Handling different baseUrl when using firebase functions

[manwithsteelnerves]

When using firebase functions, the baseUrl is pre-fixed with the region+function name and this is dynamically added at the time of launching the cloud function.

Is there any way to handle without modifying the input spec baseUrl?

const path = req.baseUrl.concat(req.route.path);

The above code is not matching the path that was added in the spec. As we maintain different environments during development, its not possible to provide multiple schema json in init just to avoid this problem

Any solutions would be great!

[larssn]

Think I have the same problem. validate does absolutely nothing. I'm thinking it doesn't match the path.

@manwithsteelnerves Did you find a solution?

[manwithsteelnerves]

@larssn Are you using cloud functions? If so, you can try this hack.

import  { init, validate as internalValidate }  from    'openapi-validator-middleware';
init(path-to-schema, options);

export const validator = {
    validate  : () => (req: any, res: any, next: Function) => {
        req.baseUrl = req.baseUrl.replace(req.baseUrlPrefix , ""); //This is the patch

        console.time("Validate Request");
        internalValidate(req, res, next);
        console.timeEnd("Validate Request");

    }
}

We call validator.validate from our routes as a middleware call.

[larssn]

Thanks for the quick response!

We are indeed using cloud functions. However our Request object does not have a baseUrlPrefix, and the baseUrl is an empty string. Googling baseUrlPrefix doesn't yield much, is it a custom field you've made?

[larssn]

Figured it out, we had to do:

   validate  : () => (req: any, res: any, next: Function) => {
        req.baseUrl = '/v1';

        console.time("Validate Request");
        internalValidate(req, res, next);
        console.timeEnd("Validate Request");
    }

Thanks for the hint. Saved us some time!

[manwithsteelnerves]

I forgot to add how we have the baseUrlPrefix

router.use("/", async (req : express.Request, res : express.Response, next : express.NextFunction) => {
    req.locals = { context : {}};
    req.baseUrlPrefix = req.baseUrl; //Save this
    next();
});

We saved it in at very first router to avoid hardcoding :)
Sorry for not mentioning it!

[kobik]

@larssn @manwithsteelnerves glad to see you've managed.

Adding a baseUrlPrefix sounds like a legitimate feature and we'll consider adding that.

[manwithsteelnerves]

Great!
Just a small change.
Would be good if its req.locals.baseUrlPrefix