private IConcurrentDocument<DashboardVersion> StartDeletingOldData(IConcurrentMetadataTextStore store, IConcurrentDocument<DashboardVersion> version)
{
// Set status to deletion status (using etag)
_dashboardVersionManager.StartDeletingOldData(version.ETag);
// Refresh version
version = _dashboardVersionManager.Read();
while (version.Document.UpgradeState == DashboardUpgradeState.DeletingOldData)
{
var items = store.List(null);
// Refresh version
version = _dashboardVersionManager.Read();
// Return once everything's deleted
if (items.Count() == 0 || version.Document.UpgradeState != DashboardUpgradeState.DeletingOldData)
{
return version;
}
// Delete blobs
foreach (var blob in items)
{
DeleteIfLatest(store, blob);
}
}
return version;
}
public void LogFunctionStarted(FunctionInstanceSnapshot snapshot)
{
// Which operation to run depends on whether or not the entity currently exists in the "queued" status.
IConcurrentDocument <FunctionInstanceSnapshot> existingSnapshot = _store.Read(GetId(snapshot));
bool previouslyQueued;
// If the existing entity doesn't contain a StartTime, it must be in the "queued" status.
if (existingSnapshot != null && existingSnapshot.Document != null && !existingSnapshot.Document.StartTime.HasValue)
{
previouslyQueued = true;
}
else
{
previouslyQueued = false;
}
if (!previouslyQueued)
{
LogFunctionStartedWhenNotPreviouslyQueued(snapshot);
}
else
{
LogFunctionStartedWhenPreviouslyQueued(snapshot, existingSnapshot.ETag);
}
}
public FunctionStatistics Lookup(string functionId)
{
IConcurrentDocument <FunctionStatistics> result = _store.Read(functionId);
if (result == null)
{
return(null);
}
return(result.Document);
}
private IConcurrentDocument <DashboardVersion> StartRestoringArchive(IConcurrentDocument <DashboardVersion> version)
{
const int IndexerPollIntervalMilliseconds = 5000;
_dashboardVersionManager.StartRestoringArchive(version.ETag);
PersistentQueueMessage message = _upgradeQueueReader.Dequeue();
int count = 0;
do
{
while (message != null)
{
version = _dashboardVersionManager.Read();
if (version.Document.UpgradeState != DashboardUpgradeState.RestoringArchive)
{
_upgradeQueueReader.TryMakeItemVisible(message);
return(version);
}
// Delete auto-"archives" from host-archive back to host-output.
_upgradeQueueReader.Delete(message);
message = _upgradeQueueReader.Dequeue();
}
version = _dashboardVersionManager.Read();
if (version.Document.UpgradeState != DashboardUpgradeState.RestoringArchive)
{
return(version);
}
// Get items left
// while limiting pagination to first page since we're only interested in
// knowing if we're out of items.
count = _upgradeQueueReader.Count(1);
if (count > 0)
{
// wait for a while before resuming
Thread.Sleep(IndexerPollIntervalMilliseconds);
}
}while (count > 0);
return(version);
}
private bool TryUpdateEntity(string functionId, Action <FunctionStatistics> modifier)
{
IConcurrentDocument <FunctionStatistics> result = _store.Read(functionId);
if (result == null || result.Document == null)
{
FunctionStatistics statistics = new FunctionStatistics();
modifier.Invoke(statistics);
return(_store.TryCreate(functionId, statistics));
}
else
{
FunctionStatistics statistics = result.Document;
modifier.Invoke(statistics);
return(_store.TryUpdate(functionId, result.ETag, statistics));
}
}
private IConcurrentDocument <DashboardVersion> StartDeletingOldData(IConcurrentMetadataTextStore store, IConcurrentDocument <DashboardVersion> version)
{
// Set status to deletion status (using etag)
_dashboardVersionManager.StartDeletingOldData(version.ETag);
// Refresh version
version = _dashboardVersionManager.Read();
while (version.Document.UpgradeState == DashboardUpgradeState.DeletingOldData)
{
var items = store.List(null);
// Refresh version
version = _dashboardVersionManager.Read();
// Return once everything's deleted
if (items.Count() == 0 || version.Document.UpgradeState != DashboardUpgradeState.DeletingOldData)
{
return(version);
}
// Delete blobs
foreach (var blob in items)
{
DeleteIfLatest(store, blob);
}
}
return(version);
}
private void FinishUpdate(IConcurrentDocument <DashboardVersion> version)
{
_dashboardVersionManager.FinishUpgrade(version.ETag);
}
private void FinishUpdate(IConcurrentDocument<DashboardVersion> version)
{
_dashboardVersionManager.FinishUpgrade(version.ETag);
}
private IConcurrentDocument<DashboardVersion> StartRestoringArchive(IConcurrentDocument<DashboardVersion> version)
{
const int IndexerPollIntervalMilliseconds = 5000;
_dashboardVersionManager.StartRestoringArchive(version.ETag);
PersistentQueueMessage message = _upgradeQueueReader.Dequeue();
int count = 0;
do
{
while (message != null)
{
version = _dashboardVersionManager.Read();
if (version.Document.UpgradeState != DashboardUpgradeState.RestoringArchive)
{
_upgradeQueueReader.TryMakeItemVisible(message);
return version;
}
// Delete auto-"archives" from host-archive back to host-output.
_upgradeQueueReader.Delete(message);
message = _upgradeQueueReader.Dequeue();
}
version = _dashboardVersionManager.Read();
if (version.Document.UpgradeState != DashboardUpgradeState.RestoringArchive)
{
return version;
}
// Get items left
// while limiting pagination to first page since we're only interested in
// knowing if we're out of items.
count = _upgradeQueueReader.Count(1);
if (count > 0)
{
// wait for a while before resuming
Thread.Sleep(IndexerPollIntervalMilliseconds);
}
}
while (count > 0);
return version;
}
