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mbproxy: replace status page with a live SignalR web dashboard

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The single auto-refreshing zero-JS status page gave operators a 25-column
wall and no way to drill into one connection. This adds a Bootstrap fleet
dashboard (filterable/sortable KPI table) and a per-PLC detail page with a
real-time debug view of raw PLC-side BCD vs. decoded client-side values,
streamed live over a SignalR feed. The debug view is fed by an on-demand
per-tag value capture, armed only while a detail page is open. All assets
(Bootstrap, SignalR client, fonts) are embedded so the UI works unchanged
on firewalled networks; GET /status.json is untouched for scrapers.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-05-15 10:40:21 -04:00
parent b330faff03
commit e719dd51c1
49 changed files with 3539 additions and 424 deletions
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mbproxy/tests/Mbproxy.Tests/Admin/StatusSnapshotBuilderTests.cs
+43 -1
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@@ -218,18 +218,60 @@ public sealed class StatusSnapshotBuilderTests
result.Service.ConfigReloadCount.ShouldBe(1);
}
// ── 7. BuildDebug: unknown PLC → empty, disarmed snapshot ────────────────
[Fact]
public async Task BuildDebug_UnknownPlc_ReturnsEmptyDisarmedSnapshot()
{
var (host, builder) = await BuildAsync([]);
await using var _ = new AsyncHostDispose(host);
var debug = builder.BuildDebug("no-such-plc");
debug.CaptureArmed.ShouldBeFalse();
debug.Tags.ShouldBeEmpty();
}
// ── 8. BuildDebug: configured PLC → one row per BCD tag, no traffic ──────
[Fact]
public async Task BuildDebug_ConfiguredPlc_ReturnsTagRows_DisarmedByDefault()
{
int port = PickFreePort();
var (host, builder) = await BuildAsync([("PLC-A", port)], bcd16Address: 1072);
await using var _ = new AsyncHostDispose(host);
await WaitForAsync(() => CanConnect(port), TimeSpan.FromSeconds(5), "PLC-A should bind");
var debug = builder.BuildDebug("PLC-A");
debug.CaptureArmed.ShouldBeFalse(); // no detail page open
var tag = debug.Tags.ShouldHaveSingleItem();
tag.Address.ShouldBe(1072);
tag.Width.ShouldBe(16);
tag.HasValue.ShouldBeFalse();
tag.RawHex.ShouldBe("—");
}
// ── Helpers ───────────────────────────────────────────────────────────────
private static async Task<(IHost host, StatusSnapshotBuilder builder)> BuildAsync(
(string name, int port)[] plcs,
int startupWaitMs = 200,
int backendPort = 502)
int backendPort = 502,
int? bcd16Address = null)
{
var config = new Dictionary<string, string?>
{
["Mbproxy:AdminPort"] = "0", // disable admin for unit tests
};
if (bcd16Address is { } addr)
{
config["Mbproxy:BcdTags:Global:0:Address"] = addr.ToString();
config["Mbproxy:BcdTags:Global:0:Width"] = "16";
}
for (int i = 0; i < plcs.Length; i++)
{
config[$"Mbproxy:Plcs:{i}:Name"] = plcs[i].name;