FileExists helper function for checking a file exists.

GetTarBall Path of the tarball.

NewAggregator Gives you a Aggregator.

AggregatorLocalAPILevel the current level of the local file cache.

HTTPTimeout timeout in seconds for HTTP operations.

ErrCacheLock Is thrown when aggregator's local cache is locked.

Aggregator struct representing the sample store.

Fields type (nested struct in sample type).

Sample Type.

Samples a map containing an array of avaible samples for that language i.e.