stats

type Delta struct {
	MemoryDelta    int64  // Can be negative if memory freed
	CPUDeltaUsec   uint64 // Always positive (cumulative)
	DiskReadBytes  uint64 // Disk read bytes delta
	DiskWriteBytes uint64 // Disk write bytes delta
	DiskReadOps    uint64 // Read I/O operations delta
	DiskWriteOps   uint64 // Write I/O operations delta
}

type Reader interface {
	// ReadStats returns current resource metrics for the container.
	ReadStats() (*Stats, error)
	// Close releases any resources held by the reader.
	Close() error
	// Type returns the reader implementation type for logging.
	Type() string // "cgroup" or "docker"
}

type Stats struct {
	Memory       uint64 // Current memory usage (bytes)
	CPUUsage     uint64 // CPU usage (microseconds, cumulative)
	DiskRead     uint64 // Disk read (bytes, cumulative)
	DiskWrite    uint64 // Disk write (bytes, cumulative)
	DiskReadOps  uint64 // Disk read operations (cumulative)
	DiskWriteOps uint64 // Disk write operations (cumulative)
}