[DPE-10735] feat(config): add peer-state config/user hash + tls unit accessors (1/6)#181
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Scaffolds the config-subsystem port into the library: a later change persists the applied config/user hashes and the last-rendered TLS flag to peer relation data so the update_config manager can detect drift without re-deriving it from live workload state. Add the plain-databag accessors now so that change only wires them up. Signed-off-by: Marcelo Henrique Neppel <marcelo.neppel@canonical.com>
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Issue
The
update_configmigration needs the config/user hash and the TLS flag to round-trip through the peer databag, as they do in both charms. This first step adds those accessors so later steps in the stack can read and persist them.Solution
Add plain-databag accessors on the peer-relation state, mirroring the existing
ip/is_connectivity_enabledpattern:PostgreSQLPeer.config_hash/user_hash(str | None) andPostgreSQLApplication.user_hash.PostgreSQLPeer.tls(bool) — getter reads"enabled", setter writes"enabled"/"".First (code-only) PR in the update_config stack. Its unit tests land with the rest in the stack's test PR (#188).
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