internal static TableQuery <RecentPerFuncEntity> GetRecentFunctionsQuery(
RecentFunctionQuery queryParams
)
{
var functionId = queryParams.FunctionId;
var start = queryParams.Start;
var end = queryParams.End;
string rowKeyStart = RowKeyTimeStampDescendingPrefix(functionId, end);
// add a tick to create a greater row key so that we lexically compare
var start2 = (start == DateTime.MinValue) ? start : start.AddTicks(-1);
string rowKeyEnd = RowKeyTimeStampDescendingPrefix(functionId, start2);
string partKey = PartitionKeyFormat;
var rangeQuery = TableScheme.GetRowsInRange <RecentPerFuncEntity>(
partKey, rowKeyStart, rowKeyEnd);
if (queryParams.MaximumResults > 0)
{
rangeQuery = rangeQuery.Take(queryParams.MaximumResults);
}
return(rangeQuery);
}
// Could be very long
public async Task <Segment <IRecentFunctionEntry> > GetRecentFunctionInstancesAsync(
RecentFunctionQuery queryParams,
string continuationToken)
{
TableQuery <RecentPerFuncEntity> rangeQuery = RecentPerFuncEntity.GetRecentFunctionsQuery(queryParams);
var iter = await EpochTableIterator.NewAsync(_tableLookup);
var results = await iter.SafeExecuteQuerySegmentedAsync <RecentPerFuncEntity>(rangeQuery, queryParams.Start, queryParams.End);
return(results.As <IRecentFunctionEntry>());
}
// Could be very long
public async Task <Segment <IRecentFunctionEntry> > GetRecentFunctionInstancesAsync(
RecentFunctionQuery queryParams,
string continuationToken)
{
TableQuery <RecentPerFuncEntity> rangeQuery = RecentPerFuncEntity.GetRecentFunctionsQuery(queryParams);
CancellationToken cancellationToken;
TableContinuationToken realContinuationToken = Utility.DeserializeToken(continuationToken);;
var segment = await _instanceTable.ExecuteQuerySegmentedAsync <RecentPerFuncEntity>(
rangeQuery,
realContinuationToken,
cancellationToken);
return(new Segment <IRecentFunctionEntry>(segment.Results.ToArray(), Utility.SerializeToken(segment.ContinuationToken)));
}
internal static TableQuery<RecentPerFuncEntity> GetRecentFunctionsQuery(
RecentFunctionQuery queryParams
)
{
string functionName = queryParams.FunctionName;
var start = queryParams.Start;
var end = queryParams.End;
string rowKeyStart = RowKeyTimeStampDescendingPrefix(functionName, end);
// add a tick to create a greater row key so that we lexically compare
var start2 = (start == DateTime.MinValue) ? start : start.AddTicks(-1);
string rowKeyEnd = RowKeyTimeStampDescendingPrefix(functionName, start2);
string partKey = PartitionKeyFormat;
var rangeQuery = TableScheme.GetRowsInRange<RecentPerFuncEntity>(
partKey, rowKeyStart, rowKeyEnd);
rangeQuery.Take(queryParams.MaximumResults);
return rangeQuery;
}
private async Task<IResultSegment<RecentInvocationEntry>> Read3Async(
string functionId, int maximumResults, string continuationToken)
{
var queryParams = new RecentFunctionQuery
{
FunctionName = functionId,
MaximumResults = maximumResults,
Start = DateTime.MinValue,
End = DateTime.MaxValue
};
var segment = await _reader.GetRecentFunctionInstancesAsync(queryParams, continuationToken);
var results = Array.ConvertAll(segment.Results, item =>
RecentInvocationEntry.Create(RecentInvocationEntry.CreateMetadata(item.ConvertToSnapshot())));
return new ResultSegment<RecentInvocationEntry>(results, segment.ContinuationToken);
}
public Task<Segment<IRecentFunctionEntry>> GetRecentFunctionInstancesAsync(RecentFunctionQuery query, string continuationToken)
{
throw new NotImplementedException();
}
// Could be very long
public async Task<Segment<IRecentFunctionEntry>> GetRecentFunctionInstancesAsync(
RecentFunctionQuery queryParams,
string continuationToken)
{
TableQuery<RecentPerFuncEntity> rangeQuery = RecentPerFuncEntity.GetRecentFunctionsQuery(queryParams);
CancellationToken cancellationToken;
TableContinuationToken realContinuationToken = Utility.DeserializeToken(continuationToken); ;
var segment = await _instanceTable.ExecuteQuerySegmentedAsync<RecentPerFuncEntity>(
rangeQuery,
realContinuationToken,
cancellationToken);
return new Segment<IRecentFunctionEntry>(segment.Results.ToArray(), Utility.SerializeToken(segment.ContinuationToken));
}