public CloudTable GetTable(string suffix)
{
var table = LegacyTableReader.TryGetLegacy(_tableClient, suffix);
if (table != null)
{
return(table);
}
var tableName = _tableNamePrefix + suffix;
table = _tableClient.GetTableReference(tableName);
return(table);
}
public async Task <Segment <IFunctionDefinition> > GetFunctionDefinitionsAsync(string continuationToken)
{
var instanceTable = _tableLookup.GetTableForDateTime(TimeBucket.CommonEpoch);
var results = await GetFunctionDefinitionsHelperAsync(instanceTable);
var legacyTable = LegacyTableReader.GetLegacyTable(_tableLookup);
if (legacyTable != null)
{
var olderResults = await GetFunctionDefinitionsHelperAsync(legacyTable);
results = LegacyTableReader.Merge(results, olderResults);
}
var segment = new Segment <IFunctionDefinition>(results);
return(segment);
}
// List all tables that we may have handed out.
public async Task <CloudTable[]> ListTablesAsync()
{
List <CloudTable> list = new List <CloudTable>();
TableContinuationToken continuationToken = null;
do
{
var segment = await _tableClient.ListTablesSegmentedAsync(_tableNamePrefix, continuationToken, CancellationToken.None);
list.AddRange(segment.Results);
continuationToken = segment.ContinuationToken;
}while (continuationToken != null);
var legacyTable = LegacyTableReader.GetLegacyTable(_tableClient);
if (legacyTable != null)
{
list.Add(legacyTable);
}
return(list.ToArray());
}
// The 'epoch' is a mapping from DateTime onto integers that preserves ordering.
// For example, if we have a table query between Start and End datetimes, we need to determine
// the subset of tables that can possible hold that date range.
// Use integers instead of datetime because:
// - It provides a sortable view of the date ranges.
// - integers are valid Azure Table characters, so they can easily be a table suffix.
public static long GetEpochNumberFromTable(CloudTable table)
{
long epoch;
epoch = LegacyTableReader.GetEpochFromTable(table);
if (epoch > 0)
{
return(epoch);
}
string tableName = table.Name;
if (tableName.Length < 5)
{
return(-1);
}
string suffix = tableName.Substring(tableName.Length - 6, 6);
if (long.TryParse(suffix, out epoch))
{
return(epoch);
}
return(-1);
}