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Change all license headers to comply with REUSE specification. Fix #16132 Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github> Co-authored-by: John Olheiser <john.olheiser@gmail.com>
215 lines
6.1 KiB
Go
215 lines
6.1 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package nosql
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import (
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"fmt"
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"path"
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"runtime/pprof"
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"strconv"
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"strings"
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"code.gitea.io/gitea/modules/log"
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"github.com/syndtr/goleveldb/leveldb"
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"github.com/syndtr/goleveldb/leveldb/errors"
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"github.com/syndtr/goleveldb/leveldb/opt"
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)
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// CloseLevelDB closes a levelDB
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func (m *Manager) CloseLevelDB(connection string) error {
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m.mutex.Lock()
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defer m.mutex.Unlock()
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db, ok := m.LevelDBConnections[connection]
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if !ok {
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// Try the full URI
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uri := ToLevelDBURI(connection)
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db, ok = m.LevelDBConnections[uri.String()]
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if !ok {
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// Try the datadir directly
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dataDir := path.Join(uri.Host, uri.Path)
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db, ok = m.LevelDBConnections[dataDir]
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}
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}
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if !ok {
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return nil
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}
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db.count--
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if db.count > 0 {
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return nil
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}
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for _, name := range db.name {
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delete(m.LevelDBConnections, name)
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}
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return db.db.Close()
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}
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// GetLevelDB gets a levelDB for a particular connection
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func (m *Manager) GetLevelDB(connection string) (db *leveldb.DB, err error) {
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// Because we want associate any goroutines created by this call to the main nosqldb context we need to
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// wrap this in a goroutine labelled with the nosqldb context
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done := make(chan struct{})
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var recovered interface{}
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go func() {
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defer func() {
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recovered = recover()
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if recovered != nil {
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log.Critical("PANIC during GetLevelDB: %v\nStacktrace: %s", recovered, log.Stack(2))
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}
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close(done)
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}()
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pprof.SetGoroutineLabels(m.ctx)
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db, err = m.getLevelDB(connection)
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}()
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<-done
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if recovered != nil {
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panic(recovered)
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}
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return db, err
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}
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func (m *Manager) getLevelDB(connection string) (*leveldb.DB, error) {
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// Convert the provided connection description to the common format
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uri := ToLevelDBURI(connection)
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// Get the datadir
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dataDir := path.Join(uri.Host, uri.Path)
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m.mutex.Lock()
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defer m.mutex.Unlock()
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db, ok := m.LevelDBConnections[connection]
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if ok {
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db.count++
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return db.db, nil
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}
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db, ok = m.LevelDBConnections[uri.String()]
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if ok {
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db.count++
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return db.db, nil
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}
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// if there is already a connection to this leveldb reuse that
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// NOTE: if there differing options then only the first leveldb connection will be used
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db, ok = m.LevelDBConnections[dataDir]
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if ok {
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db.count++
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log.Warn("Duplicate connection to level db: %s with different connection strings. Initial connection: %s. This connection: %s", dataDir, db.name[0], connection)
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db.name = append(db.name, connection)
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m.LevelDBConnections[connection] = db
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return db.db, nil
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}
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db = &levelDBHolder{
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name: []string{connection, uri.String(), dataDir},
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}
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opts := &opt.Options{}
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for k, v := range uri.Query() {
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switch replacer.Replace(strings.ToLower(k)) {
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case "blockcachecapacity":
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opts.BlockCacheCapacity, _ = strconv.Atoi(v[0])
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case "blockcacheevictremoved":
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opts.BlockCacheEvictRemoved, _ = strconv.ParseBool(v[0])
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case "blockrestartinterval":
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opts.BlockRestartInterval, _ = strconv.Atoi(v[0])
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case "blocksize":
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opts.BlockSize, _ = strconv.Atoi(v[0])
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case "compactionexpandlimitfactor":
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opts.CompactionExpandLimitFactor, _ = strconv.Atoi(v[0])
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case "compactiongpoverlapsfactor":
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opts.CompactionGPOverlapsFactor, _ = strconv.Atoi(v[0])
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case "compactionl0trigger":
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opts.CompactionL0Trigger, _ = strconv.Atoi(v[0])
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case "compactionsourcelimitfactor":
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opts.CompactionSourceLimitFactor, _ = strconv.Atoi(v[0])
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case "compactiontablesize":
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opts.CompactionTableSize, _ = strconv.Atoi(v[0])
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case "compactiontablesizemultiplier":
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opts.CompactionTableSizeMultiplier, _ = strconv.ParseFloat(v[0], 64)
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case "compactiontablesizemultiplierperlevel":
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for _, val := range v {
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f, _ := strconv.ParseFloat(val, 64)
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opts.CompactionTableSizeMultiplierPerLevel = append(opts.CompactionTableSizeMultiplierPerLevel, f)
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}
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case "compactiontotalsize":
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opts.CompactionTotalSize, _ = strconv.Atoi(v[0])
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case "compactiontotalsizemultiplier":
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opts.CompactionTotalSizeMultiplier, _ = strconv.ParseFloat(v[0], 64)
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case "compactiontotalsizemultiplierperlevel":
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for _, val := range v {
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f, _ := strconv.ParseFloat(val, 64)
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opts.CompactionTotalSizeMultiplierPerLevel = append(opts.CompactionTotalSizeMultiplierPerLevel, f)
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}
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case "compression":
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val, _ := strconv.Atoi(v[0])
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opts.Compression = opt.Compression(val)
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case "disablebufferpool":
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opts.DisableBufferPool, _ = strconv.ParseBool(v[0])
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case "disableblockcache":
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opts.DisableBlockCache, _ = strconv.ParseBool(v[0])
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case "disablecompactionbackoff":
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opts.DisableCompactionBackoff, _ = strconv.ParseBool(v[0])
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case "disablelargebatchtransaction":
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opts.DisableLargeBatchTransaction, _ = strconv.ParseBool(v[0])
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case "errorifexist":
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opts.ErrorIfExist, _ = strconv.ParseBool(v[0])
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case "errorifmissing":
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opts.ErrorIfMissing, _ = strconv.ParseBool(v[0])
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case "iteratorsamplingrate":
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opts.IteratorSamplingRate, _ = strconv.Atoi(v[0])
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case "nosync":
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opts.NoSync, _ = strconv.ParseBool(v[0])
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case "nowritemerge":
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opts.NoWriteMerge, _ = strconv.ParseBool(v[0])
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case "openfilescachecapacity":
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opts.OpenFilesCacheCapacity, _ = strconv.Atoi(v[0])
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case "readonly":
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opts.ReadOnly, _ = strconv.ParseBool(v[0])
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case "strict":
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val, _ := strconv.Atoi(v[0])
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opts.Strict = opt.Strict(val)
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case "writebuffer":
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opts.WriteBuffer, _ = strconv.Atoi(v[0])
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case "writel0pausetrigger":
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opts.WriteL0PauseTrigger, _ = strconv.Atoi(v[0])
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case "writel0slowdowntrigger":
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opts.WriteL0SlowdownTrigger, _ = strconv.Atoi(v[0])
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case "clientname":
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db.name = append(db.name, v[0])
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}
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}
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var err error
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db.db, err = leveldb.OpenFile(dataDir, opts)
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if err != nil {
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if !errors.IsCorrupted(err) {
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if strings.Contains(err.Error(), "resource temporarily unavailable") {
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err = fmt.Errorf("unable to lock level db at %s: %w", dataDir, err)
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return nil, err
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}
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err = fmt.Errorf("unable to open level db at %s: %w", dataDir, err)
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return nil, err
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}
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db.db, err = leveldb.RecoverFile(dataDir, opts)
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}
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if err != nil {
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return nil, err
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}
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for _, name := range db.name {
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m.LevelDBConnections[name] = db
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}
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db.count++
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return db.db, nil
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}
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