method exist user added

CHANGELOG.md

@@ -3,6 +3,12 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v1.2.2] - [2021-02-08]
+
+### Feature
+
+method for user existence check added
+
 
 ## [v1.2.1] - [2020-07-17]
 

pom.xml

@@ -18,7 +18,7 @@
 
 	<groupId>org.gcube.common</groupId>
 	<artifactId>storagehub-client-library</artifactId>
-	<version>1.2.1</version>
+	<version>1.2.2</version>
 	<name>storagehub-client-library</name>
 
 	<dependencyManagement>

src/main/java/org/gcube/common/storagehub/client/dsl/StorageHubClient.java

@@ -76,4 +76,9 @@ public class StorageHubClient {
 	public void deleteUserAccount(String userId) throws StorageHubException {
 		userClient.removeUser(userId);
 	}
+	
+	public boolean userExists(String user) throws StorageHubException {
+		return userClient.exists(user);
+	}
+	
 }

src/main/java/org/gcube/common/storagehub/client/plugins/AbstractPlugin.java

@@ -1,6 +1,5 @@
 package org.gcube.common.storagehub.client.plugins;
 
-import org.gcube.common.authorization.library.policies.Users;
 import org.gcube.common.clients.Plugin;
 import org.gcube.common.clients.ProxyBuilder;
 import org.gcube.common.clients.ProxyBuilderImpl;

src/main/java/org/gcube/common/storagehub/client/plugins/GroupManagerPlugin.java

@@ -12,9 +12,7 @@ import org.gcube.common.gxrest.response.entity.SerializableErrorEntityTextReader
 import org.gcube.common.storagehub.client.Constants;
 import org.gcube.common.storagehub.client.MyInputStreamProvider;
 import org.gcube.common.storagehub.client.proxies.DefaultGroupManager;
-import org.gcube.common.storagehub.client.proxies.DefaultUserManager;
 import org.gcube.common.storagehub.client.proxies.GroupManagerClient;
-import org.gcube.common.storagehub.client.proxies.UserManagerClient;
 import org.glassfish.jersey.media.multipart.MultiPartFeature;
 import org.w3c.dom.Node;
 

src/main/java/org/gcube/common/storagehub/client/proxies/DefaultUserManager.java

@@ -12,6 +12,7 @@ import org.gcube.common.clients.delegates.ProxyDelegate;
 import org.gcube.common.gxrest.request.GXWebTargetAdapterRequest;
 import org.gcube.common.gxrest.response.inbound.GXInboundResponse;
 import org.gcube.common.storagehub.model.exceptions.BackendGenericError;
+import org.gcube.common.storagehub.model.exceptions.IdNotFoundException;
 import org.gcube.common.storagehub.model.exceptions.StorageHubException;
 import org.gcube.common.storagehub.model.exceptions.UserNotAuthorizedException;
 
@@ -127,5 +128,39 @@ public class DefaultUserManager implements UserManagerClient {
 			throw new RuntimeException(e1);
 		}
 	}
+	
+	@Override
+	public boolean exists(String user) throws StorageHubException {
+		Call<GXWebTargetAdapterRequest, Boolean> call = new Call<GXWebTargetAdapterRequest,  Boolean>() {
+			@Override
+			public  Boolean call(GXWebTargetAdapterRequest manager) throws Exception {
+				GXWebTargetAdapterRequest myManager = manager.path(user);
+
+				GXInboundResponse response = myManager.get();
+
+				if (response.isErrorResponse()) {
+					if (response.hasException()) 
+						if (response.getException().getClass().equals(IdNotFoundException.class))
+							return false;
+						else throw response.getException();
+					else if (response.getHTTPCode()==403)
+						throw new UserNotAuthorizedException("the call to this method is not allowed for the user");
+					
+					else 
+						throw new BackendGenericError();
+				}
+
+				return true;
+			}
+		};
+		try {
+			return delegate.make(call);
+		}catch(StorageHubException e) {
+			throw e;
+		}catch(Exception e1) {
+			throw new RuntimeException(e1);
+		}
+	}
+
 
 }

src/main/java/org/gcube/common/storagehub/client/proxies/UserManagerClient.java

@@ -11,5 +11,7 @@ public interface UserManagerClient {
 	void removeUser(String userId) throws StorageHubException;
 	
 	List<String> getUsers() throws StorageHubException;
+
+	boolean exists(String user) throws StorageHubException;
 	
 }