76 lines
2.8 KiB
JavaScript
76 lines
2.8 KiB
JavaScript
import assert from 'node:assert/strict';
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import test from 'node:test';
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import {
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renderPrometheusMetrics,
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sendPrometheusMetrics,
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} from '../../src/server/prometheusMetrics.js';
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const observedAt = '2026-08-08T10:00:00.000Z';
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const snapshot = {
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traffic: {
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gatewayBytes: '9007199254740993',
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proxyBytes: '3000',
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gatewayObservedAt: observedAt,
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proxyObservedAt: observedAt,
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},
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devices: [{
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id: 'dev_0011223344556677',
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alias: 'ТВ "Зал"\\основной\nэкран',
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hostname: 'tv.local',
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ip: '192.168.50.7',
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mac: '00:11:22:33:44:55',
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uploadBytes: '9007199254740993',
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downloadBytes: '100',
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trafficObservedAt: observedAt,
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proxyUploadBytes: '0',
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proxyDownloadBytes: '0',
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proxyTrafficObservedAt: null,
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}],
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};
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test('Prometheus exposition keeps exact counters, stable identity and escaped names', () => {
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const output = renderPrometheusMetrics(snapshot);
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assert.match(output, /# TYPE harbor_traffic_bytes_total counter/);
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assert.match(output, /harbor_traffic_bytes_total\{source="gateway"\} 9007199254740993/);
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assert.match(output, /harbor_device_info\{device_id="dev_0011223344556677",name="ТВ \\"Зал\\"\\\\основной\\nэкран",ip="192\.168\.50\.7"\} 1/);
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assert.match(output, /harbor_device_traffic_bytes_total\{device_id="dev_0011223344556677",source="gateway",direction="upload"\} 9007199254740993/);
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assert.doesNotMatch(output, /harbor_device_traffic_bytes_total\{[^\n]*name=/);
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assert.doesNotMatch(output, /harbor_device_traffic_bytes_total\{[^\n]*source="proxy"/);
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assert.doesNotMatch(output, /00:11:22:33:44:55/);
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assert.match(output, /harbor_device_traffic_last_observed_timestamp_seconds\{device_id="dev_0011223344556677",source="gateway"\} 1786183200/);
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assert.equal(output.endsWith('\n'), true);
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});
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test('Prometheus response uses the negotiated legacy text contract without mutating the snapshot', () => {
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const before = structuredClone(snapshot);
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const response = {
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writeHead(status, headers) {
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this.status = status;
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this.headers = headers;
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},
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end(body) {
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this.body = body;
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},
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};
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sendPrometheusMetrics(response, snapshot);
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assert.equal(response.status, 200);
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assert.equal(response.headers['content-type'], 'text/plain; version=0.0.4; charset=utf-8');
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assert.match(response.body, /harbor_device_info/);
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assert.deepEqual(snapshot, before);
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});
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test('invalid canonical counters fail the scrape instead of publishing corrupt values', () => {
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const invalid = { traffic: { gatewayBytes: 'broken', proxyBytes: '0' }, devices: [] };
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assert.throws(
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() => renderPrometheusMetrics(invalid),
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/Invalid Prometheus counter/,
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);
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assert.throws(
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() => sendPrometheusMetrics({ writeHead() { throw new Error('headers sent'); } }, invalid),
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/Invalid Prometheus counter/,
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);
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});
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