From 2ab54573d10ca59351100ab8416178be2223fc91 Mon Sep 17 00:00:00 2001
From: Roy Ben-Shabat <Roy@Twine-s.com>
Date: Wed, 27 Feb 2019 16:49:42 +0200
Subject: Added support for caching on machine studio.

---
 .../MachineStudioSettings.cs                         | 13 +++++++++++++
 .../MachineStudio/Tango.MachineStudio.UI/App.xaml.cs | 20 ++++++++++++++++++++
 .../Tango.MachineStudio.UI/Views/AboutView.xaml      |  7 +++++++
 3 files changed, 40 insertions(+)

(limited to 'Software/Visual_Studio/MachineStudio')

diff --git a/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.Common/MachineStudioSettings.cs b/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.Common/MachineStudioSettings.cs
index f7c05c1a8..e5fe63d87 100644
--- a/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.Common/MachineStudioSettings.cs
+++ b/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.Common/MachineStudioSettings.cs
@@ -5,6 +5,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows;
+using Tango.BL;
 using Tango.Logging;
 using Tango.PMR.Printing;
 using Tango.Settings;
@@ -107,6 +108,16 @@ namespace Tango.MachineStudio.Common
         /// </summary>
         public bool ByPassEnvironmentVersionCheck { get; set; }
 
+        /// <summary>
+        /// Gets or sets a value indicating whether to enable database entity caching.
+        /// </summary>
+        public ObservablesContextInMemoryCachingMode CachingMode { get; set; }
+
+        /// <summary>
+        /// Gets or sets the maximum cache time for a single entity (when CachingMode is set Absolute or Relative).
+        /// </summary>
+        public TimeSpan MaximumCacheTime { get; set; }
+
         /// <summary>
         /// Gets the machine service address.
         /// </summary>
@@ -136,6 +147,8 @@ namespace Tango.MachineStudio.Common
             Environment = WorkingEnvironment.Remote;
             DeploymentSlot = DeploymentSlot.DEV;
             JobUploadStrategy = JobUploadStrategy.Default;
+            MaximumCacheTime = TimeSpan.FromMinutes(5);
+            CachingMode = ObservablesContextInMemoryCachingMode.None;
         }
     }
 }
diff --git a/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.UI/App.xaml.cs b/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.UI/App.xaml.cs
index d4598867c..2e2b1a014 100644
--- a/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.UI/App.xaml.cs
+++ b/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.UI/App.xaml.cs
@@ -84,6 +84,26 @@ namespace Tango.MachineStudio.UI
             exceptionTrapper = new WpfGlobalExceptionTrapper();
             exceptionTrapper.Initialize(this);
             exceptionTrapper.ApplicationCrashed += ExceptionTrapper_ApplicationCrashed;
+
+            //Apply Caching
+            if (settings.CachingMode != ObservablesContextInMemoryCachingMode.None)
+            {
+                LogManager.Log("EF Caching is enabled.");
+                LogManager.Log($"EF Caching mode is: {settings.CachingMode}.");
+                LogManager.Log($"EF Caching timeout: {settings.MaximumCacheTime.ToString()}");
+                try
+                {
+                    ObservablesContext.EnableInMemoryCache(settings.MaximumCacheTime, settings.CachingMode);
+                }
+                catch (Exception ex)
+                {
+                    LogManager.Log(ex, "Error while trying to activate EF caching.");
+                }
+            }
+            else
+            {
+                LogManager.Log("EF Caching is disabled");
+            }
         }
 
         #region Global Exception Trapping
diff --git a/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.UI/Views/AboutView.xaml b/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.UI/Views/AboutView.xaml
index 640c3c1df..54a8349e6 100644
--- a/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.UI/Views/AboutView.xaml
+++ b/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.UI/Views/AboutView.xaml
@@ -6,6 +6,7 @@
              xmlns:vm="clr-namespace:Tango.MachineStudio.UI.ViewModels"
              xmlns:controls="clr-namespace:Tango.SharedUI.Controls;assembly=Tango.SharedUI"
              xmlns:converters="clr-namespace:Tango.SharedUI.Converters;assembly=Tango.SharedUI"
+             xmlns:bl="clr-namespace:Tango.BL;assembly=Tango.BL"
              xmlns:local="clr-namespace:Tango.MachineStudio.UI.Views"
              mc:Ignorable="d" 
              d:DesignHeight="300" d:DesignWidth="300" Width="600" Height="700" Background="White" d:DataContext="{d:DesignInstance Type=vm:AboutViewVM, IsDesignTimeCreatable=False}" DataContext="{Binding AboutViewVM, Source={StaticResource Locator}}">
@@ -13,6 +14,7 @@
     <UserControl.Resources>
         <converters:VersionToShortVersionConverter x:Key="VersionToShortVersionConverter" />
         <converters:EnumToDescriptionConverter x:Key="EnumToDescriptionConverter" />
+        <converters:EnumToItemsSourceConverter x:Key="EnumToItemsSourceConverter" />
     </UserControl.Resources>
 
     <Grid>
@@ -60,6 +62,11 @@
                             <TextBlock><Run Text="{Binding DataSource.Address,Mode=OneWay}"></Run>
                                 <Run>(</Run><Run Foreground="Gray" Text="{Binding DataSource.Catalog,Mode=OneWay}"></Run><Run>)</Run>
                             </TextBlock>
+                            <TextBlock FontWeight="SemiBold">Caching Mode:</TextBlock>
+                            <DockPanel>
+                                <ComboBox Width="150" DockPanel.Dock="Left" ItemsSource="{Binding Source={x:Type bl:ObservablesContextInMemoryCachingMode},Converter={StaticResource EnumToItemsSourceConverter}}" SelectedValue="{Binding MachineStudioSettings.CachingMode}" SelectedValuePath="Value" DisplayMemberPath="DisplayName"></ComboBox>
+                                <TextBlock Margin="20 0 0 0" Foreground="Gray" VerticalAlignment="Center">(Requires restart)</TextBlock>
+                            </DockPanel>
                         </controls:TableGrid>
 
                         <DockPanel Margin="0 0 0 0">
-- 
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