async Task <ProjectionStream> LoadProjectionStreamAsync(Type projectionType, IBlobId projectionId)
{
string projectionName = projectionType.GetContractId();
ReadResult <ProjectionVersions> result = GetProjectionVersions(projectionName);
if (result.IsSuccess)
{
ProjectionVersion liveVersion = result.Data.GetLive();
if (liveVersion is null)
{
log.Warn(() => $"Unable to find projection `live` version. ProjectionId:{projectionId} ProjectionName:{projectionName} ProjectionType:{projectionType.Name}");
return(ProjectionStream.Empty());
}
ISnapshot snapshot = null;
if (projectionType.IsSnapshotable())
{
snapshot = snapshotStore.Load(projectionName, projectionId, liveVersion);
}
else
{
snapshot = new NoSnapshot(projectionId, projectionName);
}
ProjectionStream stream = await LoadProjectionStreamAsync(projectionType, liveVersion, projectionId, snapshot);
return(stream);
}
return(ProjectionStream.Empty());
}
ProjectionStream LoadProjectionStream(Type projectionType, IBlobId projectionId)
{
string projectionName = projectionType.GetContractId();
ReadResult <ProjectionVersions> result = GetProjectionVersions(projectionName);
if (result.IsSuccess)
{
ProjectionVersion liveVersion = result.Data.GetLive();
if (liveVersion is null)
{
log.Warn(() => $"Unable to find projection `live` version. ProjectionId:{projectionId} ProjectionName:{projectionName} ProjectionType:{projectionType.Name}{Environment.NewLine}AvailableVersions:{Environment.NewLine}{result.Data.ToString()}");
return(ProjectionStream.Empty());
}
ISnapshot snapshot = null;
if (projectionType.IsSnapshotable())
{
snapshot = snapshotStore.Load(projectionName, projectionId, liveVersion);
}
else
{
snapshot = new NoSnapshot(projectionId, projectionName);
}
return(LoadProjectionStream(projectionType, liveVersion, projectionId, snapshot));
}
return(ProjectionStream.Empty());
}
ProjectionStream LoadProjectionStream(Type projectionType, IBlobId projectionId)
{
string projectionName = projectionType.GetContractId();
try
{
ProjectionVersion liveVersion = GetProjectionVersions(projectionName).GetLive();
if (ReferenceEquals(null, liveVersion))
{
log.Warn(() => $"Unable to find `live` version for projection with contract id {projectionName} and name {projectionType.Name}");
return(ProjectionStream.Empty());
}
ISnapshot snapshot = snapshotStore.Load(projectionName, projectionId, liveVersion);
ProjectionStream stream = LoadProjectionStream(projectionType, liveVersion, projectionId, snapshot);
return(stream);
}
catch (Exception ex)
{
log.ErrorException($"Unable to load projection stream. ProjectionId:{projectionId} ProjectionContractId:{projectionName} ProjectionName:{projectionType.Name}", ex);
return(ProjectionStream.Empty());
}
}
private async Task <ProjectionStream> LoadProjectionStreamAsync(Type projectionType, IBlobId projectionId)
{
string projectionName = projectionType.GetContractId();
ReadResult <ProjectionVersions> result = await GetProjectionVersionsAsync(projectionName).ConfigureAwait(false);
if (result.IsSuccess)
{
ProjectionVersion liveVersion = result.Data.GetLive();
if (liveVersion is null)
{
log.Warn(() => $"Unable to find projection `live` version. {Environment.NewLine}AvailableVersions:{Environment.NewLine}{result.Data.ToString()}");
return(ProjectionStream.Empty());
}
ISnapshot snapshot = projectionType.IsSnapshotable()
? await snapshotStore.LoadAsync(projectionName, projectionId, liveVersion).ConfigureAwait(false)
: new NoSnapshot(projectionId, projectionName);
return(await LoadProjectionStreamAsync(liveVersion, projectionId, snapshot));
}
return(ProjectionStream.Empty());
}
