Joseph Doherty
0ffd4bdbea
Comment/XML-doc changes only, no code logic: - strip project-tracking references (WP*, P*-*, row-NN, #NN, Task N) from comments, keeping the explanatory rationale - add missing summaries, <param>, <returns>, <typeparam> and <inheritdoc/> - replace misused <inheritdoc/> with real docs; where <inheritdoc/> was combined with useful remarks, move the rationale into // comments - drop stale replicationActor <param> on DeploymentManagerActor ctor Remaining 5 are false positives (CWE-1236 x2, failures-1, year-0001, M365). Build 0 errors / 0 warnings.
79 lines
3.2 KiB
C#
79 lines
3.2 KiB
C#
using Microsoft.Extensions.Hosting;
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using Microsoft.Extensions.Logging;
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using ZB.MOM.WW.ScadaBridge.HealthMonitoring;
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namespace ZB.MOM.WW.ScadaBridge.SiteRuntime.Streaming;
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/// <summary>
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/// Site-side
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/// hosted service that periodically reads <see cref="SiteStreamManager.AlarmPublishDroppedCount"/>
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/// and pushes it into <see cref="ISiteHealthCollector.SetSiteStreamAlarmDropCount"/> so
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/// the next <see cref="ISiteHealthCollector.CollectReport"/> carries a fresh snapshot on
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/// the site health report. Mirrors <c>ScriptSchedulerStatsReporter</c>: immediate first
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/// probe, fixed cadence, exceptions logged and swallowed so the loop survives every probe
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/// failure.
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/// </summary>
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public sealed class SiteStreamAlarmDropReporter : BackgroundService
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{
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/// <summary>Default poll cadence (10 s) — coarse enough to amortise across health reports.</summary>
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internal static readonly TimeSpan DefaultPollInterval = TimeSpan.FromSeconds(10);
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private readonly ISiteHealthCollector _collector;
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private readonly SiteStreamManager _streamManager;
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private readonly ILogger<SiteStreamAlarmDropReporter> _logger;
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private readonly TimeSpan _pollInterval;
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/// <summary>Initializes a new instance of <see cref="SiteStreamAlarmDropReporter"/>.</summary>
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/// <param name="collector">The site health collector that receives the drop count.</param>
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/// <param name="streamManager">The site stream manager whose alarm-queue drop count is sampled.</param>
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/// <param name="logger">Logger instance.</param>
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/// <param name="pollInterval">Poll interval override; defaults to <see cref="DefaultPollInterval"/> (10 s).</param>
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public SiteStreamAlarmDropReporter(
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ISiteHealthCollector collector,
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SiteStreamManager streamManager,
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ILogger<SiteStreamAlarmDropReporter> logger,
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TimeSpan? pollInterval = null)
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{
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_collector = collector ?? throw new ArgumentNullException(nameof(collector));
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_streamManager = streamManager ?? throw new ArgumentNullException(nameof(streamManager));
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_logger = logger ?? throw new ArgumentNullException(nameof(logger));
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_pollInterval = pollInterval ?? DefaultPollInterval;
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}
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/// <inheritdoc />
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protected override async Task ExecuteAsync(CancellationToken stoppingToken)
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{
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// Immediate first probe so the first health report after start carries a
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// real snapshot instead of a zero.
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Probe();
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while (!stoppingToken.IsCancellationRequested)
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{
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try
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{
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await Task.Delay(_pollInterval, stoppingToken).ConfigureAwait(false);
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}
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catch (OperationCanceledException)
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{
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break;
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}
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Probe();
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}
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}
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private void Probe()
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{
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try
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{
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_collector.SetSiteStreamAlarmDropCount(_streamManager.AlarmPublishDroppedCount);
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}
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catch (Exception ex)
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{
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// Catch-all is deliberate: the hosted service must survive every class
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// of probe failure so the next tick gets a chance.
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_logger.LogWarning(ex, "SiteStreamAlarmDropReporter probe failed; next tick will retry.");
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}
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}
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}
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