Convert to OSGI & FEATURE (example workflow-core)

1. Change pom.xml in relevant project

<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.wso2telco.dep</groupId>
<artifactId>component-dep</artifactId>
   <version>2.3.2-SNAPSHOT</version>
<relativePath>../../pom.xml</relativePath>
</parent>

<artifactId>workflow-core</artifactId>
<packaging>bundle</packaging>
<name>WSO2.Telco Workflow Core Module</name>
<description>WSO2.Telco - Workflow module</description>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

</properties>

<build>

<plugins>

<plugin>

<groupId>org.apache.felix</groupId>

<artifactId>maven-scr-plugin</artifactId>

<version>1.7.2</version>

<executions>

<execution>

<id>generate-scr-scrdescriptor</id>

<goals>

<goal>scr</goal>

</goals>

</execution>

</executions>

</plugin>

<plugin>

<groupId>org.apache.felix</groupId>

<artifactId>maven-bundle-plugin</artifactId>

<extensions>true</extensions>

<version>2.3.5</version>

<configuration>

<obrRepository>NONE</obrRepository>

<instructions>

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

<Bundle-Name>${project.artifactId}</Bundle-Name>

<Private-Package/>

<Export-Package>

org.workflow.*

</Export-Package>

<Import-Package>

*;resolution:=optional

</Import-Package>

<Embed-Dependency>

scribe;scope=compile|runtime;inline=false;

</Embed-Dependency>

<DynamicImport-Package>*</DynamicImport-Package>

<Carbon-Component>UIBundle</Carbon-Component>

</instructions>

</configuration>

</plugin>

</plugins>

</build>

2. Create feature folder in component-dep like this 

com.wso2telco.dep.workflow-core.feature

3. Add pom.xml and add these contents

<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">

    <parent>

        <groupId>com.wso2telco.dep</groupId>

        <artifactId>component-dep-feature</artifactId>

        <version>2.3.2-SNAPSHOT</version>

        <relativePath>../pom.xml</relativePath>

    </parent>

    <modelVersion>4.0.0</modelVersion>

    <artifactId>com.wso2telco.dep.workflow.core.feature</artifactId>

    <packaging>pom</packaging>

    <name>WSO2.Telco Workflow Core Service</name>

    <description>This feature contains the server bundles required for workflow core service</description>

    <build>

        <plugins>

            <plugin>

                <groupId>org.wso2.maven</groupId>

                <artifactId>carbon-p2-plugin</artifactId>

                <version>${carbon.p2.plugin.version}</version>

                <executions>

                    <execution>

                        <id>p2-feature-generation</id>

                        <phase>package</phase>

                        <goals>

                            <goal>p2-feature-gen</goal>

                        </goals>

                        <configuration>

                            <id>com.wso2telco.dep.workflow.core</id>

                            <propertiesFile>../feature.properties</propertiesFile>

                            <adviceFile>

                                <properties>

                                    <propertyDef>org.wso2.carbon.p2.category.type:server</propertyDef>

                                    <propertyDef>org.eclipse.equinox.p2.type.group:true</propertyDef>

                                </properties>

                            </adviceFile>

                            <bundles>

                                <bundleDef>com.wso2telco.dep:workflow-core:${com.wso2telco.dep.version}</bundleDef>

                            </bundles>

                        </configuration>

                    </execution>

                </executions>

            </plugin>

        </plugins>

    </build>

</project>

4. Change product-hub\modules\p2-profile\product\pom.xml

<featureArtifactDef>

com.wso2telco.dep:com.wso2telco.dep.workflow.core.feature:${com.wso2telco.dep.version}

</featureArtifactDef>

<feature>

<id>com.wso2telco.dep.workflow.core.feature.group</id>

<version>${com.wso2telco.dep.version}</version>

</feature>

//7 places

5. Change component-dep\pom.xml 

<module>components/workflow-core</module>

6. Change component-dep\features\pom.xml

<module>com.wso2telco.dep.workflow.core.feature</module>

Verify product-hub dep & core versions and core-util/component-dep versions..