Difference between revisions of "Registry-Publisher"

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(Sample usages)
(Sample usages)
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<source lang="Java">
 
<source lang="Java">
ScopeProvider.instance.set("/gcube/devsec");
+
import org.gcube.common.resources.gcore.GenericResource;
GenericResource generic = Resources.unmarshal(GenericResource.class, PublisherTest.class.getClassLoader().getResourceAsStream("generic2.xml"));
+
import org.gcube.common.resources.gcore.Resource;
RegistryPublisher rp=RegistryPublisherFactory.create();
+
import org.gcube.common.resources.gcore.Resource.Type;
Resource r=rp.update(generic);
+
import org.gcube.common.resources.gcore.Resources;
 +
import org.gcube.common.scope.api.ScopeProvider;
 +
 
 +
public void update(){
 +
    ScopeProvider.instance.set("/gcube/devsec");
 +
    GenericResource generic = Resources.unmarshal(GenericResource.class, PublisherTest.class.getClassLoader().getResourceAsStream("generic2.xml"));
 +
    RegistryPublisher rp=RegistryPublisherFactory.create();
 +
    Resource r=rp.update(generic);
 +
}
 
</source>
 
</source>

Revision as of 14:33, 12 April 2013


In conjunction with the IC-Client, the Registry-Publisher represents the mediation layer gCube Services, based on FWS, will rely on to interact with the Information Service as a whole.



Design

The Registry-Publisher is a Java library providing the implementation of two interfaces (RegistryPublisher and ScopedPublisher) that allow services to publish GCUBEResource as well as their state in the IS.

More specifically:

  • by implementing the org.gcube.common.core.informationsystem.publisher.RegistryPublisher interface, the library allows gCube services to publish GCUBEResources and instances' states as of the gCube Resource Model defined in Common-gcore-resources;
  • by implementing the org.gcube.informationsystem.publisher.ScopedPublisher interface, the library allows gCube services to publish GCUBEResources and instances' states as of the gCube Resource Model defined in Common-gcore-resources in multi scope way;

Publishing a resource

In order to publish a Resource the Registry-Publisher contacts the IS-Registry service of the current scope by invoking its appropriate operations.

Interfaces

The only different between RegistryPublisher interface and ScopedPublisher interface is:

  • RegistryPublisher interface publish resources on the current scope specified by ScopeProvider;
  • ScopedPublisher interface publish resources on a List of scopes, calling for every scope the RegistryPublisher interface

RegistryPublisher interface

The following operation can be used to manage profiles on the IS:

  • register() – which takes as input parameter a resource (gCUBEResource), and returns the resource updated and filled of;
  • update() – which takes as input parameter a message containing a resource and updates a resource previously registered in the IS.
  • remove() – which takes as input parameter a resource and removes the corresponding resource previously registered in the IS;

ScopedPublisher interface

The following operation can be used to manage profiles on the IS:

  • register() – which takes as input parameter a resource (gCUBEResource), a list of String that identify operational scope (GCUBEScope) and returns the resource updated and filled of ;
  • update() – which takes as input parameter a resource, a list of String that identify operational scope (GCUBEScope) and updates a resource previously registered in the IS.
  • remove() – which takes as input parameter a resource, a list of String that identify operational scope (GCUBEScope) and removes the corresponding resource previously registered in the IS;

Sample usages

Here it is an example of GenericResource registration by RegistryPublisher interface:

import org.gcube.common.resources.gcore.GenericResource;
import org.gcube.common.resources.gcore.Resource;
import org.gcube.common.resources.gcore.Resource.Type;
import org.gcube.common.resources.gcore.Resources;
import org.gcube.common.scope.api.ScopeProvider;
 
public void create(){
    ScopeProvider.instance.set("/gcube/devsec");
    GenericResource generic = Resources.unmarshal(GenericResource.class, PublisherTest.class.getClassLoader().getResourceAsStream("generic2.xml"));
    RegistryPublisher rp=RegistryPublisherFactory.create();
    Resource r=rp.create(generic);
}


Here it is an example of GenericResource registration by ScopedPublisher interface:

import org.gcube.common.resources.gcore.GenericResource;
import org.gcube.common.resources.gcore.Resource;
import org.gcube.common.resources.gcore.Resource.Type;
import org.gcube.common.resources.gcore.Resources;
import org.gcube.common.scope.api.ScopeProvider;
 
public void create(){
 
    ScopeProvider.instance.set("/gcube/devsec");
    GenericResource generic = Resources.unmarshal(GenericResource.class, PublisherTest.class.getClassLoader().getResourceAsStream("generic2.xml"));
    List<String> scopes=new ArrayList<String>();
    scopes.add("/gcube/devsec");
    scopes.add("/gcube");
    ScopedPublisher sp=RegistryPublisherFactory.scopedPublisher();
    Resource r=sp.create(generic, scopes);

Here it is an example of GenericResource update by RegistryPublisher interface:

import org.gcube.common.resources.gcore.GenericResource;
import org.gcube.common.resources.gcore.Resource;
import org.gcube.common.resources.gcore.Resource.Type;
import org.gcube.common.resources.gcore.Resources;
import org.gcube.common.scope.api.ScopeProvider;
 
public void update(){
    ScopeProvider.instance.set("/gcube/devsec");
    GenericResource generic = Resources.unmarshal(GenericResource.class, PublisherTest.class.getClassLoader().getResourceAsStream("generic2.xml"));
    RegistryPublisher rp=RegistryPublisherFactory.create();
    Resource r=rp.update(generic);
}