Including Orchard.TaskLease

--HG--
branch : 1.x

src/Orchard.Web/Modules/Orchard.TaskLease/Migrations.cs

@@ -0,0 +1,23 @@
+using System;
+using Orchard.ContentManagement.MetaData;
+using Orchard.Core.Contents.Extensions;
+using Orchard.Data.Migration;
+
+namespace Orchard.TaskLease {
+    public class TaskLeaseMigrations : DataMigrationImpl {
+
+        public int Create() {
+            SchemaBuilder.CreateTable("TaskLeaseRecord",
+                table => table
+                    .Column<int>("Id", column => column.PrimaryKey().Identity())
+                    .Column<string>("TaskName")
+                    .Column<string>("MachineName")
+                    .Column<DateTime>("UpdatedUtc")
+                    .Column<DateTime>("ExpiredUtc")
+                    .Column<string>("State", c => c.Unlimited())
+                );
+
+            return 1;
+        }
+    }
+}

src/Orchard.Web/Modules/Orchard.TaskLease/Models/TaskLeaseRecord.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+using Orchard.Data.Conventions;
+
+namespace Orchard.TaskLease.Models
+{
+    public class TaskLeaseRecord
+    {
+        public virtual int Id { get; set; }
+        public virtual string TaskName { get; set; }
+        public virtual string MachineName { get; set; }
+        public virtual DateTime UpdatedUtc { get; set; }
+        public virtual DateTime ExpiredUtc { get; set; }
+
+        [StringLengthMax]
+        public virtual string State { get; set; }
+    }
+}

src/Orchard.Web/Modules/Orchard.TaskLease/Module.txt

@@ -0,0 +1,8 @@
+Name: Task Lease
+AntiForgery: enabled
+Author: The Orchard Team
+Website: http://orchardtasklease.codeplex.com
+Version: 1.4.2
+OrchardVersion: 1.4.2
+Description: Provides services to synchronize tasks in a farm environment
+Category: Hosting

src/Orchard.Web/Modules/Orchard.TaskLease/Orchard.TaskLease.csproj

@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>9.0.30729</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{3F72A4E9-7B72-4260-B010-C16EC54F9BAF}</ProjectGuid>
+    <ProjectTypeGuids>{349c5851-65df-11da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Orchard.TaskLease</RootNamespace>
+    <AssemblyName>Orchard.TaskLease</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <MvcBuildViews>false</MvcBuildViews>
+    <FileUpgradeFlags>
+    </FileUpgradeFlags>
+    <OldToolsVersion>4.0</OldToolsVersion>
+    <UpgradeBackupLocation>
+    </UpgradeBackupLocation>
+    <TargetFrameworkProfile />
+    <UseIISExpress>false</UseIISExpress>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.ComponentModel.DataAnnotations">
+      <RequiredTargetFramework>3.5</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="System.Web.DynamicData" />
+    <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Web" />
+    <Reference Include="System.Web.Abstractions" />
+    <Reference Include="System.Web.Routing" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Configuration" />
+    <Reference Include="System.Xml.Linq" />
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="Web.config" />
+    <Content Include="Views\Web.config" />
+    <Content Include="Scripts\Web.config" />
+    <Content Include="Styles\Web.config" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Content Include="Module.txt" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Migrations.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Models\TaskLeaseRecord.cs" />
+    <Compile Include="Services\MachineNameProvider.cs" />
+    <Compile Include="Services\IMachineNameProvider.cs" />
+    <Compile Include="Services\ITaskLeaseService.cs" />
+    <Compile Include="Services\TaskLeaseService.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Tests\" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Orchard\Orchard.Framework.csproj">
+      <Project>{2D1D92BB-4555-4CBE-8D0E-63563D6CE4C6}</Project>
+      <Name>Orchard.Framework</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\Core\Orchard.Core.csproj">
+      <Project>{9916839C-39FC-4CEB-A5AF-89CA7E87119F}</Project>
+      <Name>Orchard.Core</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <Import Project="$(VSToolsPath)\WebApplications\Microsoft.WebApplication.targets" Condition="'$(VSToolsPath)' != ''" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" Condition="false" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target> -->
+  <Target Name="AfterBuild" DependsOnTargets="AfterBuildCompiler">
+    <PropertyGroup>
+      <AreasManifestDir>$(ProjectDir)\..\Manifests</AreasManifestDir>
+    </PropertyGroup>
+    <!-- If this is an area child project, uncomment the following line:
+    <CreateAreaManifest AreaName="$(AssemblyName)" AreaType="Child" AreaPath="$(ProjectDir)" ManifestPath="$(AreasManifestDir)" ContentFiles="@(Content)" />
+    -->
+    <!-- If this is an area parent project, uncomment the following lines:
+    <CreateAreaManifest AreaName="$(AssemblyName)" AreaType="Parent" AreaPath="$(ProjectDir)" ManifestPath="$(AreasManifestDir)" ContentFiles="@(Content)" />
+    <CopyAreaManifests ManifestPath="$(AreasManifestDir)" CrossCopy="false" RenameViews="true" />
+    -->
+  </Target>
+  <Target Name="AfterBuildCompiler" Condition="'$(MvcBuildViews)'=='true'">
+    <AspNetCompiler VirtualPath="temp" PhysicalPath="$(ProjectDir)\..\$(ProjectName)" />
+  </Target>
+  <ProjectExtensions>
+    <VisualStudio>
+      <FlavorProperties GUID="{349c5851-65df-11da-9384-00065b846f21}">
+        <WebProjectProperties>
+          <UseIIS>False</UseIIS>
+          <AutoAssignPort>True</AutoAssignPort>
+          <DevelopmentServerPort>45979</DevelopmentServerPort>
+          <DevelopmentServerVPath>/</DevelopmentServerVPath>
+          <IISUrl>
+          </IISUrl>
+          <NTLMAuthentication>False</NTLMAuthentication>
+          <UseCustomServer>True</UseCustomServer>
+          <CustomServerUrl>http://orchard.codeplex.com</CustomServerUrl>
+          <SaveServerSettingsInUserFile>False</SaveServerSettingsInUserFile>
+        </WebProjectProperties>
+      </FlavorProperties>
+    </VisualStudio>
+  </ProjectExtensions>
+</Project>

src/Orchard.Web/Modules/Orchard.TaskLease/Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Security;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("Orchard.TaskLease")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyProduct("Orchard")]
+[assembly: AssemblyCopyright("Copyright <20> Outercurve Foundation 2009")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("3320c438-e92b-4753-bfe5-944f29d13ded")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers 
+// by using the '*' as shown below:
+[assembly: AssemblyVersion("1.4.2")]
+[assembly: AssemblyFileVersion("1.4.2")]
+

src/Orchard.Web/Modules/Orchard.TaskLease/Scripts/Web.config

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <appSettings>
+    <add key="webpages:Enabled" value="false" />
+  </appSettings>
+  <system.web>
+    <httpHandlers>
+      <!-- iis6 - for any request in this location, return via managed static file handler -->
+      <add path="*" verb="*" type="System.Web.StaticFileHandler" />
+    </httpHandlers>
+  </system.web>
+  <system.webServer>
+    <staticContent>
+      <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="7.00:00:00" />
+    </staticContent>
+
+    <handlers accessPolicy="Script,Read">
+      <!--
+      iis7 - for any request to a file exists on disk, return it via native http module.
+      accessPolicy 'Script' is to allow for a managed 404 page.
+      -->
+      <add name="StaticFile" path="*" verb="*" modules="StaticFileModule" preCondition="integratedMode" resourceType="File" requireAccess="Read" />
+    </handlers>
+  </system.webServer>
+</configuration>

src/Orchard.Web/Modules/Orchard.TaskLease/Services/IMachineNameProvider.cs

@@ -0,0 +1,16 @@
+namespace Orchard.TaskLease.Services
+{
+    /// <summary>
+    /// Describes a service which returns a name for the machine running the application.
+    /// </summary>
+    /// <remarks>
+    /// Should be delocalized to IHostEnvironment in a leter version
+    /// </remarks>
+    public interface IMachineNameProvider : IDependency
+    {
+        /// <summary>
+        /// Returns the current machine's name
+        /// </summary>
+        string GetMachineName();
+    }
+}

src/Orchard.Web/Modules/Orchard.TaskLease/Services/ITaskLeaseService.cs

@@ -0,0 +1,28 @@
+using System;
+using Orchard.TaskLease.Models;
+
+namespace Orchard.TaskLease.Services
+{
+    /// <summary>
+    /// Describes a service to save and acquire task leases. A task lease can't be acquired by two different machines,
+    /// for a specific amount of time. Optionnally a State can be saved along with the lease.
+    /// </summary>
+    public interface ITaskLeaseService : IDependency
+    {
+        /// <summary>
+        /// Acquires a lease for the specified task name, and amount of time.
+        /// </summary>
+        /// <returns>The state of the lease if it was acquired, otherwise <c>null</c>.</returns>
+        string Acquire(string taskName, DateTime expiredUtc);
+
+        /// <summary>
+        /// Updates a lease for the current machine if it exists
+        /// </summary>
+        void Update(string taskName, string state);
+
+        /// <summary>
+        /// Updates a lease for the current machine if it exists
+        /// </summary>
+        void Update(string taskName, string state, DateTime expiredUtc);
+    }
+}

src/Orchard.Web/Modules/Orchard.TaskLease/Services/MachineNameProvider.cs

@@ -0,0 +1,10 @@
+namespace Orchard.TaskLease.Services
+{
+    public class MachineNameProvider : IMachineNameProvider
+    {
+        public string GetMachineName()
+        {
+            return System.Environment.MachineName;
+        }
+    }
+}

src/Orchard.Web/Modules/Orchard.TaskLease/Services/TaskLeaseService.cs

@@ -0,0 +1,101 @@
+using System;
+using Orchard.Data;
+using Orchard.Services;
+using Orchard.TaskLease.Models;
+
+namespace Orchard.TaskLease.Services
+{
+    /// <summary>
+    /// Provides a database driven implementation of <see cref="ITaskLeaseService" />
+    /// </summary>
+    public class TaskLeaseService : ITaskLeaseService
+    {
+        private readonly IRepository<TaskLeaseRecord> _repository;
+        private readonly IClock _clock;
+        private readonly IMachineNameProvider _machineNameProvider;
+
+        public TaskLeaseService(
+            IRepository<TaskLeaseRecord> repository, 
+            IClock clock,
+            IMachineNameProvider machineNameProvider)
+        {
+            _repository = repository;
+            _clock = clock;
+            _machineNameProvider = machineNameProvider;
+        }
+
+        public string Acquire(string taskName, DateTime expiredUtc)
+        {
+            var machineName = _machineNameProvider.GetMachineName();
+
+            // retrieve current lease for the specified task
+            var taskLease = _repository.Get(x => x.TaskName == taskName);
+
+            // create a new lease if there is no current lease for this task
+            if (taskLease == null)
+            {
+                taskLease = new TaskLeaseRecord {
+                                    TaskName = taskName,
+                                    MachineName = machineName,
+                                    State = String.Empty,
+                                    UpdatedUtc = _clock.UtcNow,
+                                    ExpiredUtc = expiredUtc
+                                };
+
+                _repository.Create(taskLease);
+                _repository.Flush();
+
+                return String.Empty;
+            }
+
+            // lease can't be aquired only if for a different machine and it has not expired
+            if (taskLease.MachineName != machineName && taskLease.ExpiredUtc >= _clock.UtcNow)
+            {
+                return null;
+            }
+
+            // otherwise update information
+            taskLease.MachineName = machineName;
+            taskLease.UpdatedUtc = _clock.UtcNow;
+            taskLease.ExpiredUtc = expiredUtc;
+
+            _repository.Flush();
+
+            return taskLease.State;
+        }
+
+        public void Update(string taskName, string state)
+        {
+            var machineName = _machineNameProvider.GetMachineName();
+
+            // retrieve current lease for the specified task
+            var taskLease = _repository.Get(x => x.TaskName == taskName && x.MachineName == machineName);
+
+            if(taskLease == null)
+            {
+                return;
+            }
+
+            taskLease.State = state;
+            _repository.Flush();
+        }
+
+        public void Update(string taskName, string state, DateTime expiredUtc)
+        {
+            var machineName = _machineNameProvider.GetMachineName();
+
+            // retrieve current lease for the specified task
+            var taskLease = _repository.Get(x => x.TaskName == taskName && x.MachineName == machineName);
+
+            if (taskLease == null)
+            {
+                return;
+            }
+
+            taskLease.ExpiredUtc = expiredUtc;
+            taskLease.State = state;
+
+            _repository.Flush();
+        }
+    }
+}

src/Orchard.Web/Modules/Orchard.TaskLease/Styles/Web.config

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <appSettings>
+    <add key="webpages:Enabled" value="false" />
+  </appSettings>
+  <system.web>
+    <httpHandlers>
+      <!-- iis6 - for any request in this location, return via managed static file handler -->
+      <add path="*" verb="*" type="System.Web.StaticFileHandler" />
+    </httpHandlers>
+  </system.web>
+  <system.webServer>
+    <staticContent>
+      <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="7.00:00:00" />
+    </staticContent>
+
+    <handlers accessPolicy="Script,Read">
+      <!--
+      iis7 - for any request to a file exists on disk, return it via native http module.
+      accessPolicy 'Script' is to allow for a managed 404 page.
+      -->
+      <add name="StaticFile" path="*" verb="*" modules="StaticFileModule" preCondition="integratedMode" resourceType="File" requireAccess="Read" />
+    </handlers>
+  </system.webServer>
+</configuration>

src/Orchard.Web/Modules/Orchard.TaskLease/Tests/Orchard.TaskLease.Tests/Orchard.TaskLease.Tests.csproj

@@ -0,0 +1,108 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{3FD9FA96-F7C9-4E98-BF17-DC75D07B7307}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Orchard.TaskLease.Tests</RootNamespace>
+    <AssemblyName>Orchard.TaskLease.Tests</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <TargetFrameworkProfile>
+    </TargetFrameworkProfile>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+    <PlatformTarget>x86</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+    <PlatformTarget>x86</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup>
+    <StartupObject />
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="Autofac, Version=2.2.4.900, Culture=neutral, PublicKeyToken=17863af14b0044da, processorArchitecture=MSIL" />
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+    <Reference Include="NHibernate.ByteCode.Castle">
+      <HintPath>..\..\..\..\..\..\lib\fluentnhibernate\NHibernate.ByteCode.Castle.dll</HintPath>
+    </Reference>
+    <Reference Include="nunit.framework">
+      <HintPath>..\..\..\Contrib.RewriteRules\bin\nunit.framework.dll</HintPath>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Data.SqlServerCe, Version=4.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\..\..\..\..\..\lib\sqlce\System.Data.SqlServerCe.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+    <Reference Include="WindowsBase" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Services\TaskLeaseServiceTests.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\..\Orchard.Tests.Modules\Orchard.Tests.Modules.csproj">
+      <Project>{6CB3EB30-F725-45C0-9742-42599BA8E8D2}</Project>
+      <Name>Orchard.Tests.Modules</Name>
+    </ProjectReference>
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+      <Project>{ABC826D4-2FA1-4F2F-87DE-E6095F653810}</Project>
+      <Name>Orchard.Framework.Tests</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\..\..\..\Orchard\Orchard.Framework.csproj">
+      <Project>{2D1D92BB-4555-4CBE-8D0E-63563D6CE4C6}</Project>
+      <Name>Orchard.Framework</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\..\..\Core\Orchard.Core.csproj">
+      <Project>{9916839C-39FC-4CEB-A5AF-89CA7E87119F}</Project>
+      <Name>Orchard.Core</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\Orchard.TaskLease.csproj">
+      <Project>{3F72A4E9-7B72-4260-B010-C16EC54F9BAF}</Project>
+      <Name>Orchard.TaskLease</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup />
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+  <Target Name="CopySqlCeBinaries">
+    <ItemGroup>
+      <SqlCeBinariesx86 Include="$(ProjectDir)..\..\lib\sqlce\x86\**\*" />
+      <SqlCeBinariesx64 Include="$(ProjectDir)..\..\lib\sqlce\amd64\**\*" />
+    </ItemGroup>
+    <Copy SourceFiles="@(SqlCeBinariesx86)" DestinationFolder="$(OutputPath)\x86\%(RecursiveDir)" SkipUnchangedFiles="true" />
+    <Copy SourceFiles="@(SqlCeBinariesx64)" DestinationFolder="$(OutputPath)\amd64\%(RecursiveDir)" SkipUnchangedFiles="true" />
+  </Target>
+  <Target Name="AfterBuild">
+    <CallTarget Targets="CopySqlCeBinaries" />
+  </Target>
+</Project>

src/Orchard.Web/Modules/Orchard.TaskLease/Tests/Orchard.TaskLease.Tests/Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("Orchard.TaskLease.Tests")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("Microsoft")]
+[assembly: AssemblyProduct("Orchard.TaskLease.Tests")]
+[assembly: AssemblyCopyright("Copyright © Microsoft 2011")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("0435ceba-eada-4dc4-aa03-74a68ccca515")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

src/Orchard.Web/Modules/Orchard.TaskLease/Tests/Orchard.TaskLease.Tests/Services/TaskLeaseServiceTests.cs

@@ -0,0 +1,97 @@
+using System;
+using System.Collections.Generic;
+using Autofac;
+using Moq;
+using NUnit.Framework;
+using Orchard.TaskLease.Models;
+using Orchard.TaskLease.Services;
+using Orchard.Tests.Modules;
+
+namespace Orchard.TaskLease.Tests.Services
+{
+    [TestFixture]
+    public class TaskLeaseServiceTests : DatabaseEnabledTestsBase
+    {
+        private ITaskLeaseService _service;
+        private Mock<IMachineNameProvider> _machineNameProvider;
+
+        protected override IEnumerable<Type> DatabaseTypes
+        {
+            get
+            {
+                return new[] {
+                    typeof (TaskLeaseRecord)
+                };
+            }
+        }
+
+        public override void Register(ContainerBuilder builder)
+        {
+            builder.RegisterType<TaskLeaseService>().As<ITaskLeaseService>();
+            builder.RegisterInstance((_machineNameProvider = new Mock<IMachineNameProvider>()).Object);
+
+            _machineNameProvider.Setup(x => x.GetMachineName()).Returns("SkyNet");
+        }
+
+        public override void Init()
+        {
+            base.Init();
+            _service = _container.Resolve<ITaskLeaseService>();
+        }
+
+        [Test]
+        public void AcquireShouldSucceedIfNoTask()
+        {
+            var state = _service.Acquire("Foo", _clock.UtcNow.AddDays(1));
+            Assert.That(state, Is.EqualTo(String.Empty));
+        }
+
+        [Test]
+        public void AcquireShouldSucceedIfTaskBySameMachine()
+        {
+            var state = _service.Acquire("Foo", _clock.UtcNow.AddDays(1));
+            Assert.That(state, Is.EqualTo(String.Empty));
+
+            state = _service.Acquire("Foo", _clock.UtcNow.AddDays(1));
+            Assert.That(state, Is.EqualTo(String.Empty));
+        }
+
+        [Test]
+        public void AcquireShouldNotSucceedIfTaskByOtherMachine()
+        {
+            var state = _service.Acquire("Foo", _clock.UtcNow.AddDays(1));
+            Assert.That(state, Is.EqualTo(String.Empty));
+
+            _machineNameProvider.Setup(x => x.GetMachineName()).Returns("TheMatrix");
+
+            state = _service.Acquire("Foo", _clock.UtcNow.AddDays(1));
+            Assert.That(state, Is.EqualTo(null));
+        }
+
+        [Test]
+        public void ShouldUpdateTask()
+        {
+            var state = _service.Acquire("Foo", _clock.UtcNow.AddDays(1));
+            Assert.That(state, Is.EqualTo(String.Empty));
+
+            _service.Update("Foo", "Other");
+            state = _service.Acquire("Foo", _clock.UtcNow.AddDays(1));
+
+            Assert.That(state, Is.EqualTo("Other"));
+        }
+
+        [Test]
+        public void AcquireShouldSucceedIfTaskByOtherMachineAndExpired()
+        {
+            var state = _service.Acquire("Foo", _clock.UtcNow.AddDays(1));
+            Assert.That(state, Is.EqualTo(String.Empty));
+
+            _machineNameProvider.Setup(x => x.GetMachineName()).Returns("TheMatrix");
+            _clock.Advance(new TimeSpan(2,0,0,0));
+
+            state = _service.Acquire("Foo", _clock.UtcNow.AddDays(1));
+            Assert.That(state, Is.EqualTo(String.Empty));
+
+        }
+    }
+}

src/Orchard.Web/Modules/Orchard.TaskLease/Views/Web.config

@@ -0,0 +1,41 @@
+<?xml version="1.0"?>
+<configuration>
+  <appSettings>
+    <add key="webpages:Enabled" value="false" />
+  </appSettings>
+  <system.web>
+    <httpHandlers>
+    </httpHandlers>
+
+    <!--
+        Enabling request validation in view pages would cause validation to occur
+        after the input has already been processed by the controller. By default
+        MVC performs request validation before a controller processes the input.
+        To change this behavior apply the ValidateInputAttribute to a
+        controller or action.
+    -->
+    <pages
+        validateRequest="false"
+        pageParserFilterType="System.Web.Mvc.ViewTypeParserFilter, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"
+        pageBaseType="System.Web.Mvc.ViewPage, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"
+        userControlBaseType="System.Web.Mvc.ViewUserControl, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+      <controls>
+        <add assembly="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL" namespace="System.Web.Mvc" tagPrefix="mvc" />
+      </controls>
+    </pages>
+  </system.web>
+
+  <system.webServer>
+    <validation validateIntegratedModeConfiguration="false"/>
+    <handlers>
+    </handlers>
+  </system.webServer>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="2.0.0.0" newVersion="3.0.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>

src/Orchard.Web/Modules/Orchard.TaskLease/Web.config

@@ -0,0 +1,41 @@
+<?xml version="1.0"?>
+<configuration>
+
+  <configSections>
+    <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
+      <remove name="host" />
+      <remove name="pages" />
+      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
+      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
+    </sectionGroup>
+  </configSections>
+
+  <system.web.webPages.razor>
+    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
+    <pages pageBaseType="Orchard.Mvc.ViewEngines.Razor.WebViewPage">
+      <namespaces>
+        <add namespace="System.Web.Mvc" />
+        <add namespace="System.Web.Mvc.Ajax" />
+        <add namespace="System.Web.Mvc.Html" />
+        <add namespace="System.Web.Routing" />
+        <add namespace="System.Web.WebPages" />
+        <add namespace="System.Linq"/>
+        <add namespace="System.Collections.Generic"/>
+        <add namespace="Orchard.Mvc.Html"/>
+      </namespaces>
+    </pages>
+  </system.web.webPages.razor>
+
+  <system.web>
+    <compilation targetFramework="4.0">
+      <assemblies>
+        <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
+        <add assembly="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
+        <add assembly="System.Web.WebPages, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+      </assemblies>
+    </compilation>
+  </system.web>
+
+</configuration>