Errors on Offline app

[seromenho]

This is my proposal to #279. Any thoughts/suggestions to improve or make it different are welcome.
Thanks.

Description

When calling _makeRequest(or custom transport) set the onError function to store the event if we have the feature enabled.
This means the feature can also be used on the custom transport if we use the passed onError.
The queue is processed once we initialise it or on the online event or a custom one set with onlineEventName.
Processing the queue means call again _sendProcessedPayload with the stored error data.

New options

• allowOfflineStorage - Boolean false by default.
• onlineEventName- Event name if you want to specify some other than the online(default) to trigger the process queue while still on the app. Eg: You don't use some other event on your app to say you have connection.

TODO

If this works for you I'm missing documentation and tests.

[benvinegar]

Hey, so our feeling is that this should be a plugin, which we'd be happy to make happen by translating this patch to a plugin form.

[seromenho]

Hey,
I'm happy with that.
Let me know if I can help.
Thank you.

[kamilogorek]

@seromenho still interested in tackling this issue?

[seromenho]

@kamilogorek yes. Let me know what I can do to help.
Thank you.

[kamilogorek]

Your implementation itself is very good, the thing that has to be done is extracting it to a separate file, wrapping it in exported function and hooking into Raven using addPlugin method https://github.com/getsentry/raven-js/blob/master/src/raven.js#L507-L516

The best implementation you can base on is React Native plugin https://github.com/getsentry/raven-js/blob/master/plugins/react-native.js as it shows how to add dataCallback to store the data before sending, how to drain those events and how to register a plugin.

Also allowOfflineStorage won't be necessary anymore, as every plugin is opt-in.

Let me know if you need any more pointers or feedback.

Cheers!

[seromenho]

Closing this one. Followed suggestions and created a plugin from this.

[CombeeMike]

Is this plugin somewhere publicly available?

[squallstar]

@CombeeMike #1165