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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
55 lines
2.4 KiB
SQL
55 lines
2.4 KiB
SQL
CREATE EXTENSION injection_points;
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SELECT injection_points_attach('TestInjectionBooh', 'booh');
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SELECT injection_points_attach('TestInjectionError', 'error');
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SELECT injection_points_attach('TestInjectionLog', 'notice');
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SELECT injection_points_attach('TestInjectionLog2', 'notice');
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SELECT injection_points_run('TestInjectionBooh'); -- nothing
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SELECT injection_points_run('TestInjectionLog2'); -- notice
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SELECT injection_points_run('TestInjectionLog'); -- notice
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SELECT injection_points_run('TestInjectionError'); -- error
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-- Re-load cache and run again.
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\c
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SELECT injection_points_run('TestInjectionLog2'); -- notice
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SELECT injection_points_run('TestInjectionLog'); -- notice
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SELECT injection_points_run('TestInjectionError'); -- error
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-- Remove one entry and check the remaining entries.
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SELECT injection_points_detach('TestInjectionError'); -- ok
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SELECT injection_points_run('TestInjectionLog'); -- notice
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SELECT injection_points_run('TestInjectionError'); -- nothing
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-- More entries removed, letting TestInjectionLog2 to check the same
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-- callback used in more than one point.
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SELECT injection_points_detach('TestInjectionLog'); -- ok
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SELECT injection_points_run('TestInjectionLog'); -- nothing
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SELECT injection_points_run('TestInjectionError'); -- nothing
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SELECT injection_points_run('TestInjectionLog2'); -- notice
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SELECT injection_points_detach('TestInjectionLog'); -- fails
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SELECT injection_points_run('TestInjectionLog2'); -- notice
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SELECT injection_points_detach('TestInjectionLog2');
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-- Runtime conditions
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SELECT injection_points_attach('TestConditionError', 'error');
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-- Any follow-up injection point attached will be local to this process.
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SELECT injection_points_set_local();
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SELECT injection_points_attach('TestConditionLocal1', 'error');
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SELECT injection_points_attach('TestConditionLocal2', 'notice');
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SELECT injection_points_run('TestConditionLocal1'); -- error
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SELECT injection_points_run('TestConditionLocal2'); -- notice
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-- reload, local injection points should be gone.
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\c
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SELECT injection_points_run('TestConditionLocal1'); -- nothing
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SELECT injection_points_run('TestConditionLocal2'); -- nothing
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SELECT injection_points_run('TestConditionError'); -- error
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SELECT injection_points_detach('TestConditionError');
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-- Attaching injection points that use the same name as one defined locally
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-- previously should work.
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SELECT injection_points_attach('TestConditionLocal1', 'error');
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SELECT injection_points_detach('TestConditionLocal1');
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DROP EXTENSION injection_points;
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