79 lines
1.7 KiB
JavaScript
79 lines
1.7 KiB
JavaScript
process.on('unhandledRejection', (reason) => {
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throw reason
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});
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const argv = require('minimist')(process.argv.slice(2));
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const get = require('lodash.get');
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const date = require('date.js');
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const timestamp = require('internet-timestamp');
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const got = require('got');
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const url = require('url');
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const conf = {
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query: argv.query,
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ago: argv.ago || '1h',
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step: argv.step || '1s',
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hostname: argv.hostname || 'localhost',
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};
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if (!conf.query) {
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console.error(`
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Usage: node metrics.js --query={metric} --step={step} --ago={ago}
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node metrics.js --query=node_memory_heap_used_bytes --query=node_memory_heap_total_bytes
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`.trim());
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process.exit(1);
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}
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// query=node_memory_heap_used_bytes&end=147989905368&step=15s
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const end = timestamp(new Date());
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const start = timestamp(date(`${conf.ago} ago`));
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Promise.all(conf.query.map((query) => {
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return got(url.format({
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protocol: 'http:',
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slashes: true,
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port: '9090',
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hostname: conf.hostname,
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pathname: '/api/v1/query_range',
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query: {
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query: query,
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end: end,
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step: conf.step,
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start: start
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}
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}));
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})).then((res) => {
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return res.reduce((sum, r) => {
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const {
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data: {
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result
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}
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} = JSON.parse(r.body);
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return result.reduce((sum, inst) => {
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const {
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values,
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metric: {
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instance,
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job,
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__name__
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}
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} = inst;
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const oldJob = get(sum, job, {});
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const oldQuery = get(sum, `${job}.${__name__}`, {});
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return Object.assign(sum, {
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[job]: Object.assign(oldJob, {
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[__name__]: Object.assign(oldQuery, {
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[instance]: values
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})
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})
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})
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}, sum);
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}, {});
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}).then((res) => {
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console.log(JSON.stringify(res, null, 2));
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});
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