[20706] Make reader get_first_untaken_info() coherent with read()/take() (backport #4696) #4706
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* Refs #20706: Add regression BB test Signed-off-by: Mario Dominguez <[email protected]> * Refs #20706: Fix Signed-off-by: Mario Dominguez <[email protected]> * Refs #20706: Apply review suggestions Signed-off-by: Mario Dominguez <[email protected]> --------- Signed-off-by: Mario Dominguez <[email protected]> (cherry picked from commit 5fbd88e)
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Github CI issues unrelated to the PR |
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@richiprosima please test this |
JesusPoderoso
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Description
This PR corrects the behavior of
get_first_untaken_info()so that it retrieves the first valid cache change (checking whether the change is in the future or not), instead of just returning the first one in the instance (sorted by sourcetimestamp).In the scenario of having multiple reliable writers and one reader with history size > 1 in the same topic, it can happen that
get_first_untaken_info()returnsOK(as it is not currently checking whether the change is in the future) buttake()returnsNO_DATAbecause the change is in the future.In addition, a brief doxygen documentation is added to be aware that the method is meant to be followed by a
read()ortake()since it does not modify the status condition of the entity.@Mergifyio backport 2.13.x 2.10.x 2.6.x
Fixes ros2/rmw_fastrtps#749
Contributor Checklist
Commit messages follow the project guidelines.
The code follows the style guidelines of this project.
Tests that thoroughly check the new feature have been added/Regression tests checking the bug and its fix have been added; the added tests pass locally
Any new/modified methods have been properly documented using Doxygen.
Any new configuration API has an equivalent XML API (with the corresponding XSD extension)
Changes are ABI compatible.
Changes are API compatible.
N/A New feature has been added to the
versions.mdfile (if applicable).N/A New feature has been documented/Current behavior is correctly described in the documentation.
Applicable backports have been included in the description.
Reviewer Checklist
This is an automatic backport of pull request #4696 done by [Mergify](https://mergify.com).