setting: prevent use of SystemOnly settings from tenant code #74253
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ajwerner
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Jan 10, 2022
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Reviewed 9 of 9 files at r1, 21 of 21 files at r2, all commit messages.
Reviewable status:complete! 1 of 0 LGTMs obtained (waiting on @dt)
The internal setting code passes around slot indexes as bare integers, and there are confusingly two variants: one is 1-indexed, another is 0-indexed. This change makes all slot indexes 0-indexed and adds a `slotIdx` type. Note: the 1-indexed choice was perhaps useful at the time to help find code paths where the slot index is not initialized, but now the slot index is set along with other mandatory fields by `init()`. Release note: None
This change implements the `system-only` semantics in the RFC (cockroachdb#73349). All SystemOnly setting values are now invisible from tenant code. If tenant code attempts to get or set a SystemOnly setting by handle, it results in panics in test builds; in non-test builds, these settings always report the default value. Release note (sql change): System-only cluster settings are no longer visible for non-system tenants.
RaduBerinde
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setting: clean up slot indexes
The internal setting code passes around slot indexes as bare integers,
and there are confusingly two variants: one is 1-indexed, another is
0-indexed.
This change makes all slot indexes 0-indexed and adds a
slotIdxtype.
Note: the 1-indexed choice was perhaps useful at the time to help find
code paths where the slot index is not initialized, but now the slot
index is set along with other mandatory fields by
init().Release note: None
setting: prevent use of SystemOnly settings from tenant code
This change implements the
system-onlysemantics in the RFC(#73349).
All SystemOnly setting values are now invisible from tenant code. If
tenant code attempts to get or set a SystemOnly setting by handle, it
results in panics in test builds; in non-test builds, these settings
always report the default value.
Release note (sql change): System-only cluster settings are no longer
visible for non-system tenants.