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[Cosmos DB] Handle cases where desired worker count exceeds int.MaxInt #873

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merged 7 commits into from
Oct 31, 2023
Merged

[Cosmos DB] Handle cases where desired worker count exceeds int.MaxInt #873

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dbf4a74
init servicefactory
Aug 9, 2023
72a6c81
revert to use versionsuffix again
Aug 9, 2023
4c33999
add ws
Aug 9, 2023
c890cc9
remove ws
Aug 9, 2023
52d7d6d
add unit tests and catch overflow exception
Oct 24, 2023
da72aff
Merge branch 'dev' into user/vchiang/fixoverflow
Oct 24, 2023
31d85a0
add chcked block
Oct 25, 2023
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14 changes: 13 additions & 1 deletion src/WebJobs.Extensions.CosmosDB/Trigger/CosmosDBTargetScaler.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -57,7 +57,19 @@ internal TargetScalerResult GetScaleResultInternal(TargetScalerContext context,
concurrency = DefaultMaxItemsPerInvocation;
}

int targetWorkerCount = (int)Math.Ceiling(remainingWork / (decimal)concurrency);
int targetWorkerCount;

try
{
checked
{
targetWorkerCount = (int)Math.Ceiling(remainingWork / (decimal)concurrency);
}
}
catch (OverflowException)
{
targetWorkerCount = int.MaxValue;
}

string targetScaleMessage = $"Target worker count for function '{_functionId}' is '{targetWorkerCount}' (MonitoredContainerId='{_monitoredContainer.Id}', MonitoredContainerDatabaseId='{_monitoredContainer.Database.Id}', RemainingWork ='{remainingWork}', Concurrency='{concurrency}').";

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3 changes: 3 additions & 0 deletions test/WebJobs.Extensions.CosmosDB.Tests/Trigger/CosmosDBTargetScalerTests.cs
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Expand Up @@ -71,6 +71,9 @@ public CosmosDBTargetScalerTests()
[InlineData(null, 0, 3, 0)]
[InlineData(50, 200, 0, 4)]
[InlineData(-50, 200, 0, 2)]
[InlineData(1, 2147483650, 1, 1)]
[InlineData(1, 2147483650, 2147483647, 2147483647)]
[InlineData(2, 2147483650, 1073741825, 1073741825)]
public void GetScaleResultInternal(int? concurrency, long remainingWork, int partitionCount, int expectedTargetWorkerCount)
{
TargetScalerContext targetScalerContext = new TargetScalerContext
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