724 lines
26 KiB
C#
724 lines
26 KiB
C#
/************************************************************************
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*@file FrameworkLocal\UIClient\CenterViews\DataLogs\DataHistory\DataViewModel.cs
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* @author Su Liang
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* @Date 2022-08-01
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*
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* @copyright © Sicentury Inc.
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*
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* @brief Reconstructed to optimize the performance.
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*
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* @details
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* 1. 2-STAGE PIPELINE are introduced to separate the 'querying' and 'rendering' operations.
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* 2. Querying day by day in separate thread.
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* *****************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Forms;
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using Aitex.Core.RT.Log;
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using MECF.Framework.Common.DataCenter;
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using MECF.Framework.UI.Client.CenterViews.Core;
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using MECF.Framework.UI.Client.CenterViews.Core.Charting;
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#if !EXPORT_TO_CSV
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using MECF.Framework.Common.Utilities;
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#endif
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using MECF.Framework.UI.Client.CenterViews.Operations.RealTime;
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using SciChart.Charting.Model.DataSeries;
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using SciChart.Charting.Visuals.Axes;
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using SciChart.Charting.Visuals.RenderableSeries;
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using SciChart.Core.Extensions;
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using SciChart.Core.Framework;
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using SciChart.Data.Model;
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using Sicentury.Core;
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using Sicentury.Core.EventArgs;
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using Sicentury.Core.Pipelines;
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using Sicentury.Core.Tree;
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using Cali = Caliburn.Micro;
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using DateRange = SciChart.Data.Model.DateRange;
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using MessageBox = System.Windows.MessageBox;
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using TreeNode = Sicentury.Core.Tree.TreeNode;
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namespace MECF.Framework.UI.Client.CenterViews.DataLogs.DataHistory
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{
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public class DataViewModel : BusyIndicateableUiViewModelBase
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{
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#region Variables
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/// <summary>
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/// 一次最多查询的项目数。
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/// </summary>
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private const int MAX_ITEMS_PER_QUERY = 50;
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private IRange _timeRange;
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private IRange _visibleRangeValue;
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private AutoRange _autoRange;
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private CancellationTokenSource _cancellationTokenSource;
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/// <summary>
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/// 更新报告导出信息。
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/// </summary>
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private readonly IProgress<ProgressUpdatingEventArgs> _progCsvExport;
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/// <summary>
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/// 查询进度信息更新。
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/// </summary>
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private IProgress<ProgressUpdatingEventArgs> _progQueryUpdate;
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/// <summary>
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/// 挂起或恢复Chart更新
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/// </summary>
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private readonly IProgress<bool> _progChartSuspendUpdating;
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private IUpdateSuspender _suspender;
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/// <summary>
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/// 打开错误消息对话框。
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/// </summary>
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private readonly IProgress<string> _progShowErrorMessageBox;
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#endregion
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#region Constructors
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public DataViewModel()
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{
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DisplayName = "Data History";
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SelectedData = new ChartingLineSeriesCollection(DisplayName);
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var provider = new RealtimeProvider();
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ParameterNodes = new TreeNode(DisplayName)
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{
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MaxTerminalSelectionAllowed = MAX_ITEMS_PER_QUERY
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};
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ParameterNodes.ChildNodes.AddRange( provider.GetParameters());
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VisibleRangeTime = new DateRange(DateTime.Now.AddMinutes(-60), DateTime.Now.AddMinutes(60));
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VisibleRangeValue = new DoubleRange(0, 10);
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_progQueryUpdate = new Progress<ProgressUpdatingEventArgs>(e =>
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{
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if (e.CurrentProgress == e.TotalProgress)
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{
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IsBusy = false;
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if (_cancellationTokenSource?.Token.IsCancellationRequested == false)
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{
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foreach (var renderableSeries in SelectedData)
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{
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var series = renderableSeries as SicFastLineSeries;
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var dataSeries = series?.GetDataSeries();
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try
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{
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if (series != null && dataSeries != null)
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{
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var node = series.BackendParameterNode;
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if (double.IsInfinity((double)dataSeries.YRange.Diff))
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{
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node.ClearStatistic();
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}
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else
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{
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var min = ((double)dataSeries.YMin);
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var max = ((double)dataSeries.YMax);
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var average =
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dataSeries.Metadata.Cast<ParameterNodePoint>().Average(x => x.Value);
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node.SetStatistic(min, max, average);
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}
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}
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}
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catch (Exception ex)
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{
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var err = $"It's failed to load data of {series?.DataName ?? "Unknown"}, {ex.Message}";
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LOG.Error(err, ex);
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}
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}
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}
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ChartAutoRange = AutoRange.Never;
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((DataView)View).chart.ZoomExtents();
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}
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BusyIndicatorContent = e.Message;
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});
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_progCsvExport = new Progress<ProgressUpdatingEventArgs>(e =>
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{
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BusyIndicatorContent = e.Message;
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});
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_progChartSuspendUpdating = new Progress<bool>(isSuspend =>
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{
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if (isSuspend)
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_suspender = ((DataView)View).chart.SuspendSuspendUpdates();
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else
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{
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try
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{
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if (_suspender?.IsSuspended == true)
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_suspender?.SafeDispose();
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}
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catch (Exception)
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{
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// 查询过程最后会强制恢复挂起一次，可能引发异常，忽略此异常。
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}
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}
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});
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_progShowErrorMessageBox = new Progress<string>((error =>
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{
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System.Windows.Forms.MessageBox.Show(error, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
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}));
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}
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#endregion
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#region Property
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public TreeNode ParameterNodes { get; }
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public ChartingLineSeriesCollection SelectedData { get; set; }
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public AutoRange ChartAutoRange
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{
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get => _autoRange;
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set
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{
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_autoRange = value;
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NotifyOfPropertyChange(nameof(ChartAutoRange));
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}
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}
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public IRange VisibleRangeTime
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{
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get => _timeRange;
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set
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{
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_timeRange = value;
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NotifyOfPropertyChange(nameof(VisibleRangeTime));
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}
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}
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public IRange VisibleRangeValue
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{
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get => _visibleRangeValue;
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set
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{
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_visibleRangeValue = value;
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NotifyOfPropertyChange(nameof(VisibleRangeValue));
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}
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}
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public DateTime StartDateTime
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{
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get => ((DataView)View).wfTimeFrom.Value;
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set
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{
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((DataView)View).wfTimeFrom.Value = value;
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NotifyOfPropertyChange(nameof(StartDateTime));
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}
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}
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public DateTime EndDateTime
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{
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get => ((DataView)View).wfTimeTo.Value;
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set
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{
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((DataView)View).wfTimeTo.Value = value;
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NotifyOfPropertyChange(nameof(EndDateTime));
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}
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}
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#endregion
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#region Methods
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protected override void OnViewLoaded(object view)
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{
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base.OnViewLoaded(view);
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StartDateTime = DateTime.Now.Date;
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EndDateTime = DateTime.Now.Date.AddDays(1).AddTicks(-1);
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}
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/// <summary>
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/// 查询数据。
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/// </summary>
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/// <exception cref="Exception"></exception>
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public void Query(bool isAppend = false)
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{
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if (StartDateTime > EndDateTime)
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{
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MessageBox.Show("time range invalid, start time should be early than end time.", "Error",
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MessageBoxButton.OK,
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MessageBoxImage.Error);
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return;
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}
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// 哪些模组（TreeView的顶层Nodes）有选中项。
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var selectedModules = ParameterNodes.ChildNodes.Where(x => x.HasTerminalSelected).ToList();
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if (!selectedModules.Any())
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{
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MessageBox.Show($"No item(s) are selected to query.", "Warning", MessageBoxButton.OK,
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MessageBoxImage.Warning);
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return;
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}
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VisibleRangeTime = new DateRange(StartDateTime.AddHours(-1), EndDateTime.AddHours(1));
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ChartAutoRange = AutoRange.Always;
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BusyIndicatorContent = "Preparing list ...";
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IsBusy = true;
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_cancellationTokenSource = new CancellationTokenSource();
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#region 生成曲线列表
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var selectedTerminal =
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selectedModules.SelectMany(x => x.Flatten(true).Where(p => p.IsSelected == true)).ToList();
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List<IRenderableSeries> appendedSeries = null;
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if (isAppend)
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appendedSeries = SelectedData.Append(selectedTerminal);
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else
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{
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SelectedData.ReArrange(selectedTerminal);
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appendedSeries = SelectedData.ToList();
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}
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SelectedData.ResetColors();
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#endregion
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var dataSeriesList = appendedSeries.Select(x => x.DataSeries).ToList();
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Task.Run( async() =>
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{
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// 延时启动，等待UI准备好
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await Task.Delay(500);
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var pipeline = new TwoStagePipelineBasedTaskExecutor<DataSet, object>();
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pipeline.Stage2ActionStarted += (s, e) =>
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{
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// 挂起Chart
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_progChartSuspendUpdating.Report(true);
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};
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pipeline.Stage2ActionFinished += (s, e) =>
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{
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// 挂起刷新
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_progChartSuspendUpdating.Report(false);
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};
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pipeline.Stage1Finished += (s, e) =>
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{
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// 查询完毕，Chart可能仍在渲染。
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_progQueryUpdate?.Report(new ProgressUpdatingEventArgs(50, 100, "Still rendering chart ..."));
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};
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using (pipeline)
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{
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var plTasks = pipeline.Start(null);
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try
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{
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//! 按时间分段查询，解决查询速度慢导致卡后台业务的问题。
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/*var ts = EndDateTime - StartDateTime;
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if (ts.Days <= 1)
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{
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Query(pipeline, selectedModules, dataSeriesList, StartDateTime, EndDateTime,
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_cancellationTokenSource, _progQueryUpdate);
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// 结束流水线
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pipeline.AppendFunc1(null);
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pipeline.AppendFunc2(null);
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}
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else
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{*/
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var daySlices =
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DateRangeHelper.SplitInToHours(new DateRangeHelper(StartDateTime, EndDateTime), 12);
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foreach (var range in daySlices)
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{
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Query(pipeline, selectedModules, dataSeriesList, range.Start, range.End,
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_cancellationTokenSource, _progQueryUpdate);
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if (_cancellationTokenSource.Token.IsCancellationRequested)
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break;
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await Task.Delay(1);
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}
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// 结束流水线
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pipeline.AppendFunc1(null);
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pipeline.AppendFunc2(null);
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//}
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await Task.WhenAll(plTasks.ToArray());
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}
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catch (ThreadAbortException ex)
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{
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Thread.Sleep(500);
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// 查询操作被取消。
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Debug.WriteLine(ex);
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}
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catch (AggregateException ae)
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{
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var errs = new StringBuilder();
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foreach (var ex in ae.Flatten().InnerExceptions)
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{
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LOG.Error(ex.Message, ex);
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errs.AppendLine(ex.Message);
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}
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var errMsg = $"It's failed to query data, {errs}";
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_progShowErrorMessageBox.Report(errMsg);
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LOG.Error(errMsg, ae);
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}
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catch (Exception ex)
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{
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var errMsg = $"It's failed to query data, {ex.Message}";
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_progShowErrorMessageBox.Report(errMsg);
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LOG.Error(errMsg, ex);
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}
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finally
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{
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// 等待一下UI
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Thread.Sleep(100);
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_progQueryUpdate.Report(new ProgressUpdatingEventArgs(100, 100, ""));
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// 强制恢复Chart刷新，避免异常情况导致的Chart挂起。
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_progChartSuspendUpdating.Report(false);
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}
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}
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});
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}
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/// <summary>
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/// 查询数据
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/// </summary>
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private static void Query(TwoStagePipelineBasedTaskExecutor<DataSet, object> pipeline, IEnumerable<TreeNode> selectedModules, List<IDataSeries> dataSeriesList, DateTime startTime, DateTime endTime,
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CancellationTokenSource cancellation, IProgress<ProgressUpdatingEventArgs> progressReporter = null)
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{
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pipeline.AppendFunc1(()=>
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SearchDataBaseAsync(
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selectedModules,
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new DateRangeHelper(startTime, endTime),
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cancellation,
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progressReporter));
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pipeline.AppendFunc2(ds =>
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{
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RenderChartAndTable(ds, dataSeriesList, cancellation, progressReporter);
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return null;
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});
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}
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/// <summary>
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/// 取消查询。
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/// </summary>
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public void CancelQuery()
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{
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Task.Run(() =>
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{
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if (_cancellationTokenSource?.Token.CanBeCanceled == true)
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{
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_cancellationTokenSource.Cancel();
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}
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Thread.Sleep(100);
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_progQueryUpdate.Report(new ProgressUpdatingEventArgs(100, 100, ""));
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_progChartSuspendUpdating.Report(false);
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});
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if (View is DataView view)
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view.dataGrid.CancelOperation();
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}
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/// <summary>
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/// 检查指定的表名是否存在。
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/// </summary>
|
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/// <param name="tableName"></param>
|
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/// <returns></returns>
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private static bool CheckTableExists(string tableName)
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{
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var sql =
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$"SELECT EXISTS ( SELECT FROM pg_tables WHERE schemaname = 'public' AND tablename = '{tableName}' );";
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var table = QueryDataClient.Instance.Service.QueryData(sql);
|
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if (table == null)
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return false;
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if (table.Rows.Count <= 0)
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return false;
|
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var value = table.Rows[0][0].ToString();
|
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if (value.ToLower() == "true")
|
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return true;
|
||
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return false;
|
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}
|
||
|
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/// <summary>
|
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/// 根据DataLog界面左侧项目树中选择的项目查询数据
|
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/// </summary>
|
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/// <returns></returns>
|
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private static DataSet SearchDataBaseAsync(
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IEnumerable<TreeNode> modules, DateRangeHelper dateRange,
|
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CancellationTokenSource cancellation = null,
|
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IProgress<ProgressUpdatingEventArgs> progressReporter = null)
|
||
{
|
||
|
||
var ds = new DataSet();
|
||
|
||
using (cancellation?.Token.Register(Thread.CurrentThread.Abort, true))
|
||
{
|
||
// 遍历模组
|
||
foreach (var module in modules)
|
||
{
|
||
// 如果当前根节点下没有被选中的终端节点，则忽略
|
||
if (module.ChildNodes.FirstOrDefault(x => (bool)x.HasTerminalSelected) == null)
|
||
continue;
|
||
|
||
string tblNameWithoutDay;
|
||
if (module.Name.StartsWith("IO"))
|
||
{
|
||
tblNameWithoutDay = $"{module.Name}";
|
||
}
|
||
else if (module.Name.StartsWith("PM"))
|
||
{
|
||
tblNameWithoutDay = $"{module.Name}";
|
||
}
|
||
else
|
||
{
|
||
tblNameWithoutDay = $"System";
|
||
}
|
||
|
||
|
||
if (module.Name.StartsWith("IO"))
|
||
{
|
||
foreach (var subIo in module.ChildNodes)
|
||
{
|
||
if(!subIo.HasTerminalSelected)
|
||
continue;
|
||
|
||
tblNameWithoutDay = subIo.FullName;
|
||
|
||
// 如果不是IO节点，则根节点名即为数据库名=
|
||
var dt = SearchSingleDbTable(tblNameWithoutDay, subIo, dateRange, cancellation, progressReporter);
|
||
if (dt != null)
|
||
ds.Tables.Add(dt);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (module.ChildNodes.FirstOrDefault(x => (bool)x.HasTerminalSelected) == null)
|
||
continue;
|
||
|
||
var dt = SearchSingleDbTable(tblNameWithoutDay, module, dateRange, cancellation,
|
||
progressReporter);
|
||
if (dt != null)
|
||
ds.Tables.Add(dt);
|
||
}
|
||
}
|
||
}
|
||
|
||
return ds;
|
||
}
|
||
|
||
/// <summary>
|
||
/// IO节点在数据库中的表名比较特殊，需要特殊处理。
|
||
/// </summary>
|
||
/// <param name="module"></param>
|
||
/// <param name="dateRange"></param>
|
||
/// <param name="cancellation"></param>
|
||
/// <param name="progressReporter"></param>
|
||
/// <returns></returns>
|
||
private static DataTable SearchSingleDbTable(string tableName, TreeNode module, DateRangeHelper dateRange,
|
||
CancellationTokenSource cancellation = null,
|
||
IProgress<ProgressUpdatingEventArgs> progressReporter = null)
|
||
{
|
||
var sql = new StringBuilder();
|
||
//! 因为数据库中按天拆表，无法一次性查询数据，需使用UNION合并多表查询，因此此处按天拼接SQL表达式
|
||
// 最终SQL表达式结构为：
|
||
// (select xx from date1.xx) union (select xx from date2.xx) union (select xx from date3.xx)
|
||
// where time between xxx and xxx
|
||
// order by time asc
|
||
var ts = dateRange.Diff;
|
||
for (var day = 0; day <= ts.Days; day++)
|
||
{
|
||
var tblName = $"{dateRange.Start.AddDays(day):yyyyMMdd}.{tableName}";
|
||
|
||
// 检查表名是否存在，否则SQL执行出错。
|
||
if (CheckTableExists(tblName))
|
||
{
|
||
|
||
sql.Append("select \"time\" AS InternalTimeStamp");
|
||
var selectedParams = module.Flatten(true)
|
||
.Where(x => x.IsSelected == true);
|
||
|
||
// 添加待查询的列
|
||
foreach (var item in selectedParams)
|
||
{
|
||
sql.Append("," + $"\"{item}\"");
|
||
}
|
||
|
||
sql.Append($" from \"{tblName}\" ");
|
||
|
||
if (day < ts.Days)
|
||
sql.Append(" UNION ");
|
||
}
|
||
}
|
||
|
||
// 所有表名不可用，可能是日期范围错误
|
||
if (sql.Length <= 0)
|
||
{
|
||
return null;
|
||
}
|
||
sql.Append(
|
||
$" where \"time\" between {dateRange.Start.Ticks} and {dateRange.End.Ticks} order by InternalTimeStamp asc");
|
||
progressReporter?.Report(new ProgressUpdatingEventArgs(20, 100,
|
||
$"Querying {dateRange}..."));
|
||
|
||
if (cancellation?.Token.IsCancellationRequested == true)
|
||
return null;
|
||
|
||
// 查询数据并将返回的结果存储在DataSet中
|
||
var dataTable = QueryDataClient.Instance.Service.QueryData(sql.ToString());
|
||
|
||
if (cancellation?.Token.IsCancellationRequested == true)
|
||
return null;
|
||
|
||
//! 返回的 DataTable 可能不存在，原因是上述代码自动生成的表明可能不存在。
|
||
if (dataTable == null)
|
||
return null;
|
||
|
||
dataTable.TableName = module.FullName;
|
||
return dataTable;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 渲染图表。
|
||
/// </summary>
|
||
/// <param name="ds"></param>
|
||
/// <param name="dataSeriesList"></param>
|
||
/// <param name="cancellation"></param>
|
||
/// <param name="progressReporter"></param>
|
||
/// <exception cref="Exception"></exception>
|
||
private static void RenderChartAndTable(
|
||
DataSet ds, List<IDataSeries> dataSeriesList,
|
||
CancellationTokenSource cancellation = null,
|
||
IProgress<ProgressUpdatingEventArgs> progressReporter = null)
|
||
{
|
||
if (ds == null || ds.Tables.Count <= 0)
|
||
return;
|
||
|
||
// 一个Table一个模组
|
||
foreach (var table in ds.Tables.Cast<DataTable>())
|
||
{
|
||
if (table.Rows.Count <= 0)
|
||
continue;
|
||
|
||
// 一列对应模组中的某个数据记录点
|
||
foreach (var col in table.Columns.Cast<DataColumn>())
|
||
{
|
||
// 忽略时间列
|
||
if (col.Ordinal == 0)
|
||
continue;
|
||
|
||
|
||
var fullName = col.ColumnName;
|
||
|
||
var dataSeries =
|
||
dataSeriesList.FirstOrDefault(x => x.SeriesName == fullName) as XyDataSeries<DateTime, double>;
|
||
|
||
if (dataSeries == null)
|
||
continue;
|
||
|
||
var rows = table.Rows;
|
||
var dateList = new List<DateTime>();
|
||
var valueList = new List<double>();
|
||
var metaList = new List<ParameterNodePoint>();
|
||
|
||
for (var i = 0; i < rows.Count; i++)
|
||
{
|
||
var date = new DateTime(long.Parse(rows[i][0].ToString()));
|
||
var cellValue = rows[i][col];
|
||
var value = double.NaN;
|
||
|
||
if (cellValue is bool b)
|
||
value = b ? 1 : 0;
|
||
else if (double.TryParse(cellValue.ToString(), out var num))
|
||
value = num;
|
||
else
|
||
value = 0;
|
||
|
||
dateList.Add(date);
|
||
valueList.Add(value);
|
||
metaList.Add(new ParameterNodePoint(date, value));
|
||
|
||
if (cancellation?.Token.IsCancellationRequested == true)
|
||
return;
|
||
}
|
||
|
||
if (cancellation?.Token.IsCancellationRequested == true)
|
||
return;
|
||
|
||
dataSeries.Append(dateList, valueList, metaList);
|
||
if(dataSeries is SicFastLineDataSeries ss)
|
||
ss.UpdateChartSeriesValue(); // 应用Factor和Offset
|
||
}
|
||
|
||
if (cancellation?.Token.IsCancellationRequested == true)
|
||
return;
|
||
|
||
// 每一轮更新完毕后会恢复Chart刷新，
|
||
// 数据量太小时会频繁挂起和恢复Chart，导致Chart不刷新，需要稍等一下UI。
|
||
Thread.Sleep(50);
|
||
}
|
||
}
|
||
|
||
public void Exporting(object sender, EventArgs e)
|
||
{
|
||
BusyIndicatorContent = "Exporting Start ...";
|
||
IsBusy = true;
|
||
}
|
||
|
||
public void Exported(object sender, EventArgs e)
|
||
{
|
||
IsBusy = false;
|
||
}
|
||
|
||
public void Deleted(object sender, EventArgs e)
|
||
{
|
||
((DataView)View).tvParameterNodes.ClearPresetGroupSelectionOnly();
|
||
}
|
||
|
||
public void ProgressUpdating(object sender, ProgressUpdatingEventArgs e)
|
||
{
|
||
_progCsvExport.Report(e);
|
||
}
|
||
|
||
#endregion
|
||
}
|
||
}
|