/// <summary>
/// Class for helping you to construct a caching pipeline engine instance with the correct context and initialization objects
/// </summary>
/// <param name="cacheProgress">The cache that will be run</param>
/// <param name="ignorePermissionWindow">Set to true to ignore the CacheProgress.PermissionWindow (if any)</param>
/// <param name="providerIfAny">The strategy for figuring out what dates to load the cache with e.g. failed cache fetches or new jobs from head of que?</param>
/// <param name="throwIfNoPipeline"></param>
public CachingPipelineUseCase(ICacheProgress cacheProgress, bool ignorePermissionWindow = false, ICacheFetchRequestProvider providerIfAny = null, bool throwIfNoPipeline = true)
{
_cacheProgress = cacheProgress;
_providerIfAny = providerIfAny;
//if there is no permission window or we are ignoring it
if (ignorePermissionWindow || cacheProgress.PermissionWindow_ID == null)
{
_permissionWindow = new SpontaneouslyInventedPermissionWindow(_cacheProgress);
}
else
{
_permissionWindow = cacheProgress.PermissionWindow;
}
if (_providerIfAny == null)
{
_providerIfAny = new CacheFetchRequestProvider(_cacheProgress)
{
PermissionWindow = _permissionWindow
};
}
_pipeline = _cacheProgress.Pipeline;
if (_pipeline == null && throwIfNoPipeline)
{
throw new Exception("CacheProgress " + _cacheProgress + " does not have a Pipeline configured on it");
}
AddInitializationObject(_cacheProgress.Repository);
// Get the LoadDirectory for the engine initialization
var lmd = _cacheProgress.LoadProgress.LoadMetadata;
if (string.IsNullOrWhiteSpace(lmd.LocationOfFlatFiles))
{
if (throwIfNoPipeline)
{
throw new Exception("LoadMetadata '" + lmd + "' does not have a Load Directory specified, cannot create ProcessingPipelineUseCase without one");
}
}
else
{
AddInitializationObject(new LoadDirectory(lmd.LocationOfFlatFiles));
}
AddInitializationObject(_providerIfAny);
AddInitializationObject(_permissionWindow);
GenerateContext();
}
public void PreInitialize(ICacheFetchRequestProvider value, IDataLoadEventListener listener)
{
RequestProvider = value;
}
