sai*_*irn 6 java apache-camel reactive-programming activemq-artemis smallrye
下面是我尝试使用 Apache Camel 反应流解决方案将发布者连接到订阅者（骆驼路由的代码如下所示）跨 JVM 的
为了使通信能够跨越 JVM，似乎需要一个“代理”服务器。因此，我已经实现了 Artemis 代理并相应地修改了 application.properties 文件（根据我对如何这样做的最佳理解）。
此外，为了缩小焦点，选择使用 smallrye-ampq 连接器。
问题：
订阅者应该接收并记录字符串值（来自正文）：
-
-
-
:blahblahblah
:blahblahblah
:blahblahblah
-
-
-
--相反，它正在记录值，如下所示：
-
-
-
:Exchange[ID-LAPTOP-4LR4PMVQ-1576639597494-0-289]
:Exchange[ID-LAPTOP-4LR4PMVQ-1576639597494-0-292]
:Exchange[ID-LAPTOP-4LR4PMVQ-1576639597494-0-295]
-
-
-
题：
为什么发布者发送的有效负载没有到达订阅者，我可以修改哪些代码/配置来修复它？
提前感谢您的帮助！
“出版商”路线
package aaa.bbb.ccc.jar;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;
import org.eclipse.microprofile.reactive.messaging.Outgoing;
import org.reactivestreams.Publisher;
import org.apache.camel.CamelContext;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.reactive.streams.api.CamelReactiveStreamsService;
import org.apache.camel.component.reactive.streams.api.CamelReactiveStreams;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
@ApplicationScoped
public class CamelPub extends RouteBuilder {
@Inject
CamelContext ctx;
CamelReactiveStreamsService crss;
static int x = 0;
@Outgoing("data")
public Publisher<Exchange> source() {
return crss.from("seda:thesource");
}
@Override
public void configure() {
crss = CamelReactiveStreams.get(ctx);
from("timer://thetimer?period=1000")
.process(new Processor() {
@Override
public void process(Exchange msg) throws Exception {
msg.getIn().setBody("blahblahblah"); //(Integer.toString(x++));
}
})
.log("....... PUB ....... camelpub - body: ${body}")
.to("direct:thesource");
}
}
microprofile-config.properties - 发布者
injected.value=Injected value
value=lookup value
# Microprofile server properties
server.port=8084
server.host=0.0.0.0
mp.messaging.outgoing.data.connector=smallrye-amqp
mp.messaging.outgoing.data.host=localhost
mp.messaging.outgoing.data.port=5672
mp.messaging.outgoing.data.username=artuser
mp.messaging.outgoing.data.password=artpassword
mp.messaging.outgoing.data.endpoint-uri:seda:thesource
mp.messaging.outgoing.data.broadcast=true
mp.messaging.outgoing.data.durable=true
相关控制台日志摘录（？） - 发布者
...
--- exec-maven-plugin:1.5.0:exec (default-cli) @ camelpub ---
2019.12.17 22:26:34 INFO io.helidon.microprofile.server.Main Thread[main,5,main]: Logging configured using classpath: /logging.properties
2019.12.17 22:26:35 INFO org.jboss.weld.Version Thread[main,5,main]: WELD-000900: 3.1.1 (Final)
2019.12.17 22:26:35 INFO org.jboss.weld.Bootstrap Thread[main,5,main]: WELD-ENV-000020: Using jandex for bean discovery
2019.12.17 22:26:35 WARN org.jboss.weld.Bootstrap Thread[main,5,main]: WELD-001208: Error when validating null@6 against xsd. cvc-complex-type.4: Attribute 'bean-discovery-mode' must appear on element 'beans'.
2019.12.17 22:26:35 INFO org.jboss.weld.Bootstrap Thread[main,5,main]: WELD-000101: Transactional services not available. Injection of @Inject UserTransaction not available. Transactional observers will be invoked synchronously.
2019.12.17 22:26:36 INFO org.jboss.weld.Event Thread[main,5,main]: WELD-000411: Observer method [BackedAnnotatedMethod] public org.glassfish.jersey.ext.cdi1x.internal.ProcessAllAnnotatedTypes.processAnnotatedType(@Observes ProcessAnnotatedType<?>, BeanManager) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
2019.12.17 22:26:36 INFO org.jboss.weld.Event Thread[main,5,main]: WELD-000411: Observer method [BackedAnnotatedMethod] private io.helidon.microprofile.openapi.IndexBuilder.processAnnotatedType(@Observes ProcessAnnotatedType<X>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
2019.12.17 22:26:36 INFO org.jboss.weld.Event Thread[main,5,main]: WELD-000411: Observer method [BackedAnnotatedMethod] private org.apache.camel.cdi.CdiCamelExtension.processAnnotatedType(@Observes ProcessAnnotatedType<?>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
2019.12.17 22:26:36 WARN org.jboss.weld.Bootstrap Thread[main,5,main]: WELD-001101: Member of array type or annotation type must be annotated @NonBinding: [EnhancedAnnotatedMethodImpl] public abstract javax.enterprise.inject.Typed.value()
2019.12.17 22:26:36 INFO org.apache.camel.cdi.CdiCamelExtension Thread[main,5,main]: Camel CDI is starting Camel context [camel-1]
2019.12.17 22:26:36 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: Apache Camel 3.0.0 (CamelContext: camel-1) is starting
2019.12.17 22:26:36 INFO org.apache.camel.impl.engine.DefaultManagementStrategy Thread[main,5,main]: JMX is disabled
2019.12.17 22:26:37 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: StreamCaching is not in use. If using streams then its recommended to enable stream caching. See more details at http://camel.apache.org/stream-caching.html
2019.12.17 22:26:37 INFO org.apache.camel.component.seda.SedaEndpoint Thread[main,5,main]: Endpoint seda://thesource is using shared queue: seda://thesource with size: 1000
2019.12.17 22:26:37 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: Route: route1 started and consuming from: timer://thetimer?period=1000
2019.12.17 22:26:37 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: Total 1 routes, of which 1 are started
2019.12.17 22:26:37 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: Apache Camel 3.0.0 (CamelContext: camel-1) started in 0.191 seconds
2019.12.17 22:26:37 INFO io.smallrye.reactive.messaging.extension.ReactiveMessagingExtension Thread[main,5,main]: Analyzing mediator bean: Managed Bean [class aaa.bbb.ccc.jar.CamelPub] with qualifiers [@Any @Default]
2019.12.17 22:26:37 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Scanning Type: class aaa.bbb.ccc.jar.CamelPub
2019.12.17 22:26:37 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Deployment done... start processing
2019.12.17 22:26:37 INFO io.smallrye.reactive.messaging.impl.ConfiguredChannelFactory Thread[main,5,main]: Found incoming connectors: []
2019.12.17 22:26:37 INFO io.smallrye.reactive.messaging.impl.ConfiguredChannelFactory Thread[main,5,main]: Found outgoing connectors: []
2019.12.17 22:26:37 INFO io.smallrye.reactive.messaging.impl.ConfiguredChannelFactory Thread[main,5,main]: Stream manager initializing...
2019.12.17 22:26:37 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Initializing mediators
2019.12.17 22:26:37 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: Route: route2 started and consuming from: seda://thesource
2019.12.17 22:26:37 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Connecting mediators
2019.12.17 22:26:37 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Connecting method aaa.bbb.ccc.jar.CamelPub#source to sink data
2019.12.17 22:26:37 INFO org.jboss.weld.Bootstrap Thread[main,5,main]: WELD-ENV-002003: Weld SE container e71e38c0-91ec-4758-a310-55f1368c6a9c initialized
2019.12.17 22:26:37 WARNING io.helidon.microprofile.server.Server$Builder Thread[main,5,main]: Failed to find JAX-RS resource to use
2019.12.17 22:26:37 INFO io.helidon.microprofile.security.SecurityMpService Thread[main,5,main]: Security extension for microprofile is enabled, yet security configuration is missing from config (requires providers configuration at key security.providers). Security will not have any valid provider.
2019.12.17 22:26:37 INFO io.smallrye.openapi.api.OpenApiDocument Thread[main,5,main]: OpenAPI document initialized: io.smallrye.openapi.api.models.OpenAPIImpl@57fbc06f
2019.12.17 22:26:38 INFO route1 Thread[Camel (camel-1) thread #1 - timer://thetimer,5,main]: ....... PUB ....... camelpub - body: 0
2019.12.17 22:26:38 INFO io.helidon.webserver.NettyWebServer Thread[main,5,main]: Version: 1.4.0
2019.12.17 22:26:38 INFO io.helidon.webserver.NettyWebServer Thread[nioEventLoopGroup-2-1,10,main]: Channel '@default' started: [id: 0x52928b67, L:/0:0:0:0:0:0:0:0:8084]
2019.12.17 22:26:38 INFO io.helidon.microprofile.server.ServerImpl Thread[nioEventLoopGroup-2-1,10,main]: Server initialized on http://localhost:8084 (and all other host addresses) in 3668 milliseconds.
2019.12.17 22:26:39 INFO route1 Thread[Camel (camel-1) thread #1 - timer://thetimer,5,main]: ....... PUB ....... camelpub - body: 1
2019.12.17 22:26:40 INFO route1 Thread[Camel (camel-1) thread #1 - timer://thetimer,5,main]: ....... PUB ....... camelpub - body: 2
2019.12.17 22:26:41 INFO route1 Thread[Camel (camel-1) thread #1 - timer://thetimer,5,main]: ....... PUB ....... camelpub - body: 3
2019.12.17 22:26:42 INFO route1 Thread[Camel (camel-1) thread #1 - timer://thetimer,5,main]: ....... PUB ....... camelpub - body: 4
...
“订阅者”路线
package aaa.bbb.ccc.jar;
import javax.inject.Inject;
import org.apache.camel.CamelContext;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.reactive.streams.api.CamelReactiveStreamsService;
import javax.enterprise.context.ApplicationScoped;
import org.apache.camel.component.reactive.streams.api.CamelReactiveStreams;
import org.eclipse.microprofile.reactive.messaging.Incoming;
import org.reactivestreams.Subscriber;
@ApplicationScoped
public class CamelSub extends RouteBuilder {
public CamelSub() throws Exception {
}
@Inject
CamelContext ctx;
CamelReactiveStreamsService crss;
@Incoming("data")
public Subscriber<String> sink() {
return crss.subscriber("seda:thesink", String.class);
}
@Override
public void configure() {
crss = CamelReactiveStreams.get(ctx);
from("seda:thesink")
.convertBodyTo(String.class)
.log("ooooooo SUB ooooooo camelsub - body: ${body}");
}
}
microprofile-config.properties - 订阅者
injected.value=Injected value
value=lookup value
# Microprofile server properties
server.port=8082
server.host=0.0.0.0
mp.messaging.incoming.data.connector=smallrye-amqp
mp.messaging.incoming.data.host=localhost
mp.messaging.incoming.data.port=5672
mp.messaging.incoming.data.username=artuser
mp.messaging.incoming.data.password=artpassword
mp.messaging.incoming.data.endpoint-uri:seda:thesink
mp.messaging.incoming.data.broadcast=true
mp.messaging.incoming.data.durable=true
相关控制台日志摘录（？） - 订阅者
...
--- exec-maven-plugin:1.5.0:exec (default-cli) @ camelsub ---
2019.12.17 22:28:09 INFO io.helidon.microprofile.server.Main Thread[main,5,main]: Logging configured using classpath: /logging.properties
2019.12.17 22:28:10 INFO org.jboss.weld.Version Thread[main,5,main]: WELD-000900: 3.1.1 (Final)
2019.12.17 22:28:10 INFO org.jboss.weld.Bootstrap Thread[main,5,main]: WELD-ENV-000020: Using jandex for bean discovery
2019.12.17 22:28:10 WARN org.jboss.weld.Bootstrap Thread[main,5,main]: WELD-001208: Error when validating null@6 against xsd. cvc-complex-type.4: Attribute 'bean-discovery-mode' must appear on element 'beans'.
2019.12.17 22:28:10 INFO org.jboss.weld.Bootstrap Thread[main,5,main]: WELD-000101: Transactional services not available. Injection of @Inject UserTransaction not available. Transactional observers will be invoked synchronously.
2019.12.17 22:28:10 INFO org.jboss.weld.Event Thread[main,5,main]: WELD-000411: Observer method [BackedAnnotatedMethod] public org.glassfish.jersey.ext.cdi1x.internal.ProcessAllAnnotatedTypes.processAnnotatedType(@Observes ProcessAnnotatedType<?>, BeanManager) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
2019.12.17 22:28:10 INFO org.jboss.weld.Event Thread[main,5,main]: WELD-000411: Observer method [BackedAnnotatedMethod] private io.helidon.microprofile.openapi.IndexBuilder.processAnnotatedType(@Observes ProcessAnnotatedType<X>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
2019.12.17 22:28:10 INFO org.jboss.weld.Event Thread[main,5,main]: WELD-000411: Observer method [BackedAnnotatedMethod] private org.apache.camel.cdi.CdiCamelExtension.processAnnotatedType(@Observes ProcessAnnotatedType<?>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
2019.12.17 22:28:10 WARN org.jboss.weld.Bootstrap Thread[main,5,main]: WELD-001101: Member of array type or annotation type must be annotated @NonBinding: [EnhancedAnnotatedMethodImpl] public abstract javax.enterprise.inject.Typed.value()
2019.12.17 22:28:11 INFO org.apache.camel.cdi.CdiCamelExtension Thread[main,5,main]: Camel CDI is starting Camel context [camel-1]
2019.12.17 22:28:11 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: Apache Camel 3.0.0 (CamelContext: camel-1) is starting
2019.12.17 22:28:11 INFO org.apache.camel.impl.engine.DefaultManagementStrategy Thread[main,5,main]: JMX is disabled
2019.12.17 22:28:11 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: StreamCaching is not in use. If using streams then its recommended to enable stream caching. See more details at http://camel.apache.org/stream-caching.html
2019.12.17 22:28:11 INFO org.apache.camel.component.seda.SedaEndpoint Thread[main,5,main]: Endpoint seda://thesink is using shared queue: seda://thesink with size: 1000
2019.12.17 22:28:11 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: Route: route1 started and consuming from: seda://thesink
2019.12.17 22:28:11 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: Total 1 routes, of which 1 are started
2019.12.17 22:28:11 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: Apache Camel 3.0.0 (CamelContext: camel-1) started in 0.173 seconds
2019.12.17 22:28:11 INFO io.smallrye.reactive.messaging.extension.ReactiveMessagingExtension Thread[main,5,main]: Analyzing mediator bean: Managed Bean [class aaa.bbb.ccc.jar.CamelSub] with qualifiers [@Any @Default]
2019.12.17 22:28:11 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Scanning Type: class aaa.bbb.ccc.jar.CamelSub
2019.12.17 22:28:11 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Deployment done... start processing
2019.12.17 22:28:11 INFO io.smallrye.reactive.messaging.impl.ConfiguredChannelFactory Thread[main,5,main]: Found incoming connectors: []
2019.12.17 22:28:11 INFO io.smallrye.reactive.messaging.impl.ConfiguredChannelFactory Thread[main,5,main]: Found outgoing connectors: []
2019.12.17 22:28:11 INFO io.smallrye.reactive.messaging.impl.ConfiguredChannelFactory Thread[main,5,main]: Stream manager initializing...
2019.12.17 22:28:12 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Initializing mediators
2019.12.17 22:28:12 INFO org.apache.camel.impl.DefaultCamelContext Thread[main,5,main]: Route: route2 started and consuming from: reactive-streams://ID-LAPTOP-4LR4PMVQ-1576639692145-0-1
2019.12.17 22:28:12 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Connecting mediators
2019.12.17 22:28:12 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Attempt to resolve aaa.bbb.ccc.jar.CamelSub#sink
2019.12.17 22:28:12 INFO io.smallrye.reactive.messaging.extension.MediatorManager Thread[main,5,main]: Connecting aaa.bbb.ccc.jar.CamelSub#sink to `data` (org.eclipse.microprofile.reactive.streams.operators.core.PublisherBuilderImpl@3eda0aeb)
2019.12.17 22:28:12 INFO org.jboss.weld.Bootstrap Thread[main,5,main]: WELD-ENV-002003: Weld SE container c1eaa1fb-486c-4b95-b56b-0f1a7b88f741 initialized
2019.12.17 22:28:12 WARNING io.helidon.microprofile.server.Server$Builder Thread[main,5,main]: Failed to find JAX-RS resource to use
2019.12.17 22:28:12 INFO io.helidon.microprofile.security.SecurityMpService Thread[main,5,main]: Security extension for microprofile is enabled, yet security configuration is missing from config (requires providers configuration at key security.providers). Security will not have any valid provider.
2019.12.17 22:28:12 INFO io.smallrye.openapi.api.OpenApiDocument Thread[main,5,main]: OpenAPI document initialized: io.smallrye.openapi.api.models.OpenAPIImpl@77f905e3
2019.12.17 22:28:12 INFO io.helidon.webserver.NettyWebServer Thread[main,5,main]: Version: 1.4.0
2019.12.17 22:28:12 INFO io.helidon.webserver.NettyWebServer Thread[nioEventLoopGroup-2-1,10,main]: Channel '@default' started: [id: 0xd8f72801, L:/0:0:0:0:0:0:0:0:8082]
2019.12.17 22:28:12 INFO io.helidon.microprofile.server.ServerImpl Thread[nioEventLoopGroup-2-1,10,main]: Server initialized on http://localhost:8082 (and all other host addresses) in 3310 milliseconds.
2019.12.17 22:28:13 INFO route1 Thread[Camel (camel-1) thread #1 - seda://thesink,5,main]: ooooooo SUB ooooooo camelsub - body: Exchange[ID-LAPTOP-4LR4PMVQ-1576639597494-0-289]
2019.12.17 22:28:14 INFO route1 Thread[Camel (camel-1) thread #1 - seda://thesink,5,main]: ooooooo SUB ooooooo camelsub - body: Exchange[ID-LAPTOP-4LR4PMVQ-1576639597494-0-292]
2019.12.17 22:28:15 INFO route1 Thread[Camel (camel-1) thread #1 - seda://thesink,5,main]: ooooooo SUB ooooooo camelsub - body: Exchange[ID-LAPTOP-4LR4PMVQ-1576639597494-0-295]
...
注意：上面的输出应该显示数字......而不是例如“Exchange[ID-LAPTOP-4LR4PMVQ-1576639597494-0-289]”等...... :-(
每个基本相同的 maven pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>aaa.bbb.ccc</groupId>
<artifactId>[NOTE: essentially same pom.xml for both camelpub or camelsub]</artifactId>
<version>1.0</version>
<properties>
<helidonVersion>1.4.0</helidonVersion>
<package>aaa.bbb.ccc.jar</package>
<failOnMissingWebXml>false</failOnMissingWebXml>
<mpVersion>3.2</mpVersion>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<libs.classpath.prefix>libs</libs.classpath.prefix>
<mainClass>io.helidon.microprofile.server.Main</mainClass>
<jersey.version>2.29</jersey.version>
<copied.libs.dir>${project.build.directory}/${libs.classpath.prefix}</copied.libs.dir>
<camelversion>3.0.0</camelversion>
</properties>
<dependencies>
<dependency>
<groupId>org.eclipse.microprofile</groupId>
<artifactId>microprofile</artifactId>
<version>${mpVersion}</version>
<type>pom</type>
<
所以，事实证明，改变方法签名......
@Outgoing("data")
public Publisher<Exchange> source() {
...
}
到...
@Outgoing("data")
public Publisher<String> source() {
...
}
修复了该问题，以便订阅者现在接收并记录发布者发送的值/有效负载
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