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main.go
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main.go
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// SPDX-License-Identifier: AGPL-3.0-only
package main
import (
"context"
"flag"
"fmt"
"log"
"os"
"os/signal"
"path"
"sort"
"strings"
"sync"
"syscall"
"text/tabwriter"
"time"
gokitlog "github.com/go-kit/log"
"github.com/grafana/dskit/flagext"
"github.com/oklog/ulid"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/prometheus/model/labels"
"github.com/thanos-io/objstore"
"golang.org/x/sync/errgroup"
"github.com/grafana/mimir/pkg/compactor"
"github.com/grafana/mimir/pkg/storage/bucket"
"github.com/grafana/mimir/pkg/storage/tsdb/block"
"github.com/grafana/mimir/pkg/util"
"github.com/grafana/mimir/pkg/util/extprom"
)
func main() {
// Clean up all flags registered via init() methods of 3rd-party libraries.
flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
cfg := struct {
bucket bucket.Config
userID string
showDeleted bool
showLabels bool
showCreationTime bool
}{}
logger := gokitlog.NewNopLogger()
cfg.bucket.RegisterFlags(flag.CommandLine)
flag.StringVar(&cfg.userID, "user", "", "User (tenant)")
// Parse CLI arguments.
if err := flagext.ParseFlagsWithoutArguments(flag.CommandLine); err != nil {
log.Fatalln(err.Error())
}
if cfg.userID == "" {
log.Fatalln("no user specified")
}
ctx, cancel := signal.NotifyContext(context.Background(), syscall.SIGINT)
defer cancel()
bkt, err := bucket.NewClient(ctx, cfg.bucket, "bucket", logger, nil)
if err != nil {
log.Fatalln("failed to create bucket:", err)
}
log.Println("Listing metas")
metas, err := listDebugMetas(ctx, bkt, cfg.userID)
if err != nil {
log.Fatalln("failed to list debug metas:", err)
}
log.Println("Fetching", len(metas), "metas")
metasMap, err := fetchMetas(ctx, bkt, metas)
if err != nil {
log.Fatalln("failed to list fetch metas:", err)
}
df := compactor.NewShardAwareDeduplicateFilter()
s := extprom.NewTxGaugeVec(
nil,
prometheus.GaugeOpts{
Name: "synced",
Help: "Number of block metadata synced",
},
[]string{"state"}, []string{"duplicate"})
log.Println("Running filter")
err = df.Filter(ctx, metasMap, s)
if err != nil {
log.Fatalln("deduplication failed:", err)
}
log.Println("Deduplicated blocks")
printBlocks(metasMap)
}
func listDebugMetas(ctx context.Context, bkt objstore.Bucket, user string) ([]string, error) {
var paths []string
err := bkt.Iter(ctx, path.Join(user, "debug", "metas"), func(s string) error {
if !strings.HasSuffix(s, ".json") {
return nil
}
base := path.Base(s)
base = base[:len(base)-5] // remove ".json" suffix
_, err := ulid.Parse(base)
if err == nil {
paths = append(paths, s)
}
return nil
})
return paths, err
}
func fetchMetas(ctx context.Context, bkt objstore.Bucket, metaFiles []string) (map[ulid.ULID]*block.Meta, error) {
g, gctx := errgroup.WithContext(ctx)
ch := make(chan string, len(metaFiles))
for _, p := range metaFiles {
ch <- p
}
close(ch)
metasSync := sync.Mutex{}
metas := map[ulid.ULID]*block.Meta{}
const concurrencyLimit = 32
for i := 0; i < concurrencyLimit; i++ {
g.Go(func() error {
for p := range ch {
r, err := bkt.Get(gctx, p)
if err != nil {
return err
}
m, err := block.ReadMeta(r)
if err != nil {
if bkt.IsObjNotFoundErr(err) {
continue
}
return err
}
metasSync.Lock()
metas[m.ULID] = m
metasSync.Unlock()
fmt.Print(".")
}
return nil
})
}
return metas, g.Wait()
}
func printBlocks(metas map[ulid.ULID]*block.Meta) {
var blocks []*block.Meta
for _, b := range metas {
blocks = append(blocks, b)
}
sort.Slice(blocks, func(i, j int) bool {
return blocks[i].MinTime < blocks[j].MinTime
})
tabber := tabwriter.NewWriter(os.Stdout, 1, 4, 3, ' ', 0)
defer tabber.Flush()
// Header
fmt.Fprintf(tabber, "Block ID\t")
fmt.Fprintf(tabber, "Min Time\t")
fmt.Fprintf(tabber, "Max Time\t")
fmt.Fprintf(tabber, "Duration\t")
fmt.Fprintf(tabber, "Labels\t")
fmt.Fprintln(tabber)
for _, b := range blocks {
fmt.Fprintf(tabber, "%v\t", b.ULID)
fmt.Fprintf(tabber, "%v\t", util.TimeFromMillis(b.MinTime).UTC().Format(time.RFC3339))
fmt.Fprintf(tabber, "%v\t", util.TimeFromMillis(b.MaxTime).UTC().Format(time.RFC3339))
fmt.Fprintf(tabber, "%v\t", util.TimeFromMillis(b.MaxTime).Sub(util.TimeFromMillis(b.MinTime)))
fmt.Fprintf(tabber, "%s\t", labels.FromMap(b.Thanos.Labels))
fmt.Fprintln(tabber)
}
}