Using ContextCache to get context representation

src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientFactory.java

@@ -6,6 +6,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Random;
 
+import org.gcube.common.authorization.library.AuthorizationEntry;
 import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
 import org.gcube.common.resources.gcore.GCoreEndpoint;
 import org.gcube.common.resources.gcore.ServiceEndpoint;
@@ -25,6 +26,7 @@ public class ResourceRegistryClientFactory {
 	
 	protected static Map<String, ResourceRegistryClient> clients;
 
+	protected static List<String> addresses;
 	protected static boolean hierarchicalMode;
 	
 	public static boolean isHierarchicalMode() {
@@ -46,8 +48,6 @@ public class ResourceRegistryClientFactory {
 		hierarchicalMode = false;
 	}
 	
-	
-	
 	private static String classFormat = "$resource/Profile/ServiceClass/text() eq '%1s'";
 	private static String nameFormat = "$resource/Profile/ServiceName/text() eq '%1s'";
 	private static String statusFormat = "$resource/Profile/DeploymentData/Status/text() eq 'ready'";
@@ -58,7 +58,16 @@ public class ResourceRegistryClientFactory {
 	private static String serviceEndpointNameFormat = "$resource/Profile/Name/text() eq '%1s'";
 	private static String serviceEndpointstatusFormat = "$resource/Profile/RunTime/Status/text() eq 'READY'";
 
-	
+	public static String getCurrentContextFullName() {
+		String token = SecurityTokenProvider.instance.get();
+		AuthorizationEntry authorizationEntry = null;
+		try {
+			authorizationEntry = org.gcube.common.authorization.client.Constants.authorizationService().get(token);
+		} catch(Exception e) {
+			return ScopeProvider.instance.get();
+		}
+		return authorizationEntry.getContext();
+	}
 	
 	private static SimpleQuery queryForService(){
 		return ICFactory.queryFor(GCoreEndpoint.class)
@@ -100,41 +109,29 @@ public class ResourceRegistryClientFactory {
 	}
 	
 	
+
 	public static ResourceRegistryClient create() {
+		String address = null;
+		
 		if(FORCED_URL!=null){
-			return new ResourceRegistryClientImpl(FORCED_URL);
+			address = FORCED_URL;
-		}
-		
-		String key = null;
-		if (SecurityTokenProvider.instance.get() == null) {
-			if (ScopeProvider.instance.get() == null) {
-				throw new RuntimeException(
-						"Null Token and Scope. Please set your token first.");
-			}
-			key = ScopeProvider.instance.get();
 		}else {
-			key = SecurityTokenProvider.instance.get();
+		
+			if(addresses==null) {
+				addresses = getAddresses();
 			}
 				
-		ResourceRegistryClient client = clients.get(key);
-		
-		if(client==null){
-			
-			List<String> addresses = getAddresses();
-			
 			if(addresses==null || addresses.isEmpty()){
-				String error = String.format("No %s:%s found in the current context", Constants.SERVICE_CLASS, Constants.SERVICE_NAME);
+				String error = String.format("No %s:%s found in the current context %s", Constants.SERVICE_CLASS, Constants.SERVICE_NAME, getCurrentContextFullName());
 				throw new RuntimeException(error);
 			}
 				
 			Random random = new Random();
 			int index = random.nextInt(addresses.size());
-	        
+			address = addresses.get(index);
-			client = new ResourceRegistryClientImpl(addresses.get(index));
-			
 		}
 		
-		return client;
+		return new ResourceRegistryClientImpl(address);
 	}
 	
 }

src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientImpl.java

@@ -18,6 +18,8 @@ import org.gcube.informationsystem.model.reference.entities.Resource;
 import org.gcube.informationsystem.model.reference.relations.ConsistsOf;
 import org.gcube.informationsystem.model.reference.relations.IsRelatedTo;
 import org.gcube.informationsystem.model.reference.relations.Relation;
+import org.gcube.informationsystem.resourceregistry.api.contexts.ContextCache;
+import org.gcube.informationsystem.resourceregistry.api.contexts.ContextCacheRenewal;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.AvailableInAnotherContextException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.NotFoundException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
@@ -60,8 +62,7 @@ public class ResourceRegistryClientImpl implements ResourceRegistryClient {
 		gxHTTPStringRequest.queryParams(queryParams);
 	}
 	
-	@Override
+	public List<Context> getAllContextFromServer() throws ResourceRegistryException {
-	public List<Context> getAllContext() throws ContextNotFoundException, ResourceRegistryException {
 		try {
 			logger.info("Going to read all {}s", Context.NAME);
 			GXHTTPStringRequest gxHTTPStringRequest = GXHTTPStringRequest.newRequest(address); 
@@ -75,6 +76,7 @@ public class ResourceRegistryClientImpl implements ResourceRegistryClient {
 			
 			logger.debug("Got Contexts are {}", ret);
 			return ElementMapper.unmarshalList(Context.class, ret);
+			
 		} catch(ResourceRegistryException e) {
 			// logger.trace("Error while getting {} schema for {}", polymorphic ?
 			// AccessPath.POLYMORPHIC_PARAM + " " : "",
@@ -88,8 +90,25 @@ public class ResourceRegistryClientImpl implements ResourceRegistryClient {
 		}
 	}
 	
-	protected Context getContext(String id) throws ContextNotFoundException, ResourceRegistryException {
+	@Override
+	public List<Context> getAllContext() throws ResourceRegistryException {
+		ContextCacheRenewal contextCacheRenewal = new ContextCacheRenewal() {
+				
+			@Override
+			public List<Context> renew() throws ResourceRegistryException {
+				return getAllContextFromServer();
+			}
+			
+		};
+		ContextCache contextCache = ContextCache.getInstance();
+		contextCache.setContextCacheRenewal(contextCacheRenewal);
+		return contextCache.getContexts();
+	}
+	
+	protected Context getContextFromServer(String id) throws ContextNotFoundException, ResourceRegistryException {
 		try {
+			// TODO use cache
+			
 			logger.info("Going to get current {} ", Context.NAME);
 			GXHTTPStringRequest gxHTTPStringRequest = GXHTTPStringRequest.newRequest(address); 
 			gxHTTPStringRequest.from(ResourceRegistryClient.class.getSimpleName());
@@ -118,12 +137,29 @@ public class ResourceRegistryClientImpl implements ResourceRegistryClient {
 	
 	@Override
 	public Context getContext(UUID uuid) throws ContextNotFoundException, ResourceRegistryException {
-		return getContext(uuid.toString());
+		return ContextCache.getInstance().getContextByUUID(uuid);
 	}
 	
 	@Override
 	public Context getCurrentContext() throws ContextNotFoundException, ResourceRegistryException {
-		return getContext(AccessPath.CURRENT_CONTEXT);
+		String contextFullName = ResourceRegistryClientFactory.getCurrentContextFullName();
+		ContextCache contextCache = ContextCache.getInstance();
+		UUID uuid = contextCache.getUUIDByFullName(contextFullName);
+		Context context = null;
+		if(uuid == null) {
+			context = getContextFromServer(AccessPath.CURRENT_CONTEXT);
+			contextCache.cleanCache();
+			contextCache.refreshContextsIfNeeded();
+			Context c = contextCache.getContextByUUID(context.getHeader().getUUID());
+			if(c!=null){
+				context = c;
+			}else {
+				logger.error("Current Context is {}. It is possibile to get it from the server but not from the cache. This is very strange and should not occur.", contextFullName);
+			}
+		}else {
+			context = contextCache.getContextByUUID(uuid);
+		}
+		return context;
 	}
 	
 	@Override