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50 lines
1.8 KiB
50 lines
1.8 KiB
/*
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* Copyright 2018 Excitable Aardvark <excitableaardvark@tutanota.de>
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*
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* Licensed under the 3-Clause BSD license. See LICENSE in the project root for
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* more information.
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*/
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const Daemon = require('monero-rpc').Daemon
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const express = require('express')
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const prometheus = require('prom-client')
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const util = require('util')
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const DAEMON_HOST = process.env.DAEMON_HOST || 'http://localhost:18081'
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const Gauge = prometheus.Gauge
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const app = express()
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const daemon = new Daemon(DAEMON_HOST)
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let getInfo = util.promisify(daemon.getInfo.bind(daemon))
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let getLastBlockHeader = util.promisify(daemon.getLastBlockHeader.bind(daemon))
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const difficulty = new Gauge({ name: 'monerod_block_difficulty', help: 'Last block difficulty' })
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const incomingConnections = new Gauge({ name: 'monerod_connections_incoming', help: 'Number of incoming connections' })
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const mempoolSize = new Gauge({ name: 'monerod_tx_mempool', help: 'Number of transactions in the mempool' })
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const outgoingConnections = new Gauge({ name: 'monerod_connections_outgoing', help: 'Number of outgoing connections' })
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const reward = new Gauge({ name: 'monerod_block_reward', help: 'Last block reward' })
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const txCount = new Gauge({ name: 'monerod_tx_chain', help: 'Number of transactions in total' })
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app.get('/metrics', (req, res) => {
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Promise.all([
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getInfo(),
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getLastBlockHeader()
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])
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.then(([info, header]) => {
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difficulty.set(Number(header.difficulty))
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incomingConnections.set(Number(info.incoming_connections_count))
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mempoolSize.set(Number(info.tx_pool_size))
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outgoingConnections.set(Number(info.outgoing_connections_count))
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reward.set(Number(header.reward / 1e12))
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txCount.set(Number(info.tx_count))
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res.end(prometheus.register.metrics())
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})
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.catch(e => {
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console.log(e)
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})
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})
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module.exports = app
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