I want to restrict calls to a Feathers service method for externals calls with associateCurrentUser.
I also want to allow the server to call this service method without restricting it.
The use case is that through this service then clients use a lock table, all clients can see all locks, and occasionally the server should clear out abandoned rows in this table. Row abandonment can happen on network failures etc. When the server removes data then the normal Feathers remove events should be emitted to the clients.
I would imagine that this should be a mix of associateCurrentUser and disallow hooks but I can't even begin to experiment with this as I don't see how it would be put together.
How would one implement this, please?
Update:
I found this answer User's permissions in feathers.js API from Daff which implies that if the hook's context.params.provider is null then the call is internal, otherwise external. Can anyone confirm if this is really so in all cases, please?
It seems to be so from my own tests but I don't know if there are any special cases out there that might come and bite me down the line.
If the call is external params.provider will be set to the transport that has been used (currently either rest, socketio or primus, documented here, here and here).
If called internally on the server there is not really any magic. It will be whatever you pass as params. If you pass nothing it will be undefined if you pass (or merge with) hook.params in a hook it will be the same as what the original method was called with.
// `params` is an empty object so `params.provider` will be `undefined`
app.service('messages').find({})
// `params.provider` will be `server`
app.service('messages').find({ provider: 'server' })
// `params.provider` will be whatever the original hook was called with
function(hook) {
hook.app.service('otherservice').find(hook.params);
}