metrics

var (
	// RecordsProcessed tracks total records processed
	RecordsProcessed = promauto.NewCounterVec(
		prometheus.CounterOpts{
			Name: "nebula_records_processed_total",
			Help: "Total number of records processed",
		},
		[]string{"source", "destination", "status"},
	)

	// ProcessingLatency tracks processing latency in nanoseconds
	ProcessingLatency = promauto.NewHistogramVec(
		prometheus.HistogramOpts{
			Name: "nebula_processing_latency_nanoseconds",
			Help: "Processing latency in nanoseconds",
			Buckets: []float64{
				100,
				1000,
				10000,
				100000,
				1e6,
				1e7,
				1e8,
				1e9,
			},
		},
		[]string{"operation", "source", "destination"},
	)

	// MemoryAllocated tracks memory allocations
	MemoryAllocated = promauto.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "nebula_memory_allocated_bytes",
			Help: "Memory allocated in bytes",
		},
		[]string{"component"},
	)

	// ActiveConnections tracks active connections
	ActiveConnections = promauto.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "nebula_active_connections",
			Help: "Number of active connections",
		},
		[]string{"type", "destination"},
	)

	// QueueDepth tracks queue depths
	QueueDepth = promauto.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "nebula_queue_depth",
			Help: "Current queue depth",
		},
		[]string{"queue_name"},
	)

	// GCPauseDuration tracks GC pause durations
	GCPauseDuration = promauto.NewHistogram(
		prometheus.HistogramOpts{
			Name: "nebula_gc_pause_duration_nanoseconds",
			Help: "GC pause duration in nanoseconds",
			Buckets: []float64{
				1e3,
				1e4,
				1e5,
				1e6,
				1e7,
				1e8,
			},
		},
	)

	// Throughput tracks records per second
	Throughput = promauto.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "nebula_throughput_records_per_second",
			Help: "Current throughput in records per second",
		},
		[]string{"source", "destination"},
	)

	// AllocationRate tracks memory allocation rate
	AllocationRate = promauto.NewGauge(
		prometheus.GaugeOpts{
			Name: "nebula_memory_allocation_rate_bytes_per_second",
			Help: "Memory allocation rate in bytes per second",
		},
	)
)