Contentful Migration Tool

Run Contentful migrations easier.

Why another CLI?

I decided to created this CLI when I read this article: "Integrating migrations in a continuous delivery pipeline with CircleCI". I found that approach very interesting, so I decided to build something very close to that.

With this CLI you can run migrations easier and keep track of migrations that you have already run.

You can integrate this into your existing CI without any effort.

CLI usage

The official contentful-migration is a peerDependency, so it is required.

You can run directly this command:

npx -p contentful-migration@latest -p contentful-migration-tool@latest contentful-migration-tool run ./migrations

Or you can install contentful-migration and contentful-migration-tool as devDependencies and then just run:

# install dependencies
npm install --save-dev contentful-migration@latest contentful-migration-tool@latest

# run migrations
npx contentful-migration-tool run ./migrations

If you use TypeScript, you will also need ts-node to run TypeScript migrations:

# install dependencies
npm install --save-dev contentful-migration@latest contentful-migration-tool@latest ts-node

# run migrations
npx ts-node ./node_modules/.bin/contentful-migration-tool run ./migrations

Remember to set the required environment variables before running the above commands.

Options

Environment Variables

• CONTENT_MANAGEMENT_TOKEN - required - Contentful Content Management Token. You can create one from the section API keys under your space settings.

• SPACE_ID - required - Contentful Space ID. You can get the Space ID from the section General settings under your space settings. The Space ID is also visibile in the url.

• ENVIRONMENT_ID - required - Contentful Environment ID.

Docker usage

With this Docker image you don't even need Node.js

docker run --rm --tty --name contentful-migration-runner -e CONTENT_MANAGEMENT_TOKEN=$CONTENT_MANAGEMENT_TOKEN -e SPACE_ID=$SPACE_ID -e ENVIRONMENT_ID=$ENVIRONMENT_ID -v $(pwd)/migrations:/app/migrations marcomontalbano/contentful-migration

Options

Environment Variables

• CONTENT_MANAGEMENT_TOKEN - required - Contentful Content Management Token. You can create one from the section API keys under your space settings.

• SPACE_ID - required - Contentful Space ID. You can get the Space ID from the section General settings under your space settings. The Space ID is also visibile in the url.

• ENVIRONMENT_ID - required - Contentful Environment ID.

Volumes

• /app/migrations - required - Migrations folder.

Arguments

• --cfmversion 4.0.0 - optional - Use this argument if you want to change the contentful-migration version. (default to latest)

Migrations folder

Either you use Docker or CLI, you should create a /migrations (or whatever name) folder. This folder will contain all your migration description files.

A migration description file is a .js or .ts file that contains a migration script. This scripts are written using Contentful Migration syntax which you are already familiar with.

The filename must follow this naming convention:

<version> - <description> .ts

version starts from 1 and must be incremental.

description is used to easily recognize the purpose of the migration.

A real example can be: 1-create-author.ts

e.g. javascript

module.exports = function (migration, context) {
  const author = migration.createContentType('author');
  const name = author.createField('name');
  name.type('Symbol').required(true);
};

e.g. typescript

import { MigrationFunction } from 'contentful-migration'

const migrate: MigrationFunction = (migration) => {
  const author = migration.createContentType('author');
  const name = author.createField('name');
  name.type('Symbol').required(true);
}

export = migrate

Useful Readings

• Contentful Migration
• Contentful • CMS as code
• Contentful • Scripting migrations with the Contentful CLI