retry for re-authentication

[Devon Miller]

I am using dispatch for a small REST driver to a database system.

The database system has a REST interface that issues session ids that expire after X minutes.

My driver issues http requests fine and the REST calls work.

But I would like to transparently add automatic retry to each request after the session expires.

I would like to have this inside the driver so that the programmer does not need to explicitly add retries's to their code.

How would I do this with dispatch's retry?

[Nathan Hamblen]

dispatch.retry is for requests that fail unpredictably, so I don't think
it's the right fit for what you're talking about. Instead of attempting
a request that will fail, I would track the expiration time in the db
driver interface and fetch a new session when the current time is within
some threshold of the expiration. Since this likely requires two
requests, you would flatMap the two futures.

Nathan

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[Devon Miller]

That does sound like a simpler way to do it. I'll give it a shot.