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chore: update prometheus examples #2939

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Apr 30, 2022
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6 changes: 3 additions & 3 deletions .github/workflows/unit-test.yml
Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@ jobs:
packages/*/package-lock.json
experimental/packages/*/node_modules
experimental/packages/*/package-lock.json
key: node-tests-${{ runner.os }}-${{ matrix.node_version }}-${{ hashFiles('package.json', 'packages/*/package.json', 'experimental/packages/*/package.json') }}-04142022
key: node-tests-${{ runner.os }}-${{ matrix.node_version }}-${{ hashFiles('package.json', 'packages/*/package.json', 'experimental/packages/*/package.json') }}-04292022

- name: Bootstrap
run: |
Expand Down Expand Up @@ -72,7 +72,7 @@ jobs:
packages/*/package-lock.json
experimental/packages/*/node_modules
experimental/packages/*/package-lock.json
key: browser-tests-${{ runner.os }}-${{ hashFiles('package.json', 'packages/*/package.json', 'experimental/packages/*/package.json') }}-04142022
key: browser-tests-${{ runner.os }}-${{ hashFiles('package.json', 'packages/*/package.json', 'experimental/packages/*/package.json') }}-04292022

- name: Bootstrap
run: |
Expand Down Expand Up @@ -112,7 +112,7 @@ jobs:
packages/*/package-lock.json
experimental/packages/*/node_modules
experimental/packages/*/package-lock.json
key: webworker-tests-${{ runner.os }}-${{ hashFiles('package.json', 'packages/*/package.json', 'experimental/packages/*/package.json') }}-04142022
key: webworker-tests-${{ runner.os }}-${{ hashFiles('package.json', 'packages/*/package.json', 'experimental/packages/*/package.json') }}-04292022

- name: Bootstrap
run: |
Expand Down
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32 changes: 0 additions & 32 deletions examples/prometheus/index.js

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7 changes: 7 additions & 0 deletions experimental/examples/.eslintrc.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
module.exports = {
"env": {
"mocha": true,
"node": true
},
...require('../../eslint.config.js')
}
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38 changes: 38 additions & 0 deletions experimental/examples/prometheus/index.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,38 @@
'use strict';

const { DiagConsoleLogger, DiagLogLevel, diag } = require('@opentelemetry/api');
const { MeterProvider } = require('@opentelemetry/sdk-metrics-base');
const { PrometheusExporter } = require('@opentelemetry/exporter-prometheus');

// Optional and only needed to see the internal diagnostic logging (during development)
diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.DEBUG);

const { endpoint, port } = PrometheusExporter.DEFAULT_OPTIONS;

const exporter = new PrometheusExporter({}, () => {
console.log(
`prometheus scrape endpoint: http://localhost:${port}${endpoint}`,
);
});

// Creates MeterProvider and installs the exporter as a MetricReader
const meterProvider = new MeterProvider();
meterProvider.addMetricReader(exporter);
const meter = meterProvider.getMeter('example-prometheus');

// Creates metric instruments
const requestCounter = meter.createCounter('requests', {
description: 'Example of a Counter',
});

const upDownCounter = meter.createUpDownCounter('test_up_down_counter', {
description: 'Example of a UpDownCounter',
});

const attributes = { pid: process.pid, environment: 'staging' };

// Record metrics
setInterval(() => {
requestCounter.add(1, attributes);
upDownCounter.add(Math.random() > 0.5 ? 1 : -1, attributes);
}, 1000);
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
{
"name": "prometheus-example",
"version": "0.25.0",
"version": "0.28.0",
"description": "Example of using @opentelemetry/sdk-metrics-base and @opentelemetry/exporter-prometheus",
"main": "index.js",
"scripts": {
Expand All @@ -10,7 +10,7 @@
"license": "Apache-2.0",
"dependencies": {
"@opentelemetry/api": "^1.0.2",
"@opentelemetry/exporter-prometheus": "0.25.0",
"@opentelemetry/sdk-metrics-base": "0.25.0"
"@opentelemetry/exporter-prometheus": "0.28.0",
"@opentelemetry/sdk-metrics-base": "0.28.0"
}
}

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