mirror of
https://github.com/Rain-kl/OpenFlare.git
synced 2026-09-29 22:06:38 +08:00
ryan
f2ab94501c
- Relocated go.mod and go.sum into backend/ root directory - Stripped redundant backend/ segments from all Go imports (github.com/Rain-kl/Wavelet/...) - Unified Makefile, swagger, and build-test to execute in backend/ module context - Ensured 100% build-test, code-check, format, and swagger pass
99 lines
2.9 KiB
Go
99 lines
2.9 KiB
Go
// Copyright 2026 Arctel.net
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// SPDX-License-Identifier: Apache-2.0
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// Package diskcache wraps the generic pkg/cache/disk to provide database configuration integration.
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package diskcache
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import (
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"context"
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"strconv"
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"sync"
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"time"
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pkgcache "github.com/Rain-kl/Wavelet/pkg/cache/disk"
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database "github.com/Rain-kl/Wavelet/plugins/infra/database"
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)
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// Status represents the runtime cache statistics.
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type Status = pkgcache.Status
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const (
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defaultCacheDir = "uploads/diskcache"
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defaultMaxSizeMB = 100
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defaultTTLMinutes = 60
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defaultCleanupInterval = 10
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// DefaultExpiration applies the cache-wide default TTL.
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DefaultExpiration = pkgcache.DefaultExpiration
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// NoExpiration stores the item without a TTL. Size limits and LRU eviction still apply.
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NoExpiration = pkgcache.NoExpiration
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)
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// ErrCacheMiss represents a cache miss.
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var ErrCacheMiss = pkgcache.ErrCacheMiss
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// DiskCache is a wrapper around the generic pkg/diskcache that integrates with the DB for configs.
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type DiskCache struct {
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*pkgcache.Cache
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}
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var (
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globalCache *DiskCache
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globalCacheOnce sync.Once
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)
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// GetGlobalCache returns the global singleton DiskCache instance.
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func GetGlobalCache() *DiskCache {
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globalCacheOnce.Do(func() {
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pureCache := pkgcache.New(defaultCacheDir)
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globalCache = &DiskCache{pureCache}
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// Load initial configs from database
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globalCache.ReloadConfig(context.Background())
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// Start background routine to clean expired items every 10 minutes
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go globalCache.StartCleanupWorker(defaultCleanupInterval * time.Minute)
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})
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return globalCache
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}
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// New creates a new DiskCache wrapper.
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func New(basePath string) *DiskCache {
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return &DiskCache{pkgcache.New(basePath)}
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}
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// ReloadConfig reloads policies from database configs dynamically.
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func (c *DiskCache) ReloadConfig(ctx context.Context) {
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// Ensure DB is initialized before querying
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if database.DB(ctx) == nil {
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return
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}
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// 1. Max Size
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maxSizeMB := int64(defaultMaxSizeMB)
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var maxVal string
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if err := database.DB(ctx).Table("w_system_configs").Where("key = ?", "disk_cache_max_size_mb").Pluck("value", &maxVal).Error; err == nil && maxVal != "" {
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if val, err := strconv.ParseInt(maxVal, 10, 64); err == nil && val > 0 {
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maxSizeMB = val
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}
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}
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// 2. Default TTL
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ttlMinutes := int64(defaultTTLMinutes)
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var ttlVal string
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if err := database.DB(ctx).Table("w_system_configs").Where("key = ?", "disk_cache_ttl_minutes").Pluck("value", &ttlVal).Error; err == nil && ttlVal != "" {
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if val, err := strconv.ParseInt(ttlVal, 10, 64); err == nil && val >= 0 {
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ttlMinutes = val
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}
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}
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// 3. LRU Enabled
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lruEnabled := true
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var lruVal string
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if err := database.DB(ctx).Table("w_system_configs").Where("key = ?", "disk_cache_lru_enabled").Pluck("value", &lruVal).Error; err == nil && lruVal != "" {
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if val, err := strconv.ParseBool(lruVal); err == nil {
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lruEnabled = val
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}
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}
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c.UpdatePolicy(maxSizeMB, ttlMinutes, lruEnabled)
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}
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