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Posted to commits@airavata.apache.org by sm...@apache.org on 2016/03/11 07:57:30 UTC

[14/16] airavata git commit: adding a API methof to verify if user exists within airavata

adding a API methof to verify if user exists within airavata


Project: http://git-wip-us.apache.org/repos/asf/airavata/repo
Commit: http://git-wip-us.apache.org/repos/asf/airavata/commit/471ae44a
Tree: http://git-wip-us.apache.org/repos/asf/airavata/tree/471ae44a
Diff: http://git-wip-us.apache.org/repos/asf/airavata/diff/471ae44a

Branch: refs/heads/master
Commit: 471ae44aec7c05a4eea3df2ce63093e1e6ce6c65
Parents: a1df4ad
Author: Suresh Marru <sm...@apache.org>
Authored: Fri Mar 11 01:48:30 2016 -0500
Committer: Suresh Marru <sm...@apache.org>
Committed: Fri Mar 11 01:48:30 2016 -0500

----------------------------------------------------------------------
 .../server/handler/AiravataServerHandler.java   |   21 +
 .../java/org/apache/airavata/api/Airavata.java  | 1552 +++++++++++++++++-
 .../main/resources/lib/airavata/Airavata.cpp    |  548 +++++++
 .../src/main/resources/lib/airavata/Airavata.h  |  180 ++
 .../lib/airavata/Airavata_server.skeleton.cpp   |   20 +
 .../resources/lib/Airavata/API/Airavata.php     |  387 +++++
 .../lib/apache/airavata/api/Airavata-remote     |    7 +
 .../lib/apache/airavata/api/Airavata.py         |  322 ++++
 .../apache/airavata/model/ComponentStatus.java  |    2 +-
 .../org/apache/airavata/model/EdgeModel.java    |    2 +-
 .../org/apache/airavata/model/NodeModel.java    |    2 +-
 .../org/apache/airavata/model/PortModel.java    |    2 +-
 .../apache/airavata/model/WorkflowModel.java    |    2 +-
 .../apache/airavata/model/WorkflowStatus.java   |    2 +-
 .../ApplicationDeploymentDescription.java       |    2 +-
 .../appdeployment/ApplicationModule.java        |    2 +-
 .../appcatalog/appdeployment/CommandObject.java |    2 +-
 .../appcatalog/appdeployment/SetEnvPaths.java   |    2 +-
 .../ApplicationInterfaceDescription.java        |    2 +-
 .../appcatalog/computeresource/BatchQueue.java  |    2 +-
 .../computeresource/CloudJobSubmission.java     |    2 +-
 .../ComputeResourceDescription.java             |    2 +-
 .../computeresource/GlobusJobSubmission.java    |    2 +-
 .../computeresource/JobSubmissionInterface.java |    2 +-
 .../computeresource/LOCALSubmission.java        |    2 +-
 .../computeresource/ResourceJobManager.java     |    2 +-
 .../computeresource/SSHJobSubmission.java       |    2 +-
 .../computeresource/UnicoreJobSubmission.java   |    2 +-
 .../ComputeResourcePreference.java              |    2 +-
 .../gatewayprofile/GatewayResourceProfile.java  |    2 +-
 .../gatewayprofile/StoragePreference.java       |    2 +-
 .../StorageResourceDescription.java             |    2 +-
 .../application/io/InputDataObjectType.java     |    2 +-
 .../application/io/OutputDataObjectType.java    |    2 +-
 .../airavata/model/commons/ErrorModel.java      |    2 +-
 .../model/commons/ValidationResults.java        |    2 +-
 .../airavata/model/commons/ValidatorResult.java |    2 +-
 .../data/movement/DataMovementInterface.java    |    2 +-
 .../data/movement/GridFTPDataMovement.java      |    2 +-
 .../model/data/movement/LOCALDataMovement.java  |    2 +-
 .../model/data/movement/SCPDataMovement.java    |    2 +-
 .../data/movement/UnicoreDataMovement.java      |    2 +-
 .../data/resource/DataReplicaLocationModel.java |    2 +-
 .../model/data/resource/DataResourceModel.java  |    2 +-
 .../model/error/AiravataClientException.java    |    2 +-
 .../model/error/AiravataSystemException.java    |    2 +-
 .../model/error/AuthenticationException.java    |    2 +-
 .../model/error/AuthorizationException.java     |    2 +-
 .../error/ExperimentNotFoundException.java      |    2 +-
 .../model/error/InvalidRequestException.java    |    2 +-
 .../model/error/LaunchValidationException.java  |    2 +-
 .../model/error/ProjectNotFoundException.java   |    2 +-
 .../airavata/model/error/TimedOutException.java |    2 +-
 .../airavata/model/error/ValidationResults.java |    2 +-
 .../airavata/model/error/ValidatorResult.java   |    2 +-
 .../model/experiment/ExperimentModel.java       |    2 +-
 .../model/experiment/ExperimentStatistics.java  |    2 +-
 .../experiment/ExperimentSummaryModel.java      |    2 +-
 .../experiment/UserConfigurationDataModel.java  |    2 +-
 .../org/apache/airavata/model/job/JobModel.java |    2 +-
 .../event/ExperimentStatusChangeEvent.java      |    2 +-
 .../model/messaging/event/JobIdentifier.java    |    2 +-
 .../messaging/event/JobStatusChangeEvent.java   |    2 +-
 .../event/JobStatusChangeRequestEvent.java      |    2 +-
 .../airavata/model/messaging/event/Message.java |    2 +-
 .../messaging/event/ProcessIdentifier.java      |    2 +-
 .../event/ProcessStatusChangeEvent.java         |    2 +-
 .../event/ProcessStatusChangeRequestEvent.java  |    2 +-
 .../messaging/event/ProcessSubmitEvent.java     |    2 +-
 .../messaging/event/ProcessTerminateEvent.java  |    2 +-
 .../model/messaging/event/TaskIdentifier.java   |    2 +-
 .../messaging/event/TaskOutputChangeEvent.java  |    2 +-
 .../messaging/event/TaskStatusChangeEvent.java  |    2 +-
 .../event/TaskStatusChangeRequestEvent.java     |    2 +-
 .../airavata/model/process/ProcessModel.java    |    2 +-
 .../ComputationalResourceSchedulingModel.java   |    2 +-
 .../airavata/model/security/AuthzToken.java     |    2 +-
 .../airavata/model/status/ExperimentStatus.java |    2 +-
 .../apache/airavata/model/status/JobStatus.java |    2 +-
 .../airavata/model/status/ProcessStatus.java    |    2 +-
 .../airavata/model/status/TaskStatus.java       |    2 +-
 .../model/task/DataStagingTaskModel.java        |    2 +-
 .../model/task/EnvironmentSetupTaskModel.java   |    2 +-
 .../model/task/JobSubmissionTaskModel.java      |    2 +-
 .../airavata/model/task/MonitorTaskModel.java   |    2 +-
 .../apache/airavata/model/task/TaskModel.java   |    2 +-
 .../airavata/model/workspace/Gateway.java       |    2 +-
 .../apache/airavata/model/workspace/Group.java  |    2 +-
 .../airavata/model/workspace/Project.java       |    2 +-
 .../apache/airavata/model/workspace/User.java   |    2 +-
 .../airavata-apis/airavata_api.thrift           |   19 +-
 91 files changed, 3136 insertions(+), 84 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/airavata/blob/471ae44a/airavata-api/airavata-api-server/src/main/java/org/apache/airavata/api/server/handler/AiravataServerHandler.java
----------------------------------------------------------------------
diff --git a/airavata-api/airavata-api-server/src/main/java/org/apache/airavata/api/server/handler/AiravataServerHandler.java b/airavata-api/airavata-api-server/src/main/java/org/apache/airavata/api/server/handler/AiravataServerHandler.java
index 8ab3466..c9b5d39 100644
--- a/airavata-api/airavata-api-server/src/main/java/org/apache/airavata/api/server/handler/AiravataServerHandler.java
+++ b/airavata-api/airavata-api-server/src/main/java/org/apache/airavata/api/server/handler/AiravataServerHandler.java
@@ -112,6 +112,27 @@ public class AiravataServerHandler implements Airavata.Iface {
         return airavata_apiConstants.AIRAVATA_API_VERSION;
     }
 
+    /**
+     * Verify if User Exists within Airavata.
+     *
+     * @param authzToken
+     * @param gatewayId
+     * @param userName
+     * @return true/false
+     */
+    @Override
+    public boolean isUserExists(AuthzToken authzToken, String gatewayId, String userName) throws InvalidRequestException, AiravataClientException, AiravataSystemException, AuthorizationException, TException {
+        try {
+            return ExpCatResourceUtils.isUserExist(userName, gatewayId);
+        } catch (RegistryException e) {
+            logger.error("Error while verifying user", e);
+            AiravataSystemException exception = new AiravataSystemException();
+            exception.setAiravataErrorType(AiravataErrorType.INTERNAL_ERROR);
+            exception.setMessage("Error while verifying user. More info : " + e.getMessage());
+            throw exception;
+        }
+    }
+
     @Override
     @SecurityCheck
     public String addGateway(AuthzToken authzToken, Gateway gateway) throws InvalidRequestException,

http://git-wip-us.apache.org/repos/asf/airavata/blob/471ae44a/airavata-api/airavata-api-stubs/src/main/java/org/apache/airavata/api/Airavata.java
----------------------------------------------------------------------
diff --git a/airavata-api/airavata-api-stubs/src/main/java/org/apache/airavata/api/Airavata.java b/airavata-api/airavata-api-stubs/src/main/java/org/apache/airavata/api/Airavata.java
index e7e7e78..5ed5cb0 100644
--- a/airavata-api/airavata-api-stubs/src/main/java/org/apache/airavata/api/Airavata.java
+++ b/airavata-api/airavata-api-stubs/src/main/java/org/apache/airavata/api/Airavata.java
@@ -51,7 +51,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 @SuppressWarnings({"cast", "rawtypes", "serial", "unchecked"})
-@Generated(value = "Autogenerated by Thrift Compiler (0.9.3)", date = "2016-03-04")
+@Generated(value = "Autogenerated by Thrift Compiler (0.9.3)", date = "2016-03-11")
 public class Airavata {
 
   public interface Iface {
@@ -65,6 +65,23 @@ public class Airavata {
     public String getAPIVersion(org.apache.airavata.model.security.AuthzToken authzToken) throws org.apache.airavata.model.error.InvalidRequestException, org.apache.airavata.model.error.AiravataClientException, org.apache.airavata.model.error.AiravataSystemException, org.apache.airavata.model.error.AuthorizationException, org.apache.thrift.TException;
 
     /**
+     * Verify if User Exists within Airavata.
+     * 
+     * @param gatewayId
+     * 
+     *  @param userName
+     * 
+     * @return true/false
+     * 
+     * 
+     * 
+     * @param authzToken
+     * @param gatewayId
+     * @param userName
+     */
+    public boolean isUserExists(org.apache.airavata.model.security.AuthzToken authzToken, String gatewayId, String userName) throws org.apache.airavata.model.error.InvalidRequestException, org.apache.airavata.model.error.AiravataClientException, org.apache.airavata.model.error.AiravataSystemException, org.apache.airavata.model.error.AuthorizationException, org.apache.thrift.TException;
+
+    /**
      * Register a Gateway with Airavata.
      * 
      * @param gateway
@@ -2647,6 +2664,8 @@ public class Airavata {
 
     public void getAPIVersion(org.apache.airavata.model.security.AuthzToken authzToken, org.apache.thrift.async.AsyncMethodCallback resultHandler) throws org.apache.thrift.TException;
 
+    public void isUserExists(org.apache.airavata.model.security.AuthzToken authzToken, String gatewayId, String userName, org.apache.thrift.async.AsyncMethodCallback resultHandler) throws org.apache.thrift.TException;
+
     public void addGateway(org.apache.airavata.model.security.AuthzToken authzToken, org.apache.airavata.model.workspace.Gateway gateway, org.apache.thrift.async.AsyncMethodCallback resultHandler) throws org.apache.thrift.TException;
 
     public void updateGateway(org.apache.airavata.model.security.AuthzToken authzToken, String gatewayId, org.apache.airavata.model.workspace.Gateway updatedGateway, org.apache.thrift.async.AsyncMethodCallback resultHandler) throws org.apache.thrift.TException;
@@ -2980,6 +2999,43 @@ public class Airavata {
       throw new org.apache.thrift.TApplicationException(org.apache.thrift.TApplicationException.MISSING_RESULT, "getAPIVersion failed: unknown result");
     }
 
+    public boolean isUserExists(org.apache.airavata.model.security.AuthzToken authzToken, String gatewayId, String userName) throws org.apache.airavata.model.error.InvalidRequestException, org.apache.airavata.model.error.AiravataClientException, org.apache.airavata.model.error.AiravataSystemException, org.apache.airavata.model.error.AuthorizationException, org.apache.thrift.TException
+    {
+      send_isUserExists(authzToken, gatewayId, userName);
+      return recv_isUserExists();
+    }
+
+    public void send_isUserExists(org.apache.airavata.model.security.AuthzToken authzToken, String gatewayId, String userName) throws org.apache.thrift.TException
+    {
+      isUserExists_args args = new isUserExists_args();
+      args.setAuthzToken(authzToken);
+      args.setGatewayId(gatewayId);
+      args.setUserName(userName);
+      sendBase("isUserExists", args);
+    }
+
+    public boolean recv_isUserExists() throws org.apache.airavata.model.error.InvalidRequestException, org.apache.airavata.model.error.AiravataClientException, org.apache.airavata.model.error.AiravataSystemException, org.apache.airavata.model.error.AuthorizationException, org.apache.thrift.TException
+    {
+      isUserExists_result result = new isUserExists_result();
+      receiveBase(result, "isUserExists");
+      if (result.isSetSuccess()) {
+        return result.success;
+      }
+      if (result.ire != null) {
+        throw result.ire;
+      }
+      if (result.ace != null) {
+        throw result.ace;
+      }
+      if (result.ase != null) {
+        throw result.ase;
+      }
+      if (result.ae != null) {
+        throw result.ae;
+      }
+      throw new org.apache.thrift.TApplicationException(org.apache.thrift.TApplicationException.MISSING_RESULT, "isUserExists failed: unknown result");
+    }
+
     public String addGateway(org.apache.airavata.model.security.AuthzToken authzToken, org.apache.airavata.model.workspace.Gateway gateway) throws org.apache.airavata.model.error.InvalidRequestException, org.apache.airavata.model.error.AiravataClientException, org.apache.airavata.model.error.AiravataSystemException, org.apache.airavata.model.error.AuthorizationException, org.apache.thrift.TException
     {
       send_addGateway(authzToken, gateway);
@@ -8099,6 +8155,44 @@ public class Airavata {
       }
     }
 
+    public void isUserExists(org.apache.airavata.model.security.AuthzToken authzToken, String gatewayId, String userName, org.apache.thrift.async.AsyncMethodCallback resultHandler) throws org.apache.thrift.TException {
+      checkReady();
+      isUserExists_call method_call = new isUserExists_call(authzToken, gatewayId, userName, resultHandler, this, ___protocolFactory, ___transport);
+      this.___currentMethod = method_call;
+      ___manager.call(method_call);
+    }
+
+    public static class isUserExists_call extends org.apache.thrift.async.TAsyncMethodCall {
+      private org.apache.airavata.model.security.AuthzToken authzToken;
+      private String gatewayId;
+      private String userName;
+      public isUserExists_call(org.apache.airavata.model.security.AuthzToken authzToken, String gatewayId, String userName, org.apache.thrift.async.AsyncMethodCallback resultHandler, org.apache.thrift.async.TAsyncClient client, org.apache.thrift.protocol.TProtocolFactory protocolFactory, org.apache.thrift.transport.TNonblockingTransport transport) throws org.apache.thrift.TException {
+        super(client, protocolFactory, transport, resultHandler, false);
+        this.authzToken = authzToken;
+        this.gatewayId = gatewayId;
+        this.userName = userName;
+      }
+
+      public void write_args(org.apache.thrift.protocol.TProtocol prot) throws org.apache.thrift.TException {
+        prot.writeMessageBegin(new org.apache.thrift.protocol.TMessage("isUserExists", org.apache.thrift.protocol.TMessageType.CALL, 0));
+        isUserExists_args args = new isUserExists_args();
+        args.setAuthzToken(authzToken);
+        args.setGatewayId(gatewayId);
+        args.setUserName(userName);
+        args.write(prot);
+        prot.writeMessageEnd();
+      }
+
+      public boolean getResult() throws org.apache.airavata.model.error.InvalidRequestException, org.apache.airavata.model.error.AiravataClientException, org.apache.airavata.model.error.AiravataSystemException, org.apache.airavata.model.error.AuthorizationException, org.apache.thrift.TException {
+        if (getState() != org.apache.thrift.async.TAsyncMethodCall.State.RESPONSE_READ) {
+          throw new IllegalStateException("Method call not finished!");
+        }
+        org.apache.thrift.transport.TMemoryInputTransport memoryTransport = new org.apache.thrift.transport.TMemoryInputTransport(getFrameBuffer().array());
+        org.apache.thrift.protocol.TProtocol prot = client.getProtocolFactory().getProtocol(memoryTransport);
+        return (new Client(prot)).recv_isUserExists();
+      }
+    }
+
     public void addGateway(org.apache.airavata.model.security.AuthzToken authzToken, org.apache.airavata.model.workspace.Gateway gateway, org.apache.thrift.async.AsyncMethodCallback resultHandler) throws org.apache.thrift.TException {
       checkReady();
       addGateway_call method_call = new addGateway_call(authzToken, gateway, resultHandler, this, ___protocolFactory, ___transport);
@@ -13300,6 +13394,7 @@ public class Airavata {
 
     private static <I extends Iface> Map<String,  org.apache.thrift.ProcessFunction<I, ? extends  org.apache.thrift.TBase>> getProcessMap(Map<String,  org.apache.thrift.ProcessFunction<I, ? extends  org.apache.thrift.TBase>> processMap) {
       processMap.put("getAPIVersion", new getAPIVersion());
+      processMap.put("isUserExists", new isUserExists());
       processMap.put("addGateway", new addGateway());
       processMap.put("updateGateway", new updateGateway());
       processMap.put("getGateway", new getGateway());
@@ -13471,6 +13566,37 @@ public class Airavata {
       }
     }
 
+    public static class isUserExists<I extends Iface> extends org.apache.thrift.ProcessFunction<I, isUserExists_args> {
+      public isUserExists() {
+        super("isUserExists");
+      }
+
+      public isUserExists_args getEmptyArgsInstance() {
+        return new isUserExists_args();
+      }
+
+      protected boolean isOneway() {
+        return false;
+      }
+
+      public isUserExists_result getResult(I iface, isUserExists_args args) throws org.apache.thrift.TException {
+        isUserExists_result result = new isUserExists_result();
+        try {
+          result.success = iface.isUserExists(args.authzToken, args.gatewayId, args.userName);
+          result.setSuccessIsSet(true);
+        } catch (org.apache.airavata.model.error.InvalidRequestException ire) {
+          result.ire = ire;
+        } catch (org.apache.airavata.model.error.AiravataClientException ace) {
+          result.ace = ace;
+        } catch (org.apache.airavata.model.error.AiravataSystemException ase) {
+          result.ase = ase;
+        } catch (org.apache.airavata.model.error.AuthorizationException ae) {
+          result.ae = ae;
+        }
+        return result;
+      }
+    }
+
     public static class addGateway<I extends Iface> extends org.apache.thrift.ProcessFunction<I, addGateway_args> {
       public addGateway() {
         super("addGateway");
@@ -17677,6 +17803,7 @@ public class Airavata {
 
     private static <I extends AsyncIface> Map<String,  org.apache.thrift.AsyncProcessFunction<I, ? extends  org.apache.thrift.TBase,?>> getProcessMap(Map<String,  org.apache.thrift.AsyncProcessFunction<I, ? extends  org.apache.thrift.TBase, ?>> processMap) {
       processMap.put("getAPIVersion", new getAPIVersion());
+      processMap.put("isUserExists", new isUserExists());
       processMap.put("addGateway", new addGateway());
       processMap.put("updateGateway", new updateGateway());
       processMap.put("getGateway", new getGateway());
@@ -17890,6 +18017,79 @@ public class Airavata {
       }
     }
 
+    public static class isUserExists<I extends AsyncIface> extends org.apache.thrift.AsyncProcessFunction<I, isUserExists_args, Boolean> {
+      public isUserExists() {
+        super("isUserExists");
+      }
+
+      public isUserExists_args getEmptyArgsInstance() {
+        return new isUserExists_args();
+      }
+
+      public AsyncMethodCallback<Boolean> getResultHandler(final AsyncFrameBuffer fb, final int seqid) {
+        final org.apache.thrift.AsyncProcessFunction fcall = this;
+        return new AsyncMethodCallback<Boolean>() { 
+          public void onComplete(Boolean o) {
+            isUserExists_result result = new isUserExists_result();
+            result.success = o;
+            result.setSuccessIsSet(true);
+            try {
+              fcall.sendResponse(fb,result, org.apache.thrift.protocol.TMessageType.REPLY,seqid);
+              return;
+            } catch (Exception e) {
+              LOGGER.error("Exception writing to internal frame buffer", e);
+            }
+            fb.close();
+          }
+          public void onError(Exception e) {
+            byte msgType = org.apache.thrift.protocol.TMessageType.REPLY;
+            org.apache.thrift.TBase msg;
+            isUserExists_result result = new isUserExists_result();
+            if (e instanceof org.apache.airavata.model.error.InvalidRequestException) {
+                        result.ire = (org.apache.airavata.model.error.InvalidRequestException) e;
+                        result.setIreIsSet(true);
+                        msg = result;
+            }
+            else             if (e instanceof org.apache.airavata.model.error.AiravataClientException) {
+                        result.ace = (org.apache.airavata.model.error.AiravataClientException) e;
+                        result.setAceIsSet(true);
+                        msg = result;
+            }
+            else             if (e instanceof org.apache.airavata.model.error.AiravataSystemException) {
+                        result.ase = (org.apache.airavata.model.error.AiravataSystemException) e;
+                        result.setAseIsSet(true);
+                        msg = result;
+            }
+            else             if (e instanceof org.apache.airavata.model.error.AuthorizationException) {
+                        result.ae = (org.apache.airavata.model.error.AuthorizationException) e;
+                        result.setAeIsSet(true);
+                        msg = result;
+            }
+             else 
+            {
+              msgType = org.apache.thrift.protocol.TMessageType.EXCEPTION;
+              msg = (org.apache.thrift.TBase)new org.apache.thrift.TApplicationException(org.apache.thrift.TApplicationException.INTERNAL_ERROR, e.getMessage());
+            }
+            try {
+              fcall.sendResponse(fb,msg,msgType,seqid);
+              return;
+            } catch (Exception ex) {
+              LOGGER.error("Exception writing to internal frame buffer", ex);
+            }
+            fb.close();
+          }
+        };
+      }
+
+      protected boolean isOneway() {
+        return false;
+      }
+
+      public void start(I iface, isUserExists_args args, org.apache.thrift.async.AsyncMethodCallback<Boolean> resultHandler) throws TException {
+        iface.isUserExists(args.authzToken, args.gatewayId, args.userName,resultHandler);
+      }
+    }
+
     public static class addGateway<I extends AsyncIface> extends org.apache.thrift.AsyncProcessFunction<I, addGateway_args, String> {
       public addGateway() {
         super("addGateway");
@@ -29032,6 +29232,1356 @@ public class Airavata {
 
   }
 
+  public static class isUserExists_args implements org.apache.thrift.TBase<isUserExists_args, isUserExists_args._Fields>, java.io.Serializable, Cloneable, Comparable<isUserExists_args>   {
+    private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("isUserExists_args");
+
+    private static final org.apache.thrift.protocol.TField AUTHZ_TOKEN_FIELD_DESC = new org.apache.thrift.protocol.TField("authzToken", org.apache.thrift.protocol.TType.STRUCT, (short)1);
+    private static final org.apache.thrift.protocol.TField GATEWAY_ID_FIELD_DESC = new org.apache.thrift.protocol.TField("gatewayId", org.apache.thrift.protocol.TType.STRING, (short)2);
+    private static final org.apache.thrift.protocol.TField USER_NAME_FIELD_DESC = new org.apache.thrift.protocol.TField("userName", org.apache.thrift.protocol.TType.STRING, (short)3);
+
+    private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = new HashMap<Class<? extends IScheme>, SchemeFactory>();
+    static {
+      schemes.put(StandardScheme.class, new isUserExists_argsStandardSchemeFactory());
+      schemes.put(TupleScheme.class, new isUserExists_argsTupleSchemeFactory());
+    }
+
+    public org.apache.airavata.model.security.AuthzToken authzToken; // required
+    public String gatewayId; // required
+    public String userName; // required
+
+    /** The set of fields this struct contains, along with convenience methods for finding and manipulating them. */
+    public enum _Fields implements org.apache.thrift.TFieldIdEnum {
+      AUTHZ_TOKEN((short)1, "authzToken"),
+      GATEWAY_ID((short)2, "gatewayId"),
+      USER_NAME((short)3, "userName");
+
+      private static final Map<String, _Fields> byName = new HashMap<String, _Fields>();
+
+      static {
+        for (_Fields field : EnumSet.allOf(_Fields.class)) {
+          byName.put(field.getFieldName(), field);
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, or null if its not found.
+       */
+      public static _Fields findByThriftId(int fieldId) {
+        switch(fieldId) {
+          case 1: // AUTHZ_TOKEN
+            return AUTHZ_TOKEN;
+          case 2: // GATEWAY_ID
+            return GATEWAY_ID;
+          case 3: // USER_NAME
+            return USER_NAME;
+          default:
+            return null;
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, throwing an exception
+       * if it is not found.
+       */
+      public static _Fields findByThriftIdOrThrow(int fieldId) {
+        _Fields fields = findByThriftId(fieldId);
+        if (fields == null) throw new IllegalArgumentException("Field " + fieldId + " doesn't exist!");
+        return fields;
+      }
+
+      /**
+       * Find the _Fields constant that matches name, or null if its not found.
+       */
+      public static _Fields findByName(String name) {
+        return byName.get(name);
+      }
+
+      private final short _thriftId;
+      private final String _fieldName;
+
+      _Fields(short thriftId, String fieldName) {
+        _thriftId = thriftId;
+        _fieldName = fieldName;
+      }
+
+      public short getThriftFieldId() {
+        return _thriftId;
+      }
+
+      public String getFieldName() {
+        return _fieldName;
+      }
+    }
+
+    // isset id assignments
+    public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> metaDataMap;
+    static {
+      Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
+      tmpMap.put(_Fields.AUTHZ_TOKEN, new org.apache.thrift.meta_data.FieldMetaData("authzToken", org.apache.thrift.TFieldRequirementType.REQUIRED, 
+          new org.apache.thrift.meta_data.StructMetaData(org.apache.thrift.protocol.TType.STRUCT, org.apache.airavata.model.security.AuthzToken.class)));
+      tmpMap.put(_Fields.GATEWAY_ID, new org.apache.thrift.meta_data.FieldMetaData("gatewayId", org.apache.thrift.TFieldRequirementType.REQUIRED, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRING)));
+      tmpMap.put(_Fields.USER_NAME, new org.apache.thrift.meta_data.FieldMetaData("userName", org.apache.thrift.TFieldRequirementType.REQUIRED, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRING)));
+      metaDataMap = Collections.unmodifiableMap(tmpMap);
+      org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(isUserExists_args.class, metaDataMap);
+    }
+
+    public isUserExists_args() {
+    }
+
+    public isUserExists_args(
+      org.apache.airavata.model.security.AuthzToken authzToken,
+      String gatewayId,
+      String userName)
+    {
+      this();
+      this.authzToken = authzToken;
+      this.gatewayId = gatewayId;
+      this.userName = userName;
+    }
+
+    /**
+     * Performs a deep copy on <i>other</i>.
+     */
+    public isUserExists_args(isUserExists_args other) {
+      if (other.isSetAuthzToken()) {
+        this.authzToken = new org.apache.airavata.model.security.AuthzToken(other.authzToken);
+      }
+      if (other.isSetGatewayId()) {
+        this.gatewayId = other.gatewayId;
+      }
+      if (other.isSetUserName()) {
+        this.userName = other.userName;
+      }
+    }
+
+    public isUserExists_args deepCopy() {
+      return new isUserExists_args(this);
+    }
+
+    @Override
+    public void clear() {
+      this.authzToken = null;
+      this.gatewayId = null;
+      this.userName = null;
+    }
+
+    public org.apache.airavata.model.security.AuthzToken getAuthzToken() {
+      return this.authzToken;
+    }
+
+    public isUserExists_args setAuthzToken(org.apache.airavata.model.security.AuthzToken authzToken) {
+      this.authzToken = authzToken;
+      return this;
+    }
+
+    public void unsetAuthzToken() {
+      this.authzToken = null;
+    }
+
+    /** Returns true if field authzToken is set (has been assigned a value) and false otherwise */
+    public boolean isSetAuthzToken() {
+      return this.authzToken != null;
+    }
+
+    public void setAuthzTokenIsSet(boolean value) {
+      if (!value) {
+        this.authzToken = null;
+      }
+    }
+
+    public String getGatewayId() {
+      return this.gatewayId;
+    }
+
+    public isUserExists_args setGatewayId(String gatewayId) {
+      this.gatewayId = gatewayId;
+      return this;
+    }
+
+    public void unsetGatewayId() {
+      this.gatewayId = null;
+    }
+
+    /** Returns true if field gatewayId is set (has been assigned a value) and false otherwise */
+    public boolean isSetGatewayId() {
+      return this.gatewayId != null;
+    }
+
+    public void setGatewayIdIsSet(boolean value) {
+      if (!value) {
+        this.gatewayId = null;
+      }
+    }
+
+    public String getUserName() {
+      return this.userName;
+    }
+
+    public isUserExists_args setUserName(String userName) {
+      this.userName = userName;
+      return this;
+    }
+
+    public void unsetUserName() {
+      this.userName = null;
+    }
+
+    /** Returns true if field userName is set (has been assigned a value) and false otherwise */
+    public boolean isSetUserName() {
+      return this.userName != null;
+    }
+
+    public void setUserNameIsSet(boolean value) {
+      if (!value) {
+        this.userName = null;
+      }
+    }
+
+    public void setFieldValue(_Fields field, Object value) {
+      switch (field) {
+      case AUTHZ_TOKEN:
+        if (value == null) {
+          unsetAuthzToken();
+        } else {
+          setAuthzToken((org.apache.airavata.model.security.AuthzToken)value);
+        }
+        break;
+
+      case GATEWAY_ID:
+        if (value == null) {
+          unsetGatewayId();
+        } else {
+          setGatewayId((String)value);
+        }
+        break;
+
+      case USER_NAME:
+        if (value == null) {
+          unsetUserName();
+        } else {
+          setUserName((String)value);
+        }
+        break;
+
+      }
+    }
+
+    public Object getFieldValue(_Fields field) {
+      switch (field) {
+      case AUTHZ_TOKEN:
+        return getAuthzToken();
+
+      case GATEWAY_ID:
+        return getGatewayId();
+
+      case USER_NAME:
+        return getUserName();
+
+      }
+      throw new IllegalStateException();
+    }
+
+    /** Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise */
+    public boolean isSet(_Fields field) {
+      if (field == null) {
+        throw new IllegalArgumentException();
+      }
+
+      switch (field) {
+      case AUTHZ_TOKEN:
+        return isSetAuthzToken();
+      case GATEWAY_ID:
+        return isSetGatewayId();
+      case USER_NAME:
+        return isSetUserName();
+      }
+      throw new IllegalStateException();
+    }
+
+    @Override
+    public boolean equals(Object that) {
+      if (that == null)
+        return false;
+      if (that instanceof isUserExists_args)
+        return this.equals((isUserExists_args)that);
+      return false;
+    }
+
+    public boolean equals(isUserExists_args that) {
+      if (that == null)
+        return false;
+
+      boolean this_present_authzToken = true && this.isSetAuthzToken();
+      boolean that_present_authzToken = true && that.isSetAuthzToken();
+      if (this_present_authzToken || that_present_authzToken) {
+        if (!(this_present_authzToken && that_present_authzToken))
+          return false;
+        if (!this.authzToken.equals(that.authzToken))
+          return false;
+      }
+
+      boolean this_present_gatewayId = true && this.isSetGatewayId();
+      boolean that_present_gatewayId = true && that.isSetGatewayId();
+      if (this_present_gatewayId || that_present_gatewayId) {
+        if (!(this_present_gatewayId && that_present_gatewayId))
+          return false;
+        if (!this.gatewayId.equals(that.gatewayId))
+          return false;
+      }
+
+      boolean this_present_userName = true && this.isSetUserName();
+      boolean that_present_userName = true && that.isSetUserName();
+      if (this_present_userName || that_present_userName) {
+        if (!(this_present_userName && that_present_userName))
+          return false;
+        if (!this.userName.equals(that.userName))
+          return false;
+      }
+
+      return true;
+    }
+
+    @Override
+    public int hashCode() {
+      List<Object> list = new ArrayList<Object>();
+
+      boolean present_authzToken = true && (isSetAuthzToken());
+      list.add(present_authzToken);
+      if (present_authzToken)
+        list.add(authzToken);
+
+      boolean present_gatewayId = true && (isSetGatewayId());
+      list.add(present_gatewayId);
+      if (present_gatewayId)
+        list.add(gatewayId);
+
+      boolean present_userName = true && (isSetUserName());
+      list.add(present_userName);
+      if (present_userName)
+        list.add(userName);
+
+      return list.hashCode();
+    }
+
+    @Override
+    public int compareTo(isUserExists_args other) {
+      if (!getClass().equals(other.getClass())) {
+        return getClass().getName().compareTo(other.getClass().getName());
+      }
+
+      int lastComparison = 0;
+
+      lastComparison = Boolean.valueOf(isSetAuthzToken()).compareTo(other.isSetAuthzToken());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetAuthzToken()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.authzToken, other.authzToken);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      lastComparison = Boolean.valueOf(isSetGatewayId()).compareTo(other.isSetGatewayId());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetGatewayId()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.gatewayId, other.gatewayId);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      lastComparison = Boolean.valueOf(isSetUserName()).compareTo(other.isSetUserName());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetUserName()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.userName, other.userName);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      return 0;
+    }
+
+    public _Fields fieldForId(int fieldId) {
+      return _Fields.findByThriftId(fieldId);
+    }
+
+    public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException {
+      schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
+    }
+
+    public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException {
+      schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
+    }
+
+    @Override
+    public String toString() {
+      StringBuilder sb = new StringBuilder("isUserExists_args(");
+      boolean first = true;
+
+      sb.append("authzToken:");
+      if (this.authzToken == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.authzToken);
+      }
+      first = false;
+      if (!first) sb.append(", ");
+      sb.append("gatewayId:");
+      if (this.gatewayId == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.gatewayId);
+      }
+      first = false;
+      if (!first) sb.append(", ");
+      sb.append("userName:");
+      if (this.userName == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.userName);
+      }
+      first = false;
+      sb.append(")");
+      return sb.toString();
+    }
+
+    public void validate() throws org.apache.thrift.TException {
+      // check for required fields
+      if (authzToken == null) {
+        throw new org.apache.thrift.protocol.TProtocolException("Required field 'authzToken' was not present! Struct: " + toString());
+      }
+      if (gatewayId == null) {
+        throw new org.apache.thrift.protocol.TProtocolException("Required field 'gatewayId' was not present! Struct: " + toString());
+      }
+      if (userName == null) {
+        throw new org.apache.thrift.protocol.TProtocolException("Required field 'userName' was not present! Struct: " + toString());
+      }
+      // check for sub-struct validity
+      if (authzToken != null) {
+        authzToken.validate();
+      }
+    }
+
+    private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException {
+      try {
+        write(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(out)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private void readObject(java.io.ObjectInputStream in) throws java.io.IOException, ClassNotFoundException {
+      try {
+        read(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(in)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private static class isUserExists_argsStandardSchemeFactory implements SchemeFactory {
+      public isUserExists_argsStandardScheme getScheme() {
+        return new isUserExists_argsStandardScheme();
+      }
+    }
+
+    private static class isUserExists_argsStandardScheme extends StandardScheme<isUserExists_args> {
+
+      public void read(org.apache.thrift.protocol.TProtocol iprot, isUserExists_args struct) throws org.apache.thrift.TException {
+        org.apache.thrift.protocol.TField schemeField;
+        iprot.readStructBegin();
+        while (true)
+        {
+          schemeField = iprot.readFieldBegin();
+          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
+            break;
+          }
+          switch (schemeField.id) {
+            case 1: // AUTHZ_TOKEN
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRUCT) {
+                struct.authzToken = new org.apache.airavata.model.security.AuthzToken();
+                struct.authzToken.read(iprot);
+                struct.setAuthzTokenIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            case 2: // GATEWAY_ID
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
+                struct.gatewayId = iprot.readString();
+                struct.setGatewayIdIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            case 3: // USER_NAME
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
+                struct.userName = iprot.readString();
+                struct.setUserNameIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            default:
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+          }
+          iprot.readFieldEnd();
+        }
+        iprot.readStructEnd();
+
+        // check for required fields of primitive type, which can't be checked in the validate method
+        struct.validate();
+      }
+
+      public void write(org.apache.thrift.protocol.TProtocol oprot, isUserExists_args struct) throws org.apache.thrift.TException {
+        struct.validate();
+
+        oprot.writeStructBegin(STRUCT_DESC);
+        if (struct.authzToken != null) {
+          oprot.writeFieldBegin(AUTHZ_TOKEN_FIELD_DESC);
+          struct.authzToken.write(oprot);
+          oprot.writeFieldEnd();
+        }
+        if (struct.gatewayId != null) {
+          oprot.writeFieldBegin(GATEWAY_ID_FIELD_DESC);
+          oprot.writeString(struct.gatewayId);
+          oprot.writeFieldEnd();
+        }
+        if (struct.userName != null) {
+          oprot.writeFieldBegin(USER_NAME_FIELD_DESC);
+          oprot.writeString(struct.userName);
+          oprot.writeFieldEnd();
+        }
+        oprot.writeFieldStop();
+        oprot.writeStructEnd();
+      }
+
+    }
+
+    private static class isUserExists_argsTupleSchemeFactory implements SchemeFactory {
+      public isUserExists_argsTupleScheme getScheme() {
+        return new isUserExists_argsTupleScheme();
+      }
+    }
+
+    private static class isUserExists_argsTupleScheme extends TupleScheme<isUserExists_args> {
+
+      @Override
+      public void write(org.apache.thrift.protocol.TProtocol prot, isUserExists_args struct) throws org.apache.thrift.TException {
+        TTupleProtocol oprot = (TTupleProtocol) prot;
+        struct.authzToken.write(oprot);
+        oprot.writeString(struct.gatewayId);
+        oprot.writeString(struct.userName);
+      }
+
+      @Override
+      public void read(org.apache.thrift.protocol.TProtocol prot, isUserExists_args struct) throws org.apache.thrift.TException {
+        TTupleProtocol iprot = (TTupleProtocol) prot;
+        struct.authzToken = new org.apache.airavata.model.security.AuthzToken();
+        struct.authzToken.read(iprot);
+        struct.setAuthzTokenIsSet(true);
+        struct.gatewayId = iprot.readString();
+        struct.setGatewayIdIsSet(true);
+        struct.userName = iprot.readString();
+        struct.setUserNameIsSet(true);
+      }
+    }
+
+  }
+
+  public static class isUserExists_result implements org.apache.thrift.TBase<isUserExists_result, isUserExists_result._Fields>, java.io.Serializable, Cloneable, Comparable<isUserExists_result>   {
+    private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("isUserExists_result");
+
+    private static final org.apache.thrift.protocol.TField SUCCESS_FIELD_DESC = new org.apache.thrift.protocol.TField("success", org.apache.thrift.protocol.TType.BOOL, (short)0);
+    private static final org.apache.thrift.protocol.TField IRE_FIELD_DESC = new org.apache.thrift.protocol.TField("ire", org.apache.thrift.protocol.TType.STRUCT, (short)1);
+    private static final org.apache.thrift.protocol.TField ACE_FIELD_DESC = new org.apache.thrift.protocol.TField("ace", org.apache.thrift.protocol.TType.STRUCT, (short)2);
+    private static final org.apache.thrift.protocol.TField ASE_FIELD_DESC = new org.apache.thrift.protocol.TField("ase", org.apache.thrift.protocol.TType.STRUCT, (short)3);
+    private static final org.apache.thrift.protocol.TField AE_FIELD_DESC = new org.apache.thrift.protocol.TField("ae", org.apache.thrift.protocol.TType.STRUCT, (short)4);
+
+    private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = new HashMap<Class<? extends IScheme>, SchemeFactory>();
+    static {
+      schemes.put(StandardScheme.class, new isUserExists_resultStandardSchemeFactory());
+      schemes.put(TupleScheme.class, new isUserExists_resultTupleSchemeFactory());
+    }
+
+    public boolean success; // required
+    public org.apache.airavata.model.error.InvalidRequestException ire; // required
+    public org.apache.airavata.model.error.AiravataClientException ace; // required
+    public org.apache.airavata.model.error.AiravataSystemException ase; // required
+    public org.apache.airavata.model.error.AuthorizationException ae; // required
+
+    /** The set of fields this struct contains, along with convenience methods for finding and manipulating them. */
+    public enum _Fields implements org.apache.thrift.TFieldIdEnum {
+      SUCCESS((short)0, "success"),
+      IRE((short)1, "ire"),
+      ACE((short)2, "ace"),
+      ASE((short)3, "ase"),
+      AE((short)4, "ae");
+
+      private static final Map<String, _Fields> byName = new HashMap<String, _Fields>();
+
+      static {
+        for (_Fields field : EnumSet.allOf(_Fields.class)) {
+          byName.put(field.getFieldName(), field);
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, or null if its not found.
+       */
+      public static _Fields findByThriftId(int fieldId) {
+        switch(fieldId) {
+          case 0: // SUCCESS
+            return SUCCESS;
+          case 1: // IRE
+            return IRE;
+          case 2: // ACE
+            return ACE;
+          case 3: // ASE
+            return ASE;
+          case 4: // AE
+            return AE;
+          default:
+            return null;
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, throwing an exception
+       * if it is not found.
+       */
+      public static _Fields findByThriftIdOrThrow(int fieldId) {
+        _Fields fields = findByThriftId(fieldId);
+        if (fields == null) throw new IllegalArgumentException("Field " + fieldId + " doesn't exist!");
+        return fields;
+      }
+
+      /**
+       * Find the _Fields constant that matches name, or null if its not found.
+       */
+      public static _Fields findByName(String name) {
+        return byName.get(name);
+      }
+
+      private final short _thriftId;
+      private final String _fieldName;
+
+      _Fields(short thriftId, String fieldName) {
+        _thriftId = thriftId;
+        _fieldName = fieldName;
+      }
+
+      public short getThriftFieldId() {
+        return _thriftId;
+      }
+
+      public String getFieldName() {
+        return _fieldName;
+      }
+    }
+
+    // isset id assignments
+    private static final int __SUCCESS_ISSET_ID = 0;
+    private byte __isset_bitfield = 0;
+    public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> metaDataMap;
+    static {
+      Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
+      tmpMap.put(_Fields.SUCCESS, new org.apache.thrift.meta_data.FieldMetaData("success", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.BOOL)));
+      tmpMap.put(_Fields.IRE, new org.apache.thrift.meta_data.FieldMetaData("ire", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRUCT)));
+      tmpMap.put(_Fields.ACE, new org.apache.thrift.meta_data.FieldMetaData("ace", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRUCT)));
+      tmpMap.put(_Fields.ASE, new org.apache.thrift.meta_data.FieldMetaData("ase", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRUCT)));
+      tmpMap.put(_Fields.AE, new org.apache.thrift.meta_data.FieldMetaData("ae", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRUCT)));
+      metaDataMap = Collections.unmodifiableMap(tmpMap);
+      org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(isUserExists_result.class, metaDataMap);
+    }
+
+    public isUserExists_result() {
+    }
+
+    public isUserExists_result(
+      boolean success,
+      org.apache.airavata.model.error.InvalidRequestException ire,
+      org.apache.airavata.model.error.AiravataClientException ace,
+      org.apache.airavata.model.error.AiravataSystemException ase,
+      org.apache.airavata.model.error.AuthorizationException ae)
+    {
+      this();
+      this.success = success;
+      setSuccessIsSet(true);
+      this.ire = ire;
+      this.ace = ace;
+      this.ase = ase;
+      this.ae = ae;
+    }
+
+    /**
+     * Performs a deep copy on <i>other</i>.
+     */
+    public isUserExists_result(isUserExists_result other) {
+      __isset_bitfield = other.__isset_bitfield;
+      this.success = other.success;
+      if (other.isSetIre()) {
+        this.ire = new org.apache.airavata.model.error.InvalidRequestException(other.ire);
+      }
+      if (other.isSetAce()) {
+        this.ace = new org.apache.airavata.model.error.AiravataClientException(other.ace);
+      }
+      if (other.isSetAse()) {
+        this.ase = new org.apache.airavata.model.error.AiravataSystemException(other.ase);
+      }
+      if (other.isSetAe()) {
+        this.ae = new org.apache.airavata.model.error.AuthorizationException(other.ae);
+      }
+    }
+
+    public isUserExists_result deepCopy() {
+      return new isUserExists_result(this);
+    }
+
+    @Override
+    public void clear() {
+      setSuccessIsSet(false);
+      this.success = false;
+      this.ire = null;
+      this.ace = null;
+      this.ase = null;
+      this.ae = null;
+    }
+
+    public boolean isSuccess() {
+      return this.success;
+    }
+
+    public isUserExists_result setSuccess(boolean success) {
+      this.success = success;
+      setSuccessIsSet(true);
+      return this;
+    }
+
+    public void unsetSuccess() {
+      __isset_bitfield = EncodingUtils.clearBit(__isset_bitfield, __SUCCESS_ISSET_ID);
+    }
+
+    /** Returns true if field success is set (has been assigned a value) and false otherwise */
+    public boolean isSetSuccess() {
+      return EncodingUtils.testBit(__isset_bitfield, __SUCCESS_ISSET_ID);
+    }
+
+    public void setSuccessIsSet(boolean value) {
+      __isset_bitfield = EncodingUtils.setBit(__isset_bitfield, __SUCCESS_ISSET_ID, value);
+    }
+
+    public org.apache.airavata.model.error.InvalidRequestException getIre() {
+      return this.ire;
+    }
+
+    public isUserExists_result setIre(org.apache.airavata.model.error.InvalidRequestException ire) {
+      this.ire = ire;
+      return this;
+    }
+
+    public void unsetIre() {
+      this.ire = null;
+    }
+
+    /** Returns true if field ire is set (has been assigned a value) and false otherwise */
+    public boolean isSetIre() {
+      return this.ire != null;
+    }
+
+    public void setIreIsSet(boolean value) {
+      if (!value) {
+        this.ire = null;
+      }
+    }
+
+    public org.apache.airavata.model.error.AiravataClientException getAce() {
+      return this.ace;
+    }
+
+    public isUserExists_result setAce(org.apache.airavata.model.error.AiravataClientException ace) {
+      this.ace = ace;
+      return this;
+    }
+
+    public void unsetAce() {
+      this.ace = null;
+    }
+
+    /** Returns true if field ace is set (has been assigned a value) and false otherwise */
+    public boolean isSetAce() {
+      return this.ace != null;
+    }
+
+    public void setAceIsSet(boolean value) {
+      if (!value) {
+        this.ace = null;
+      }
+    }
+
+    public org.apache.airavata.model.error.AiravataSystemException getAse() {
+      return this.ase;
+    }
+
+    public isUserExists_result setAse(org.apache.airavata.model.error.AiravataSystemException ase) {
+      this.ase = ase;
+      return this;
+    }
+
+    public void unsetAse() {
+      this.ase = null;
+    }
+
+    /** Returns true if field ase is set (has been assigned a value) and false otherwise */
+    public boolean isSetAse() {
+      return this.ase != null;
+    }
+
+    public void setAseIsSet(boolean value) {
+      if (!value) {
+        this.ase = null;
+      }
+    }
+
+    public org.apache.airavata.model.error.AuthorizationException getAe() {
+      return this.ae;
+    }
+
+    public isUserExists_result setAe(org.apache.airavata.model.error.AuthorizationException ae) {
+      this.ae = ae;
+      return this;
+    }
+
+    public void unsetAe() {
+      this.ae = null;
+    }
+
+    /** Returns true if field ae is set (has been assigned a value) and false otherwise */
+    public boolean isSetAe() {
+      return this.ae != null;
+    }
+
+    public void setAeIsSet(boolean value) {
+      if (!value) {
+        this.ae = null;
+      }
+    }
+
+    public void setFieldValue(_Fields field, Object value) {
+      switch (field) {
+      case SUCCESS:
+        if (value == null) {
+          unsetSuccess();
+        } else {
+          setSuccess((Boolean)value);
+        }
+        break;
+
+      case IRE:
+        if (value == null) {
+          unsetIre();
+        } else {
+          setIre((org.apache.airavata.model.error.InvalidRequestException)value);
+        }
+        break;
+
+      case ACE:
+        if (value == null) {
+          unsetAce();
+        } else {
+          setAce((org.apache.airavata.model.error.AiravataClientException)value);
+        }
+        break;
+
+      case ASE:
+        if (value == null) {
+          unsetAse();
+        } else {
+          setAse((org.apache.airavata.model.error.AiravataSystemException)value);
+        }
+        break;
+
+      case AE:
+        if (value == null) {
+          unsetAe();
+        } else {
+          setAe((org.apache.airavata.model.error.AuthorizationException)value);
+        }
+        break;
+
+      }
+    }
+
+    public Object getFieldValue(_Fields field) {
+      switch (field) {
+      case SUCCESS:
+        return isSuccess();
+
+      case IRE:
+        return getIre();
+
+      case ACE:
+        return getAce();
+
+      case ASE:
+        return getAse();
+
+      case AE:
+        return getAe();
+
+      }
+      throw new IllegalStateException();
+    }
+
+    /** Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise */
+    public boolean isSet(_Fields field) {
+      if (field == null) {
+        throw new IllegalArgumentException();
+      }
+
+      switch (field) {
+      case SUCCESS:
+        return isSetSuccess();
+      case IRE:
+        return isSetIre();
+      case ACE:
+        return isSetAce();
+      case ASE:
+        return isSetAse();
+      case AE:
+        return isSetAe();
+      }
+      throw new IllegalStateException();
+    }
+
+    @Override
+    public boolean equals(Object that) {
+      if (that == null)
+        return false;
+      if (that instanceof isUserExists_result)
+        return this.equals((isUserExists_result)that);
+      return false;
+    }
+
+    public boolean equals(isUserExists_result that) {
+      if (that == null)
+        return false;
+
+      boolean this_present_success = true;
+      boolean that_present_success = true;
+      if (this_present_success || that_present_success) {
+        if (!(this_present_success && that_present_success))
+          return false;
+        if (this.success != that.success)
+          return false;
+      }
+
+      boolean this_present_ire = true && this.isSetIre();
+      boolean that_present_ire = true && that.isSetIre();
+      if (this_present_ire || that_present_ire) {
+        if (!(this_present_ire && that_present_ire))
+          return false;
+        if (!this.ire.equals(that.ire))
+          return false;
+      }
+
+      boolean this_present_ace = true && this.isSetAce();
+      boolean that_present_ace = true && that.isSetAce();
+      if (this_present_ace || that_present_ace) {
+        if (!(this_present_ace && that_present_ace))
+          return false;
+        if (!this.ace.equals(that.ace))
+          return false;
+      }
+
+      boolean this_present_ase = true && this.isSetAse();
+      boolean that_present_ase = true && that.isSetAse();
+      if (this_present_ase || that_present_ase) {
+        if (!(this_present_ase && that_present_ase))
+          return false;
+        if (!this.ase.equals(that.ase))
+          return false;
+      }
+
+      boolean this_present_ae = true && this.isSetAe();
+      boolean that_present_ae = true && that.isSetAe();
+      if (this_present_ae || that_present_ae) {
+        if (!(this_present_ae && that_present_ae))
+          return false;
+        if (!this.ae.equals(that.ae))
+          return false;
+      }
+
+      return true;
+    }
+
+    @Override
+    public int hashCode() {
+      List<Object> list = new ArrayList<Object>();
+
+      boolean present_success = true;
+      list.add(present_success);
+      if (present_success)
+        list.add(success);
+
+      boolean present_ire = true && (isSetIre());
+      list.add(present_ire);
+      if (present_ire)
+        list.add(ire);
+
+      boolean present_ace = true && (isSetAce());
+      list.add(present_ace);
+      if (present_ace)
+        list.add(ace);
+
+      boolean present_ase = true && (isSetAse());
+      list.add(present_ase);
+      if (present_ase)
+        list.add(ase);
+
+      boolean present_ae = true && (isSetAe());
+      list.add(present_ae);
+      if (present_ae)
+        list.add(ae);
+
+      return list.hashCode();
+    }
+
+    @Override
+    public int compareTo(isUserExists_result other) {
+      if (!getClass().equals(other.getClass())) {
+        return getClass().getName().compareTo(other.getClass().getName());
+      }
+
+      int lastComparison = 0;
+
+      lastComparison = Boolean.valueOf(isSetSuccess()).compareTo(other.isSetSuccess());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetSuccess()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.success, other.success);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      lastComparison = Boolean.valueOf(isSetIre()).compareTo(other.isSetIre());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetIre()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.ire, other.ire);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      lastComparison = Boolean.valueOf(isSetAce()).compareTo(other.isSetAce());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetAce()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.ace, other.ace);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      lastComparison = Boolean.valueOf(isSetAse()).compareTo(other.isSetAse());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetAse()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.ase, other.ase);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      lastComparison = Boolean.valueOf(isSetAe()).compareTo(other.isSetAe());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetAe()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.ae, other.ae);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      return 0;
+    }
+
+    public _Fields fieldForId(int fieldId) {
+      return _Fields.findByThriftId(fieldId);
+    }
+
+    public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException {
+      schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
+    }
+
+    public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException {
+      schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
+      }
+
+    @Override
+    public String toString() {
+      StringBuilder sb = new StringBuilder("isUserExists_result(");
+      boolean first = true;
+
+      sb.append("success:");
+      sb.append(this.success);
+      first = false;
+      if (!first) sb.append(", ");
+      sb.append("ire:");
+      if (this.ire == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.ire);
+      }
+      first = false;
+      if (!first) sb.append(", ");
+      sb.append("ace:");
+      if (this.ace == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.ace);
+      }
+      first = false;
+      if (!first) sb.append(", ");
+      sb.append("ase:");
+      if (this.ase == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.ase);
+      }
+      first = false;
+      if (!first) sb.append(", ");
+      sb.append("ae:");
+      if (this.ae == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.ae);
+      }
+      first = false;
+      sb.append(")");
+      return sb.toString();
+    }
+
+    public void validate() throws org.apache.thrift.TException {
+      // check for required fields
+      // check for sub-struct validity
+    }
+
+    private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException {
+      try {
+        write(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(out)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private void readObject(java.io.ObjectInputStream in) throws java.io.IOException, ClassNotFoundException {
+      try {
+        // it doesn't seem like you should have to do this, but java serialization is wacky, and doesn't call the default constructor.
+        __isset_bitfield = 0;
+        read(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(in)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private static class isUserExists_resultStandardSchemeFactory implements SchemeFactory {
+      public isUserExists_resultStandardScheme getScheme() {
+        return new isUserExists_resultStandardScheme();
+      }
+    }
+
+    private static class isUserExists_resultStandardScheme extends StandardScheme<isUserExists_result> {
+
+      public void read(org.apache.thrift.protocol.TProtocol iprot, isUserExists_result struct) throws org.apache.thrift.TException {
+        org.apache.thrift.protocol.TField schemeField;
+        iprot.readStructBegin();
+        while (true)
+        {
+          schemeField = iprot.readFieldBegin();
+          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
+            break;
+          }
+          switch (schemeField.id) {
+            case 0: // SUCCESS
+              if (schemeField.type == org.apache.thrift.protocol.TType.BOOL) {
+                struct.success = iprot.readBool();
+                struct.setSuccessIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            case 1: // IRE
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRUCT) {
+                struct.ire = new org.apache.airavata.model.error.InvalidRequestException();
+                struct.ire.read(iprot);
+                struct.setIreIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            case 2: // ACE
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRUCT) {
+                struct.ace = new org.apache.airavata.model.error.AiravataClientException();
+                struct.ace.read(iprot);
+                struct.setAceIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            case 3: // ASE
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRUCT) {
+                struct.ase = new org.apache.airavata.model.error.AiravataSystemException();
+                struct.ase.read(iprot);
+                struct.setAseIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            case 4: // AE
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRUCT) {
+                struct.ae = new org.apache.airavata.model.error.AuthorizationException();
+                struct.ae.read(iprot);
+                struct.setAeIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            default:
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+          }
+          iprot.readFieldEnd();
+        }
+        iprot.readStructEnd();
+
+        // check for required fields of primitive type, which can't be checked in the validate method
+        struct.validate();
+      }
+
+      public void write(org.apache.thrift.protocol.TProtocol oprot, isUserExists_result struct) throws org.apache.thrift.TException {
+        struct.validate();
+
+        oprot.writeStructBegin(STRUCT_DESC);
+        if (struct.isSetSuccess()) {
+          oprot.writeFieldBegin(SUCCESS_FIELD_DESC);
+          oprot.writeBool(struct.success);
+          oprot.writeFieldEnd();
+        }
+        if (struct.ire != null) {
+          oprot.writeFieldBegin(IRE_FIELD_DESC);
+          struct.ire.write(oprot);
+          oprot.writeFieldEnd();
+        }
+        if (struct.ace != null) {
+          oprot.writeFieldBegin(ACE_FIELD_DESC);
+          struct.ace.write(oprot);
+          oprot.writeFieldEnd();
+        }
+        if (struct.ase != null) {
+          oprot.writeFieldBegin(ASE_FIELD_DESC);
+          struct.ase.write(oprot);
+          oprot.writeFieldEnd();
+        }
+        if (struct.ae != null) {
+          oprot.writeFieldBegin(AE_FIELD_DESC);
+          struct.ae.write(oprot);
+          oprot.writeFieldEnd();
+        }
+        oprot.writeFieldStop();
+        oprot.writeStructEnd();
+      }
+
+    }
+
+    private static class isUserExists_resultTupleSchemeFactory implements SchemeFactory {
+      public isUserExists_resultTupleScheme getScheme() {
+        return new isUserExists_resultTupleScheme();
+      }
+    }
+
+    private static class isUserExists_resultTupleScheme extends TupleScheme<isUserExists_result> {
+
+      @Override
+      public void write(org.apache.thrift.protocol.TProtocol prot, isUserExists_result struct) throws org.apache.thrift.TException {
+        TTupleProtocol oprot = (TTupleProtocol) prot;
+        BitSet optionals = new BitSet();
+        if (struct.isSetSuccess()) {
+          optionals.set(0);
+        }
+        if (struct.isSetIre()) {
+          optionals.set(1);
+        }
+        if (struct.isSetAce()) {
+          optionals.set(2);
+        }
+        if (struct.isSetAse()) {
+          optionals.set(3);
+        }
+        if (struct.isSetAe()) {
+          optionals.set(4);
+        }
+        oprot.writeBitSet(optionals, 5);
+        if (struct.isSetSuccess()) {
+          oprot.writeBool(struct.success);
+        }
+        if (struct.isSetIre()) {
+          struct.ire.write(oprot);
+        }
+        if (struct.isSetAce()) {
+          struct.ace.write(oprot);
+        }
+        if (struct.isSetAse()) {
+          struct.ase.write(oprot);
+        }
+        if (struct.isSetAe()) {
+          struct.ae.write(oprot);
+        }
+      }
+
+      @Override
+      public void read(org.apache.thrift.protocol.TProtocol prot, isUserExists_result struct) throws org.apache.thrift.TException {
+        TTupleProtocol iprot = (TTupleProtocol) prot;
+        BitSet incoming = iprot.readBitSet(5);
+        if (incoming.get(0)) {
+          struct.success = iprot.readBool();
+          struct.setSuccessIsSet(true);
+        }
+        if (incoming.get(1)) {
+          struct.ire = new org.apache.airavata.model.error.InvalidRequestException();
+          struct.ire.read(iprot);
+          struct.setIreIsSet(true);
+        }
+        if (incoming.get(2)) {
+          struct.ace = new org.apache.airavata.model.error.AiravataClientException();
+          struct.ace.read(iprot);
+          struct.setAceIsSet(true);
+        }
+        if (incoming.get(3)) {
+          struct.ase = new org.apache.airavata.model.error.AiravataSystemException();
+          struct.ase.read(iprot);
+          struct.setAseIsSet(true);
+        }
+        if (incoming.get(4)) {
+          struct.ae = new org.apache.airavata.model.error.AuthorizationException();
+          struct.ae.read(iprot);
+          struct.setAeIsSet(true);
+        }
+      }
+    }
+
+  }
+
   public static class addGateway_args implements org.apache.thrift.TBase<addGateway_args, addGateway_args._Fields>, java.io.Serializable, Cloneable, Comparable<addGateway_args>   {
     private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("addGateway_args");
 

http://git-wip-us.apache.org/repos/asf/airavata/blob/471ae44a/airavata-api/airavata-client-sdks/airavata-cpp-sdk/src/main/resources/lib/airavata/Airavata.cpp
----------------------------------------------------------------------
diff --git a/airavata-api/airavata-client-sdks/airavata-cpp-sdk/src/main/resources/lib/airavata/Airavata.cpp b/airavata-api/airavata-client-sdks/airavata-cpp-sdk/src/main/resources/lib/airavata/Airavata.cpp
index f56ab9b..68c458a 100644
--- a/airavata-api/airavata-client-sdks/airavata-cpp-sdk/src/main/resources/lib/airavata/Airavata.cpp
+++ b/airavata-api/airavata-client-sdks/airavata-cpp-sdk/src/main/resources/lib/airavata/Airavata.cpp
@@ -296,6 +296,314 @@ uint32_t Airavata_getAPIVersion_presult::read(::apache::thrift::protocol::TProto
 }
 
 
+Airavata_isUserExists_args::~Airavata_isUserExists_args() throw() {
+}
+
+
+uint32_t Airavata_isUserExists_args::read(::apache::thrift::protocol::TProtocol* iprot) {
+
+  apache::thrift::protocol::TInputRecursionTracker tracker(*iprot);
+  uint32_t xfer = 0;
+  std::string fname;
+  ::apache::thrift::protocol::TType ftype;
+  int16_t fid;
+
+  xfer += iprot->readStructBegin(fname);
+
+  using ::apache::thrift::protocol::TProtocolException;
+
+  bool isset_authzToken = false;
+  bool isset_gatewayId = false;
+  bool isset_userName = false;
+
+  while (true)
+  {
+    xfer += iprot->readFieldBegin(fname, ftype, fid);
+    if (ftype == ::apache::thrift::protocol::T_STOP) {
+      break;
+    }
+    switch (fid)
+    {
+      case 1:
+        if (ftype == ::apache::thrift::protocol::T_STRUCT) {
+          xfer += this->authzToken.read(iprot);
+          isset_authzToken = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      case 2:
+        if (ftype == ::apache::thrift::protocol::T_STRING) {
+          xfer += iprot->readString(this->gatewayId);
+          isset_gatewayId = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      case 3:
+        if (ftype == ::apache::thrift::protocol::T_STRING) {
+          xfer += iprot->readString(this->userName);
+          isset_userName = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      default:
+        xfer += iprot->skip(ftype);
+        break;
+    }
+    xfer += iprot->readFieldEnd();
+  }
+
+  xfer += iprot->readStructEnd();
+
+  if (!isset_authzToken)
+    throw TProtocolException(TProtocolException::INVALID_DATA);
+  if (!isset_gatewayId)
+    throw TProtocolException(TProtocolException::INVALID_DATA);
+  if (!isset_userName)
+    throw TProtocolException(TProtocolException::INVALID_DATA);
+  return xfer;
+}
+
+uint32_t Airavata_isUserExists_args::write(::apache::thrift::protocol::TProtocol* oprot) const {
+  uint32_t xfer = 0;
+  apache::thrift::protocol::TOutputRecursionTracker tracker(*oprot);
+  xfer += oprot->writeStructBegin("Airavata_isUserExists_args");
+
+  xfer += oprot->writeFieldBegin("authzToken", ::apache::thrift::protocol::T_STRUCT, 1);
+  xfer += this->authzToken.write(oprot);
+  xfer += oprot->writeFieldEnd();
+
+  xfer += oprot->writeFieldBegin("gatewayId", ::apache::thrift::protocol::T_STRING, 2);
+  xfer += oprot->writeString(this->gatewayId);
+  xfer += oprot->writeFieldEnd();
+
+  xfer += oprot->writeFieldBegin("userName", ::apache::thrift::protocol::T_STRING, 3);
+  xfer += oprot->writeString(this->userName);
+  xfer += oprot->writeFieldEnd();
+
+  xfer += oprot->writeFieldStop();
+  xfer += oprot->writeStructEnd();
+  return xfer;
+}
+
+
+Airavata_isUserExists_pargs::~Airavata_isUserExists_pargs() throw() {
+}
+
+
+uint32_t Airavata_isUserExists_pargs::write(::apache::thrift::protocol::TProtocol* oprot) const {
+  uint32_t xfer = 0;
+  apache::thrift::protocol::TOutputRecursionTracker tracker(*oprot);
+  xfer += oprot->writeStructBegin("Airavata_isUserExists_pargs");
+
+  xfer += oprot->writeFieldBegin("authzToken", ::apache::thrift::protocol::T_STRUCT, 1);
+  xfer += (*(this->authzToken)).write(oprot);
+  xfer += oprot->writeFieldEnd();
+
+  xfer += oprot->writeFieldBegin("gatewayId", ::apache::thrift::protocol::T_STRING, 2);
+  xfer += oprot->writeString((*(this->gatewayId)));
+  xfer += oprot->writeFieldEnd();
+
+  xfer += oprot->writeFieldBegin("userName", ::apache::thrift::protocol::T_STRING, 3);
+  xfer += oprot->writeString((*(this->userName)));
+  xfer += oprot->writeFieldEnd();
+
+  xfer += oprot->writeFieldStop();
+  xfer += oprot->writeStructEnd();
+  return xfer;
+}
+
+
+Airavata_isUserExists_result::~Airavata_isUserExists_result() throw() {
+}
+
+
+uint32_t Airavata_isUserExists_result::read(::apache::thrift::protocol::TProtocol* iprot) {
+
+  apache::thrift::protocol::TInputRecursionTracker tracker(*iprot);
+  uint32_t xfer = 0;
+  std::string fname;
+  ::apache::thrift::protocol::TType ftype;
+  int16_t fid;
+
+  xfer += iprot->readStructBegin(fname);
+
+  using ::apache::thrift::protocol::TProtocolException;
+
+
+  while (true)
+  {
+    xfer += iprot->readFieldBegin(fname, ftype, fid);
+    if (ftype == ::apache::thrift::protocol::T_STOP) {
+      break;
+    }
+    switch (fid)
+    {
+      case 0:
+        if (ftype == ::apache::thrift::protocol::T_BOOL) {
+          xfer += iprot->readBool(this->success);
+          this->__isset.success = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      case 1:
+        if (ftype == ::apache::thrift::protocol::T_STRUCT) {
+          xfer += this->ire.read(iprot);
+          this->__isset.ire = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      case 2:
+        if (ftype == ::apache::thrift::protocol::T_STRUCT) {
+          xfer += this->ace.read(iprot);
+          this->__isset.ace = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      case 3:
+        if (ftype == ::apache::thrift::protocol::T_STRUCT) {
+          xfer += this->ase.read(iprot);
+          this->__isset.ase = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      case 4:
+        if (ftype == ::apache::thrift::protocol::T_STRUCT) {
+          xfer += this->ae.read(iprot);
+          this->__isset.ae = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      default:
+        xfer += iprot->skip(ftype);
+        break;
+    }
+    xfer += iprot->readFieldEnd();
+  }
+
+  xfer += iprot->readStructEnd();
+
+  return xfer;
+}
+
+uint32_t Airavata_isUserExists_result::write(::apache::thrift::protocol::TProtocol* oprot) const {
+
+  uint32_t xfer = 0;
+
+  xfer += oprot->writeStructBegin("Airavata_isUserExists_result");
+
+  if (this->__isset.success) {
+    xfer += oprot->writeFieldBegin("success", ::apache::thrift::protocol::T_BOOL, 0);
+    xfer += oprot->writeBool(this->success);
+    xfer += oprot->writeFieldEnd();
+  } else if (this->__isset.ire) {
+    xfer += oprot->writeFieldBegin("ire", ::apache::thrift::protocol::T_STRUCT, 1);
+    xfer += this->ire.write(oprot);
+    xfer += oprot->writeFieldEnd();
+  } else if (this->__isset.ace) {
+    xfer += oprot->writeFieldBegin("ace", ::apache::thrift::protocol::T_STRUCT, 2);
+    xfer += this->ace.write(oprot);
+    xfer += oprot->writeFieldEnd();
+  } else if (this->__isset.ase) {
+    xfer += oprot->writeFieldBegin("ase", ::apache::thrift::protocol::T_STRUCT, 3);
+    xfer += this->ase.write(oprot);
+    xfer += oprot->writeFieldEnd();
+  } else if (this->__isset.ae) {
+    xfer += oprot->writeFieldBegin("ae", ::apache::thrift::protocol::T_STRUCT, 4);
+    xfer += this->ae.write(oprot);
+    xfer += oprot->writeFieldEnd();
+  }
+  xfer += oprot->writeFieldStop();
+  xfer += oprot->writeStructEnd();
+  return xfer;
+}
+
+
+Airavata_isUserExists_presult::~Airavata_isUserExists_presult() throw() {
+}
+
+
+uint32_t Airavata_isUserExists_presult::read(::apache::thrift::protocol::TProtocol* iprot) {
+
+  apache::thrift::protocol::TInputRecursionTracker tracker(*iprot);
+  uint32_t xfer = 0;
+  std::string fname;
+  ::apache::thrift::protocol::TType ftype;
+  int16_t fid;
+
+  xfer += iprot->readStructBegin(fname);
+
+  using ::apache::thrift::protocol::TProtocolException;
+
+
+  while (true)
+  {
+    xfer += iprot->readFieldBegin(fname, ftype, fid);
+    if (ftype == ::apache::thrift::protocol::T_STOP) {
+      break;
+    }
+    switch (fid)
+    {
+      case 0:
+        if (ftype == ::apache::thrift::protocol::T_BOOL) {
+          xfer += iprot->readBool((*(this->success)));
+          this->__isset.success = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      case 1:
+        if (ftype == ::apache::thrift::protocol::T_STRUCT) {
+          xfer += this->ire.read(iprot);
+          this->__isset.ire = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      case 2:
+        if (ftype == ::apache::thrift::protocol::T_STRUCT) {
+          xfer += this->ace.read(iprot);
+          this->__isset.ace = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      case 3:
+        if (ftype == ::apache::thrift::protocol::T_STRUCT) {
+          xfer += this->ase.read(iprot);
+          this->__isset.ase = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      case 4:
+        if (ftype == ::apache::thrift::protocol::T_STRUCT) {
+          xfer += this->ae.read(iprot);
+          this->__isset.ae = true;
+        } else {
+          xfer += iprot->skip(ftype);
+        }
+        break;
+      default:
+        xfer += iprot->skip(ftype);
+        break;
+    }
+    xfer += iprot->readFieldEnd();
+  }
+
+  xfer += iprot->readStructEnd();
+
+  return xfer;
+}
+
+
 Airavata_addGateway_args::~Airavata_addGateway_args() throw() {
 }
 
@@ -43550,6 +43858,78 @@ void AiravataClient::recv_getAPIVersion(std::string& _return)
   throw ::apache::thrift::TApplicationException(::apache::thrift::TApplicationException::MISSING_RESULT, "getAPIVersion failed: unknown result");
 }
 
+bool AiravataClient::isUserExists(const  ::apache::airavata::model::security::AuthzToken& authzToken, const std::string& gatewayId, const std::string& userName)
+{
+  send_isUserExists(authzToken, gatewayId, userName);
+  return recv_isUserExists();
+}
+
+void AiravataClient::send_isUserExists(const  ::apache::airavata::model::security::AuthzToken& authzToken, const std::string& gatewayId, const std::string& userName)
+{
+  int32_t cseqid = 0;
+  oprot_->writeMessageBegin("isUserExists", ::apache::thrift::protocol::T_CALL, cseqid);
+
+  Airavata_isUserExists_pargs args;
+  args.authzToken = &authzToken;
+  args.gatewayId = &gatewayId;
+  args.userName = &userName;
+  args.write(oprot_);
+
+  oprot_->writeMessageEnd();
+  oprot_->getTransport()->writeEnd();
+  oprot_->getTransport()->flush();
+}
+
+bool AiravataClient::recv_isUserExists()
+{
+
+  int32_t rseqid = 0;
+  std::string fname;
+  ::apache::thrift::protocol::TMessageType mtype;
+
+  iprot_->readMessageBegin(fname, mtype, rseqid);
+  if (mtype == ::apache::thrift::protocol::T_EXCEPTION) {
+    ::apache::thrift::TApplicationException x;
+    x.read(iprot_);
+    iprot_->readMessageEnd();
+    iprot_->getTransport()->readEnd();
+    throw x;
+  }
+  if (mtype != ::apache::thrift::protocol::T_REPLY) {
+    iprot_->skip(::apache::thrift::protocol::T_STRUCT);
+    iprot_->readMessageEnd();
+    iprot_->getTransport()->readEnd();
+  }
+  if (fname.compare("isUserExists") != 0) {
+    iprot_->skip(::apache::thrift::protocol::T_STRUCT);
+    iprot_->readMessageEnd();
+    iprot_->getTransport()->readEnd();
+  }
+  bool _return;
+  Airavata_isUserExists_presult result;
+  result.success = &_return;
+  result.read(iprot_);
+  iprot_->readMessageEnd();
+  iprot_->getTransport()->readEnd();
+
+  if (result.__isset.success) {
+    return _return;
+  }
+  if (result.__isset.ire) {
+    throw result.ire;
+  }
+  if (result.__isset.ace) {
+    throw result.ace;
+  }
+  if (result.__isset.ase) {
+    throw result.ase;
+  }
+  if (result.__isset.ae) {
+    throw result.ae;
+  }
+  throw ::apache::thrift::TApplicationException(::apache::thrift::TApplicationException::MISSING_RESULT, "isUserExists failed: unknown result");
+}
+
 void AiravataClient::addGateway(std::string& _return, const  ::apache::airavata::model::security::AuthzToken& authzToken, const  ::apache::airavata::model::workspace::Gateway& gateway)
 {
   send_addGateway(authzToken, gateway);
@@ -53512,6 +53892,72 @@ void AiravataProcessor::process_getAPIVersion(int32_t seqid, ::apache::thrift::p
   }
 }
 
+void AiravataProcessor::process_isUserExists(int32_t seqid, ::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, void* callContext)
+{
+  void* ctx = NULL;
+  if (this->eventHandler_.get() != NULL) {
+    ctx = this->eventHandler_->getContext("Airavata.isUserExists", callContext);
+  }
+  ::apache::thrift::TProcessorContextFreer freer(this->eventHandler_.get(), ctx, "Airavata.isUserExists");
+
+  if (this->eventHandler_.get() != NULL) {
+    this->eventHandler_->preRead(ctx, "Airavata.isUserExists");
+  }
+
+  Airavata_isUserExists_args args;
+  args.read(iprot);
+  iprot->readMessageEnd();
+  uint32_t bytes = iprot->getTransport()->readEnd();
+
+  if (this->eventHandler_.get() != NULL) {
+    this->eventHandler_->postRead(ctx, "Airavata.isUserExists", bytes);
+  }
+
+  Airavata_isUserExists_result result;
+  try {
+    result.success = iface_->isUserExists(args.authzToken, args.gatewayId, args.userName);
+    result.__isset.success = true;
+  } catch ( ::apache::airavata::api::error::InvalidRequestException &ire) {
+    result.ire = ire;
+    result.__isset.ire = true;
+  } catch ( ::apache::airavata::api::error::AiravataClientException &ace) {
+    result.ace = ace;
+    result.__isset.ace = true;
+  } catch ( ::apache::airavata::api::error::AiravataSystemException &ase) {
+    result.ase = ase;
+    result.__isset.ase = true;
+  } catch ( ::apache::airavata::api::error::AuthorizationException &ae) {
+    result.ae = ae;
+    result.__isset.ae = true;
+  } catch (const std::exception& e) {
+    if (this->eventHandler_.get() != NULL) {
+      this->eventHandler_->handlerError(ctx, "Airavata.isUserExists");
+    }
+
+    ::apache::thrift::TApplicationException x(e.what());
+    oprot->writeMessageBegin("isUserExists", ::apache::thrift::protocol::T_EXCEPTION, seqid);
+    x.write(oprot);
+    oprot->writeMessageEnd();
+    oprot->getTransport()->writeEnd();
+    oprot->getTransport()->flush();
+    return;
+  }
+
+  if (this->eventHandler_.get() != NULL) {
+    this->eventHandler_->preWrite(ctx, "Airavata.isUserExists");
+  }
+
+  oprot->writeMessageBegin("isUserExists", ::apache::thrift::protocol::T_REPLY, seqid);
+  result.write(oprot);
+  oprot->writeMessageEnd();
+  bytes = oprot->getTransport()->writeEnd();
+  oprot->getTransport()->flush();
+
+  if (this->eventHandler_.get() != NULL) {
+    this->eventHandler_->postWrite(ctx, "Airavata.isUserExists", bytes);
+  }
+}
+
 void AiravataProcessor::process_addGateway(int32_t seqid, ::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, void* callContext)
 {
   void* ctx = NULL;
@@ -62731,6 +63177,108 @@ void AiravataConcurrentClient::recv_getAPIVersion(std::string& _return, const in
   } // end while(true)
 }
 
+bool AiravataConcurrentClient::isUserExists(const  ::apache::airavata::model::security::AuthzToken& authzToken, const std::string& gatewayId, const std::string& userName)
+{
+  int32_t seqid = send_isUserExists(authzToken, gatewayId, userName);
+  return recv_isUserExists(seqid);
+}
+
+int32_t AiravataConcurrentClient::send_isUserExists(const  ::apache::airavata::model::security::AuthzToken& authzToken, const std::string& gatewayId, const std::string& userName)
+{
+  int32_t cseqid = this->sync_.generateSeqId();
+  ::apache::thrift::async::TConcurrentSendSentry sentry(&this->sync_);
+  oprot_->writeMessageBegin("isUserExists", ::apache::thrift::protocol::T_CALL, cseqid);
+
+  Airavata_isUserExists_pargs args;
+  args.authzToken = &authzToken;
+  args.gatewayId = &gatewayId;
+  args.userName = &userName;
+  args.write(oprot_);
+
+  oprot_->writeMessageEnd();
+  oprot_->getTransport()->writeEnd();
+  oprot_->getTransport()->flush();
+
+  sentry.commit();
+  return cseqid;
+}
+
+bool AiravataConcurrentClient::recv_isUserExists(const int32_t seqid)
+{
+
+  int32_t rseqid = 0;
+  std::string fname;
+  ::apache::thrift::protocol::TMessageType mtype;
+
+  // the read mutex gets dropped and reacquired as part of waitForWork()
+  // The destructor of this sentry wakes up other clients
+  ::apache::thrift::async::TConcurrentRecvSentry sentry(&this->sync_, seqid);
+
+  while(true) {
+    if(!this->sync_.getPending(fname, mtype, rseqid)) {
+      iprot_->readMessageBegin(fname, mtype, rseqid);
+    }
+    if(seqid == rseqid) {
+      if (mtype == ::apache::thrift::protocol::T_EXCEPTION) {
+        ::apache::thrift::TApplicationException x;
+        x.read(iprot_);
+        iprot_->readMessageEnd();
+        iprot_->getTransport()->readEnd();
+        sentry.commit();
+        throw x;
+      }
+      if (mtype != ::apache::thrift::protocol::T_REPLY) {
+        iprot_->skip(::apache::thrift::protocol::T_STRUCT);
+        iprot_->readMessageEnd();
+        iprot_->getTransport()->readEnd();
+      }
+      if (fname.compare("isUserExists") != 0) {
+        iprot_->skip(::apache::thrift::protocol::T_STRUCT);
+        iprot_->readMessageEnd();
+        iprot_->getTransport()->readEnd();
+
+        // in a bad state, don't commit
+        using ::apache::thrift::protocol::TProtocolException;
+        throw TProtocolException(TProtocolException::INVALID_DATA);
+      }
+      bool _return;
+      Airavata_isUserExists_presult result;
+      result.success = &_return;
+      result.read(iprot_);
+      iprot_->readMessageEnd();
+      iprot_->getTransport()->readEnd();
+
+      if (result.__isset.success) {
+        sentry.commit();
+        return _return;
+      }
+      if (result.__isset.ire) {
+        sentry.commit();
+        throw result.ire;
+      }
+      if (result.__isset.ace) {
+        sentry.commit();
+        throw result.ace;
+      }
+      if (result.__isset.ase) {
+        sentry.commit();
+        throw result.ase;
+      }
+      if (result.__isset.ae) {
+        sentry.commit();
+        throw result.ae;
+      }
+      // in a bad state, don't commit
+      throw ::apache::thrift::TApplicationException(::apache::thrift::TApplicationException::MISSING_RESULT, "isUserExists failed: unknown result");
+    }
+    // seqid != rseqid
+    this->sync_.updatePending(fname, mtype, rseqid);
+
+    // this will temporarily unlock the readMutex, and let other clients get work done
+    this->sync_.waitForWork(seqid);
+  } // end while(true)
+}
+
 void AiravataConcurrentClient::addGateway(std::string& _return, const  ::apache::airavata::model::security::AuthzToken& authzToken, const  ::apache::airavata::model::workspace::Gateway& gateway)
 {
   int32_t seqid = send_addGateway(authzToken, gateway);