This adds a new SQL function injection_points_set_local() that can be
used to force injection points to be run only in the process where they
are attached. This is handy for SQL tests to:
- Detach automatically injection points when the process exits.
- Allow tests with injection points to run concurrently with other test
suites, so as such modules do not have to be marked with
NO_INSTALLCHECK.
Currently, the only condition that can be registered is for a PID.
This could be extended to more kinds later, if required, like database
names/OIDs, roles, or more concepts I did not consider.
Using a single function for SQL scripts is an idea from Heikki
Linnakangas.
Reviewed-by: Andrey Borodin
Discussion: https://postgr.es/m/ZfP7IDs9TvrKe49x@paquier.xyz
This provides basic coverage for injection points within a single
process, while providing some callbacks that can be used for other
tests. There are plans to extend this module later with more
advanced capabilities for tests.
Author: Michael Paquier, with comment fixes from Ashutosh Bapat.
Reviewed-by: Ashutosh Bapat, Nathan Bossart, Álvaro Herrera, Dilip
Kumar, Amul Sul, Nazir Bilal Yavuz
Discussion: https://postgr.es/m/ZTiV8tn_MIb_H2rE@paquier.xyz
Michael Paquier