Adds the end-to-end layer the unit suites structurally cannot reach: a real
in-process ASP.NET Core host serving SecretsHubService through
AddZbSecretsGrpcHub/MapZbSecretsHub, a follower built by the shipped
AddZbSecretsGrpcHubClient, a real gRPC call between them, and real SQLite
stores on both sides. The class of defect this catches is pieces that are each
individually correct and are never connected to one another — for instance the
interceptor's warn-once, which only holds if the container really hands gRPC
the singleton it registered.
Covered: byte-identical convergence over the wire (every ciphertext/nonce/tag/
wrapped-DEK byte, kek_id, revision, both timestamps INCLUDING their offsets,
across a tombstone, a nulls-everywhere row and an empty-string-description row);
delete propagation; a hub unreachable at follower boot leaving the last-known-
good store intact and converging once it answers; the auth negatives fail-closed
across the wire with one uniform denial detail; the per-request name cap as
ResourceExhausted; and an RpcException from the call invoker escaping the hub
client unchanged, so a transport fault stays distinguishable from a parse fault.
The credential-hygiene assertions are made against logs captured at Trace on
BOTH hosts, so "no token material ever reaches a sink" is asserted at the most
verbose setting a deployment could switch on.
SecretsHubContractPinTests reads the generated descriptor — not the .proto text
— and pins the RPC set to exactly {GetManifest, GetSecrets}, plus unary-only and
the package-qualified service name. The hub is pull-only by construction:
updates originate at central only, and the absence of a write RPC is what
enforces that, not authorization a mis-wired follower may hold more of than
intended. A third RPC silently retires the guarantee, so the failure message
says so.
Microsoft.AspNetCore.TestHost pinned at 10.0.7 — the version ZB.MOM.WW.LocalDb,
OtOpcUa and ScadaBridge already pin, matching the Microsoft.Extensions.* line.
Full suite: 436 passed / 0 failed / 15 skipped, no new warnings.
Claude-Session: https://claude.ai/code/session_014WNM4vjoVksyyBraTXSZE1
Joseph Doherty