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cleaner.go
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cleaner.go
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/*
* Copyright 2019 Insolar Technologies
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package storage
import (
"context"
"github.com/dgraph-io/badger"
multierror "github.com/hashicorp/go-multierror"
"github.com/insolar/insolar/core"
"github.com/insolar/insolar/instrumentation/insmetrics"
"github.com/insolar/insolar/ledger/recentstorage"
"github.com/insolar/insolar/ledger/storage/jet"
"github.com/pkg/errors"
"go.opencensus.io/stats"
)
// Cleaner cleans lights after sync to heavy
//go:generate minimock -i github.com/insolar/insolar/ledger/storage.Cleaner -o ./ -s _mock.go
type Cleaner interface {
CleanJetRecordsUntilPulse(
ctx context.Context,
jetID core.RecordID,
pn core.PulseNumber,
) (map[string]RmStat, error)
CleanJetIndexes(
ctx context.Context,
jetID core.RecordID,
recent recentstorage.RecentIndexStorage,
candidates []core.RecordID,
) (RmStat, error)
}
type cleaner struct {
DB DBContext `inject:""`
}
// NewCleaner is a constructor for Cleaner.
func NewCleaner() Cleaner {
return new(cleaner)
}
var rmScanFromPulse = core.PulseNumber(core.FirstPulseNumber + 1).Bytes()
// RmStat holds removal statistics
type RmStat struct {
Scanned int64
Removed int64
Errors int64
}
func recordCleanupMetrics(ctx context.Context, stat map[string]RmStat) {
for name, value := range stat {
mctx := insmetrics.InsertTag(ctx, recordType, name)
stats.Record(mctx,
statCleanScanned.M(value.Scanned),
statCleanRemoved.M(value.Removed),
)
}
}
// CleanJetRecordsUntilPulse removes all records synced on heavy, except indexes until pn pulse number for jetID.
//
// Returns removal statistics and cummulative error of sub cleanup methods.
func (c *cleaner) CleanJetRecordsUntilPulse(
ctx context.Context,
jetID core.RecordID,
pn core.PulseNumber,
) (map[string]RmStat, error) {
allstat := map[string]RmStat{}
var result error
var err error
var stat RmStat
if stat, err = c.RemoveJetBlobsUntil(ctx, jetID, pn); err != nil {
result = multierror.Append(result, errors.Wrap(err, "RemoveJetBlobsUntil"))
stat.Errors = stat.Scanned
stat.Removed = 0
}
allstat["blobs"] = stat
if stat, err = c.RemoveJetRecordsUntil(ctx, jetID, pn); err != nil {
result = multierror.Append(result, errors.Wrap(err, "RemoveJetRecordsUntil"))
stat.Errors = stat.Scanned
stat.Removed = 0
}
allstat["records"] = stat
if stat, err = c.RemoveJetDropsUntil(ctx, jetID, pn); err != nil {
result = multierror.Append(result, errors.Wrap(err, "RemoveJetDropsUntil"))
stat.Errors = stat.Scanned
stat.Removed = 0
}
allstat["drops"] = stat
recordCleanupMetrics(ctx, allstat)
return allstat, result
}
// RemoveJetBlobsUntil removes for provided JetID all blobs older than provided pulse number.
func (c *cleaner) RemoveJetBlobsUntil(ctx context.Context, jetID core.RecordID, pn core.PulseNumber) (RmStat, error) {
return c.removeJetRecordsUntil(ctx, scopeIDBlob, jetID, pn)
}
// RemoveJetRecordsUntil removes for provided JetID all records older than provided pulse number.
// In recods pending requests live, so we need recent storage here
func (c *cleaner) RemoveJetRecordsUntil(ctx context.Context, jetID core.RecordID, pn core.PulseNumber) (RmStat, error) {
return c.removeJetRecordsUntil(ctx, scopeIDRecord, jetID, pn)
}
// RemoveJetDropsUntil removes for provided JetID all jet drops older than provided pulse number.
func (c *cleaner) RemoveJetDropsUntil(ctx context.Context, jetID core.RecordID, pn core.PulseNumber) (RmStat, error) {
return c.removeJetRecordsUntil(ctx, scopeIDJetDrop, jetID, pn)
}
func (c *cleaner) removeJetRecordsUntil(
ctx context.Context,
namespace byte,
jetID core.RecordID,
pn core.PulseNumber,
) (RmStat, error) {
var stat RmStat
_, prefix := jet.Jet(jetID)
jetprefix := prefixkey(namespace, prefix)
startprefix := prefixkey(namespace, prefix, rmScanFromPulse)
return stat, c.DB.GetBadgerDB().Update(func(txn *badger.Txn) error {
opts := badger.DefaultIteratorOptions
opts.PrefetchSize = 0
opts.PrefetchValues = false
it := txn.NewIterator(opts)
defer it.Close()
for it.Seek(startprefix); it.ValidForPrefix(jetprefix); it.Next() {
key := it.Item().KeyCopy(nil)
if pulseFromKey(key) >= pn {
break
}
stat.Scanned++
if err := txn.Delete(key); err != nil {
return err
}
stat.Removed++
}
return nil
})
}
// CleanJetIndexes removes indexes from candidates list,
// call recent storage is list still valid.
//
// It locks recent jet store while works.
func (c *cleaner) CleanJetIndexes(
ctx context.Context,
jetID core.RecordID,
recent recentstorage.RecentIndexStorage,
candidates []core.RecordID,
) (RmStat, error) {
var stat RmStat
_, prefix := jet.Jet(jetID)
recent.FilterNotExistWithLock(ctx, candidates, func(fordelete []core.RecordID) {
for _, recID := range fordelete {
stat.Scanned++
key := prefixkey(scopeIDLifeline, prefix, recID[:])
err := c.DB.GetBadgerDB().Update(func(txn *badger.Txn) error {
return txn.Delete(key)
})
if err != nil {
stat.Errors++
} else {
stat.Removed++
}
}
})
mctx := insmetrics.InsertTag(ctx, recordType, "indexes")
stats.Record(mctx,
statCleanScanned.M(stat.Scanned),
statCleanRemoved.M(stat.Removed),
statCleanFailed.M(stat.Errors),
)
return stat, nil
}