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👈 Back to README

Deployment & Hosting

Test Pilot experiments are hosted on testpilot.firefox.com which lets them get installed in Firefox with a minimal amount of user prompting and warning messages. The process of getting add-ons on testpilot.firefox.com is documented below.

tl;dr The Experiment Requirements

Your repository must use a branch called production to hold the code you want to deploy.

Your repository must include a npm run package script which, when run, will build the add-on and leave it in a file named addon.xpi in the root directory.

Your add-on must use a custom update URL. Examples follow, replace %ID% with your add-on's ID:

install.rdf

<em:updateURL>https://testpilot.firefox.com/files/%ID%/updates.json</em:updateURL>

manifest.json

"applications": {
  "gecko": {
    "id": "%ID%",
    "update_url": "https://testpilot.firefox.com/files/%ID%/updates.json"
  }
},

You must add --self-hosted if you run the add-ons linter. This is often an npm command in package.json. For example:

package.json

"scripts": {
  "lint:addon": "addons-linter build/addon --self-hosted",
...
}

The bigger picture

The full publishing flow is as follows:

  1. An experiment maintainer commits to the production branch
  2. Mozilla's Jenkins instance sees the commit (currently polling every minute)
  3. Jenkins downloads the latest source code from the production branch and does any internal checks. These checks may include branch checks, verification that an authorized user made the commit, checks for passing tests, or other checks.
  4. Jenkins will run npm install followed by npm run package
  5. Jenkins will prepare appropriate S3 files (the signed .xpi file, a /latest/ redirect, and a new updates.json file)
  6. Jenkins will put those files into the appropriate bucket in S3 so they show up on testpilot.firefox.com and have all the right security and caching headers
  7. Notifications of progress through this flow are made on IRC