Generating classes for protobuf file

pants.toml

@@ -14,6 +14,7 @@ backend_packages = [
   "pants.backend.experimental.java.lint.google_java_format",
   "pants.backend.experimental.scala",
   "pants.backend.experimental.scala.lint.scalafmt",
+  "pants.backend.experimental.codegen.protobuf.java",
 ]
 
 [source]

src/jvm/org/pantsbuild/example/lib/ExampleLib.java

@@ -4,12 +4,21 @@
 import com.google.common.base.Joiner;
 import com.google.common.io.Resources;
 import java.io.IOException;
+import javax.annotation.Nonnull;
+import org.pantsbuild.example.SubmitPynestJobRequest;
 
 public class ExampleLib {
   public static String hello() throws IOException {
+    SubmitPynestJobRequest request = new SubmitPynestJobRequest();
+    ExampleLib.printScope(request);
+
     String world =
         Resources.toString(Resources.getResource(ExampleLib.class, "world.txt"), Charsets.UTF_8)
             .strip();
     return Joiner.on(" ").join("Hello", world);
   }
+
+  private static void printScope(@Nonnull final SubmitPynestJobRequest request) {
+    System.out.println(request.getConfigScope());
+  }
 }

src/jvm/org/pantsbuild/example/proto/BUILD

@@ -0,0 +1 @@
+protobuf_sources(grpc=True)

src/jvm/org/pantsbuild/example/proto/example.proto

@@ -0,0 +1,32 @@
+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "org.pantsbuild.example";
+option java_outer_classname = "DatabricksAPIProto";
+
+package org.pantsbuild.example;
+
+
+message SubmitPynestJobRequest {
+  // To deduplicate retried job submits. This will be a UUID token generated by the requester
+  string idempotency_token = 1;
+
+  // The git SHA commit id of the job you want to run
+  string git_sha = 2;
+
+  // The preregisterd job name to run
+  string job_name = 3;
+
+  // The service role to run the job with: e.g. etl, secure_etl, etc.
+  // If the caller does not have access to the role the request will be rejected
+  string requested_role = 4;
+
+  // A list of arguments to pass to the job
+  repeated string task_args = 5;
+
+  // Config service scope
+  string config_scope = 6;
+
+  // The jar version for a data/jms-package-manager project that you want to run
+  string jmspm_jar_version = 100;
+}