Optimises and resize images. See the production service for API information.
Running Origami Image Service requires Node.js, npm and git-lfs.
Before we can run the application, we'll need to install dependencies:
Run the application in development mode with
Now you can access the app over HTTP on port
We configure Origami Image Service using environment variables. In development, configurations are set in a
.env file. In production, these are set through Heroku config. Further documentation on the available options can be found in the Origami Service documentation.
CONTENT_API_KEY: The API key for the FT UPP Content API.
CLOUDINARY_ACCOUNT_NAME: The name of the Cloudinary account to use in image transforms.
CLOUDINARY_API_KEY: The Cloudinary API key corresponding to
CLOUDINARY_API_SECRET: The Cloudinary API secret corresponding to
CUSTOM_SCHEME_STORE: The location of the images used in custom schemes. This should be set to the base path under which images live.
CUSTOM_SCHEME_CACHE_BUST: A key used to manually cache-bust custom scheme images.
HOSTNAME: The hostname to use for tinting SVGs. This defaults to the hostname given in the request. See the trouble-shooting guide for more information.
NODE_ENV: The environment to run the application in. One of
test(for use in automated tests).
PORT: The port to run the application on.
FASTLY_PURGE_API_KEY: A Fastly API key which is used to purge URLs (when somebody POSTs to the
GRAPHITE_API_KEY: The FT's internal Graphite API key
PURGE_API_KEY: The API key to require when somebody POSTs to the
/purgeendpoint. This should be a non-memorable string, for example a UUID
REGION: The region the application is running in. One of
RELEASE_LOG_API_KEY: The change request API key to use when creating and closing release logs
RELEASE_LOG_ENVIRONMENT: The Salesforce environment to include in release logs. One of
SENTRY_DSN: The Sentry URL to send error information to
TODO: The options below are required at the moment, but are duplicates of other options above. This will be addressed once all services are using Origami Makefile.
FASTLY_API_KEY: The Fastly API key to use when purging assets. If not set, purge endpoints are not registered. This should be the same value as
FASTLY_SERVICE_ID: The Fastly service to purge assets from
API_KEY: The API key to use when purging assets. If not set, endpoints which require an API key are not registered. This should be the same value as
GRAFANA_API_KEY: The API key to use when using Grafana push/pull
The service can also be configured by sending HTTP headers, these would normally be set in your CDN config:
FT-Origami-Service-Base-Path: The base path for the service, this gets prepended to all paths in the HTML and ensures that redirects work when the CDN rewrites URLs.
FT-Origami-Api-Key: The API key for the service, this is used when calling API endpoints which are restricted to FT Origami developers.
The Origami Image Service fetches and transforms images from external hosts, such as FT APIs or any given URL. It also hosts a number of image sets directly.
To add, edit, or remove an image in one of these image sets see the
image-sets directory. Some image sets have their own
contribution.md with further guidance specific to the image set. For example see the fticon contributing guide.
Removing an image from an image set is considered a major change. To remove an image a new major version of the Origami Image Service API must be released. Therefore it's typical to deprecate images first, and remove multiple deprecated images later as a batch. To manage this each image set directory has a
deprecated.json file containing a list of images in the set which are deprecated and should be removed in the next major version of the Origami Image Service. Deprecated images are hidden on the Origami Image Service image sets page.
The tests are split into unit tests and integration tests. To run tests on your machine you'll need to install Node.js and run
npm install. Then you can run the following commands:
make test # run all the tests make test-unit # run the unit tests make test-integration # run the integration tests
You can run the unit tests with coverage reporting, which expects 90% coverage or more:
make test-unit-coverage verify-coverage
The code will also need to pass linting on CI, you can run the linter locally with:
We run the tests and linter on CI, you can view [results on CI][ci].
make test and
make lint must pass before we merge a pull request.
You can run the integration tests against a URL by setting a
HOST environment variable to the URL you want to test. This is useful for testing a Heroku application after it is deployed, which we do on CI.
HOST="https://www.example.com" make test-integration
The production (EU/US) and QA applications run on Heroku. We deploy continuously to QA via [CI][ci], you should never need to deploy to QA manually. We use a Heroku pipeline to promote QA deployments to production.
You can promote either through the Heroku interface, or by running the following command locally:
We've outlined some common issues that can occur in the running of the Image Service:
When a png image is requested, and the requested image has no alpha channel (no transparency in the image), a jpg is instead returned because it will have a smaller filesize.
Please read the purging documentation on the website.
Please contact email@example.com - There is a way to purge all images, but this will incur a large cost.
For now, restart the Heroku dynos:
heroku restart --app origami-image-service-eu heroku restart --app origami-image-service-us
If this doesn't help, then a temporary measure could be to add more dynos to the production applications, or switch the existing ones to higher performance dynos.
If you really need to deploy manually, you should only do so to QA. Production deploys should always be a promotion from QA.
You'll need to provide an API key for change request logging. You can get this from the Origami LastPass folder in the note named
Change Request API Keys. Now deploy to QA using the following:
When an SVG image is requested we rewrite the URL to go route back through the Image Service, this is to sanatize the SVG of any cross-site-scripting attack vectors and to tint the SVG if tinting has been requested. It looks something like this:
When you're running locally this won't work because Cloudinary cannot access your
localhost. The flow would look like this:
So Cloudinary responds with a
404, and you may see an error like
connect ECONNREFUSED 127.0.0.1:443. You can get around this by manually specifying a hostname in your configuration. You'll need to tell the service to rely on the QA instance for SVG tinting. Add the following to your
The Financial Times has published this software under the MIT license.