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with_metrics.go
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with_metrics.go
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// Copyright (C) 2019-2023, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package txheap
import (
"github.com/prometheus/client_golang/prometheus"
"github.com/MetalBlockchain/metalgo/ids"
"github.com/MetalBlockchain/metalgo/vms/platformvm/txs"
)
var _ Heap = (*withMetrics)(nil)
type withMetrics struct {
Heap
numTxs prometheus.Gauge
}
func NewWithMetrics(
txHeap Heap,
namespace string,
registerer prometheus.Registerer,
) (Heap, error) {
h := &withMetrics{
Heap: txHeap,
numTxs: prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: namespace,
Name: "count",
Help: "Number of transactions in the heap",
}),
}
return h, registerer.Register(h.numTxs)
}
func (h *withMetrics) Add(tx *txs.Tx) {
h.Heap.Add(tx)
h.numTxs.Set(float64(h.Heap.Len()))
}
func (h *withMetrics) Remove(txID ids.ID) *txs.Tx {
tx := h.Heap.Remove(txID)
h.numTxs.Set(float64(h.Heap.Len()))
return tx
}
func (h *withMetrics) RemoveTop() *txs.Tx {
tx := h.Heap.RemoveTop()
h.numTxs.Set(float64(h.Heap.Len()))
return tx
}