Add incremental build and project references to java projects (#25707)

* Add incremental build and project references to java projects

* fb

* fix version

Directory.Build.props

@@ -217,6 +217,7 @@
   <Import Project="eng\targets\CSharp.Common.props"  Condition="'$(MSBuildProjectExtension)' == '.csproj'" />
   <Import Project="eng\targets\Wix.Common.props"  Condition="'$(MSBuildProjectExtension)' == '.wixproj'" />
   <Import Project="eng\targets\Npm.Common.props"  Condition="'$(MSBuildProjectExtension)' == '.npmproj'" />
+  <Import Project="eng\targets\Java.Common.props"  Condition="'$(MSBuildProjectExtension)' == '.javaproj'" />
   <Import Project="eng\targets\Helix.props" Condition="'$(IsTestProject)' == 'true'" />
 
 </Project>

Directory.Build.targets

@@ -186,6 +186,7 @@
   <Import Project="eng\targets\FSharp.Common.targets"  Condition="'$(MSBuildProjectExtension)' == '.fsproj'" />
   <Import Project="eng\targets\Wix.Common.targets"  Condition="'$(MSBuildProjectExtension)' == '.wixproj'" />
   <Import Project="eng\targets\Npm.Common.targets"  Condition="'$(MSBuildProjectExtension)' == '.npmproj'" />
+  <Import Project="eng\targets\Java.Common.targets"  Condition="'$(MSBuildProjectExtension)' == '.javaproj'" />
   <Import Project="eng\targets\Helix.targets" Condition="'$(IsTestProject)' == 'true'" />
   <Import Project="eng\targets\FunctionalTestAsset.targets" Condition="'$(IsTestAssetProject)' == 'true'" />
   <Import Project="eng\targets\FunctionalTestWithAssets.targets" Condition="'$(ContainsFunctionalTestAssets)' == 'true'" />

eng/targets/Java.Common.props

@@ -0,0 +1,7 @@
+<Project>
+  <PropertyGroup>
+    <!-- Disable gradle daemon on CI since the CI seems to try to wait for the daemon to shut down, which it doesn't do -->
+    <GradleOptions Condition="'$(ContinuousIntegrationBuild)' == 'true'">$(GradleOptions) -Dorg.gradle.daemon=false</GradleOptions>
+    <PackOnBuild>false</PackOnBuild>
+  </PropertyGroup>
+</Project>

eng/targets/Java.Common.targets

@@ -0,0 +1,77 @@
+<Project DefaultTargets="Build">
+
+  <PropertyGroup>
+    <BaseIntermediateOutputPath Condition="'$(BaseIntermediateOutputPath)' == ''">$(ArtifactsDir)\obj\</BaseIntermediateOutputPath>
+    <IntermediateOutputPath>$([MSBuild]::NormalizeDirectory('$(BaseIntermediateOutputPath)'))$(Configuration)\</IntermediateOutputPath>
+    <BuildDependsOn>
+      PrepareForBuild;
+      ResolveProjectReferences;
+      _Build;
+    </BuildDependsOn>
+    <JavaBuildArgs Condition="'$(JavaBuildArgs)' == ''">../gradlew $(GradleOptions) compileJava</JavaBuildArgs>
+    <GradleOptions>$(GradleOptions) -PpackageVersion="$(PackageVersion)"</GradleOptions>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <JavaFiles Include="src\**\*.java" />
+    <JavaFiles Include="*.javaproj" />
+    <JavaFiles Include="build.gradle" />
+
+    <BuildOutputFiles Include="$(BaseIntermediateOutputPath)build-sentinel" />
+  </ItemGroup>
+
+  <Target Name="Restore" />
+
+  <Target Name="PrepareForBuild">
+    <MakeDir Directories="$(IntermediateOutputPath);$(PackageOutputPath)"  />
+  </Target>
+
+  <Target Name="ResolveProjectReferences">
+    <MSBuild Projects="@(ProjectReference)"
+             BuildInParallel="true" />
+  </Target>
+
+  <Target Name="Build" DependsOnTargets="$(BuildDependsOn)" />
+
+  <Target Name="GetBuildInputCacheFile">
+    <Hash ItemsToHash="@(JavaFiles)">
+      <Output TaskParameter="HashResult" PropertyName="_JavaFileHash" />
+    </Hash>
+
+    <WriteLinesToFile
+      Lines="$(_JavaFileHash)"
+      File="$(BaseIntermediateOutputPath)javafiles.cache"
+      Overwrite="True"
+      WriteOnlyWhenDifferent="True" />
+  </Target>
+
+  <Target Name="_Build"
+    Condition="'$(IsBuildable)' != 'false'"
+    DependsOnTargets="GetBuildInputCacheFile"
+    Inputs="@(JavaFiles);$(BaseIntermediateOutputPath)javafiles.cache"
+    Outputs="@(BuildOutputFiles)">
+    <Telemetry EventName="NETCORE_ENGINEERING_TELEMETRY" EventData="Category=Build" />
+    <Exec Command="$(JavaBuildArgs)" />
+    <WriteLinesToFile Overwrite="true" File="$(BaseIntermediateOutputPath)build-sentinel" />
+  </Target>
+
+  <PropertyGroup>
+    <PackDependsOn Condition="'$(NoBuild)' != 'true'">
+      Build;
+      $(PackDependsOn);
+    </PackDependsOn>
+  </PropertyGroup>
+
+  <Target Name="Pack" Condition="'$(IsPackable)' == 'true'" DependsOnTargets="$(PackDependsOn)">
+    <Telemetry EventName="NETCORE_ENGINEERING_TELEMETRY" EventData="Category=Pack" />
+    <Message Text="> gradlew $(GradleOptions) createPackage" Importance="high" />
+    <Exec Command="../gradlew $(GradleOptions) createPackage" />
+    <Message Importance="high" Text="$(PackageId) -> $(PackageOutputPath)%(JavaBuildFiles.Identity)" />
+    <Copy SourceFiles="$(MSBuildProjectDirectory)\build\libs\%(JavaBuildFiles.Identity)" DestinationFolder="$(PackageOutputPath)" />
+  </Target>
+
+  <Target Name="Test" />
+
+  <Target Name="Publish" />
+
+</Project>

src/SignalR/clients/java/signalr/core/signalr.client.java.core.javaproj

@@ -7,8 +7,6 @@
     <!-- In servicing builds, this will be set to value if the Java client is not configured to be released in the currently building patch. -->
     <IsPackable>true</IsPackable>
     <IsTestProject>false</IsTestProject>
-    <!-- Disable gradle daemon on CI since the CI seems to try to wait for the daemon to shut down, which it doesn't do :) -->
-    <GradleOptions Condition="'$(ContinuousIntegrationBuild)' == 'true'">$(GradleOptions) -Dorg.gradle.daemon=false</GradleOptions>
     <PublishDir>$(OutputPath)</PublishDir>
   </PropertyGroup>
 
@@ -21,37 +19,5 @@
     <JavaBuildFiles Include="@(Jars);@(PomFile)"/>
   </ItemGroup>
 
-  <Target Name="Restore" />
-
-  <PropertyGroup>
-    <PackDependsOn Condition=" '$(NoBuild)' != 'true' ">
-      $(PackDependsOn);
-      Build
-    </PackDependsOn>
-  </PropertyGroup>
-
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.targets))\Directory.Build.targets" />
-
-  <PropertyGroup>
-    <GradleOptions>$(GradleOptions) -PpackageVersion="$(PackageVersion)"</GradleOptions>
-  </PropertyGroup>
-
-  <!-- Define Target overrides after importing Directory.Build.targets so these don't get overridden -->
-  <Target Name="Pack" DependsOnTargets="$(PackDependsOn)" Condition="'$(IsPackable)' == 'true'">
-    <Telemetry EventName="NETCORE_ENGINEERING_TELEMETRY" EventData="Category=Pack" />
-    <Message Text="> gradlew $(GradleOptions) createPackage" Importance="high" />
-    <Exec Command="../gradlew $(GradleOptions) createPackage" />
-    <Message Importance="high" Text="java:signalr -> $(PackageOutputPath)%(JavaBuildFiles.Identity)" />
-    <Copy SourceFiles="$(MSBuildThisFileDirectory)build\libs\%(JavaBuildFiles.Identity)" DestinationFolder="$(PackageOutputPath)" />
-  </Target>
-
-  <Target Name="Build">
-    <Telemetry EventName="NETCORE_ENGINEERING_TELEMETRY" EventData="Category=Build" />
-    <Exec Command="../gradlew $(GradleOptions) compileJava" />
-  </Target>
-
-  <Target Name="Test" />
-
-  <Target Name="Publish" />
-
 </Project>

src/SignalR/clients/java/signalr/messagepack/signalr.client.java.messagepack.javaproj

@@ -7,8 +7,6 @@
     <!-- In servicing builds, this will be set to value if the Java client is not configured to be released in the currently building patch. -->
     <IsPackable>true</IsPackable>
     <IsTestProject>false</IsTestProject>
-    <!-- Disable gradle daemon on CI since the CI seems to try to wait for the daemon to shut down, which it doesn't do :) -->
-    <GradleOptions Condition="'$(ContinuousIntegrationBuild)' == 'true'">$(GradleOptions) -Dorg.gradle.daemon=false</GradleOptions>
     <PublishDir>$(OutputPath)</PublishDir>
   </PropertyGroup>
 
@@ -21,37 +19,9 @@
     <JavaBuildFiles Include="@(Jars);@(PomFile)"/>
   </ItemGroup>
 
-  <Target Name="Restore" />
+  <ItemGroup>
-
+    <ProjectReference Include="../core/signalr.client.java.core.javaproj" />
-  <PropertyGroup>
+  </ItemGroup>
-    <PackDependsOn Condition=" '$(NoBuild)' != 'true' ">
-      $(PackDependsOn);
-      Build
-    </PackDependsOn>
-  </PropertyGroup>
 
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.targets))\Directory.Build.targets" />
-
-  <PropertyGroup>
-    <GradleOptions>$(GradleOptions) -PpackageVersion="$(PackageVersion)"</GradleOptions>
-  </PropertyGroup>
-
-  <!-- Define Target overrides after importing Directory.Build.targets so these don't get overridden -->
-  <Target Name="Pack" DependsOnTargets="$(PackDependsOn)" Condition="'$(IsPackable)' == 'true'">
-    <Telemetry EventName="NETCORE_ENGINEERING_TELEMETRY" EventData="Category=Pack" />
-    <Message Text="> gradlew $(GradleOptions) createPackage" Importance="high" />
-    <Exec Command="../gradlew $(GradleOptions) createPackage" />
-    <Message Importance="high" Text="java:signalr-messagepack -> $(PackageOutputPath)%(JavaBuildFiles.Identity)" />
-    <Copy SourceFiles="$(MSBuildThisFileDirectory)build\libs\%(JavaBuildFiles.Identity)" DestinationFolder="$(PackageOutputPath)" />
-  </Target>
-
-  <Target Name="Build">
-    <Telemetry EventName="NETCORE_ENGINEERING_TELEMETRY" EventData="Category=Build" />
-    <Exec Command="../gradlew $(GradleOptions) compileJava" />
-  </Target>
-
-  <Target Name="Test" />
-
-  <Target Name="Publish" />
-
 </Project>

src/SignalR/clients/java/signalr/test/signalr.client.java.Tests.javaproj

@@ -8,12 +8,15 @@
     <SkipHelixArm>true</SkipHelixArm>
     <!-- Skipping on Helix for now -->
     <BuildHelixPayload>false</BuildHelixPayload>
-    <!-- Disable gradle daemon on CI since the CI seems to try to wait for the daemon to shut down, which it doesn't do :) -->
-    <GradleOptions Condition="'$(ContinuousIntegrationBuild)' == 'true'">$(GradleOptions) -Dorg.gradle.daemon=false</GradleOptions>
     <PublishDir>$(OutputPath)</PublishDir>
     <TestDependsOnJava>true</TestDependsOnJava>
   </PropertyGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="../core/signalr.client.java.core.javaproj" />
+    <ProjectReference Include="../messagepack/signalr.client.java.messagepack.javaproj" />
+  </ItemGroup>
+
   <Target Name="Restore" />
 
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.targets))\Directory.Build.targets" />
@@ -21,9 +24,7 @@
   <!-- Define Target overrides after importing Directory.Build.targets so these don't get overridden -->
   <Target Name="Pack" />
 
-  <Target Name="Build" />
+  <Target Name="Test" Condition="'$(SkipTests)' != 'true'" DependsOnTargets="Build">
-
-  <Target Name="Test" Condition="'$(SkipTests)' != 'true'">
     <Telemetry EventName="NETCORE_ENGINEERING_TELEMETRY" EventData="Category=Test" />
     <Message Text="Running Java client tests" Importance="high" />
     <Message Text="> gradlew $(GradleOptions) test" Importance="high" />
@@ -46,8 +47,6 @@
   </Target>
 
   <PropertyGroup>
-    <!-- Pass the Java Package Version down to Gradle -->
-    <GradleOptions>$(GradleOptions) -PpackageVersion="$(PackageVersion)"</GradleOptions>
     <HelixCommand>chmod +x ./gradlew &amp;&amp; ./gradlew $(GradleOptions) test</HelixCommand>
     <HelixCommand Condition="'$(IsWindowsHelixQueue)' == 'true'">call gradlew $(GradleOptions) test</HelixCommand>
   </PropertyGroup>