Download Taverna OSGi plugin system

Apache Taverna OSGi plugin system (incubating) is a plugin system for Java console and desktop applications using OSGi, including an online update mechanism.

Maven artifacts¶

Apache Taverna OSGi is available from Maven Central, mirrored from ASF's Maven repository. For convenience of IDE users, the Maven artifacts include -javadoc.jar and -sources.jar; however, you might prefer the online API javadoc and the source code releases (see below).

To use Taverna OSGi APIs with Maven, add one or more of these to your pom.xml:

<dependencies>
    <dependency>
        <groupId>org.apache.taverna.osgi</groupId>
        <artifactId>taverna-app-configuration-api</artifactId>
        <version>0.2.1-incubating</version>
    </dependency>
    <dependency>
        <groupId>org.apache.taverna.osgi</groupId>
        <artifactId>taverna-configuration-api</artifactId>
        <version>0.2.1-incubating</version>
    </dependency>
    <dependency>
        <groupId>org.apache.taverna.osgi</groupId>
        <artifactId>taverna-download-api</artifactId>
        <version>0.2.1-incubating</version>
    </dependency>
    <dependency>
        <groupId>org.apache.taverna.osgi</groupId>
        <artifactId>taverna-plugin-api</artifactId>
        <version>0.2.1-incubating</version>
    </dependency>
    <dependency>
        <groupId>org.apache.taverna.osgi</groupId>
        <artifactId>taverna-update-api</artifactId>
        <version>0.2.1-incubating</version>
    </dependency>
</dependencies>

The <version> above might not be up to date, see the source code releases below to find the latest version.

To use the OSGi implementations of these services, replace -api with -impl above.

Usage¶

See the taverna-osgi javadoc for details on each OSGi service. In brief:

• The OsgiLauncher starts the OSGi framework and installs the provided OSGi bundles. It is used by the taverna-commandline-launcher main() method.
• The PluginManager service from taverna-plugin-api allow managing of plugins in an OSGi application, including online installation and updates of plugins. Each Plugin provides a collection of OSGi bundles that are activated. The plugins and application profile are described in XML according to the taverna-osgi-schemas.
• The UpdateManager can update the installed plugins by downloading from the configured plugin site URI.
• The taverna-maven-plugin allows creating plugins for the Taverna PluginManager using Apache Maven, including deployment to plugin sites.
• The DownloadManager service from taverna-download-api provides convenience methods for downloading a URI to a Path, including hashsum checking using neighbouring .sha1 or .md5 URIs. Used by PluginManager and UpdateManager.
• The ApplicationConfiguration service provides application installation details like the startup directory and home directory for user configuration. The application should have a conf/taverna.app.properties file in its startup folder, e.g. taverna.app.name=taverna-cl-3.0.0 means ~/.taverna-cl-3.0.0/ will be the application's home directory on Unix.
• The ConfigurationManager service from taverna-configuration-api can configure any Configurable like the HTTPProxyConfiguration and the workbench using preferences stored in the application home directory
• The xml-parser-service and xml-transformer-service re-exposes Xalan's and Xerces's XML parser and XML transformer implementations within SOGi

Spring services¶

The OSGi services should be discoverable as Spring services, e.g. by adding to your META-INF/spring/update-context-osgi.xml:

<beans:beans xmlns="http://www.springframework.org/schema/osgi" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:beans="http://www.springframework.org/schema/beans"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                                 http://www.springframework.org/schema/beans/spring-beans.xsd
                                 http://www.springframework.org/schema/osgi
                                 http://www.springframework.org/schema/osgi/spring-osgi.xsd">
    <reference id="applicationConfiguration" interface="org.apache.taverna.configuration.app.ApplicationConfiguration" />
    <reference id="proxyConfiguration" interface="org.apache.taverna.configuration.proxy.HttpProxyConfiguration" />
    <reference id="configurationManager" interface="org.apache.taverna.configuration.ConfigurationManager" />
    <reference id="downloadManager" interface="org.apache.taverna.download.DownloadManager" />
    <reference id="pluginManager" interface="org.apache.taverna.plugin.PluginManager" />
    <reference id="updateManager" interface="org.apache.taverna.update.UpdatenManager" />
</beans:beans>

Source code¶

Below you can find all Taverna OSGi source releases.

After downloading the files, verify the PGP signatures using the Apache Taverna KEYS file.

taverna-osgi-0.2.1-incubating¶

Apache Taverna OSGi 0.2.1-incubating was published on 2016-03-11, and is available for download from official mirrors of the ASF Distribution Directory incubator/taverna/:

• taverna-osgi-0.2.1-incubating-source-release.zip (asc, md5, sha1, sha256, sha512)

The Taverna OSGi changelog is available from the Apache Taverna Jira.

Source code repositories¶

For the latest developments you may also be interested in the corresponding source code repositories:

• incubator-taverna-osgi

Each release has a corresponding tag, e.g. 0.2.1-incubating.

Archived releases¶

For all archived Apache Taverna releases, see archive.apache.org.