Redis Cache Improvements

[diesalbla]

This ticket aggregates the several tickets needed to transform the Google Play Backend component to the new cache workflow, as researched in the Spike ticket.

Some of the task tickets carried on by this ticket are the following ones:

• 692, to create in the domain a FullCard class, that stores all the info needed for each package by all endpoints.

• 691 A service to fetch the details of an app from Google's unofficial API.

• A new service made of atomic cache operations, done in tickets #703, #702, #700, #699, #698.

• 701 A new service to use the web scrapper to fetch the details of an app.

• 695 A process to refresh the cache and solve Pending packages.

• 693 A process that implements the new cache workflow.

[diesalbla]

At present, there is no endpoint to run the refresh cache process. To test it, you should run sbt console with the application.conf configuration file, and then paste in the Scala console the following lines:

def refreshN(num: Int) = {
  import com.fortysevendeg.extracats.taskMonad
  import com.fortysevendeg.ninecards.googleplay.processes._
  import com.fortysevendeg.ninecards.googleplay.service.free._
  import org.joda.time.DateTime
  val proc = CardsProcess.processes[JoinServices]
  val inter = new Wiring().appCardService.interpreter
  val oper = proc.searchAndResolvePending( num, DateTime.now() )
  oper.foldMap(inter)
}

Once that is done, you should then run refreshN(10).run to see the effect. The response is an object with the lists of previously pending objects that have been resolved, found to be erroneous, or kept as pending.

[diesalbla]

Here is the PR.

[franciscodr]

There are some images that don't match with the regular expression. For instance: https://lh6.ggpht.com/feGL-tOxY65KXuqCBZlwanprjq6uD2AAE_eZzpG4LDcsQfkqbhdNrisZOpYJnUWZAdo=w300

[franciscodr]

Everything works really well. Great job!