moehajj edited a comment on issue #2205:
URL: https://github.com/apache/camel-k/issues/2205#issuecomment-817895840
Hi Team, I'm working alongside @viacheslav-fomin-main. I would like to
provide some context for this issue to help you reproduce if needed.
## The Proto File
Our `.proto` file looks something like this (we package it in
`com.example:example-proto:1.0.0-SNAPSHOT`):
```
syntax = "proto3";
package com.example;
option java_package = "com.example";
option java_multiple_files = true;
message ExampleRequest {
string request_message = 1;
int32 request_id = 2;
}
message ExampleResponse {
string response_message = 1;
int32 response_id = 2;
}
service ExampleService {
rpc Run(ExampleRequest) returns (ExampleResponse);
}
}
```
## The Java Route
Our `SampleGrpcCamelRoute.java` route looks like this:
```
package com.example.service.grpc;
import com.google.protobuf.ByteString;
import com.example.ExampleRequest;
import com.example.ExampleResponse;
import org.apache.camel.Message;
import org.apache.camel.builder.RouteBuilder;
import java.nio.charset.StandardCharsets;
public class SampleGrpcCamelRoute extends RouteBuilder {
@Override
public void configure() throws Exception {
fromF("grpc://localhost:9000/com.example.ExampleService?synchronous=true")
.process(exchange -> {
final Message message = exchange.getMessage();
final ExampleRequest request =
message.getBody(ExampleRequest.class);
final String output = "Hello World!";
final ExampleResponse response =
ExampleResponse.newBuilder()
.setMessage(output)
.build();
message.setBody(response);
});
}
}
```
We have verified this route works locally using java unit tests and Apache
Camel ContextTestSupport `org.apache.camel.ContextTestSupport`.
## Running using `kamel` CLI
We run the integration using the following command:
```
kamel run --dev \
-d mvn:com.example:example-proto:1.0.0-SNAPSHOT \
-d mvn:org.apache.camel:camel-grpc:3.9.0 \
-d mvn:org.apache.camel:camel-componentdsl:3.9.0 \
SampleGrpcCamelRoute.java
```
Using `kubectl port-forward` on the integration pod we are able to verify
the grpc route is working using the same tests we had run locally.
We tried a plethora of camel-k `trait`s including:
```
--trait container.service-port=9000 \
--trait container.expose=true \
--trait knative.enabled=true \
--trait knative-service.enabled=true \
--trait
knative-service.autoscaling-class=kpa.autoscaling.knative.dev \
--trait knative-service.min-scale=1 \
--trait knative-service.max-scale=1 \
```
Thank you for the support!
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