[jira] [Created] (CAMEL-15841) logging empties message body?

[Vyacheslav Boyko (Jira)]

Vyacheslav Boyko created CAMEL-15841:
----------------------------------------

             Summary: logging empties message body?
                 Key: CAMEL-15841
                 URL: https://issues.apache.org/jira/browse/CAMEL-15841
             Project: Camel
          Issue Type: Bug
          Components: camel-core
    Affects Versions: 3.5.0
         Environment: my project is attached
            Reporter: Vyacheslav Boyko
         Attachments: egais-connector.7z

my build.gradle is
{code}
plugins {
        id 'org.springframework.boot' version '2.3.5.RELEASE'
        id 'io.spring.dependency-management' version '1.0.10.RELEASE'
        id 'java'
}

group = 'com.bvn13'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '11'

configurations {
        compileOnly {
                extendsFrom annotationProcessor
        }
}

repositories {
        mavenCentral()
}

dependencies {
        //implementation 
'org.springframework.boot:spring-boot-starter-thymeleaf'
        //implementation 'org.springframework.boot:spring-boot-starter-web'
        implementation 
'org.apache.camel.springboot:camel-spring-boot-starter:3.5.0'
        implementation 'org.apache.camel:camel-http:3.5.0'
        implementation 'org.apache.camel:camel-jetty:3.5.0'
        implementation 'org.apache.camel:camel-gson:3.5.0'
        
        compileOnly 'org.projectlombok:lombok'
        annotationProcessor 'org.projectlombok:lombok'
        testImplementation('org.springframework.boot:spring-boot-starter-test') 
{
                exclude group: 'org.junit.vintage', module: 
'junit-vintage-engine'
        }
}

test {
        useJUnitPlatform()
}
{code}

my route builder is:
{code:java}
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.model.dataformat.JsonLibrary;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import lombok.extern.slf4j.Slf4j;

@Slf4j
@Component
public class EgaisExpirationDateSearcher extends RouteBuilder {

    private final String host;
    private final int port;
    
    private final String searchEndpoint;

    public EgaisExpirationDateSearcher(
            @Value("${app.listen.host}") String host,
            @Value("${app.listen.port}") int port) {
        this.host = host;
        this.port = port;
        searchEndpoint = "jetty:http://"+host+":"+port+"/expire";;
        
        log.info("Listening at: {}", searchEndpoint);
    }

    @Override
    public void configure() throws Exception {
        
        from(searchEndpoint+"?httpMethodRestrict=POST")
            .log("${body}")  // <-----------------
            .unmarshal().json(JsonLibrary.Gson, SearchRequest.class)
            .log("${body}")
            .process((exchange) -> {
                exchange.getMessage().setBody("HI!");
            })
            ;
        
        
    }

}

{code}

my application properties are:
{code}
app:
  listen:
    host: localhost
    port: 9091
{code}

I have an object as request body:
{code:java}
import lombok.Value;

@Value
public class SearchRequest {
    String contraInn;
    String alcoGoodName;
}
{code}

I perform POST HTTP request like
{code:bash}
curl -X POST -H "Content-Type: application/json" -d 
'{"contraInn":123,"alcoGoodName":"name"}' http://localhost:9091/expire
{code}

now take a look at pointed line in route builder: 
{code:java}
.log("${body}")  // <-----------------
{code}

if I comment this line (disable logging) the log has following lines:
{code}
2020-11-10 22:07:52.172  INFO 1344 --- [           main] 
c.b.b.e.EgaisConnectorApplication        : Started EgaisConnectorApplication in 
2.003 seconds (JVM running for 2.982)
2020-11-10 22:11:05.575  INFO 1344 --- [tp1753113235-31] route2                 
                  : com.bvn13.beerspot.egaisconnector.SearchRequest@2d34001a
{code}

but when I uncomment pointed line the body seems become empty right after 
logging:
{code}
2020-11-10 22:12:40.284  INFO 10924 --- [           main] 
c.b.b.e.EgaisConnectorApplication        : Started EgaisConnectorApplication in 
1.932 seconds (JVM running for 2.78)
2020-11-10 22:12:46.854  INFO 10924 --- [qtp216919586-31] route2                
                   : {"contraInn":123,"alcoGoodName":"name"}
2020-11-10 22:12:46.857  INFO 10924 --- [qtp216919586-31] route2                
                   : null
{code}

First log message is logged as arrived, then emptied (?), unmarshalled to null 
and logged out as null.

Is it normal?



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