gRPC and Java Proto3

[Nicolas Vacelet]

Hi all;

it is very painfully i write this message.
Since several days, I try to use gRPC and protobuffer3 (or 2)

the idea is simple:

I have messages (Person with name and birthday year)  and service (getAge()) , from a simple client to the server, in JAVA.
I need to use gRPC.

After several days of search, i still don't understand how it's work.

I use 3.0.0 (protoc and librarries), I tried with 2.4.1, 2.5, 2.6.2 ...
Nothing is working, I got some understandable Runtimexception.. some sample on Internet use strange libraries, incompatible with my generates code.

I need help to have a really simple Maven sample, with good versoin of libraries.
can anyone help me ?


Thanks

[Nicolas Vacelet]

I solved my problem using this maven plugin:

<plugin>
 <groupId>org.xolstice.maven.plugins</groupId>
 <artifactId>protobuf-maven-plugin</artifactId>
 <version>0.5.0</version>
 <configuration>
 <!--
 The version of protoc must match protobuf-java. If you don't depend on
 protobuf-java directly, you will be transitively depending on the
 protobuf-java version that grpc depends on.
 -->
 <protocArtifact>com.google.protobuf:protoc:3.0.0-beta-2:exe:windows-x86_32</protocArtifact>
 <pluginId>grpc-java</pluginId>
 <pluginArtifact>io.grpc:protoc-gen-grpc-java:0.14.0:exe:windows-x86_32</pluginArtifact>
 <outputDirectory>./src/main/java</outputDirectory>
 <protoSourceRoot>./src/main/resources</protoSourceRoot>
 <clearOutputDirectory>false</clearOutputDirectory>
 </configuration>
 <executions>
 <execution>
 <goals>
 <goal>compile</goal>
 <goal>compile-custom</goal>
 </goals>
 </execution>
 </executions>
</plugin>