public async Task <ProjectionsInfo> CheckAndRebuildProjections(CancellationToken token)
{
var persistedProjectionsInfo = await this.LoadProjectionsInfo();
var strategy = this._targetContainer.Strategy;
var memory = new NonserializingMemoryStorageConfig();
var memoryContainer = memory.CreateNuclear(strategy).Container;
var generatedProjectionInfos = this.GeneratedProjectionInfosFromProjectors(token, memoryContainer, strategy);
var partitionedProjections = PartitionedProjectionsInfo.Partition(persistedProjectionsInfo.Infos, generatedProjectionInfos, this._storage);
this.PrintProjectionsStatus(partitionedProjections);
await this.DeleteObsolete(partitionedProjections.Obsolete, this._targetContainer);
await this.RebuildProjections(partitionedProjections.NeedRebuild, memoryContainer, token);
if (partitionedProjections.NeedRebuild.Count > 0 || partitionedProjections.Obsolete.Count > 0)
{
var newProjectionsInfo = new ProjectionsInfo();
newProjectionsInfo.Infos.UnionWith(partitionedProjections.ReadyForUse);
newProjectionsInfo.Infos.UnionWith(partitionedProjections.NeedRebuild);
await this._storage.SaveEntityAsync(this._name, newProjectionsInfo);
persistedProjectionsInfo = newProjectionsInfo;
}
return(persistedProjectionsInfo);
}
private void PrintProjectionsStatus(PartitionedProjectionsInfo partitionedProjections)
{
partitionedProjections.ReadyForUse.SelectMany(pr => pr.ViewBuckets).ForEach(b => SystemObserver.Notify("[good]\t{0} is up to date", b));
partitionedProjections.NeedRebuild.SelectMany(pr => pr.ViewBuckets).ForEach(b => SystemObserver.Notify("[warn]\t{0} needs rebuild", b));
partitionedProjections.Obsolete.SelectMany(pr => pr.ViewBuckets).ForEach(b => SystemObserver.Notify("[warn]\t{0} is obsolete", b));
}