kafka-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Su She <suhsheka...@gmail.com>
Subject How to run Kafka Producer in Java environment? How to set mainClass in pom file in EC2 instance?
Date Tue, 20 Jan 2015 19:43:23 GMT
Hello Everyone,

Sorry for the duplicate post, I hadn't subscribed to the list yet, so I
couldn't reply to suggestions. That has been fixed now.

1) Using Maven, I wrote a Kafka Producer similar to the one found here:
https://github.com/pppsunil/HelloKafka/blob/master/src/main/java/com/spnotes/kafka/HelloKafkaProducer.java

2) This is my pom file:

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="
http://maven.apache.org/POM/4.0.0" xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="
http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion> <groupId>HelloKafka</groupId>
<artifactId>HelloKafka</artifactId> <version>1.0-SNAPSHOT</version>
<build>
<plugins> <plugin> <groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId> <version>2.2</version> <!--
nothing here --> </plugin> <plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2-beta-4</version> <configuration> <descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef> </descriptorRefs>
<archive> <manifest> <mainClass>HelloKafkaProducer</mainClass> </manifest>
</archive> </configuration> <executions> <execution> <phase>package</phase>
<goals> <goal>single</goal> </goals> </execution> </executions>
</plugin>
</plugins> </build> <dependencies> <dependency>
<groupId>org.apache.kafka</groupId> <artifactId>kafka_2.10</artifactId>
<version>0.8.2-beta</version> <scope>compile</scope> <exclusions>
<exclusion> <artifactId>jmxri</artifactId> <groupId>com.sun.jmx</groupId>
</exclusion> <exclusion> <artifactId>jms</artifactId>
<groupId>javax.jms</groupId> </exclusion> <exclusion>
<artifactId>jmxtools</artifactId> <groupId>com.sun.jdmk</groupId>
</exclusion> </exclusions> </dependency> <dependency>
<groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId>
<version>1.5.6</version> </dependency> <dependency>
<groupId>org.scala-lang</groupId> <artifactId>scala-library</artifactId>
<version>2.10.4</version> </dependency> <dependency>
<groupId>org.scala-lang</groupId> <artifactId>scala-compiler</artifactId>
<version>2.10.4</version> </dependency> <dependency>
<groupId>org.apache.kafka</groupId> <artifactId>kafka_2.10</artifactId>
<version>0.8.2-beta</version> </dependency> <dependency>
<groupId>com.101tec</groupId> <artifactId>zkclient</artifactId>
<version>0.3</version> </dependency> <dependency>
<groupId>com.yammer.metrics</groupId> <artifactId>metrics-core</artifactId>
<version>2.2.0</version> </dependency> <dependency>
<groupId>org.apache.kafka</groupId> <artifactId>kafka-clients</artifactId>
<version>0.8.2-beta</version> </dependency> <dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId> <version>2.4</version>
</dependency> </dependencies> </project>

3) I am really lost on how to run kafka producer from the command line. I
have followed the instructions here as seen in my above pom:
http://stackoverflow.com/questions/1814526/problem-building-executable-jar-with-maven

4) So I have my HKP.java file, then the pom file I have shown above and
then I do mvn clean install. It builds the target directory with two jar
files...what is my next step? I try java -cp jar.with.dependencies.jar -jar
main.jar, but it says no main manifest attribute. I try java -cp
jar.with.dependencies HKP, but it says it can't find class HKP

I have a feeling I am not writing the mainClass properly as most online
examples say com.example.class, but I'm not sure how that translates to
working on EC2.

Thanks a lot for the help!

-Su

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message