Fix for https://github.com/wso2/product-iots/issues/1305

components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/DeviceManagementServiceImpl.java

@@ -24,7 +24,6 @@ import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.context.CarbonContext;
 import org.wso2.carbon.device.mgt.common.Device;
 import org.wso2.carbon.device.mgt.common.DeviceIdentifier;
-import org.wso2.carbon.device.mgt.common.DeviceManagementConstants;
 import org.wso2.carbon.device.mgt.common.DeviceManagementException;
 import org.wso2.carbon.device.mgt.common.EnrolmentInfo;
 import org.wso2.carbon.device.mgt.common.Feature;
@@ -66,7 +65,6 @@ import org.wso2.carbon.policy.mgt.common.PolicyManagementException;
 import org.wso2.carbon.policy.mgt.core.PolicyManagerService;
 import org.wso2.carbon.utils.multitenancy.MultitenantUtils;
 
-import javax.security.auth.login.Configuration;
 import javax.validation.Valid;
 import javax.validation.constraints.Size;
 import javax.ws.rs.Consumes;
@@ -92,8 +90,8 @@ import java.util.List;
 @Consumes(MediaType.APPLICATION_JSON)
 public class DeviceManagementServiceImpl implements DeviceManagementService {
 
-    private static final Log log = LogFactory.getLog(DeviceManagementServiceImpl.class);
     public static final String DATE_FORMAT_NOW = "yyyy-MM-dd HH:mm:ss";
+    private static final Log log = LogFactory.getLog(DeviceManagementServiceImpl.class);
 
     @GET
     @Path("/{type}/{id}/status")
@@ -499,15 +497,13 @@ public class DeviceManagementServiceImpl implements DeviceManagementService {
             @QueryParam("offset") int offset,
             @QueryParam("limit") int limit) {
         List<Application> applications;
-        //ApplicationList appList;
         ApplicationManagementProviderService amc;
         try {
             RequestValidationUtil.validateDeviceIdentifier(type, id);
 
             amc = DeviceMgtAPIUtils.getAppManagementService();
             applications = amc.getApplicationListForDevice(new DeviceIdentifier(id, type));
-
+            return Response.status(Response.Status.OK).entity(applications).build();
-            //TODO: return app list
         } catch (ApplicationManagementException e) {
             String msg = "Error occurred while fetching the apps of the '" + type + "' device, which carries " +
                     "the id '" + id + "'";
@@ -515,7 +511,6 @@ public class DeviceManagementServiceImpl implements DeviceManagementService {
             return Response.serverError().entity(
                     new ErrorResponse.ErrorResponseBuilder().setMessage(msg).build()).build();
         }
-        return Response.status(Response.Status.OK).entity(applications).build();
     }
 
     @GET

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/app/mgt/ApplicationManagerProviderServiceImpl.java

@@ -50,13 +50,12 @@ import java.util.List;
  */
 public class ApplicationManagerProviderServiceImpl implements ApplicationManagementProviderService {
 
+    private static final String GET_APP_LIST_URL = "store/apis/assets/mobileapp?domain=carbon.super&page=1";
+    private static final Log log = LogFactory.getLog(ApplicationManagerProviderServiceImpl.class);
     private DeviceDAO deviceDAO;
     private ApplicationDAO applicationDAO;
     private ApplicationMappingDAO applicationMappingDAO;
 
-    private static final String GET_APP_LIST_URL = "store/apis/assets/mobileapp?domain=carbon.super&page=1";
-    private static final Log log = LogFactory.getLog(ApplicationManagerProviderServiceImpl.class);
-
     public ApplicationManagerProviderServiceImpl(AppManagementConfig appManagementConfig) {
         this.deviceDAO = DeviceManagementDAOFactory.getDeviceDAO();
         this.applicationDAO = DeviceManagementDAOFactory.getApplicationDAO();
@@ -198,17 +197,17 @@ public class ApplicationManagerProviderServiceImpl implements ApplicationManagem
     public void updateApplicationListInstalledInDevice(
             DeviceIdentifier deviceIdentifier,
             List<Application> applications) throws ApplicationManagementException {
+        if (log.isDebugEnabled()) {
+            log.debug("Updating application list for device: " + deviceIdentifier.toString());
+        }
         List<Application> installedAppList = getApplicationListForDevice(deviceIdentifier);
         try {
             Device device = DeviceManagementDataHolder.getInstance().getDeviceManagementProvider().getDevice(deviceIdentifier,
                     false);
             int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
-            if (log.isDebugEnabled()) {
-                log.debug("Device:" + device.getId() + ":identifier:" + deviceIdentifier.getId());
-            }
 
             if (log.isDebugEnabled()) {
-                log.debug("num of apps installed:" + installedAppList.size());
+                log.debug("Number of apps installed:" + installedAppList.size());
             }
             List<Application> appsToAdd = new ArrayList<>();
             List<Integer> appIdsToRemove = new ArrayList<>(installedAppList.size());
@@ -227,13 +226,14 @@ public class ApplicationManagerProviderServiceImpl implements ApplicationManagem
             List<Integer> applicationIds = new ArrayList<>();
 
             for (Application application : applications) {
-                /*
+                // Adding N/A if application doesn't have a version. Also truncating the application version,
-                Truncating the application version if length of the version is greater than maximum allowed length.
+                // if length of the version is greater than maximum allowed length.
-                 */
+                if (application.getVersion() == null) {
-                if (application.getVersion().length() >
+                    application.setVersion("N/A");
-                        DeviceManagementConstants.OperationAttributes.APPLIST_VERSION_MAX_LENGTH) {
+                } else if (application.getVersion().length() >
+                           DeviceManagementConstants.OperationAttributes.APPLIST_VERSION_MAX_LENGTH) {
                     application.setVersion(StringUtils.abbreviate(application.getVersion(),
-                            DeviceManagementConstants.OperationAttributes.APPLIST_VERSION_MAX_LENGTH));
+                                                                  DeviceManagementConstants.OperationAttributes.APPLIST_VERSION_MAX_LENGTH));
                 }
                 if (!installedAppList.contains(application)) {
                     installedApp = applicationDAO.getApplication(application.getApplicationIdentifier(),
@@ -258,24 +258,34 @@ public class ApplicationManagerProviderServiceImpl implements ApplicationManagem
             if (log.isDebugEnabled()) {
                 log.debug("num of remove app Ids:" + appIdsToRemove.size());
             }
-
             DeviceManagementDAOFactory.commitTransaction();
         } catch (DeviceManagementDAOException e) {
             DeviceManagementDAOFactory.rollbackTransaction();
-            throw new ApplicationManagementException("Error occurred saving application list to the device", e);
+            String msg = "Error occurred saving application list of the device " + deviceIdentifier.toString();
+            log.error(msg, e);
+            throw new ApplicationManagementException(msg, e);
         } catch (TransactionManagementException e) {
-            throw new ApplicationManagementException("Error occurred while initializing transaction", e);
+            String msg = "Error occurred while initializing transaction for saving application list to the device "
+                         + deviceIdentifier.toString();
+            log.error(msg, e);
+            throw new ApplicationManagementException(msg, e);
         } catch (DeviceManagementException e) {
-            throw new ApplicationManagementException("Error occurred obtaining the device object.", e);
+            String msg = "Error occurred obtaining the device object for device " + deviceIdentifier.toString();
+            log.error(msg, e);
+            throw new ApplicationManagementException(msg, e);
+        } catch (Exception e) {
+            String msg = "Exception occurred saving application list of the device " + deviceIdentifier.toString();
+            log.error(msg, e);
+            throw new ApplicationManagementException(msg, e);
         } finally {
             DeviceManagementDAOFactory.closeConnection();
         }
     }
 
     @Override
-    public List<Application> getApplicationListForDevice(
+    public List<Application> getApplicationListForDevice(DeviceIdentifier deviceId)
-            DeviceIdentifier deviceId) throws ApplicationManagementException {
+            throws ApplicationManagementException {
-        Device device = null;
+        Device device;
         try {
             device = DeviceManagementDataHolder.getInstance().getDeviceManagementProvider().getDevice(deviceId,
                     false);
@@ -288,16 +298,24 @@ public class ApplicationManagerProviderServiceImpl implements ApplicationManagem
                 log.debug("No device is found upon the device identifier '" + deviceId.getId() +
                         "' and type '" + deviceId.getType() + "'. Therefore returning null");
             }
-            return null;
+            return new ArrayList<>();
         }
         try {
             DeviceManagementDAOFactory.openConnection();
             return applicationDAO.getInstalledApplications(device.getId());
         } catch (DeviceManagementDAOException e) {
-            throw new ApplicationManagementException("Error occurred while fetching the Application List of '" +
+            String msg = "Error occurred while fetching the Application List of device " + deviceId.toString();
-                    deviceId.getType() + "' device carrying the identifier'" + deviceId.getId(), e);
+            log.error(msg, e);
+            throw new ApplicationManagementException(msg, e);
         } catch (SQLException e) {
-            throw new ApplicationManagementException("Error occurred while opening a connection to the data source", e);
+            String msg = "Error occurred while opening a connection to the data source to get application " +
+                         "list of the device " + deviceId.toString();
+            log.error(msg, e);
+            throw new ApplicationManagementException(msg, e);
+        } catch (Exception e) {
+            String msg = "Exception occurred getting application list of the device " + deviceId.toString();
+            log.error(msg, e);
+            throw new ApplicationManagementException(msg, e);
         }  finally {
             DeviceManagementDAOFactory.closeConnection();
         }