private async Task <IResultSegment <FunctionIndexEntry> > Read1Async(string hostName)
{
var snapshots = await GetSnapshotsAsync(hostName);
var results = Array.ConvertAll(snapshots, x =>
FunctionIndexEntry.Create(
FunctionIndexEntry.CreateOtherMetadata(x), x.HostVersion));
return(new ResultSegment <FunctionIndexEntry>(results, null));
}
public IResultSegment <FunctionIndexEntry> Read(int maximumResults, string continuationToken)
{
BlobContinuationToken blobContinuationToken = BlobContinuationTokenSerializer.Deserialize(continuationToken);
BlobResultSegment blobSegment;
try
{
blobSegment = _functionsContainer.ListBlobsSegmented(
prefix: _functionsPrefix,
useFlatBlobListing: true,
blobListingDetails: BlobListingDetails.Metadata,
maxResults: maximumResults,
currentToken: blobContinuationToken,
options: null,
operationContext: null);
}
catch (StorageException exception)
{
if (exception.IsNotFound())
{
return(null);
}
else
{
throw;
}
}
if (blobSegment == null)
{
return(null);
}
List <FunctionIndexEntry> results = new List <FunctionIndexEntry>();
// Cast from IListBlobItem to ICloudBlob is safe due to useFlatBlobListing: true above.
foreach (ICloudBlob blob in blobSegment.Results)
{
IDictionary <string, string> metadata = blob.Metadata;
DateTimeOffset version = _versionMapper.GetVersion(metadata);
FunctionIndexEntry result = FunctionIndexEntry.Create(metadata, version);
results.Add(result);
}
string nextContinuationToken = BlobContinuationTokenSerializer.Serialize(blobSegment.ContinuationToken);
return(new ResultSegment <FunctionIndexEntry>(results, nextContinuationToken));
}
private IDictionary <string, string> CreateOtherMetadata(FunctionSnapshot snapshot)
{
return(FunctionIndexEntry.CreateOtherMetadata(snapshot));
}
private bool? HostHasHeartbeat(FunctionIndexEntry function)
{
if (!function.HeartbeatExpirationInSeconds.HasValue)
{
return null;
}
return HostHasHeartbeat(function.HeartbeatSharedContainerName, function.HeartbeatSharedDirectoryName,
function.HeartbeatExpirationInSeconds.Value);
}