SSIS Conditional split triggering wrong script component PostExecute method
I have a SSIS package that is being developed in Visual Studio 2022 targeting SQL Server 2019 and I have a weird problem.
I have a data flow that refreshes a bearer token meaning it retrieves the token from the database, check the expiry and if it is expired, it refreshes it and if not, it reuses the token from the database. It then stores that token in a package scoped variable to use later in other data flows.
To update the token or reuse the token, I use two different script components that is routed through a conditional split with the following expressions:
- Output: "Token Expired", Expression:
HasExpired == TRUE - Output: "Token NOT Expired", Expression:
HasExpired == FALSE
The problem I am having is: My token is not expired but for some reason the void PostExecute()in the script component that is responsible for renewing expired tokens is being triggered. I did plenty of tests and it seems it works sometimes when I restart VS but it starts doing that again after few runs.
An idea what may be causing this?
I tried setting break points in the script components but the incorrect method still kept triggering. I also tried enabling data viewer and the data viewer shows the correct data but the wrong PostExecute() still triggers.
Answers
It sounds like you're encountering an unexpected behavior in your SSIS package where the PostExecute() method in the script component responsible for renewing expired tokens is being triggered even when the token is not expired. This behavior seems intermittent, as it sometimes works after restarting Visual Studio but then reverts to the incorrect behavior after a few runs.
Here are a few suggestions to troubleshoot and resolve this issue:
-
Review Script Component Code: Double-check the logic in the script component's
PostExecute()method that determines whether the token needs to be renewed. Ensure that the conditions accurately reflect the token's expiry status and that there are no logical errors causing the method to be triggered incorrectly. -
Inspect Data Flow: Use data viewers or logging within your SSIS package to inspect the data flowing through the data flow pipeline. Verify that the token expiry status is correctly determined and propagated through the conditional split. Ensure that the correct output paths are being taken based on the expiry status.
-
Check Variable Scoping: Verify the scoping of the package-level variable used to store the token. Ensure that it is correctly scoped at the package level and not inadvertently being reset or modified elsewhere in the package.
-
Debugging: Continue using breakpoints and debugging techniques to step through the execution of your SSIS package. Pay close attention to the flow of control and the values of variables at each step to identify any discrepancies or unexpected behavior.
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Environment and Configuration: Consider any environmental factors or configurations that may be influencing the behavior of your SSIS package. This could include factors such as database connectivity, server configurations, or external dependencies.
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Version Control: If you're working in a team environment or using version control, ensure that there are no conflicting changes or differences between versions of the SSIS package that could be causing the issue.
-
Update Visual Studio and SSDT: Ensure that you're using the latest version of Visual Studio and SQL Server Data Tools (SSDT). Sometimes, issues like this can be resolved by updating to the latest software versions, as they may include bug fixes and improvements.
By carefully reviewing your script component logic, inspecting data flow, checking variable scoping, debugging, considering environmental factors, and ensuring software updates are applied, you should be able to identify and resolve the issue with the incorrect triggering of the PostExecute() method in your SSIS package.
