d9e84812ff
- Core library with SVG and PNG generation - CLI tool with generate and batch commands - Cross-platform path handling for Windows compatibility - Comprehensive test suite with integration tests
132 lines
3.5 KiB
Go
132 lines
3.5 KiB
Go
package engine
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import (
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"fmt"
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"strconv"
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"sync/atomic"
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lru "github.com/hashicorp/golang-lru/v2"
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"github.com/ungluedlabs/go-jdenticon/internal/constants"
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)
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// CacheMetrics holds cache performance metrics using atomic operations for efficiency
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type CacheMetrics struct {
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hits int64 // Use atomic operations, no mutex needed
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misses int64 // Use atomic operations, no mutex needed
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}
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// GetHits returns the number of cache hits
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func (m *CacheMetrics) GetHits() int64 {
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return atomic.LoadInt64(&m.hits)
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}
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// GetMisses returns the number of cache misses
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func (m *CacheMetrics) GetMisses() int64 {
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return atomic.LoadInt64(&m.misses)
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}
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// recordHit records a cache hit atomically
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func (m *CacheMetrics) recordHit() {
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atomic.AddInt64(&m.hits, 1)
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}
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// recordMiss records a cache miss atomically
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func (m *CacheMetrics) recordMiss() {
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atomic.AddInt64(&m.misses, 1)
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}
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// cacheKey generates a cache key from hash and size
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func (g *Generator) cacheKey(hash string, size float64) string {
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// Use a simple concatenation approach for better performance
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// Convert float64 size to string with appropriate precision
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return hash + ":" + strconv.FormatFloat(size, 'f', 1, 64)
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}
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// ClearCache removes all entries from the cache and resets metrics
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func (g *Generator) ClearCache() {
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g.mu.Lock()
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defer g.mu.Unlock()
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g.cache.Purge()
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// Reset metrics
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atomic.StoreInt64(&g.metrics.hits, 0)
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atomic.StoreInt64(&g.metrics.misses, 0)
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}
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// GetCacheSize returns the number of items currently in the cache
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func (g *Generator) GetCacheSize() int {
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g.mu.RLock()
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defer g.mu.RUnlock()
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return g.cache.Len()
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}
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// GetCacheCapacity returns the maximum number of items the cache can hold
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func (g *Generator) GetCacheCapacity() int {
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g.mu.RLock()
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defer g.mu.RUnlock()
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// LRU cache doesn't expose capacity, return the configured capacity from config
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return g.config.CacheSize
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}
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// GetCacheMetrics returns the cache hit and miss counts
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func (g *Generator) GetCacheMetrics() (hits int64, misses int64) {
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return g.metrics.GetHits(), g.metrics.GetMisses()
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}
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// SetConfig updates the generator's color configuration and clears the cache
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func (g *Generator) SetConfig(colorConfig ColorConfig) {
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g.mu.Lock()
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defer g.mu.Unlock()
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g.config.ColorConfig = colorConfig
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g.cache.Purge() // Clear cache since config changed
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}
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// SetGeneratorConfig updates the generator's configuration, including cache size
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func (g *Generator) SetGeneratorConfig(config GeneratorConfig) error {
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g.mu.Lock()
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defer g.mu.Unlock()
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// Validate cache size
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if config.CacheSize <= 0 {
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return fmt.Errorf("jdenticon: engine: invalid cache size: %d", config.CacheSize)
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}
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// Create new cache with updated size if necessary
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if config.CacheSize != g.config.CacheSize {
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newCache, err := lru.New[string, *Icon](config.CacheSize)
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if err != nil {
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return fmt.Errorf("jdenticon: engine: failed to create new cache: %w", err)
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}
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g.cache = newCache
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} else {
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// Same cache size, just clear existing cache
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g.cache.Purge()
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}
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g.config = config
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// Update resolved max icon size
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if config.MaxIconSize > 0 {
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g.maxIconSize = config.MaxIconSize
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} else {
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g.maxIconSize = constants.DefaultMaxIconSize
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}
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return nil
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}
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// GetConfig returns the current color configuration
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func (g *Generator) GetConfig() ColorConfig {
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g.mu.RLock()
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defer g.mu.RUnlock()
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return g.config.ColorConfig
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}
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// GetGeneratorConfig returns the current generator configuration
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func (g *Generator) GetGeneratorConfig() GeneratorConfig {
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g.mu.RLock()
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defer g.mu.RUnlock()
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return g.config
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}
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