private static async Task <TryCatch <int> > FunctionThatTriesToDoWorkButBubblesUpException2()
{
TryCatch <int> tryResult = await FunctionThatTriesToDoWorkButBubblesUpException1();
// Just try to do your work. If it fails just bubble it up.
return(tryResult.Try((result) => { return result + 2; }));
}
public async Task TestRetryExceptionBubblingUp()
{
// This test demos how exceptions will bubble up using the try pattern instead of throwing and catching.
TryCatch <int> tryMonand = await FunctionThatTriesToDoWorkButBubblesUpException2();
tryMonand
.Try((result) =>
{
Console.WriteLine($"Got a result: {result}");
})
.Catch((requestRateTooLargeException) =>
{
Console.WriteLine($"Got a 429: {requestRateTooLargeException}");
});
}
private bool TableExists(string tableName)
{
bool tableExists = false;
TryCatch.Try(
tryAction: () =>
{
DescribeTableResponse response = Client.DescribeTableAsync(tableName).Result;
tableExists = true;
},
catchAction: caughtException =>
{
tableExists = false;
},
catchableExceptions: new List <Type> {
typeof(ResourceNotFoundException)
});
return(tableExists);
}
/// <summary>
/// Gets the filters for every partition.
/// </summary>
private static TryCatch <OrderByInitInfo> TryGetOrderByPartitionKeyRangesInitializationInfo(
OrderByContinuationToken[] suppliedContinuationTokens,
List <PartitionKeyRange> partitionKeyRanges,
SortOrder[] sortOrders,
string[] orderByExpressions)
{
TryCatch <InitInfo <OrderByContinuationToken> > tryFindRangeAndContinuationTokensMonad = CosmosCrossPartitionQueryExecutionContext.TryFindTargetRangeAndExtractContinuationTokens(
partitionKeyRanges,
suppliedContinuationTokens
.Select(token => Tuple.Create(token, token.CompositeContinuationToken.Range)));
return(tryFindRangeAndContinuationTokensMonad.Try <OrderByInitInfo>((indexAndContinuationTokens) =>
{
int minIndex = indexAndContinuationTokens.TargetIndex;
IReadOnlyDictionary <string, OrderByContinuationToken> partitionKeyRangeToContinuationToken = indexAndContinuationTokens.ContinuationTokens;
FormattedFilterInfo formattedFilterInfo = CosmosOrderByItemQueryExecutionContext.GetFormattedFilters(
orderByExpressions,
suppliedContinuationTokens,
sortOrders);
RangeFilterInitializationInfo[] filters = new RangeFilterInitializationInfo[]
{
new RangeFilterInitializationInfo(
filter: formattedFilterInfo.FilterForRangesLeftOfTargetRanges,
startIndex: 0,
endIndex: minIndex - 1),
new RangeFilterInitializationInfo(
filter: formattedFilterInfo.FiltersForTargetRange,
startIndex: minIndex,
endIndex: minIndex),
new RangeFilterInitializationInfo(
filter: formattedFilterInfo.FilterForRangesRightOfTargetRanges,
startIndex: minIndex + 1,
endIndex: partitionKeyRanges.Count - 1),
};
return new OrderByInitInfo(
filters,
partitionKeyRangeToContinuationToken);
}));
}
