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Go's semantic import versioning requires v2+ modules to include the major version in the module path. This enables using proper version tags (v3.x.x) instead of pseudo-versions. Updated module path: code.gitcaddy.com/server/v3
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
// Copyright 2023 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package queue
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import (
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"context"
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"sync"
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"sync/atomic"
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"code.gitcaddy.com/server/v3/modules/nosql"
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"code.gitcaddy.com/server/v3/modules/queue/lqinternal"
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"gitea.com/lunny/levelqueue"
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"github.com/syndtr/goleveldb/leveldb"
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)
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type baseLevelQueueUnique struct {
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internal atomic.Pointer[levelqueue.UniqueQueue]
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conn string
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cfg *BaseConfig
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db *leveldb.DB
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mu sync.Mutex // the levelqueue.UniqueQueue is not thread-safe, there is no mutex protecting the underlying queue&set together
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}
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var _ baseQueue = (*baseLevelQueueUnique)(nil)
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func newBaseLevelQueueUnique(cfg *BaseConfig) (baseQueue, error) {
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conn, db, err := prepareLevelDB(cfg)
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if err != nil {
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return nil, err
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}
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q := &baseLevelQueueUnique{conn: conn, cfg: cfg, db: db}
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lq, err := levelqueue.NewUniqueQueue(db, []byte(cfg.QueueFullName), []byte(cfg.SetFullName), false)
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if err != nil {
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return nil, err
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}
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q.internal.Store(lq)
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return q, nil
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}
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func (q *baseLevelQueueUnique) PushItem(ctx context.Context, data []byte) error {
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c := baseLevelQueueCommon(q.cfg, &q.mu, func() baseLevelQueuePushPoper { return q.internal.Load() })
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return c.PushItem(ctx, data)
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}
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func (q *baseLevelQueueUnique) PopItem(ctx context.Context) ([]byte, error) {
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c := baseLevelQueueCommon(q.cfg, &q.mu, func() baseLevelQueuePushPoper { return q.internal.Load() })
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return c.PopItem(ctx)
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}
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func (q *baseLevelQueueUnique) HasItem(ctx context.Context, data []byte) (bool, error) {
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q.mu.Lock()
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defer q.mu.Unlock()
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return q.internal.Load().Has(data)
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}
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func (q *baseLevelQueueUnique) Len(ctx context.Context) (int, error) {
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q.mu.Lock()
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defer q.mu.Unlock()
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return int(q.internal.Load().Len()), nil
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}
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func (q *baseLevelQueueUnique) Close() error {
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q.mu.Lock()
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defer q.mu.Unlock()
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err := q.internal.Load().Close()
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q.db = nil // the db is not managed by us, it's managed by the nosql manager
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_ = nosql.GetManager().CloseLevelDB(q.conn)
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return err
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}
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func (q *baseLevelQueueUnique) RemoveAll(ctx context.Context) error {
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q.mu.Lock()
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defer q.mu.Unlock()
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lqinternal.RemoveLevelQueueKeys(q.db, []byte(q.cfg.QueueFullName))
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lqinternal.RemoveLevelQueueKeys(q.db, []byte(q.cfg.SetFullName))
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lq, err := levelqueue.NewUniqueQueue(q.db, []byte(q.cfg.QueueFullName), []byte(q.cfg.SetFullName), false)
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if err != nil {
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return err
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}
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old := q.internal.Load()
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q.internal.Store(lq)
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_ = old.Close() // Not ideal for concurrency. Luckily, the levelqueue only sets its db=nil because it doesn't manage the db, so far so good
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return nil
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}
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