In article <54eeb3a30905120956p79b48ea7ka564c640e57be...@mail.gmail.com>,
Tim Haloun <thal...@google.com> writes:
> I have a simple related question. I am trying to test the execution of my
> rollback custom action. I had thought that returning ERROR_INSTALL_FAILURE
> from a type 1 CA with return="Check" would do the trick. What I see though
> is that further actions are skipped, the msi returns code 1603, and the
> rollback CA is not invoked. Does the placement of the rollback action in
> the InstallExecuteSequence matter? I currently have it after the other CA
> whose failure I want to correct.
Yes, sequencing of the actions matters. It always matters. The MSI
execution model is to execute actions in the order they are sequenced.
The correct way to test rollback CAs is to put a type 19 CA in your
execute sequence, just before InstallFinalize which ends the install
transaction. Put a condition on the type 19 CA such that it only
executes when you want to test rollback, generally using a public
property so you can test this from the command-line. Then run your
install with the public property set to the right value, the type 19
action will force an error, which will undo the entire transaction and
test all rollback actions that were inside the transaction (it doesn't
make any sense to have rollback actions sequenced outside the
transaction delineated by InstallInitialize and InstallFinalize).
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