Create api to generate report to filter devices with outdated OS versions

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

@@ -38,6 +38,7 @@ import org.wso2.carbon.device.mgt.jaxrs.util.Constants;
 import javax.ws.rs.Consumes;
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
@@ -309,4 +310,63 @@ public interface ReportManagementService {
                     value = "Provide how many device details you require from the starting pagination index/offset.")
             @QueryParam("limit")
                     int limit) throws ReportManagementException;
+
+    @GET
+    @Path("expired-devices/{deviceType}")
+    @ApiOperation(
+            produces = MediaType.APPLICATION_JSON,
+            httpMethod = "GET",
+            value = "Getting Details of Registered Devices filtered by OS version build date",
+            notes = "Provides details of devices that have a version build date older than the provided date.",
+            tags = "Device Management",
+            extensions = {
+                    @Extension(properties = {
+                            @ExtensionProperty(name = Constants.SCOPE, value = "perm:devices:view")
+                    })
+            }
+    )
+    @ApiResponses(
+            value = {
+                    @ApiResponse(
+                            code = 200,
+                            message = "OK. \n Successfully fetched the list of devices.",
+                            response = DeviceList.class,
+                            responseHeaders = {
+                                    @ResponseHeader(
+                                            name = "Content-Type",
+                                            description = "The content type of the body")}),
+                    @ApiResponse(
+                            code = 404,
+                            message = "Not Found. " +
+                                      "\n Device type does not exist",
+                            response = ErrorResponse.class),
+                    @ApiResponse(
+                            code = 500,
+                            message = "Internal Server Error. " +
+                                      "\n Server error occurred while fetching the devices.",
+                            response = ErrorResponse.class)
+            })
+    Response getExpiredDevicesByOSVersion(
+            @ApiParam(
+                    name = "deviceType",
+                    value = "Name of the device type.",
+                    required = true)
+            @PathParam("deviceType") String deviceType,
+            @ApiParam(
+                    name = "osBuildDate",
+                    value = "Minimum OS version build date which is used to filter the devices.",
+                    required = true)
+            @QueryParam("osBuildDate") Long osBuildDate,
+            @ApiParam(
+                    name = "offset",
+                    value = "The starting pagination index for the list of filtered devices.",
+                    defaultValue = "0")
+            @QueryParam("offset")
+                    int offset,
+            @ApiParam(
+                    name = "limit",
+                    value = "Limit of the number of deices that should be returned.",
+                    defaultValue = "5")
+            @QueryParam("limit")
+                    int limit);
 }

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

@@ -25,7 +25,9 @@ import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.device.mgt.common.Device;
 import org.wso2.carbon.device.mgt.common.PaginationRequest;
 import org.wso2.carbon.device.mgt.common.PaginationResult;
+import org.wso2.carbon.device.mgt.common.exceptions.DeviceTypeNotFoundException;
 import org.wso2.carbon.device.mgt.common.exceptions.ReportManagementException;
+import org.wso2.carbon.device.mgt.core.report.mgt.Constants;
 import org.wso2.carbon.device.mgt.jaxrs.beans.DeviceList;
 import org.wso2.carbon.device.mgt.jaxrs.beans.ErrorResponse;
 import org.wso2.carbon.device.mgt.jaxrs.service.api.ReportManagementService;
@@ -36,6 +38,7 @@ import javax.ws.rs.Consumes;
 import javax.ws.rs.DefaultValue;
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
@@ -163,4 +166,35 @@ public class ReportManagementServiceImpl implements ReportManagementService {
                     new ErrorResponse.ErrorResponseBuilder().setMessage(msg).build()).build();
         }
     }
+
+    @GET
+    @Path("expired-devices/{deviceType}")
+    @Override
+    public Response getExpiredDevicesByOSVersion(@PathParam("deviceType") String deviceType,
+                                                 @QueryParam("osBuildDate") Long osBuildDate,
+                                                 @DefaultValue("0")
+                                                 @QueryParam("offset") int offset,
+                                                 @DefaultValue("5")
+                                                 @QueryParam("limit") int limit) {
+        try {
+            PaginationRequest request = new PaginationRequest(offset, limit);
+            request.setDeviceType(deviceType);
+            request.setProperty(Constants.OS_BUILD_DATE, osBuildDate);
+
+            PaginationResult paginationResult = DeviceMgtAPIUtils
+                    .getReportManagementService()
+                    .getDevicesExpiredByOSVersion(request);
+
+            return Response.status(Response.Status.OK).entity(paginationResult).build();
+        } catch (DeviceTypeNotFoundException e) {
+            String msg = "Error occurred while retrieving devices list. Device type: " + deviceType +
+                         "is not valid";
+            log.error(msg);
+            return Response.status(Response.Status.NOT_FOUND).entity(msg).build();
+        } catch (ReportManagementException e) {
+            String msg = "Error occurred while retrieving devices list with out-dated OS build versions";
+            log.error(msg, e);
+            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(msg).build();
+        }
+    }
 }

components/device-mgt/org.wso2.carbon.device.mgt.common/src/main/java/org/wso2/carbon/device/mgt/common/report/mgt/ReportManagementService.java

@@ -20,6 +20,7 @@ package org.wso2.carbon.device.mgt.common.report.mgt;
 import com.google.gson.JsonObject;
 import org.wso2.carbon.device.mgt.common.PaginationRequest;
 import org.wso2.carbon.device.mgt.common.PaginationResult;
+import org.wso2.carbon.device.mgt.common.exceptions.DeviceTypeNotFoundException;
 import org.wso2.carbon.device.mgt.common.exceptions.ReportManagementException;
 
 import java.util.List;
@@ -47,4 +48,15 @@ public interface ReportManagementService {
 
     JsonObject getCountOfDevicesByDuration(PaginationRequest request, List<String> statusList, String fromDate, String toDate)
             throws ReportManagementException;
+
+    /**
+     * Get a list of devices with the count which are older than the given OS version
+     *
+     * @param request {@link PaginationRequest}
+     * @return {@link PaginationResult}
+     * @throws ReportManagementException Might occur during the business logic or building database query
+     * @throws DeviceTypeNotFoundException Might occur while validating the device type
+     */
+    PaginationResult getDevicesExpiredByOSVersion(PaginationRequest request)
+            throws ReportManagementException, DeviceTypeNotFoundException;
 }

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/DeviceDAO.java

@@ -611,4 +611,27 @@ public interface DeviceDAO {
      */
     int getSubscribedDeviceCount(List<Integer> deviceIds, int tenantId, String status)
             throws DeviceManagementDAOException;
+
+    /**
+     * Get a list of devices older than the given OS version of a device type
+     *
+     * @param request  Object with device type and OS version info
+     * @param tenantId Id of the current tenant.
+     * @return {@link List<Device>}
+     * @throws DeviceManagementDAOException Thrown if error occurs while database transactions
+     */
+    List<Device> getDevicesExpiredByOSVersion(PaginationRequest request, int tenantId)
+            throws DeviceManagementDAOException;
+
+    /**
+     * Count the number of devices older than the given OS version of a device type
+     *
+     * @param deviceType Device type name
+     * @param osBuildDate BUild date off the current OS version
+     * @param tenantId Id of the current tenant.
+     * @return {@link Integer}
+     * @throws DeviceManagementDAOException Thrown if error occurs while database transactions
+     */
+    int getCountOfDeviceExpiredByOSVersion(String deviceType, long osBuildDate, int tenantId)
+            throws DeviceManagementDAOException;
 }

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/impl/AbstractDeviceDAOImpl.java

@@ -43,6 +43,7 @@ import org.wso2.carbon.device.mgt.common.DeviceIdentifier;
 import org.wso2.carbon.device.mgt.common.EnrolmentInfo;
 import org.wso2.carbon.device.mgt.common.EnrolmentInfo.Status;
 import org.wso2.carbon.device.mgt.common.PaginationRequest;
+import org.wso2.carbon.device.mgt.common.device.details.DeviceInfo;
 import org.wso2.carbon.device.mgt.common.device.details.DeviceLocationHistory;
 import org.wso2.carbon.device.mgt.common.configuration.mgt.DevicePropertyInfo;
 import org.wso2.carbon.device.mgt.common.device.details.DeviceData;
@@ -53,6 +54,7 @@ import org.wso2.carbon.device.mgt.core.dao.util.DeviceManagementDAOUtil;
 import org.wso2.carbon.device.mgt.core.dto.DeviceType;
 import org.wso2.carbon.device.mgt.core.geo.GeoCluster;
 import org.wso2.carbon.device.mgt.core.geo.geoHash.GeoCoordinate;
+import org.wso2.carbon.device.mgt.core.report.mgt.Constants;
 
 import java.sql.Connection;
 import java.sql.PreparedStatement;
@@ -1791,6 +1793,107 @@ public abstract class AbstractDeviceDAOImpl implements DeviceDAO {
         }
     }
 
+    @Override
+    public List<Device> getDevicesExpiredByOSVersion(PaginationRequest request, int tenantId)
+            throws DeviceManagementDAOException {
+        try {
+            Long osBuildDate = (Long) request.getProperty(Constants.OS_BUILD_DATE);
+            Connection conn = getConnection();
+            String sql = "SELECT " +
+                         "dt.NAME AS DEVICE_TYPE, " +
+                         "d.ID AS DEVICE_ID, " +
+                         "d.NAME AS DEVICE_NAME, " +
+                         "d.DESCRIPTION, " +
+                         "d.DEVICE_IDENTIFICATION, " +
+                         "dd.OS_VERSION, " +
+                         "dd.OS_BUILD_DATE, " +
+                         "e.ID AS ENROLMENT_ID, " +
+                         "e.OWNER, " +
+                         "e.OWNERSHIP, " +
+                         "e.STATUS, " +
+                         "e.DATE_OF_LAST_UPDATE, " +
+                         "e.DATE_OF_ENROLMENT " +
+                         "FROM DM_DEVICE d, " +
+                         "DM_DEVICE_DETAIL dd, " +
+                         "DM_ENROLMENT e, " +
+                         "(SELECT ID, NAME " +
+                         "FROM DM_DEVICE_TYPE " +
+                         "WHERE NAME = ? " +
+                         "AND PROVIDER_TENANT_ID = ?) dt " +
+                         "WHERE dt.ID = d.DEVICE_TYPE_ID " +
+                         "AND d.ID = e.DEVICE_ID " +
+                         "AND d.ID = dd.DEVICE_ID " +
+                         "AND dd.OS_BUILD_DATE < ? " +
+                         "LIMIT ? OFFSET ?";
+
+            try (PreparedStatement ps = conn.prepareStatement(sql)) {
+                int paramIDx = 1;
+                ps.setString(paramIDx++, request.getDeviceType());
+                ps.setInt(paramIDx++, tenantId);
+                ps.setLong(paramIDx++, osBuildDate);
+                ps.setInt(paramIDx++, request.getRowCount());
+                ps.setInt(paramIDx, request.getStartIndex());
+
+                try (ResultSet rs = ps.executeQuery()) {
+                    List<Device> devices = new ArrayList<>();
+                    DeviceInfo deviceInfo = new DeviceInfo();
+                    if (rs.next()) {
+                        Device device = DeviceManagementDAOUtil.loadDevice(rs);
+                        deviceInfo.setOsVersion(rs.getString(Constants.OS_VERSION));
+                        deviceInfo.setOsBuildDate(rs.getString(Constants.OS_BUILD_DATE));
+                        device.setDeviceInfo(deviceInfo);
+                        devices.add(device);
+                    }
+                    return devices;
+                }
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while building or executing queries to retrieve information " +
+                         "of devices with an older OS build date";
+            log.error(msg, e);
+            throw new DeviceManagementDAOException(msg, e);
+        }
+    }
+
+    @Override
+    public int getCountOfDeviceExpiredByOSVersion(String deviceType, long osBuildDate, int tenantId)
+            throws DeviceManagementDAOException {
+        try {
+            Connection conn = getConnection();
+            String sql = "SELECT " +
+                         "COUNT(dd.DEVICE_ID) AS DEVICE_COUNT " +
+                         "FROM DM_DEVICE d, " +
+                         "DM_DEVICE_DETAIL dd, " +
+                         "(SELECT ID " +
+                         "FROM DM_DEVICE_TYPE " +
+                         "WHERE NAME = ? " +
+                         "AND PROVIDER_TENANT_ID = ?) dt " +
+                         "WHERE d.DEVICE_TYPE_ID = dt.ID " +
+                         "AND d.ID = dd.DEVICE_ID " +
+                         "AND dd.OS_BUILD_DATE < ?";
+
+            try (PreparedStatement ps = conn.prepareStatement(sql)) {
+                int paramIdx = 1;
+                ps.setString(paramIdx++, deviceType);
+                ps.setInt(paramIdx++, tenantId);
+                ps.setLong(paramIdx, osBuildDate);
+
+                try (ResultSet rs = ps.executeQuery()) {
+                    int deviceCount = 0;
+                    if (rs.next()) {
+                        deviceCount = rs.getInt("DEVICE_COUNT");
+                    }
+                    return deviceCount;
+                }
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while building or executing queries to retrieve the count " +
+                         "of devices with an older OS build date";
+            log.error(msg, e);
+            throw new DeviceManagementDAOException(msg, e);
+        }
+    }
+
     /***
      * This method removes records of a given list of devices from the DM_DEVICE_DETAIL table
      * @param conn Connection object

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/impl/device/OracleDeviceDAOImpl.java

@@ -24,10 +24,12 @@ import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.device.mgt.common.Count;
 import org.wso2.carbon.device.mgt.common.Device;
 import org.wso2.carbon.device.mgt.common.PaginationRequest;
+import org.wso2.carbon.device.mgt.common.device.details.DeviceInfo;
 import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOException;
 import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOFactory;
 import org.wso2.carbon.device.mgt.core.dao.impl.AbstractDeviceDAOImpl;
 import org.wso2.carbon.device.mgt.core.dao.util.DeviceManagementDAOUtil;
+import org.wso2.carbon.device.mgt.core.report.mgt.Constants;
 
 
 import java.sql.Connection;
@@ -828,6 +830,70 @@ public class OracleDeviceDAOImpl extends AbstractDeviceDAOImpl {
         }
     }
 
+    @Override
+    public List<Device> getDevicesExpiredByOSVersion(PaginationRequest request, int tenantId)
+            throws DeviceManagementDAOException {
+        try {
+            Long osBuildDate = (Long) request.getProperty(Constants.OS_BUILD_DATE);
+            Connection conn = getConnection();
+            String sql = "SELECT " +
+                         "dt.NAME AS DEVICE_TYPE, " +
+                         "d.ID AS DEVICE_ID, " +
+                         "d.NAME AS DEVICE_NAME, " +
+                         "d.DESCRIPTION, " +
+                         "d.DEVICE_IDENTIFICATION, " +
+                         "dd.OS_VERSION, " +
+                         "dd.OS_BUILD_DATE, " +
+                         "e.ID AS ENROLMENT_ID, " +
+                         "e.OWNER, " +
+                         "e.OWNERSHIP, " +
+                         "e.STATUS, " +
+                         "e.DATE_OF_LAST_UPDATE, " +
+                         "e.DATE_OF_ENROLMENT " +
+                         "FROM DM_DEVICE d, " +
+                         "DM_DEVICE_DETAIL dd, " +
+                         "DM_ENROLMENT e, " +
+                         "(SELECT ID, NAME " +
+                         "FROM DM_DEVICE_TYPE " +
+                         "WHERE NAME = ? " +
+                         "AND PROVIDER_TENANT_ID = ?) dt " +
+                         "WHERE dt.ID = d.DEVICE_TYPE_ID " +
+                         "AND d.ID = e.DEVICE_ID " +
+                         "AND d.ID = dd.DEVICE_ID " +
+                         "AND dd.OS_BUILD_DATE < ? " +
+                         "ORDER BY ENROLMENT_ID " +
+                         "OFFSET ? ROWS " +
+                         "FETCH NEXT ? ROWS ONLY";
+
+            try (PreparedStatement ps = conn.prepareStatement(sql)) {
+                int paramIDx = 1;
+                ps.setString(paramIDx++, request.getDeviceType());
+                ps.setInt(paramIDx++, tenantId);
+                ps.setLong(paramIDx++, osBuildDate);
+                ps.setInt(paramIDx++, request.getStartIndex());
+                ps.setInt(paramIDx, request.getRowCount());
+
+                try (ResultSet rs = ps.executeQuery()) {
+                    List<Device> devices = new ArrayList<>();
+                    DeviceInfo deviceInfo = new DeviceInfo();
+                    if (rs.next()) {
+                        Device device = DeviceManagementDAOUtil.loadDevice(rs);
+                        deviceInfo.setOsVersion(rs.getString(Constants.OS_VERSION));
+                        deviceInfo.setOsBuildDate(rs.getString(Constants.OS_BUILD_DATE));
+                        device.setDeviceInfo(deviceInfo);
+                        devices.add(device);
+                    }
+                    return devices;
+                }
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while retrieving information of devices with an older OS date " +
+                         "than the minimum date";
+            log.error(msg, e);
+            throw new DeviceManagementDAOException(msg, e);
+        }
+    }
+
     private Connection getConnection() throws SQLException {
         return DeviceManagementDAOFactory.getConnection();
     }

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/report/mgt/Constants.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ *
+ * WSO2 Inc. licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+
+package org.wso2.carbon.device.mgt.core.report.mgt;
+
+public class Constants {
+
+//    device properties
+    public static final String OS_BUILD_DATE = "OS_BUILD_DATE";
+    public static final String OS_VERSION = "OS_VERSION";
+}

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/report/mgt/ReportManagementServiceImpl.java

@@ -18,6 +18,7 @@
 package org.wso2.carbon.device.mgt.core.report.mgt;
 
 import com.google.gson.JsonObject;
+import org.apache.commons.lang.StringUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.device.mgt.common.Count;
@@ -25,12 +26,14 @@ import org.wso2.carbon.device.mgt.common.Device;
 import org.wso2.carbon.device.mgt.common.exceptions.DeviceManagementException;
 import org.wso2.carbon.device.mgt.common.PaginationRequest;
 import org.wso2.carbon.device.mgt.common.PaginationResult;
+import org.wso2.carbon.device.mgt.common.exceptions.DeviceTypeNotFoundException;
 import org.wso2.carbon.device.mgt.common.exceptions.ReportManagementException;
 import org.wso2.carbon.device.mgt.common.report.mgt.ReportManagementService;
 import org.wso2.carbon.device.mgt.core.dao.DeviceDAO;
 import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOException;
 import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOFactory;
 import org.wso2.carbon.device.mgt.core.dao.util.DeviceManagementDAOUtil;
+import org.wso2.carbon.device.mgt.core.dto.DeviceType;
 import org.wso2.carbon.device.mgt.core.util.DeviceManagerUtil;
 
 import java.sql.SQLException;
@@ -153,6 +156,67 @@ public class ReportManagementServiceImpl implements ReportManagementService {
         }
     }
 
+    @Override
+    public PaginationResult getDevicesExpiredByOSVersion(PaginationRequest request)
+            throws ReportManagementException, DeviceTypeNotFoundException {
+        if (request == null ||
+            StringUtils.isBlank(request.getDeviceType()) ||
+            StringUtils.isBlank(request.getDeviceType()) ||
+            !request.getProperties().containsKey(Constants.OS_BUILD_DATE) ||
+            (Long) request.getProperty(Constants.OS_BUILD_DATE) == 0) {
+
+            String msg = "Error Invalid data received from the request.\n" +
+                         "osBuildDate cannot be null or 0 and device type cannot be null or empty";
+            log.error(msg);
+            throw new ReportManagementException(msg);
+        }
+        try {
+            int tenantId = DeviceManagementDAOUtil.getTenantId();
+            String deviceType = request.getDeviceType();
+            PaginationResult paginationResult = new PaginationResult();
+
+            DeviceManagerUtil.validateDeviceListPageSize(request);
+
+            DeviceType deviceTypeObj = DeviceManagerUtil.getDeviceType(
+                    deviceType, tenantId);
+            if (deviceTypeObj == null) {
+                String msg = "Error, device of type: " + deviceType + " does not exist";
+                log.error(msg);
+                throw new DeviceTypeNotFoundException(msg);
+            }
+
+            try {
+                DeviceManagementDAOFactory.openConnection();
+                List<Device> devices = deviceDAO.getDevicesExpiredByOSVersion(request, tenantId);
+                int deviceCount = deviceDAO.getCountOfDeviceExpiredByOSVersion(
+                        deviceType,
+                        (Long) request.getProperty(Constants.OS_BUILD_DATE),
+                        tenantId);
+                paginationResult.setData(devices);
+                paginationResult.setRecordsFiltered(devices.size());
+                paginationResult.setRecordsTotal(deviceCount);
+
+                return paginationResult;
+            } catch (SQLException e) {
+                String msg = "Error occurred while opening a connection to the data source";
+                log.error(msg, e);
+                throw new ReportManagementException(msg, e);
+            } finally {
+                DeviceManagementDAOFactory.closeConnection();
+            }
+
+        } catch (DeviceManagementDAOException e) {
+            String msg = "Error occurred while retrieving expired devices by a OS build date " +
+                         "for the tenant";
+            log.error(msg, e);
+            throw new ReportManagementException(msg, e);
+        } catch (DeviceManagementException e) {
+            String msg = "Error occurred while validating the request";
+            log.error(msg, e);
+            throw new ReportManagementException(msg, e);
+        }
+    }
+
     //NOTE: This is just a temporary method for retrieving device counts
     public JsonObject buildCount(String start, String end, List<Count> countList) throws ParseException {
         SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/search/mgt/Constants.java

@@ -1,19 +1,19 @@
 /*
- * Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ *   Copyright (c) 2020, Entgra (pvt) Ltd. (http://entgra.io) All Rights Reserved.
  *
- * WSO2 Inc. licenses this file to you under the Apache License,
+ *   Entgra (pvt) Ltd. licenses this file to you under the Apache License,
- * Version 2.0 (the "License"); you may not use this file except
+ *   Version 2.0 (the "License"); you may not use this file except
- * in compliance with the License.
+ *   in compliance with the License.
- * You may obtain a copy of the License at
+ *   You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
- * Unless required by applicable law or agreed to in writing,
+ *   Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
+ *   software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
+ *   KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
+ *   specific language governing permissions and limitations
- * under the License.
+ *   under the License.
  */