Joseph Doherty
db7833609d
- Search: the oninput setter scanned the whole Galaxy synchronously per keystroke. It now debounces 150ms, runs on the thread pool with cancellation (newer keystroke supersedes), and reads a shared singleton DashboardBrowseSearchIndex of pre-lowercased references keyed on the Galaxy cache Sequence. - Disposal: DisposeAsync awaited both loops unbounded and the loops caught only OCE. Loops now handle faults per iteration (poll faults surface in _readError, deploy-notifier faults in a retrying warning), mutate the tree on the dispatcher, drain concurrently with a 5s bound, and the CTSs are disposed in finally. - Circuits: DisconnectedCircuitRetentionPeriod is 30s (was the 3 min default) and a scoped DashboardCircuitConnectionTracker (CircuitHandler) lets the 2s ReadBulk poll skip ticks while the browser is disconnected. - Reads pass a per-page viewer id to the live-data per-viewer share.
43 lines
1.6 KiB
C#
43 lines
1.6 KiB
C#
using Microsoft.AspNetCore.Components.Server.Circuits;
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namespace ZB.MOM.WW.MxGateway.Server.Dashboard;
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/// <summary>
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/// Per-circuit view of whether the browser is still attached. Registered scoped, so a
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/// page injecting it sees its own circuit, and also registered as that circuit's
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/// <see cref="CircuitHandler"/> so Blazor drives it.
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/// </summary>
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/// <remarks>
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/// A closed or backgrounded browser tab leaves its circuit alive, disconnected, for
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/// <see cref="DashboardServiceCollectionExtensions.DisconnectedCircuitRetention"/>
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/// before Blazor disposes it, and every timer on the page keeps running in that
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/// window. The Browse page's two-second <c>ReadBulk</c> poll is the costly one — it
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/// drives the shared dashboard worker — so it skips its tick while
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/// <see cref="IsConnected"/> is false and resumes on reconnect.
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/// </remarks>
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public sealed class DashboardCircuitConnectionTracker : CircuitHandler
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{
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private volatile bool _connected = true;
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/// <summary>
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/// Gets a value indicating whether the circuit's browser connection is up. True
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/// until Blazor reports the connection down, and also outside a circuit (prerender),
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/// where no handler callbacks ever arrive.
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/// </summary>
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public bool IsConnected => _connected;
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/// <inheritdoc />
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public override Task OnConnectionUpAsync(Circuit circuit, CancellationToken cancellationToken)
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{
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_connected = true;
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return Task.CompletedTask;
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}
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/// <inheritdoc />
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public override Task OnConnectionDownAsync(Circuit circuit, CancellationToken cancellationToken)
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{
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_connected = false;
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return Task.CompletedTask;
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}
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}
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