cache

type BlobCache struct {
	// contains filtered or unexported fields
}

type BlobCacheIndex struct {
	Version   string                   `json:"version"` // Index format version
	Blobs     map[string]*BlobMetadata `json:"blobs"`   // digest -> metadata
	CreatedAt time.Time                `json:"created_at"`
	UpdatedAt time.Time                `json:"updated_at"`
}

type BlobMetadata struct {
	Digest     string    `json:"digest"`      // Compressed digest (cache key, with sha256: prefix)
	DiffID     string    `json:"diffid"`      // Uncompressed digest
	Size       int64     `json:"size"`        // Compressed size
	ImageRefs  []string  `json:"image_refs"`  // Source image references (multiple images may share this blob)
	LastAccess time.Time `json:"last_access"` // Last time this blob was accessed
	CreatedAt  time.Time `json:"created_at"`  // When this blob was first cached
}

type CacheStats struct {
	TotalSize   int64 // Total size of all cached layers
	LayerCount  int   // Number of cached layers
	CacheHits   int64 // Number of cache hits (not persisted)
	CacheMisses int64 // Number of cache misses (not persisted)
	LastPruneAt time.Time
}

type LayerCache struct {
	// contains filtered or unexported fields
}

type LayerMetadata struct {
	DiffID     string    `json:"diffid"`      // Uncompressed digest (cache key)
	Digest     string    `json:"digest"`      // Compressed digest
	Size       int64     `json:"size"`        // Uncompressed size
	ImageRef   string    `json:"image_ref"`   // Source image reference (e.g., "alpine:3.20")
	LastAccess time.Time `json:"last_access"` // Last time this layer was accessed
	CreatedAt  time.Time `json:"created_at"`  // When this layer was first cached
}