidigo
}
return nil
}
type idPair struct {
ID ident.ID
Value uint32
}
type idPairs []idPair
func (p idPairs) Len() int { return len(p) }
func (p idPairs) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
func (p idPairs) Less(i, j int) bool { return p[i].Value < p[j].Value }