dohertj2/scadalink-design
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Apply Codex review findings across all 17 components

Browse Source 
Template Engine: add composed member addressing (path-qualified canonical names),
override granularity per entity type, semantic validation (call targets, arg types),
graph acyclicity enforcement, revision hashes for flattened configs.

Deployment Manager: add deployment ID + idempotency, per-instance operation lock
covering all mutating commands, state transition matrix, site-side apply atomicity
(all-or-nothing), artifact version compatibility policy.

Site Runtime: add script trust model (forbidden APIs, execution timeout, constrained
compilation), concurrency/serialization rules (Instance Actor serializes mutations),
site-wide stream backpressure (per-subscriber buffering, fire-and-forget publish).

Communication: add application-level correlation IDs for protocol safety beyond
Akka.NET transport guarantees.

External System Gateway: add 408/429 as transient errors, CachedCall idempotency
note, dedicated dispatcher for blocking I/O isolation.

Health Monitoring: add monotonic sequence numbers to prevent stale report overwrites.

Security: require LDAPS/StartTLS for LDAP connections.

Central UI: add failover behavior (SignalR reconnect, JWT survives, shared Data
Protection keys, load balancer readiness).

Cluster Infrastructure: add down-if-alone=on for safe singleton ownership.

Site Event Logging: clarify active-node-only logging (no replication), add 1GB
storage cap with oldest-first purge.

Host: add readiness gating (health check endpoint, no traffic until operational).

Commons: add message contract versioning policy (additive-only evolution).

Configuration Database: add optimistic concurrency on deployment status records.
This commit is contained in:
Joseph Doherty
2026-03-16 09:06:12 -04:00
parent 70e5ae33d5
commit 34694adba2
13 changed files with 152 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
Component-Host.md
View File

@@ -57,6 +57,16 @@ Before the Akka.NET actor system is created, the Host must validate all required
- Site nodes must have non-empty SQLite path values.
- At least two seed nodes must be configured.
### REQ-HOST-4a: Readiness Gating
On central nodes, the ASP.NET Core web endpoints (Central UI, Inbound API) must **not accept traffic** until the node is fully operational:
- Akka.NET cluster membership is established.
- Database connectivity (MS SQL) is verified.
- Required cluster singletons are running (if applicable).
A standard ASP.NET Core health check endpoint (`/health/ready`) reports readiness status. The load balancer uses this endpoint to determine when to route traffic to the node. During startup or failover, the node returns `503 Service Unavailable` until ready.
### REQ-HOST-5: Windows Service Hosting
The Host must support running as a Windows Service via `UseWindowsService()`. When launched outside of a Windows Service context (e.g., during development), it must run as a standard console application. No code changes or conditional compilation are required to switch between the two modes.