1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

use lazy_static::lazy_static;
use prometheus_client::{
    metrics::histogram::Histogram,
    registry::Registry,
};
use std::default::Default;

pub struct TxPoolMetrics {
    // Attaches each Metric to the Registry
    pub registry: Registry,
    pub gas_price_histogram: Histogram,
    pub tx_size_histogram: Histogram,
}

impl Default for TxPoolMetrics {
    fn default() -> Self {
        let registry = Registry::default();

        let gas_prices = Vec::new();

        let gas_price_histogram = Histogram::new(gas_prices.into_iter());

        let tx_sizes = Vec::new();

        let tx_size_histogram = Histogram::new(tx_sizes.into_iter());

        let mut metrics = TxPoolMetrics {
            registry,
            gas_price_histogram,
            tx_size_histogram,
        };

        metrics.registry.register(
            "Tx_Gas_Price_Histogram",
            "A Histogram keeping track of all gas prices for each tx in the mempool",
            metrics.gas_price_histogram.clone(),
        );

        metrics.registry.register(
            "Tx_Size_Histogram",
            "A Histogram keeping track of the size of txs",
            metrics.tx_size_histogram.clone(),
        );

        metrics
    }
}

lazy_static! {
    pub static ref TXPOOL_METRICS: TxPoolMetrics = TxPoolMetrics::default();
}