When using namespaces, the 'default' namespace is a little special in
that we wanted the option for all our URLs to stay the same when using
namespaces if you are using the default namespace, with the option of
also being able to explicitly specify `~default` as a namespace.
In other words both `ui/services/service-name` and
`ui/~default/services/service-name` show the same thing.
This means that if you switch between OSS and Enterprise, all of your
URLs stay the same, but you can still specifically link to the default
namespace itself.
Our routing configuration is duplicated in order to achieve this:
```
- :dc
- :service
- :kv
- :edit
- :nspace
- :dc
- :service
- :kv
- :edit
```
Secondly, ember routing resolves/matches routes in the order that you specify
them, unless, its seems, when using wildcard routes, like we do in the
KV area.
When not using the wildcard routes the above routing configuration
resolves/matches a `/dc-1/kv/service` to the `dc.kv.edit` route correctly
(dc:dc-1, kv:services), that route having been configured in a higher
priority than the nspace routes.
However when configured with wildcards (required in the KV area), note
the asterisk below:
```
- :dc
:service
- :kv
- *edit
- :nspace
- :dc
- :service
- :kv
- *edit
```
Given something like `/dc-1/kv/services` the router instead matches the
`nspace.dc.service` (nspace:dc-1, dc:kv, service:services) route first even
though the `dc.kv.edit` route should still match first.
Changing the `dc.kv.edit` route back to use a non-wildcard route
(:edit instead of *edit), returns the router to match the routes in the
correct order.
In order to work around this, we catch any incorrectly matched routes
(those being directed to the nspace Route but not having a `~`
character in the nspace parameter), and then recalculate the correct
route name and parameters. Lastly we use this recalculated route to
direct the user/app to the correct route.
This route recalcation requires walking up the route to gather up all of
the required route parameters, and although this feels like something
that could already exist in ember, it doesn't seem to. We had already
done a lot of this work a while ago when implementing our `href-mut`
helper. This commit therefore repurposes that work slighlty and externalizes
it outside of the helper itself into a more usable util so we can import
it where we need it. Tests have been added before refactoring it down
to make the code easier to follow.
In 858b05fc31 (diff-46ef88aa04507fb9b039344277531584)
we removed encoding values in pathnames as we thought they were
eventually being encoded by `ember`. It looks like this isn't the case.
Turns out sometimes they are encoded sometimes they aren't. It's complicated.
If at all possible refer to the PR https://github.com/hashicorp/consul/pull/5206.
It's related to the difference between `dynamic` routes and `wildcard` routes.
Partly related to this is a decision on whether we urlencode the slashes within service names or not. Whilst historically we haven't done this, we feel its a good time to change this behaviour, so we'll also be changing services to use dynamic routes instead of wildcard routes. So service links will then look like /ui/dc-1/services/application%2Fservice rather than /ui/dc-1/services/application/service
Here, we define our routes in a declarative format (for the moment at least JSON) outside of Router.map, and loop through this within Router.map to set all our routes using the standard this.route method. We essentially configure our Router from the outside. As this configuration is now done declaratively outside of Router.map we can also make this data available to href-to and paramsFor, allowing us to detect wildcard routes and therefore apply urlencoding/decoding.
Where I mention 'conditionally' below, this is detection is what is used for the decision.
We conditionally add url encoding to the `{{href-to}}` helper/addon. The
reasoning here is, if we are asking for a 'href/url' then whatever we
receive back should always be urlencoded. We've done this by reusing as much
code from the original `ember-href-to` addon as possible, after this
change every call to the `{{href-to}}` helper will be urlencoded.
As all links using `{{href-to}}` are now properly urlencoded. We also
need to decode them in the correct place 'on the other end', so..
We also override the default `Route.paramsFor` method to conditionally decode all
params before passing them to the `Route.model` hook.
Lastly (the revert), as we almost consistently use url params to
construct API calls, we make sure we re-encode any slugs that have been
passed in by the user/developer. The original API for the `createURL`
function was to allow you to pass values that didn't need encoding,
values that **did** need encoding, followed by query params (which again
require url encoding)
All in all this should make the entire ember app url encode/decode safe.
John Cowen