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heroku-dyno-metadata
Advanced tools
Access Heroku Dyno metadata in Node.js and expose them as HTTP headers.
# Using npm
npm install heroku-dyno-metadata
# Using yarn
yarn add heroku-dyno-metadata
Dyno Metadata is an Heroku Labs feature at the moment and have to be enabled this way:
heroku labs:enable runtime-dyno-metadata -a <app name>
import express from 'express';
import { middleware as herokuDynoMetadata } from 'heroku-dyno-metadata';
const app = express().use(herokuDynoMetadata());
// Responses will have the following example headers:
//
// X-Heroku-App-Id: 2d9a4aaf-1023-4520-8ed1-d6fda6fd86d6
// X-Heroku-App-Name: heroku-dyno-metadata
// X-Heroku-Dyno-Id: d1576980-3f3e-4593-b7b9-6c2fbf874e07
// X-Heroku-Dyno-Name: web.1
// X-Heroku-Slug-Commit: cbdae5a0cd1f5a0f0a67b3d82844ceb33d0caed7
// X-Heroku-Slug-Description: Deploy cbdae5a
// X-Heroku-Release-Created-at: 2016-04-08T06:39:53Z
// X-Heroku-Release-Version: v832
metadata
This function is exposed as the default
export.
Use import metadata from 'heroku-dyno-metadata'
or require('heroku-dyno-metadata')
.
Returns an object containing Heroku Dyno metadata, keys are camel-cased.
Example:
console.log(metadata.dynoName);
// "web.1"
middleware([keys])
Use import { middleware } from 'heroku-dyno-metadata'
or require('heroku-dyno-metadata').middleware
.
Returns an Express middleware.
The optional keys
argument allows picking headers exposed. Default is all headers available (listed below).
Example:
middleware(['x-heroku-app-id', 'x-heroku-dyno-id']);
Header | Description | Example |
---|---|---|
x-heroku-app-id | The unique identifier for the application | 9daa2797-e49b-4624-932f-ec3f9688e3da |
x-heroku-app-name | The application name | example-app |
x-heroku-dyno-id | The dyno identifier | 1vac4117-c29f-4312-521e-ba4d8638c1ac |
x-heroku-dyno-name | The dyno name | web.1 |
x-heroku-slug-commit | The commit hash for current release | 2c3a0b24069af49b3de35b8e8c26765c1dba9ff0 |
x-heroku-slug-description | The commit description for current release | Deploy 2c3a0b2 |
x-heroku-release-created-at | The time and date the release was created | 2015/04/02 18:00:42 |
x-heroku-release-version | The version of current release | v42 |
More information: Heroku Labs: Dyno Metadata
MIT © Gowento
FAQs
Expose Heroku Dyno metadata as HTTP headers
The npm package heroku-dyno-metadata receives a total of 1,801 weekly downloads. As such, heroku-dyno-metadata popularity was classified as popular.
We found that heroku-dyno-metadata demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 4 open source maintainers collaborating on the project.
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