THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
This is an attempt to sketch out the admin and developer visible changes that could be used to support version specific contributors.
Below is a sample of how the ServiceDeploymentContributor contract could be enhanced to declare support for particular versions.
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package org.apache.hadoop.gateway.deploy;
import org.apache.hadoop.gateway.topology.Service;
// An extension to base interface for backward compatibility with existing contributors.
// Service located and loaded via the base interface.
public interface VersionedServiceDeploymentContributor extends ServiceDeploymentContributor {
// The list of versions supported by this contributor.
// Each element is formatted according to the Maven Enforcer plugin syntax.
// Returning null indicates that all versions are supported.
String[] getVersions();
} |
Below is a sample of how version could be added to the topology file.
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<topology>
<gateway>
...
</gateway>
....
<service>
<role>HIVE</role>
<version>0.13.0</version>
<url>http://localhost:10001/cliservice</url>
</service>
</topology> |
...