2014-06-02 22:03:23 +02:00
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using System;
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using System.Linq;
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using System.Threading;
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using Orchard.AuditTrail.Models;
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using Orchard.ContentManagement;
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using Orchard.Environment.Extensions;
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using Orchard.Logging;
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using Orchard.Services;
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using Orchard.Settings;
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using Orchard.Tasks;
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namespace Orchard.AuditTrail.Services {
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[OrchardFeature("Orchard.AuditTrail.Trimming")]
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public class AuditTrailTrimmingBackgroundTask : Component, IBackgroundTask {
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private static readonly object _sweepLock = new object();
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private readonly ISiteService _siteService;
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private readonly IClock _clock;
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private readonly IAuditTrailManager _auditTrailManager;
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public AuditTrailTrimmingBackgroundTask(ISiteService siteService, IClock clock, IAuditTrailManager auditTrailManager) {
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_siteService = siteService;
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_clock = clock;
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_auditTrailManager = auditTrailManager;
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}
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public AuditTrailTrimmingSettingsPart Settings {
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get { return _siteService.GetSiteSettings().As<AuditTrailTrimmingSettingsPart>(); }
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}
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public void Sweep() {
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if (Monitor.TryEnter(_sweepLock)) {
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try {
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Logger.Debug("Beginning sweep.");
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// We don't need to check the audit trail for events to remove every minute. Let's stick with twice a day.
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if (!TimeToTrim())
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return;
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Logger.Debug("Starting audit trail trimming operation.");
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var deletedRecords = _auditTrailManager.Trim(TimeSpan.FromDays(Settings.Threshold));
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2014-06-17 11:35:32 -07:00
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Logger.Debug("Audit trail trimming operation completed. {0} records were deleted.", deletedRecords.Count());
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2014-06-02 22:03:23 +02:00
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Settings.LastRunUtc = _clock.UtcNow;
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}
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catch (Exception ex) {
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Logger.Error(ex, "Error during sweep.");
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}
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finally {
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Monitor.Exit(_sweepLock);
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Logger.Debug("Ending sweep.");
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}
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}
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}
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private bool TimeToTrim() {
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var lastRun = Settings.LastRunUtc ?? DateTime.MinValue;
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var now = _clock.UtcNow;
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var interval = TimeSpan.FromHours(12);
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return now - lastRun > interval;
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}
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}
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}
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