lang/cs/Org.Apache.REEF.Bridge.Core.Proto/Grpc.targets

<?xml version="1.0" encoding="utf-8"?>
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<!-- GRPC CODE GENERATION TARGETS FOR MSBUILD -->
<Project>
  <ItemGroup>
    <PackageReference Include="RoslynCodeTaskFactory" Version="2.0.7" />
  </ItemGroup>
  <UsingTask TaskName="GrpcToCSharp" TaskFactory="CodeTaskFactory" AssemblyFile="$(RoslynCodeTaskFactory)" Condition=" '$(RoslynCodeTaskFactory)' != '' ">
    <ParameterGroup>
      <!-- The directory where the project is located. This is typically $(ProjectDir) -->
      <OutputDirectory ParameterType="System.String" Required="true" />
      <!-- This is the list of C# target files to be generaterd. This is typically @(Compile) -->
      <SourceFileList ParameterType="System.String" Required="true" />
      <!-- The directory where the .avsc schema files are located. -->
      <GrpcSchemaDirectory ParameterType="System.String" Required="true" />
      <!-- The where gRPC schema generator and dependent libraries are located. -->
      <GrpcBinaryDirectory ParameterType="System.String" Required="true" />
      <!-- gRPC tools extension e.g., .exe for windows. -->
      <GrpcToolsExtension ParameterType="System.String" Required="false" />
    </ParameterGroup>
    <Task>
      <Using Namespace="System" />
      <Using Namespace="System.IO" />
      <Using Namespace="System.Diagnostics" />
      <Using Namespace="System.Threading" />
      <Using Namespace="System.Threading.Tasks" />
      <Code Type="Fragment" Language="C#">
        <![CDATA[
          // Create a temporary working directory for the log file.
          string tempDir = Path.GetFullPath(Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString()));
          Directory.CreateDirectory(tempDir);

          var grpcCSharpPlugin = "grpc_csharp_plugin";
          var protocExe = "protoc";
          if (GrpcToolsExtension != null)
          {
            grpcCSharpPlugin += GrpcToolsExtension;
            protocExe += GrpcToolsExtension;
          }
          // Get the full path to the directory where the gRPC .proto files are located.
          string grpcSrcFileDirectory = Path.GetFullPath(GrpcSchemaDirectory);
          string grpcToolsDirectory = Path.GetFullPath(GrpcBinaryDirectory);
          string grpcOutputDirectory = Path.GetFullPath(OutputDirectory);
          string grpcPluginName = Path.Combine(GrpcBinaryDirectory, grpcCSharpPlugin);

          Directory.CreateDirectory(grpcOutputDirectory);
           
          // Get the list of names of .proto files
          string[] sourceFiles = SourceFileList.Split(';');

          // Setup the conversion process.
          ProcessStartInfo rProcInfo = new ProcessStartInfo()
          {
              RedirectStandardOutput = true,
              RedirectStandardError = true,
              UseShellExecute = false,
              CreateNoWindow = true,
              FileName = Path.Combine(grpcToolsDirectory, protocExe)
          };

          bool conversionError = false;
          using (StreamWriter logWriter = new StreamWriter(Path.Combine(tempDir, "GrpcCodeGeneration.log")))
          {
              foreach (string file in sourceFiles)
              {
                  logWriter.WriteLine("Processing file: {0}", file);
                  Console.WriteLine("Processing file: {0}", file);
				  string fullFileName = Path.Combine(grpcSrcFileDirectory, file);
                  if (File.Exists(fullFileName))
                  {
                    rProcInfo.Arguments = " -I" + grpcSrcFileDirectory + " --csharp_out " + grpcOutputDirectory
                        + " " + fullFileName + " --grpc_out " + grpcOutputDirectory
                        + " --plugin=protoc-gen-grpc=" + grpcPluginName;
                    logWriter.WriteLine("Command: {0}", rProcInfo.Arguments);
                    StringBuilder stdOutBuilder = new StringBuilder();
                    StringBuilder stdErrBuilder = new StringBuilder();
                    using (Process rProc = Process.Start(rProcInfo))
                    {
                      var stdOutTask = System.Threading.Tasks.Task.Run(
                        () => stdOutBuilder.Append(rProc.StandardOutput.ReadToEnd()));
                      var stdErrTask = System.Threading.Tasks.Task.Run(
                        () => stdErrBuilder.Append(rProc.StandardError.ReadToEnd()));
                      rProc.WaitForExit();
                      conversionError = rProc.ExitCode != 0;
                      // Wait for std out and error readers.
                      stdOutTask.Wait();
                      stdErrTask.Wait();
                    }
                    logWriter.WriteLine("[StdOut]:");
                    logWriter.WriteLine(stdOutBuilder.ToString());
                    logWriter.WriteLine("[StdErr]:");
                    logWriter.WriteLine(stdErrBuilder.ToString());
                  }
              }
          }
          if (!conversionError)
          {
            Directory.Delete(tempDir, recursive : true);
          }
      ]]>
      </Code>
    </Task>
  </UsingTask>
</Project>