Continuous Integration

Sentry uses a variety of continuous integration services to help ensure we don't accidentally break the application.

Travis CI

Travis CI is our primary CI system and runs our tests on every pull request and on merges to master. It is required that tests pass before changes can be merged.

Clearing Travis Cache

The "Delete all repository caches" button does NOT work.

Type the following into your browser devtools console on the Travis cache page:

Copied
Travis.__registry__._resolveCache[
  "config:environment"
].skipConfirmations = true;
btns = document.getElementsByClassName("delete-cache-icon");
i = 0;
while (i < btns.length) {
  btns[i].click();
  i++;
}

Or this works too and is prettier:

Copied
window.confirm = (m) => true;
Array.from(document.getElementsByClassName("delete-cache-icon")).map((e) =>
  e.click()
);

GitHub Actions

We use GitHub Actions to supplement front-end builds and apply automatic style fixes. We're also trialing it as a way to run acceptance tests.

Percy

Percy checks the outputs of acceptance tests and reports on changes in rendered results. See the testing chapter for more information

Freight

Freight is how we deploy our applications to staging & production.

Reverting / Rolling Back After a Bad Deploy

If you've deployed something bad, you'll need to do the following:

  • Deploy the most recently known good commit that succeeded ASAP. Keep an eye on this as deploys MUST finish, otherwise it's possible some web machines will still be stuck on the bad deploy's code.
  • Inform #team-engineering that you're rolling back a bad deploy, and that no one should deploy getsentry master until the issue is resolved.
  • Fix the issue, and get it merged into master.
  • Deploy the fix, and verify that the issue has indeed been fixed.
  • Inform #team-engineering that it is safe to deploy getsentry again.

Troubleshooting CI

You might also be interested in troubleshooting the dev environment.

Problem:

ContextualVersionConflict while installing stuff in Travis CI.

Solution:

Purge the travis cache. How? See the FAQ.

Problem:

When pushing your build to staging and you it fails the Ensure test image step on Travis.

Solution:

You probably forgot to push your branch on Sentry to GitHub.

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