Add a new "revokedCertificates" table to the database schema. This table
is similar to the existing "certificateStatus" table in many ways, but
the idea is that it will only have rows added to it when certificates
are revoked, not when they're issued. Thus, it will grow many orders of
magnitude slower than the certificateStatus table does. Eventually, it
will replace that table entirely.
The one column that revokedCertificates adds is the new "ShardIdx"
column, which is the CRL shard in which the revoked certificate will
appear. This way we can assign certificates to CRL shards at the time
they are revoked, and guarantee that they will never move to a different
shard even if we change the number of shards we produce. This will
eventually allow us to put CRL URLs directly into our certificates,
replacing OCSP URLs.
Add new logic to the SA's RevokeCertificate and UpdateRevokedCertificate
methods to handle this new table. If these methods receive a request
which specifies a CRL shard (our CRL shards are 1-indexed, so shard 0
does not exist), then they will ensure that the new revocation status is
written into both the certificateStatus and revokedCertificates tables.
This logic will not function until the RA is updated to take advantage
of it, so it is not a risk for it to appear in Boulder before the new
table has been created.
Also add new logic to the SA's GetRevokedCertificates method. Similar to
the above, this reads from the new table if the ShardIdx field is
supplied in the request message. This code will not operate until the
crl-updater is updated to include this field. We will not perform this
update for a minimum of 100 days after this code is deployed, to ensure
that all unexpired revoked certificates are present in the
revokedCertificates table.
Part of https://github.com/letsencrypt/boulder/issues/7094
bab048d221