123 lines
4.1 KiB
C#
123 lines
4.1 KiB
C#
/*
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* dbMango
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*
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* Copyright 2025 Deutsche Bank AG
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System.Reflection;
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using log4net;
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namespace Rms.Risk.Mango.Pivot.UI.Services;
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/// <summary>
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/// Execute action only after a delay. Any subsequent calls will cancel the previous action and restart the timer.
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/// </summary>
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public class DelayedExecution
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{
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private static readonly ILog _log = LogManager.GetLogger(MethodBase.GetCurrentMethod()!.DeclaringType!);
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// ReSharper disable once FieldCanBeMadeReadOnly.Global
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// ReSharper disable once ConvertToConstant.Global
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// ReSharper disable once MemberCanBePrivate.Global
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public static int DefaultDelayMSec = 3000;
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private readonly TimeSpan _delay;
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private readonly Lock _syncObject = new();
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private CancellationTokenSource? _tokenSource;
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/// <summary>
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/// Constructor
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/// </summary>
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/// <param name="delay"></param>
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public DelayedExecution( TimeSpan delay = default)
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{
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if ( delay == TimeSpan.Zero )
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delay = TimeSpan.FromMilliseconds( DefaultDelayMSec );
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_delay = delay;
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}
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/// <summary>
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/// Execute action only after a delay. Any subsequent calls will cancel the previous action and restart the timer.
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/// </summary>
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public void Run( Action<CancellationToken> action, string description, CancellationToken token = default )
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{
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lock ( _syncObject )
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{
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if ( _tokenSource != null )
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{
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_tokenSource.Cancel();
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_tokenSource = null;
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}
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_tokenSource = CancellationTokenSource.CreateLinkedTokenSource(token);
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var newToken = _tokenSource.Token;
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Task.Run( async () =>
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{
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try
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{
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await Task.Delay( _delay, newToken );
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if ( newToken.IsCancellationRequested )
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return;
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action(newToken);
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}
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catch (TaskCanceledException)
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{
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// ignore
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}
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catch (Exception ex)
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{
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_log.Error($"Delayed execution Task=\"{description}\" failed with: {ex.Message}", ex);
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}
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}, newToken );
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}
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}
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/// <summary>
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/// Execute action only after a delay. Any subsequent calls will cancel the previous action and restart the timer.
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/// </summary>
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public void Run( Func<CancellationToken, Task> action, string description, CancellationToken token = default )
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{
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lock ( _syncObject )
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{
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if ( _tokenSource != null )
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{
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_tokenSource.Cancel();
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_tokenSource = null;
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}
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_tokenSource = CancellationTokenSource.CreateLinkedTokenSource(token);
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var newToken = _tokenSource.Token;
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Task.Run( async () =>
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{
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try
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{
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await Task.Delay(_delay, newToken);
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if (newToken.IsCancellationRequested)
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return;
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await action(newToken);
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}
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catch (TaskCanceledException)
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{
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// ignore
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}
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catch (Exception ex)
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{
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_log.Error($"Delayed execution Task=\"{description}\" failed with: {ex.Message}", ex);
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}
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}, newToken );
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}
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}
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} |