org.apache.stanbol.commons.solr.web.impl

Class SolrServerPublishingComponent

java.lang.Object

org.apache.stanbol.commons.solr.web.impl.SolrServerPublishingComponent

public class SolrServerPublishingComponent
extends Object

Component that publishes all Solr CoreContainer (registered as OSGI service) where SolrConstants.PROPERTY_SERVER_PUBLISH_REST is enabled via a SolrDispatchFilter under /{global-prefix}/{server-name} where

• global-prefix is the configured GLOBAL_PREFIX value
• server-name is the SolrConstants.PROPERTY_SERVER_NAME property of the ServiceReference for the CoreContainer.

  Note that CoreContainer without a value for the server name properties are not published.

  To publish specific CoreContainer at specific paths one can use the SolrDispatchFilterComponent.

Author:

Rupert Westenthaler

See Also:

SolrDispatchFilterComponent

Field Summary

Fields

Modifier and Type	Field and Description
protected org.osgi.service.component.ComponentContext	context
protected org.apache.felix.http.api.ExtHttpService	extHttpService Will only work within Apache Felix.
protected Map<String,List<org.osgi.framework.ServiceReference>>	solrServerRefMap The key is the name and the value represents a sorted list of ServiceReference to CoreContainer based on the SolrConstants.PROPERTY_SERVER_RANKING value.

Constructor Summary

Constructors

Constructor and Description
SolrServerPublishingComponent()

Method Summary

Modifier and Type	Method and Description
protected void	activate(org.osgi.service.component.ComponentContext context)
protected void	deactivate(org.osgi.service.component.ComponentContext context)
protected void	updateFilter(String name, org.osgi.framework.ServiceReference ref, org.apache.solr.core.CoreContainer server) A change was made to the tracked CoreContainer (adding ,removal, ranking change).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

solrServerRefMap

protected final Map<String,List<org.osgi.framework.ServiceReference>> solrServerRefMap

The key is the name and the value represents a sorted list of ServiceReference to CoreContainer based on the SolrConstants.PROPERTY_SERVER_RANKING value.

Used to synchronise calls from the tracker (so that not to update two Filters at the same time.

extHttpService

@Reference
protected org.apache.felix.http.api.ExtHttpService extHttpService

Will only work within Apache Felix. Registration of servlet Filters is not part of the standard OSGI HttpService and therefore each OSGI implementation currently defines its own Interface to allow this.

To make this available in every OSGI Environment we would need to implement an own service with different implementation for supported OSGI Environments - or to wait until the standard is updated to also support filters.

context

protected org.osgi.service.component.ComponentContext context

Constructor Detail

SolrServerPublishingComponent

public SolrServerPublishingComponent()

Method Detail

activate

@Activate
protected void activate(org.osgi.service.component.ComponentContext context)
                           throws org.osgi.service.cm.ConfigurationException,
                                  javax.servlet.ServletException

Throws:

org.osgi.service.cm.ConfigurationException

javax.servlet.ServletException

updateFilter

protected void updateFilter(String name,
                            org.osgi.framework.ServiceReference ref,
                            org.apache.solr.core.CoreContainer server)

A change was made to the tracked CoreContainer (adding ,removal, ranking change). This removes and re-add the Servlet filter to apply such changes.

Parameters:

name - The name of the filter to be updated

ref - The serviceReference for the new CoreContainer to be added for the parsed name. null if the filter for that name needs only to be removed

server - The CoreContainer may be parsed in cases a reference is already available. If not the tracker is used to look it up based on the parsed reference. This is basically a workaround for the fact that if the call originates form ServiceTrackerCustomizer.addingService(ServiceReference) the CoreContainer is not yet available via the tracker.

deactivate

@Deactivate
protected void deactivate(org.osgi.service.component.ComponentContext context)