BREAKING CHANGE: This removes the
GET /api/admin/projects/{project}/features/{featureName}/variants
PATCH /api/admin/projects/{project}/features/{featureName}/variants
PUT /api/admin/projects/{project}/features/{featureName}/variants
endpoints
Users should move to environment or strategy specific variant methods
rather than feature level variant methods.
Now we can receive custom metrics, return those for UI and have extra
prometheus endpoint for it.
---------
Co-authored-by: Christopher Kolstad <chriswk@getunleash.io>
Vitest Pros:
* Automated failing test comments on github PRs
* A nice local UI with incremental testing when changing files (`yarn
test:ui`)
* Also nicely supported in all major IDEs, click to run test works (so
we won't miss what we had with jest).
* Works well with ESM
Vitest Cons:
* The ESBuild transformer vitest uses takes a little longer to transform
than our current SWC/jest setup, however, it is possible to setup SWC as
the transformer for vitest as well (though it only does one transform,
so we're paying ~7-10 seconds instead of ~ 2-3 seconds in transform
phase).
* Exposes how slow our tests are (tongue in cheek here)
We're migrating to ESM, which will allow us to import the latest
versions of our dependencies.
Co-Authored-By: Christopher Kolstad <chriswk@getunleash.io>
https://linear.app/unleash/issue/2-3406/hold-unknown-flags-in-memory-and-show-them-in-the-ui-somehow
This PR introduces a suggestion for a “unknown flags” feature.
When clients report metrics for flags that don’t exist in Unleash (e.g.
due to typos), we now track a limited set of these unknown flag names
along with the appnames that reported them. The goal is to help users
identify and clean up incorrect flag usage across their apps.
We store up to 10 unknown flag + appName combinations, keeping only the
most recent reports. Data is collected in-memory and flushed
periodically to the DB, with deduplication and merging to ensure we
don’t exceed the cap even across pods.
We were especially careful to make this implementation defensive, as
unknown flags could be reported in very high volumes. Writes are
batched, deduplicated, and hard-capped to avoid DB pressure.
No UI has been added yet — this is backend-only for now and intended as
a step toward better visibility into client misconfigurations.
I would suggest starting with a simple banner that opens a dialog
showing the list of unknown flags and which apps reported them.
<img width="497" alt="image"
src="https://github.com/user-attachments/assets/b7348e0d-0163-4be4-a7f8-c072e8464331"
/>
In this PR I integrate the Unleash React SDK with the Admin UI.
We also take advantage of Unleash Hosted Edge behind the scenes with
multiple regions to get the evaluations close to the end user.
As part of preparation for ESM and node/TSC updates, this PR will make
Unleash build with strictNullChecks set to true, since that's what's in
our tsconfig file. Hence, this PR also removes the `--strictNullChecks
false` flag in our compile tasks in package.json.
TL;DR - Clean up your code rather than turning off compiler security
features :)
## About the changes
Moved Open API validation handler to the controller layer to reuse on
all services such as project and segments, and also removed unnecessary
middleware at the top level, `app.ts`, and method, `useErrorHandler` in
`openapi-service.ts`.
### Important files
#### Before
<img width="1510" alt="1 Before"
src="https://github.com/user-attachments/assets/96ac245d-92ac-469e-a097-c6c0b78d0def">
Express cant' parse the path parameter because it doesn't be specified
on the `use` method. Therefore, it returns `undefined` as an error
message.
#### After
<img width="1510" alt="2 After"
src="https://github.com/user-attachments/assets/501dae6c-fef5-4e77-94c3-128a9f7210da">
Express can parse the path parameter because I change to specify it on
the controller layer. Accordingly, it returns `test`.
This PR:
- conditionally deprecates the project health report endpoint. We only
use this for technical debt dashboard that we're removing. Now it's
deprecated once you turn the simplifiy flag on.
- extracts the calculate project health function into the project health
functions file in the appropriate domain folder. That same function is
now shared by the project health service and the project status service.
For the last point, it's a little outside of how we normally do things,
because it takes its stores as arguments, but it slots in well in that
file. An option would be to make a project health read model and then
wire that up in a couple places. It's more code, but probably closer to
how we do things in general. That said, I wanted to suggest this because
it's quick and easy (why do much work when little work do trick?).
## About the changes
- Remove `idNumberMiddleware` method and change to use `parameters`
field in `openApiService.validPath` method for the flexibility.
- Remove unnecessary `Number` type converting method and change them to
use `<{id: number}>` to specify the type.
### Reference
The changed response looks like the one below.
```JSON
{
"id":"8174a692-7427-4d35-b7b9-6543b9d3db6e",
"name":"BadDataError",
"message":"Request validation failed: your request body or params contain invalid data. Refer to the `details` list for more information.",
"details":[
{
"message":"The `/params/id` property must be integer. You sent undefined.",
"path":"/params/id"
}
]
}
```
I think it might be better to customize the error response, especially
`"You sent undefined."`, on another pull request if this one is
accepted. I prefer to separate jobs to divide the context and believe
that it helps reviewer easier to understand.
## About the changes
Our stats are used for many places and many times to publish prometheus
metrics and some other things.
Some of these queries are heavy, traversing all tables to calculate
aggregates.
This adds a feature flag to be able to memoize 1 minute (by default) how
long to keep the calculated values in memory.
We can use the key of the function to individually control which ones
are memoized or not and for how long using a numeric variant.
Initially, this will be disabled and we'll test in our instances first
We do some validation on flag names, but there's some cases that slip
through. These are some cases that we should handle better.
With `..` as a name, you can't go into the flag in Unleash and you can't
activate any environments because the it is interpreted as "go up a
level".
https://linear.app/unleash/issue/2-2787/add-openai-api-key-to-our-configuration
Adds the OpenAI API key to our configuration and exposes a new
`unleashAIAvailable` boolean in our UI config to let our frontend know
that we have configured this. This can be used together with our flag to
decide whether we should enable our experiment for our users.
