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From Debraj Manna <subharaj.ma...@gmail.com>
Subject Jackson Module Afterburner not working in Karaf 3.0.5
Date Sat, 07 May 2016 15:27:17 GMT
Hi,

I have a simple Hello World type Karaf Bundle. The activator code looks
like below:-

public class HelloWorldActivator implements BundleActivator {
        @Override
        public void start(BundleContext bundleContext) throws Exception {
            System.out.println("STARTING DEMO: hello, world\n");
            System.out.println(getJsonDataAsString());
        }

        @Override
        public void stop(BundleContext bundleContext) throws Exception {
            System.out.println("STOPPING DEMO");
        }

        private String getJsonDataAsString() {
            JsonDataBlob jsonDataBlob = new JsonDataBlob();
            ObjectMapper objectMapper = new ObjectMapper();
            objectMapper.registerModule(new AfterburnerModule());
            try {
                return objectMapper.writeValueAsString(jsonDataBlob);
            } catch(Exception e) {
                e.printStackTrace();
            }
            return "";
        }
}

pom.xml looks like below:-

<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>com.hello</groupId>
    <artifactId>world</artifactId>
    <version>0.0.1</version>
    <packaging>bundle</packaging>
    <name>Hello World</name>
    <dependencies>
        <!-- OSGi -->
        <dependency>
            <groupId>org.osgi</groupId>
            <artifactId>org.osgi.core</artifactId>
            <version>4.3.1</version>
        </dependency>
        <dependency>
            <groupId>org.osgi</groupId>
            <artifactId>org.osgi.compendium</artifactId>
            <version>4.3.1</version>
        </dependency>
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20160212</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.6.2</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.6.2</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.6.2</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-afterburner</artifactId>
            <version>2.7.1</version>
        </dependency>



    </dependencies>
    <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <excludes>
                        <exclude>**/com/hello/main/*</exclude>
                    </excludes>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
                <version>2.4.0</version>
                <inherited>true</inherited>
                <extensions>true</extensions>
                <configuration>
                    <instructions>

<Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
                        <Bundle-Version>${project.version}</Bundle-Version>

<Bundle-Activator>com.hello.world.HelloWorldActivator</Bundle-Activator>
                        <Import-Package>*;resolution:=optional</Import-Package>
                    </instructions>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

The java object which I am trying to convert to json is a simple object as
shown below:-

package com.hello.world;
public class JsonDataBlob {
    private String add1 = "JP Naagar";
    private String add2 = "";
    private int shippartagent = 1;

    public String getAdd1() {
        return add1;
    }

    public void setAdd1(String add1) {
        this.add1 = add1;
    }

    public String getAdd2() {
        return add2;
    }

    public void setAdd2(String add2) {
        this.add2 = add2;
    }

    public int getShippartagent() {
        return shippartagent;
    }

    public void setShippartagent(int shippartagent) {
        this.shippartagent = shippartagent;
    }
}



Whenever I am trying to install the bundle I am getting the below
exception:-

2016-05-07 15:36:48,986 | WARN  | x-6.1-2.0/deploy | fileinstall
               | 7 - org.apache.felix.fileinstall - 3.5.0 | Error
while starting bundle:
file:/Users/debraj/Downloads/apache-servicemix-6.1-2.0/deploy/world-0.0.1.jar
org.osgi.framework.BundleException: Activator start error in bundle world [239].
        at org.apache.felix.framework.Felix.activateBundle(Felix.java:2196)[org.apache.felix.framework-4.2.1.jar:]
        at org.apache.felix.framework.Felix.startBundle(Felix.java:2064)[org.apache.felix.framework-4.2.1.jar:]
        at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:955)[org.apache.felix.framework-4.2.1.jar:]
        at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundle(DirectoryWatcher.java:1245)[7:org.apache.felix.fileinstall:3.5.0]
        at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundles(DirectoryWatcher.java:1217)[7:org.apache.felix.fileinstall:3.5.0]
        at org.apache.felix.fileinstall.internal.DirectoryWatcher.doProcess(DirectoryWatcher.java:509)[7:org.apache.felix.fileinstall:3.5.0]
        at org.apache.felix.fileinstall.internal.DirectoryWatcher.process(DirectoryWatcher.java:358)[7:org.apache.felix.fileinstall:3.5.0]
        at org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:310)[7:org.apache.felix.fileinstall:3.5.0]
Caused by: java.lang.NoClassDefFoundError:
com/fasterxml/jackson/module/afterburner/AfterburnerModule
        at java.lang.Class.getDeclaredConstructors0(Native Method)[:1.8.0_77]
        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)[:1.8.0_77]
        at java.lang.Class.getConstructor0(Class.java:3075)[:1.8.0_77]
        at java.lang.Class.newInstance(Class.java:412)[:1.8.0_77]
        at org.apache.felix.framework.Felix.createBundleActivator(Felix.java:4336)
        at org.apache.felix.framework.Felix.activateBundle(Felix.java:2141)
        ... 7 more
Caused by: java.lang.ClassNotFoundException:
com.fasterxml.jackson.module.afterburner.AfterburnerModule not found
by world [239]
        at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1532)[org.apache.felix.framework-4.2.1.jar:]
        at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:75)[org.apache.felix.framework-4.2.1.jar:]
        at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1955)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)[:1.8.0_77]
        ... 13 more


All the required Jackson bundles are installed in Karaf:-

karaf@root>bundle:list | grep Jackson
123 | Active    |  50 | 2.6.2                              |
Jackson-core
125 | Active    |  50 | 2.6.2                              |
Jackson-annotations
238 | Installed |  80 | 2.7.1                              |
Jackson-module-Afterburner
karaf@root>bundle:list | grep jackson
124 | Active    |  50 | 2.6.2                              | jackson-databind

Everything works fine if I just comment out the below line:-

objectMapper.registerModule(new AfterburnerModule());

I have placed the required code in github
<https://github.com/debraj-manna/afterburner-issue>

Has anyone able to execute the Jackson's Afterburner module in Karaf 3.0.5?

Thanks,

Debraj

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