Issue with configuring solr dependencies with bnd plugin (solr - zookeper)

[#1]

Hi,

I am following the tutorial Integrating SOLR with Adobe Experience Manager  to integrate with SOLR 8.8 from AEM 6.5.7. The tutorial uses maven-scr-plugin  to create a bundle where I have a project based on Adobe archetype that uses bnd-maven-plugin. 

 I added the following dependencies to the parent pom, and same (without version) to the core sub project pom.

<dependency>
    <groupId>org.apache.servicemix.bundles</groupId>
    <artifactId>org.apache.servicemix.bundles.solr-solrj</artifactId>
    <version>8.7.0_1</version>
</dependency>

<dependency>
    <groupId>org.apache.zookeeper</groupId>
    <artifactId>zookeeper</artifactId>
    <version>3.6.2</version>
</dependency>

When I build the project the bundle is installed with all dependencies resolved (I uploaded org.apache.servicemix.bundles.solr-solrj bundle manually to the felix console for now).

But when I try to run the simple code snippet like

HttpSolrClient client = new HttpSolrClient.Builder(solrUrl)
    .build();
SolrInputDocument documentsolr = new SolrInputDocument();
documentsolr.addField("path", path);
documentsolr.addField("time", System.nanoTime());

client.add(documentsolr);
client.commit();

I am getting NoClassDefFoundError for class from zookeper dependency

java.lang.NoClassDefFoundError: org/apache/zookeeper/server/ByteBufferInputStream
	at org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:698)
	at org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:266)
	at org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:248)

Could you please advise how can I make sure that the required class in in the classpath of my bundle. Seems there is more to configure in bnd-maven-plugin then in the maven-scr-plugin and I can not get it right

Thanks ! 🙂 

[#2 · Accepted solution]

Hi @bartek887,

At times for some dependencies, using -conditionalpackage with bnd-maven-plugin might not resolve the dependencies completely. 

I suggest to create/build and deploy the OSGI bundle standalone using maven-bundle-plugin which has below instructions responsible for including all the compile and run time dependencies. 

<Embed-Dependency>*;inline=true</Embed-Dependency> 
<Embed-Transitive>true</Embed-Transitive>

https://myaemlearnings.blogspot.com/2021/02/createbuild-and-install-osgi-bundle-of.html (have created a post related to this last month)

[#3]

Thanks @Vijayalakshmi_S for your help. I hoped I will be able to make it work without creating custom dependency but it seems this is not the way to go. I followed your blog post and created a custom bundle with the following pom (working on AEM 6.5.7)

<project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.company.osgi.wrapped</groupId>
    <artifactId>org.apache.zookeeper-osgi</artifactId>
    <packaging>bundle</packaging>

    <name>OSGi wrapper for Apache Zookeper</name>
    <version>3.6.2</version>
    
    <dependencies>
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.6.2</version>
        </dependency>
        <dependency>
            <artifactId>commons-lang</artifactId>
            <groupId>commons-lang</groupId>
            <version>2.6</version>
            <scope>provided</scope>
        </dependency>

    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
                <extensions>true</extensions>
                <version>4.2.1</version>
                <configuration>
                    <instructions>
                        <Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
                        <Bundle-Name>${project.name}</Bundle-Name>
                        <Bundle-Vendor>${project.organization.name}</Bundle-Vendor>
                        <Import-Package>
                            org.apache.commons.lang.*
                        </Import-Package>
                        <Embed-Dependency>*;scope=compile|runtime</Embed-Dependency>
                        <Embed-Transitive>true</Embed-Transitive>
                        <_exportcontents>
                            org.apache.zookeeper.*
                        </_exportcontents>
                    </instructions>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

[bartek887]

Hey @bartek887 try adding this in your bundle pom.xml :

<executions>
<execution>
<id>bnd-process</id>
<goals>
<goal>bnd-process</goal>
</goals>
<configuration>
<bnd><![CDATA[
-conditionalpackage: org.apache.zookeeper.*
..
..
]]></bnd>
</configuration>
</execution>
</executions>

I hope this helps 🙂

Thanks,

Bilal.

[bartek887]

I also checked this and it won't work

[bartek887]

@bartek887 

Class ByteBufferInputStream is available at compile time but not at runtime. Try Embedding all dependencies(at least runtime ) in bnd-maven-plugin configuration.

<plugin>
    <groupId>biz.aQute.bnd</groupId>
    <artifactId>bnd-maven-plugin</artifactId>
    <executions>
        <execution>
            <id>bnd-process</id>
            <goals>
                <goal>bnd-process</goal>
            </goals>
            <configuration>
                <bnd><![CDATA[
Embed-Dependency: *;scope=compile|runtime
                                ]]></bnd>
            </configuration>
        </execution>
    </executions>
</plugin>

[bartek887]

Unfortunately this did not help with the issue, class still can not be found.

[#8]

@bartek887 

Have you figured it out? Could you please post your solution. Many thanks