Add TaskManagementService for Device Task manager

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/pom.xml

@@ -460,5 +460,15 @@
             <artifactId>io.entgra.device.mgt.core.apimgt.webapp.publisher</artifactId>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>io.entgra.device.mgt.core</groupId>
+            <artifactId>io.entgra.device.mgt.core.task.mgt.core</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.entgra.device.mgt.core</groupId>
+            <artifactId>io.entgra.device.mgt.core.task.mgt.common</artifactId>
+            <scope>provided</scope>
+        </dependency>
     </dependencies>
 </project>

components/device-mgt/io.entgra.device.mgt.core.device.mgt.common/src/main/java/io/entgra/device/mgt/core/device/mgt/common/OperationMonitoringTaskConfig.java

@@ -29,6 +29,15 @@ public class OperationMonitoringTaskConfig {
     private boolean isEnabled;
     private int frequency;
     private List<MonitoringOperation> monitoringOperation = new ArrayList<>();
+    private String cronExpression;
+
+    public String getCronExpression() {
+        return cronExpression;
+    }
+
+    public void setCronExpression(String cronExpression) {
+        this.cronExpression = cronExpression;
+    }
 
     public boolean isEnabled() {
         return isEnabled;

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/pom.xml

@@ -115,7 +115,8 @@
                             org.apache.commons.codec.binary,
                             io.entgra.device.mgt.core.server.bootup.heartbeat.beacon,
                             io.entgra.device.mgt.core.device.mgt.extensions.logger.*,
-                            io.entgra.device.mgt.core.notification.logger.*
+                            io.entgra.device.mgt.core.notification.logger.*,
+                            io.entgra.device.mgt.core.task.mgt.core.*
                         </Import-Package>
                         <Export-Package>
                             !io.entgra.device.mgt.core.device.mgt.core.internal,
@@ -371,6 +372,16 @@
             <groupId>io.entgra.device.mgt.core</groupId>
             <artifactId>io.entgra.device.mgt.core.apimgt.extension.rest.api</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.entgra.device.mgt.core</groupId>
+            <artifactId>io.entgra.device.mgt.core.task.mgt.core</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.entgra.device.mgt.core</groupId>
+            <artifactId>io.entgra.device.mgt.core.task.mgt.common</artifactId>
+            <scope>provided</scope>
+        </dependency>
     </dependencies>
 
 </project>

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/DeviceManagementPluginRepository.java

@@ -18,6 +18,10 @@
 package io.entgra.device.mgt.core.device.mgt.core;
 
 import com.google.gson.Gson;
+import io.entgra.device.mgt.core.device.mgt.core.dto.DeviceTaskManagerWrapper;
+import io.entgra.device.mgt.core.task.mgt.common.bean.DynamicTask;
+import io.entgra.device.mgt.core.task.mgt.common.exception.TaskManagementException;
+import io.entgra.device.mgt.core.task.mgt.common.spi.TaskManagementService;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.context.PrivilegedCarbonContext;
@@ -52,6 +56,7 @@ import io.entgra.device.mgt.core.device.mgt.core.util.DeviceManagerUtil;
 
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 public class DeviceManagementPluginRepository implements DeviceManagerStartupListener {
@@ -299,14 +304,16 @@ public class DeviceManagementPluginRepository implements DeviceManagerStartupLis
                     getDeviceTaskManagerService();
             OperationMonitoringTaskConfig operationMonitoringTaskConfig = deviceManagementService.
                     getOperationMonitoringConfig();
+            DeviceTaskManagerWrapper deviceTaskManagerWrapper = new DeviceTaskManagerWrapper();
+            deviceTaskManagerWrapper.setDeviceType(deviceManagementService.getType());
+            deviceTaskManagerWrapper.setOperationMonitoringTaskConfig(operationMonitoringTaskConfig);
             if (operationMonitoringTaskConfig != null && operationMonitoringTaskConfig.isEnabled()) {
 
                 if (deviceTaskManagerService == null) {
                     DeviceMonitoringOperationDataHolder.getInstance().addOperationMonitoringConfigToMap(
                             deviceManagementService.getType(), operationMonitoringTaskConfig);
                 } else {
-                    deviceTaskManagerService.startTask(deviceManagementService.getType(),
+                    deviceTaskManagerService.startTask(deviceTaskManagerWrapper);
-                            operationMonitoringTaskConfig);
                 }
             }
         } catch (DeviceMgtTaskException e) {
@@ -322,14 +329,24 @@ public class DeviceManagementPluginRepository implements DeviceManagerStartupLis
                     getDeviceTaskManagerService();
             OperationMonitoringTaskConfig operationMonitoringTaskConfig = deviceManagementService.
                     getOperationMonitoringConfig();
+            TaskManagementService taskManagementService= DeviceManagementDataHolder.getInstance().getTaskManagementService();
             if (operationMonitoringTaskConfig != null && operationMonitoringTaskConfig.isEnabled()) {
-                deviceTaskManagerService.stopTask(deviceManagementService.getType(),
+                Map<Integer, List<DynamicTask>> dynamicTasksForAllTenants = taskManagementService.getDynamicTasksForAllTenants();
-                        deviceManagementService.getOperationMonitoringConfig());
+
+                for (Map.Entry<Integer, List<DynamicTask>> entry : dynamicTasksForAllTenants.entrySet()) {
+                    List<DynamicTask> dynamicTasks = entry.getValue();
+                    for (DynamicTask task : dynamicTasks) {
+                        deviceTaskManagerService.stopTask(task.getDynamicTaskId());
+                    }
+                }
             }
         } catch (DeviceMgtTaskException e) {
             throw new DeviceManagementException("Error occurred while removing task service for '" +
                     deviceManagementService.getType() + "'", e);
-        }
+        } catch (TaskManagementException e) {
+            throw new DeviceManagementException("Error occurred while deleting task service for '" +
+                    deviceManagementService.getType() + "'", e);
+    }
     }
 
     private void registerDeviceStatusMonitoringTask(DeviceType deviceType, DeviceManagementService deviceManagementService) throws

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/dto/DeviceTaskManagerWrapper.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2018 - 2024 Entgra (Pvt) Ltd, Inc - All Rights Reserved.
+ *
+ * Unauthorised copying/redistribution of this file, via any medium is strictly prohibited.
+ *
+ * Licensed under the Entgra Commercial License, Version 1.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://entgra.io/licenses/entgra-commercial/1.0
+ *
+ * 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 io.entgra.device.mgt.core.device.mgt.core.dto;
+
+import io.entgra.device.mgt.core.device.mgt.common.OperationMonitoringTaskConfig;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+
+
+@ApiModel(
+        value = "DeviceTaskManagerWrapper",
+        description = "DeviceTaskManagerWrapper represents request payload of scheduling device details retriever task")
+public class DeviceTaskManagerWrapper {
+
+    @ApiModelProperty(name = "cron",
+            value = "Cron to be scheduled",
+            example = "0 0 * * * ? *, 0 0 0/8 * * ? *",
+            required = true)
+    private String cron;
+
+    @ApiModelProperty(name = "payload",
+            value = "Operation payload")
+    private Object payload;
+
+    @ApiModelProperty(name = "deviceType",
+            value = "Device type")
+    private String deviceType;
+
+    public OperationMonitoringTaskConfig getOperationMonitoringTaskConfig() {
+        return operationMonitoringTaskConfig;
+    }
+
+    public void setOperationMonitoringTaskConfig(OperationMonitoringTaskConfig operationMonitoringTaskConfig) {
+        this.operationMonitoringTaskConfig = operationMonitoringTaskConfig;
+    }
+
+    private OperationMonitoringTaskConfig operationMonitoringTaskConfig;
+
+
+    public String getDeviceType() {
+        return deviceType;
+    }
+
+    public void setDeviceType(String deviceType) {
+        this.deviceType = deviceType;
+    }
+
+    public String getCron() {
+        return cron;
+    }
+
+    public void setCron(String cron) {
+        this.cron = cron;
+    }
+
+    public Object getPayload() {
+        return payload;
+    }
+
+    public void setPayload(Object payload) {
+        this.payload = payload;
+    }
+}

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/internal/DeviceManagementDataHolder.java

@@ -23,6 +23,7 @@ import io.entgra.device.mgt.core.apimgt.extension.rest.api.PublisherRESTAPIServi
 import io.entgra.device.mgt.core.device.mgt.common.authorization.GroupAccessAuthorizationService;
 import io.entgra.device.mgt.core.device.mgt.common.metadata.mgt.DeviceStatusManagementService;
 import io.entgra.device.mgt.core.server.bootup.heartbeat.beacon.service.HeartBeatManagementService;
+import io.entgra.device.mgt.core.task.mgt.common.spi.TaskManagementService;
 import org.wso2.carbon.context.PrivilegedCarbonContext;
 import io.entgra.device.mgt.core.device.mgt.common.DeviceStatusTaskPluginConfig;
 import io.entgra.device.mgt.core.device.mgt.common.OperationMonitoringTaskConfig;
@@ -100,6 +101,7 @@ public class DeviceManagementDataHolder {
     private DeviceStatusManagementService deviceStatusManagementService;
     private APIApplicationServices apiApplicationServices;
     private PublisherRESTAPIServices publisherRESTAPIServices;
+    private TaskManagementService taskManagementService;
 
     private final Map<DeviceType, DeviceStatusTaskPluginConfig> deviceStatusTaskPluginConfigs = Collections.synchronizedMap(
             new HashMap<>());
@@ -457,4 +459,12 @@ public class DeviceManagementDataHolder {
     public void setGroupAccessAuthorizationService(GroupAccessAuthorizationService groupAccessAuthorizationService) {
         this.groupAccessAuthorizationService = groupAccessAuthorizationService;
     }
+
+    public TaskManagementService getTaskManagementService() {
+        return taskManagementService;
+    }
+
+    public void setTaskManagementService(TaskManagementService taskManagementService) {
+        this.taskManagementService = taskManagementService;
+    }
 }

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/internal/DeviceTaskManagerServiceComponent.java

@@ -18,6 +18,10 @@
 
 package io.entgra.device.mgt.core.device.mgt.core.internal;
 
+import io.entgra.device.mgt.core.device.mgt.core.dto.DeviceTaskManagerWrapper;
+import io.entgra.device.mgt.core.task.mgt.common.bean.DynamicTask;
+import io.entgra.device.mgt.core.task.mgt.common.exception.TaskManagementException;
+import io.entgra.device.mgt.core.task.mgt.common.spi.TaskManagementService;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.osgi.framework.BundleContext;
@@ -38,8 +42,16 @@ import io.entgra.device.mgt.core.device.mgt.core.status.task.impl.DeviceStatusTa
 import io.entgra.device.mgt.core.device.mgt.core.task.DeviceMgtTaskException;
 import io.entgra.device.mgt.core.device.mgt.core.task.DeviceTaskManagerService;
 import io.entgra.device.mgt.core.device.mgt.core.task.impl.DeviceTaskManagerServiceImpl;
+import org.wso2.carbon.base.MultitenantConstants;
+import org.wso2.carbon.context.PrivilegedCarbonContext;
 import org.wso2.carbon.ntask.core.service.TaskService;
+import org.wso2.carbon.user.api.Tenant;
+import org.wso2.carbon.user.api.UserStoreException;
+import org.wso2.carbon.user.core.service.RealmService;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
 import java.util.Map;
 
 /**
@@ -50,6 +62,12 @@ import java.util.Map;
  * policy="dynamic"
  * bind="setTaskService"
  * unbind="unsetTaskService"
+ * @scr.reference name="io.entgra.task.mgt.service"
+ * interface="io.entgra.device.mgt.core.task.mgt.common.spi.TaskManagementService"
+ * cardinality="1..1"
+ * policy="dynamic"
+ * bind="setTaskMgtService"
+ * unbind="unsetTaskMgtService"
  */
 
 @SuppressWarnings("unused")
@@ -87,14 +105,41 @@ public class DeviceTaskManagerServiceComponent {
         bundleContext.registerService(DeviceTaskManagerService.class, deviceTaskManagerService, null);
         Map<String, OperationMonitoringTaskConfig> deviceConfigMap = DeviceMonitoringOperationDataHolder
                 .getInstance().getOperationMonitoringConfigFromMap();
-        for (String platformType : deviceConfigMap.keySet()) {
+        List<Tenant> tenants = getAllTenants();
-            OperationMonitoringTaskConfig taskConfig = deviceConfigMap.get(platformType);
+        for (Tenant tenant : tenants) {
-            if (taskConfig.isEnabled()) {
+            if (MultitenantConstants.SUPER_TENANT_ID == tenant.getId()) {
-                deviceTaskManagerService.startTask(platformType, taskConfig);
+                startTasksForTenant(deviceConfigMap,deviceTaskManagerService);
+                continue;
+            }
+            try {
+                PrivilegedCarbonContext.startTenantFlow();
+                PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantId(tenant.getId(), true);
+                startTasksForTenant(deviceConfigMap,deviceTaskManagerService);
+            } finally {
+                PrivilegedCarbonContext.endTenantFlow();
             }
         }
     }
 
+    private List<Tenant> getAllTenants() {
+        List<Tenant> tenants = new ArrayList<>();
+        try {
+            RealmService realmService = DeviceManagementDataHolder.getInstance().getRealmService();
+            Tenant[] tenantArray = realmService.getTenantManager().getAllTenants();
+            if (tenantArray != null && tenantArray.length != 0) {
+                tenants.addAll(Arrays.asList(tenantArray));
+            }
+            Tenant superTenant = new Tenant();
+            superTenant.setId(-1234);
+            tenants.add(superTenant);
+            return tenants;
+        } catch (UserStoreException e) {
+            String msg = "Unable to load tenants";
+            log.error(msg, e);
+            return new ArrayList<>();
+        }
+    }
+
     private void startDeviceStatusMonitoringTask(BundleContext bundleContext) {
         DeviceStatusTaskManagerService deviceStatusTaskManagerService = new DeviceStatusTaskManagerServiceImpl();
         DeviceManagementDataHolder.getInstance().setDeviceStatusTaskManagerService(deviceStatusTaskManagerService);
@@ -111,6 +156,18 @@ public class DeviceTaskManagerServiceComponent {
         }
     }
 
+    private void startTasksForTenant(Map<String, OperationMonitoringTaskConfig> deviceConfigMap,DeviceTaskManagerService deviceTaskManagerService) throws DeviceMgtTaskException {
+        DeviceTaskManagerWrapper deviceTaskManagerWrapper = new DeviceTaskManagerWrapper();
+        for (String platformType : deviceConfigMap.keySet()) {
+            deviceTaskManagerWrapper.setDeviceType(platformType);
+            OperationMonitoringTaskConfig taskConfig = deviceConfigMap.get(platformType);
+            deviceTaskManagerWrapper.setOperationMonitoringTaskConfig(taskConfig);
+            if (taskConfig.isEnabled()) {
+                deviceTaskManagerService.startTask(deviceTaskManagerWrapper);
+            }
+        }
+    }
+
     private void startOperationTimeoutTask(BundleContext bundleContext) {
         OperationTimeoutTaskManagerService operationTimeoutTaskManagerService =
                 new OperationTimeoutTaskManagerServiceImpl();
@@ -148,15 +205,19 @@ public class DeviceTaskManagerServiceComponent {
     }
 
     private void stopOperationMonitoringTask()
-            throws DeviceMgtTaskException {
+            throws DeviceMgtTaskException, TaskManagementException {
         DeviceTaskManagerService deviceTaskManagerService = DeviceManagementDataHolder.getInstance()
                 .getDeviceTaskManagerService();
+        TaskManagementService taskManagementService= DeviceManagementDataHolder.getInstance().getTaskManagementService();
         Map<String, OperationMonitoringTaskConfig> deviceConfigMap = DeviceMonitoringOperationDataHolder
                 .getInstance().getOperationMonitoringConfigFromMap();
-        for (String platformType : deviceConfigMap.keySet()) {
+        Map<Integer, List<DynamicTask>> dynamicTasksForAllTenants = taskManagementService.getDynamicTasksForAllTenants();
-            OperationMonitoringTaskConfig taskConfig = deviceConfigMap.get(platformType);
+
-            if (taskConfig.isEnabled()) {
+        for (Map.Entry<Integer, List<DynamicTask>> entry : dynamicTasksForAllTenants.entrySet()) {
-                deviceTaskManagerService.stopTask(platformType, taskConfig);
+            Integer tenantId = entry.getKey();
+            List<DynamicTask> dynamicTasks = entry.getValue();
+            for (DynamicTask task : dynamicTasks) {
+                deviceTaskManagerService.stopTask(task.getDynamicTaskId());
             }
         }
     }
@@ -205,4 +266,20 @@ public class DeviceTaskManagerServiceComponent {
         }
         DeviceManagementDataHolder.getInstance().setTaskService(null);
     }
+
+    @SuppressWarnings("unused")
+    protected void setTaskMgtService(TaskManagementService taskManagementService) {
+        if (log.isDebugEnabled()) {
+            log.debug("Setting the task service");
+        }
+        DeviceManagementDataHolder.getInstance().setTaskManagementService(taskManagementService);
+    }
+
+    @SuppressWarnings("unused")
+    protected void unsetTaskMgtService(TaskManagementService taskManagementService) {
+        if (log.isDebugEnabled()) {
+            log.debug("Removing the task service");
+        }
+        DeviceManagementDataHolder.getInstance().setTaskManagementService(null);
+    }
 }

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/task/DeviceTaskManagerService.java

@@ -19,33 +19,34 @@
 
 package io.entgra.device.mgt.core.device.mgt.core.task;
 
-import io.entgra.device.mgt.core.device.mgt.common.OperationMonitoringTaskConfig;
+import io.entgra.device.mgt.core.device.mgt.core.dto.DeviceTaskManagerWrapper;
+import io.entgra.device.mgt.core.task.mgt.common.exception.TaskManagementException;
+import io.entgra.device.mgt.core.task.mgt.common.exception.TaskNotFoundException;
 
 public interface DeviceTaskManagerService {
 
     /**
      * This method will start the task.
-     * @param operationMonitoringTaskConfig - OperationMonitoringTaskConfig
+     * @param deviceTaskManagerWrapper - DeviceTaskManagerWrapper
      * @throws DeviceMgtTaskException
      */
-    void startTask(String deviceType, OperationMonitoringTaskConfig operationMonitoringTaskConfig)
+    void startTask(DeviceTaskManagerWrapper deviceTaskManagerWrapper)
             throws DeviceMgtTaskException;
 
     /**
      * This method will stop the task.
-     * @param operationMonitoringTaskConfig - OperationMonitoringTaskConfig
      * @throws DeviceMgtTaskException
      */
-    void stopTask(String deviceType, OperationMonitoringTaskConfig operationMonitoringTaskConfig)
+    void stopTask(int taskId)
             throws DeviceMgtTaskException;
 
     /**
      * This will update the task frequency which it runs.
-     * @param operationMonitoringTaskConfig - OperationMonitoringTaskConfig
+     * @param deviceTaskManagerWrapper - DeviceTaskManagerWrapper
      * @throws DeviceMgtTaskException
      */
-    void updateTask(String deviceType, OperationMonitoringTaskConfig operationMonitoringTaskConfig)
+    void updateTask(int taskId,DeviceTaskManagerWrapper deviceTaskManagerWrapper)
-            throws DeviceMgtTaskException;
+            throws DeviceMgtTaskException, TaskNotFoundException, TaskManagementException;
 
 
 }

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/task/impl/DeviceDetailsRetrieverTask.java

@@ -20,19 +20,19 @@ package io.entgra.device.mgt.core.device.mgt.core.task.impl;
 
 import io.entgra.device.mgt.core.device.mgt.common.exceptions.MetadataManagementException;
 import io.entgra.device.mgt.core.device.mgt.core.task.Utils;
+import io.entgra.device.mgt.core.task.mgt.common.bean.DynamicTask;
+import io.entgra.device.mgt.core.task.mgt.common.constant.TaskMgtConstants;
+import io.entgra.device.mgt.core.task.mgt.common.exception.TaskManagementException;
+import org.apache.commons.lang.StringUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import org.wso2.carbon.base.MultitenantConstants;
-import org.wso2.carbon.context.PrivilegedCarbonContext;
 import io.entgra.device.mgt.core.device.mgt.common.OperationMonitoringTaskConfig;
 import io.entgra.device.mgt.core.device.mgt.common.StartupOperationConfig;
-import io.entgra.device.mgt.core.device.mgt.common.exceptions.DeviceManagementException;
 import io.entgra.device.mgt.core.device.mgt.core.internal.DeviceManagementDataHolder;
 import io.entgra.device.mgt.core.device.mgt.core.service.DeviceManagementProviderService;
 import io.entgra.device.mgt.core.device.mgt.core.task.DeviceMgtTaskException;
 import io.entgra.device.mgt.core.device.mgt.core.task.DeviceTaskManager;
-
+import org.wso2.carbon.context.PrivilegedCarbonContext;
-import java.util.List;
 
 public class DeviceDetailsRetrieverTask extends DynamicPartitionedScheduleTask {
 
@@ -42,44 +42,62 @@ public class DeviceDetailsRetrieverTask extends DynamicPartitionedScheduleTask {
 
     @Override
     public void executeDynamicTask() {
-        deviceType = getProperty("DEVICE_TYPE");
+        String taskId = getProperty(TaskMgtConstants.Task.DYNAMIC_TASK_ID);
+        String taskName = getProperty(TaskMgtConstants.Task.LOCAL_TASK_NAME);
+
+        if (StringUtils.isEmpty(taskId)) {
+            log.warn("Not executing the task as Task ID is undefined");
+            if (log.isDebugEnabled()) {
+                log.debug("[Undefined Task] Task Name: " + taskName);
+            }
+            return;
+        }
+
+        DynamicTask dynamicTask;
+        try {
+            dynamicTask = DeviceManagementDataHolder.getInstance().getTaskManagementService()
+                    .getDynamicTask(Integer.parseInt(taskId));
+        } catch (TaskManagementException e) {
+            log.error("Task [" + taskId + "] " + taskName
+                    + " won't execute as unable to get task management service.", e);
+            return;
+        }
+
+        if (dynamicTask == null) {
+            log.error("Task [" + taskId + "] " + taskName
+                    + " won't execute as definition not available in the database.");
+            return;
+        }
+
+        deviceType = dynamicTask.getProperties().get("DEVICE_TYPE");
+        int tenantId = dynamicTask.getTenantId();
+
         deviceManagementProviderService = DeviceManagementDataHolder.getInstance()
                 .getDeviceManagementProvider();
         OperationMonitoringTaskConfig operationMonitoringTaskConfig = deviceManagementProviderService
                 .getDeviceMonitoringConfig(deviceType);
         StartupOperationConfig startupOperationConfig = deviceManagementProviderService
                 .getStartupOperationConfig(deviceType);
-        this.executeForAllTenants(operationMonitoringTaskConfig, startupOperationConfig);
+        this.executeForATenant(operationMonitoringTaskConfig, startupOperationConfig, tenantId);
     }
 
-    private void executeForAllTenants(OperationMonitoringTaskConfig operationMonitoringTaskConfig,
+    private void executeForATenant(OperationMonitoringTaskConfig operationMonitoringTaskConfig,
-                                      StartupOperationConfig startupOperationConfig) {
+                                      StartupOperationConfig startupOperationConfig,int tenantId) {
 
         if (log.isDebugEnabled()) {
-            log.debug("Device details retrieving task started to run for all tenants.");
+            log.debug("Device details retrieving task started to run for tenant " + tenantId);
         }
         try {
-            List<Integer> tenants = DeviceManagementDataHolder.getInstance().
+            try {
-                    getDeviceManagementProvider().getDeviceEnrolledTenants();
+                PrivilegedCarbonContext.startTenantFlow();
-            if (log.isDebugEnabled()) {
+                PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantId(tenantId, true);
-                log.debug("Task is running for " + tenants.size() + " tenants and the device type is " + deviceType);
+                this.executeTask(operationMonitoringTaskConfig, startupOperationConfig, Utils.getTenantedTaskFrequency(tenantId, deviceType));
+            } finally {
+                PrivilegedCarbonContext.endTenantFlow();
             }
-            for (Integer tenant : tenants) {
+            if (log.isDebugEnabled()) {
-                if (MultitenantConstants.SUPER_TENANT_ID == tenant) {
+                log.debug("Task is running for " + tenantId+ " tenants and the device type is " + deviceType);
-                    this.executeTask(operationMonitoringTaskConfig, startupOperationConfig, Utils.getTenantedTaskFrequency(MultitenantConstants.SUPER_TENANT_ID, deviceType));
-                    continue;
-                }
-                try {
-                    PrivilegedCarbonContext.startTenantFlow();
-                    PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantId(tenant, true);
-                    this.executeTask(operationMonitoringTaskConfig, startupOperationConfig, Utils.getTenantedTaskFrequency(tenant, deviceType));
-                } finally {
-                    PrivilegedCarbonContext.endTenantFlow();
-                }
             }
-        } catch (DeviceManagementException e) {
-            log.error("Error occurred while trying to get the available tenants " +
-                    "from device manager provider service.", e);
         } catch (MetadataManagementException e) {
             String msg = "Error occurred while getting task frequency metadata entry.";
             log.error(msg, e);

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/task/impl/DeviceTaskManagerServiceImpl.java

@@ -20,17 +20,17 @@
 package io.entgra.device.mgt.core.device.mgt.core.task.impl;
 
 import com.google.gson.Gson;
+import io.entgra.device.mgt.core.device.mgt.core.dto.DeviceTaskManagerWrapper;
+import io.entgra.device.mgt.core.task.mgt.common.bean.DynamicTask;
+import io.entgra.device.mgt.core.task.mgt.common.exception.TaskManagementException;
+import io.entgra.device.mgt.core.task.mgt.common.exception.TaskNotFoundException;
+import io.entgra.device.mgt.core.task.mgt.common.spi.TaskManagementService;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.context.PrivilegedCarbonContext;
-import io.entgra.device.mgt.core.device.mgt.common.OperationMonitoringTaskConfig;
 import io.entgra.device.mgt.core.device.mgt.core.internal.DeviceManagementDataHolder;
 import io.entgra.device.mgt.core.device.mgt.core.task.DeviceMgtTaskException;
 import io.entgra.device.mgt.core.device.mgt.core.task.DeviceTaskManagerService;
-import org.wso2.carbon.ntask.common.TaskException;
-import org.wso2.carbon.ntask.core.TaskInfo;
-import org.wso2.carbon.ntask.core.TaskManager;
-import org.wso2.carbon.ntask.core.service.TaskService;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -39,122 +39,77 @@ public class DeviceTaskManagerServiceImpl implements DeviceTaskManagerService {
 
     public static final String TASK_TYPE = "DEVICE_MONITORING";
     public static final String TENANT_ID = "TENANT_ID";
-    private static String TASK_CLASS = "io.entgra.device.mgt.core.device.mgt.core.task.impl.DeviceDetailsRetrieverTask";
+    public static final String SCHEDULED_BY = "SCHEDULED_BY";
+    public static final String SCHEDULED_ON = "SCHEDULED_ON";
+    public static final String DEVICE_TYPE = "DEVICE_TYPE";
+    public static final String OPPCONFIG = "OPPCONFIG";
+    private final TaskManagementService taskManagementService = DeviceManagementDataHolder.getInstance().getTaskManagementService();;
 
 
-//    private DeviceTaskManager deviceTaskManager;
 
     private static Log log = LogFactory.getLog(DeviceTaskManagerServiceImpl.class);
 
     @Override
-    public void startTask(String deviceType, OperationMonitoringTaskConfig operationMonitoringTaskConfig)
+    public void startTask(DeviceTaskManagerWrapper deviceTaskManagerWrapper)
             throws DeviceMgtTaskException {
 
-        log.info("Task adding for " + deviceType);
-
-        int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
         try {
-            TaskService taskService = DeviceManagementDataHolder.getInstance().getTaskService();
+            PrivilegedCarbonContext carbonContext = PrivilegedCarbonContext.getThreadLocalCarbonContext();
-            taskService.registerTaskType(TASK_TYPE);
-
-            if (log.isDebugEnabled()) {
-                log.debug("Device details retrieving task is started for the tenant id " + tenantId);
-                //                log.debug("Device details retrieving task is at frequency of : " + deviceTaskManager
-                //                        .getTaskFrequency());
-                log.debug(
-                        "Device details retrieving task is at frequency of : " + operationMonitoringTaskConfig
-                                .getFrequency());
-            }
-
-            TaskManager taskManager = taskService.getTaskManager(TASK_TYPE);
-
-            TaskInfo.TriggerInfo triggerInfo = new TaskInfo.TriggerInfo();
-            //            triggerInfo.setIntervalMillis(deviceTaskManager.getTaskFrequency());
-            triggerInfo.setIntervalMillis(operationMonitoringTaskConfig.getFrequency());
-            triggerInfo.setRepeatCount(-1);
-
             Gson gson = new Gson();
-            String operationConfigs = gson.toJson(operationMonitoringTaskConfig);
+            String operationConfigs = gson.toJson(deviceTaskManagerWrapper.getOperationMonitoringTaskConfig());
-
+            Map<String, String> taskProperties = new HashMap<>();
-            Map<String, String> properties = new HashMap<>();
+            taskProperties.put(TENANT_ID,String.valueOf(carbonContext.getTenantId()));
-
+            taskProperties.put(SCHEDULED_BY,carbonContext.getUsername());
-            properties.put(TENANT_ID, String.valueOf(tenantId));
+            taskProperties.put(SCHEDULED_ON,String.valueOf(System.currentTimeMillis()));
-            properties.put("DEVICE_TYPE", deviceType);
+            taskProperties.put(DEVICE_TYPE, deviceTaskManagerWrapper.getDeviceType());
-            properties.put("OPPCONFIG", operationConfigs);
+            taskProperties.put(TASK_TYPE,TASK_TYPE);
-
+            taskProperties.put(OPPCONFIG,operationConfigs);
-            String taskName = deviceType + String.valueOf(tenantId);
+
-
+            DynamicTask dynamicTask = new DynamicTask();
-            if (!taskManager.isTaskScheduled(deviceType)) {
+            dynamicTask.setTaskClassName(DeviceDetailsRetrieverTask.class.getName());
-
+            dynamicTask.setCronExpression(deviceTaskManagerWrapper.getOperationMonitoringTaskConfig().getCronExpression());
-                TaskInfo taskInfo = new TaskInfo(taskName, TASK_CLASS, properties, triggerInfo);
+            dynamicTask.setEnabled(true);
-
+            dynamicTask.setName(deviceTaskManagerWrapper.getDeviceType() + carbonContext.getTenantId());
-                taskManager.registerTask(taskInfo);
+            dynamicTask.setProperties(taskProperties);
-                taskManager.rescheduleTask(taskInfo.getName());
+            if(!taskManagementService.isTaskExist(dynamicTask.getName())){
-            } else {
+                taskManagementService.createTask(dynamicTask);
-                throw new DeviceMgtTaskException(
-                        "Device details retrieving task is already started for this tenant " + tenantId);
             }
-
+            log.info("Task adding for " + deviceTaskManagerWrapper.getDeviceType() + " tenant " + carbonContext.getTenantId());
-        } catch (TaskException e) {
+        } catch (TaskManagementException e) {
-            throw new DeviceMgtTaskException("Error occurred while creating the task for tenant " + tenantId,
+            throw new DeviceMgtTaskException("Error occurred while creating the task for tenant ", e);
-                    e);
         }
-
     }
 
     @Override
-    public void stopTask(String deviceType, OperationMonitoringTaskConfig operationMonitoringTaskConfig)
+    public void stopTask(int taskId)
             throws DeviceMgtTaskException {
-
         try {
-            int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
+            taskManagementService.deleteTask(taskId);
-            TaskService taskService = DeviceManagementDataHolder.getInstance().getTaskService();
+        } catch (TaskManagementException e) {
-            if (taskService != null && taskService.isServerInit()) {
+            String msg = "Error occurred while retrieving task manager to delete task '" + taskId + "'";
-                TaskManager taskManager = taskService.getTaskManager(TASK_TYPE);
+            log.error(msg);
-                String taskName = deviceType +  tenantId;
+            throw new DeviceMgtTaskException(msg, e);
-                taskManager.deleteTask(taskName);
+        } catch (TaskNotFoundException e) {
-            }
+            String msg = "Task '" + taskId + "' not found while deleting the task";
-        } catch (TaskException e) {
+            log.error(msg, e);
-            int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
+            throw new DeviceMgtTaskException(msg, e);
-            throw new DeviceMgtTaskException("Error occurred while deleting the task for tenant " + tenantId,
-                    e);
         }
-
     }
 
     @Override
-    public void updateTask(String deviceType, OperationMonitoringTaskConfig operationMonitoringTaskConfig)
+    public void updateTask(int taskId, DeviceTaskManagerWrapper deviceTaskManagerWrapper)
-            throws DeviceMgtTaskException {
+            throws DeviceMgtTaskException, TaskNotFoundException, TaskManagementException {
-
-        int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
-        //        deviceTaskManager = new DeviceTaskManagerImpl();
         try {
-            TaskService taskService = DeviceManagementDataHolder.getInstance().getTaskService();
+        DynamicTask dynamicTask = taskManagementService.getDynamicTask(taskId);
-            TaskManager taskManager = taskService.getTaskManager(TASK_TYPE);
+        dynamicTask.setEnabled(true);
-
+        dynamicTask.setCronExpression(deviceTaskManagerWrapper.getCron());
-            if (taskManager.isTaskScheduled(deviceType)) {
+        taskManagementService.updateTask(taskId,dynamicTask);
-                String taskName = deviceType + tenantId;
+        } catch (TaskManagementException e) {
-                taskManager.deleteTask(taskName);
+            String msg = "Error occurred while updating task '" + taskId + "'";
-                TaskInfo.TriggerInfo triggerInfo = new TaskInfo.TriggerInfo();
+            log.error(msg);
-                triggerInfo.setIntervalMillis(operationMonitoringTaskConfig.getFrequency());
+        } catch (TaskNotFoundException e) {
-                triggerInfo.setRepeatCount(-1);
+            String msg = "Task '" + taskId + "' not found while updating the task";
-
+            log.error(msg, e);
-                Map<String, String> properties = new HashMap<>();
-                properties.put(TENANT_ID, String.valueOf(tenantId));
-
-                TaskInfo taskInfo = new TaskInfo(taskName, TASK_CLASS, properties, triggerInfo);
-
-                taskManager.registerTask(taskInfo);
-                taskManager.rescheduleTask(taskInfo.getName());
-            } else {
-                throw new DeviceMgtTaskException(
-                        "Device details retrieving task has not been started for this tenant " +
-                                tenantId + ". Please start the task first.");
-            }
-
-        } catch (TaskException e) {
-            throw new DeviceMgtTaskException("Error occurred while updating the task for tenant " + tenantId,
-                    e);
         }
     }
 }

components/device-mgt/io.entgra.device.mgt.core.device.mgt.extensions/src/main/java/io/entgra/device/mgt/core/device/mgt/extensions/device/type/template/DeviceTypeManagerService.java

@@ -131,6 +131,7 @@ public class DeviceTypeManagerService implements DeviceManagementService {
         if (taskConfiguration != null) {
             operationMonitoringConfigs.setEnabled(taskConfiguration.isEnabled());
             operationMonitoringConfigs.setFrequency(taskConfiguration.getFrequency());
+            operationMonitoringConfigs.setCronExpression(taskConfiguration.getCronExpression());
             List<TaskConfiguration.Operation> ops = taskConfiguration.getOperations();
             if (ops != null && !ops.isEmpty()) {
                 monitoringOperations = new ArrayList<>();

components/device-mgt/io.entgra.device.mgt.core.device.mgt.extensions/src/main/java/io/entgra/device/mgt/core/device/mgt/extensions/device/type/template/config/TaskConfiguration.java

@@ -32,6 +32,16 @@ public class TaskConfiguration {
     private boolean enabled;
     private int frequency;
     private List<Operation> operations;
+    private String cronExpression;
+
+    @XmlElement(name = "cronExpression", required = true)
+    public String getCronExpression() {
+        return cronExpression;
+    }
+
+    public void setCronExpression(String cronExpression) {
+        this.cronExpression = cronExpression;
+    }
 
     @XmlElement(name = "Enable", required = true)
     public boolean isEnabled() {

components/task-mgt/task-manager/io.entgra.device.mgt.core.task.mgt.common/src/main/java/io/entgra/device/mgt/core/task/mgt/common/spi/TaskManagementService.java

@@ -43,4 +43,6 @@ public interface TaskManagementService {
     DynamicTask getDynamicTask(int dynamicTaskId) throws TaskManagementException;
 
     List<DynamicTask> getActiveDynamicTasks() throws TaskManagementException;
+
+    boolean isTaskExist(String taskName) throws TaskManagementException;
 }

components/task-mgt/task-manager/io.entgra.device.mgt.core.task.mgt.core/src/main/java/io/entgra/device/mgt/core/task/mgt/core/dao/DynamicTaskDAO.java

@@ -41,4 +41,6 @@ public interface DynamicTaskDAO {
 
     List<DynamicTask> getActiveDynamicTasks(int tenantId) throws TaskManagementDAOException;
 
+    boolean isTaskExist(String taskName, int tenantId) throws TaskManagementDAOException;
+
 }

components/task-mgt/task-manager/io.entgra.device.mgt.core.task.mgt.core/src/main/java/io/entgra/device/mgt/core/task/mgt/core/dao/impl/DynamicTaskDAOImpl.java

@@ -200,4 +200,27 @@ public class DynamicTaskDAOImpl implements DynamicTaskDAO {
         return dynamicTasks;
     }
 
+    @Override
+    public boolean isTaskExist(String taskName, int tenantId) throws TaskManagementDAOException {
+        PreparedStatement stmt;
+        ResultSet rs;
+        try {
+            Connection conn = TaskManagementDAOFactory.getConnection();
+            String sql = "SELECT COUNT(*) FROM DYNAMIC_TASK WHERE NAME = ? AND TENANT_ID = ?";
+            stmt = conn.prepareStatement(sql);
+            stmt.setString(1, taskName);
+            stmt.setInt(2, tenantId);
+            rs = stmt.executeQuery();
+
+            if (rs.next()) {
+                return rs.getInt(1) > 0;
+            }
+            return false;
+        } catch (SQLException e) {
+            String msg = "Error occurred while checking if task '" + taskName + "' exists";
+            log.error(msg, e);
+            throw new TaskManagementDAOException(msg, e);
+        }
+    }
+
 }

components/task-mgt/task-manager/io.entgra.device.mgt.core.task.mgt.core/src/main/java/io/entgra/device/mgt/core/task/mgt/core/service/TaskManagementServiceImpl.java

@@ -93,8 +93,11 @@ public class TaskManagementServiceImpl implements TaskManagementService {
             dynamicTaskPropDAO.addTaskProperties(dynamicTaskId, dynamicTask.getProperties(), tenantId);
 
             try {
-                serverHashIdx = TaskManagerDataHolder.getInstance().getHeartBeatService()
+                serverHashIdx = 0;
-                        .getServerCtxInfo().getLocalServerHashIdx();
+                if(TaskManagerDataHolder.getInstance().getHeartBeatService().isTaskPartitioningEnabled()){
+                    serverHashIdx = TaskManagerDataHolder.getInstance().getHeartBeatService()
+                            .getServerCtxInfo().getLocalServerHashIdx();
+                }
                 nTaskName = TaskManagementUtil.generateNTaskName(dynamicTaskId, serverHashIdx);
             } catch (HeartBeatManagementException e) {
                 String msg = "Unexpected exception when getting server hash index.";
@@ -136,7 +139,13 @@ public class TaskManagementServiceImpl implements TaskManagementService {
             String msg = "Error occurred while scheduling task '" + dynamicTask.getName() + "'";
             log.error(msg, e);
             throw new TaskManagementException(msg, e);
-        } finally {
+        } catch (Exception e) {
+            TaskManagementDAOFactory.rollbackTransaction();
+            String msg = "Unexpected error occurred while scheduling task '" + dynamicTask.getName() + "'";
+            log.error(msg, e);
+            throw new TaskManagementException(msg, e);
+        }
+        finally {
             TaskManagementDAOFactory.closeConnection();
         }
     }
@@ -430,6 +439,28 @@ public class TaskManagementServiceImpl implements TaskManagementService {
         return dynamicTasks;
     }
 
+    @Override
+    public boolean isTaskExist(String taskName) throws TaskManagementException {
+        int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
+        try {
+            TaskManagementDAOFactory.beginTransaction();
+            if (log.isDebugEnabled()) {
+                log.debug("Fetching the details of all active dynamic tasks");
+            }
+            boolean taskExists = dynamicTaskDAO.isTaskExist(taskName, tenantId);
+            TaskManagementDAOFactory.commitTransaction();
+            return taskExists;
+        } catch (TaskManagementDAOException e) {
+            String msg = "Error occurred while fetching all active dynamic tasks";
+            log.error(msg, e);
+            throw new TaskManagementException(msg, e);
+        } catch (TransactionManagementException e) {
+            throw new RuntimeException(e);
+        } finally {
+            TaskManagementDAOFactory.closeConnection();
+        }
+    }
+
     // check whether task exist in the ntask core
     private boolean isTaskExists(String taskName) throws TaskManagementException, TaskException {
         if (StringUtils.isEmpty(taskName)) {

components/tenant-mgt/io.entgra.device.mgt.core.tenant.mgt.common/src/main/java/io/entgra/device/mgt/core/tenant/mgt/common/spi/TenantManagerService.java

@@ -29,4 +29,5 @@ public interface TenantManagerService {
     void addDefaultDeviceTaskConfiguration(TenantInfoBean tenantInfoBean) throws TenantMgtException;
     void deleteTenantApplicationData(int tenantId) throws TenantMgtException;
     void deleteTenantDeviceData(int tenantId) throws TenantMgtException;
+    void addDeviceDetailsRetrieverTask(TenantInfoBean tenantInfoBean) throws TenantMgtException;
 }

components/tenant-mgt/io.entgra.device.mgt.core.tenant.mgt.core/pom.xml

@@ -68,7 +68,11 @@
                             io.entgra.device.mgt.core.device.mgt.core.config,
                             io.entgra.device.mgt.core.device.mgt.core.dao.*,
                             org.wso2.carbon.user.core.service,
-                            org.wso2.carbon.context
+                            org.wso2.carbon.context,
+                            io.entgra.device.mgt.core.device.mgt.common.spi.*,
+                            io.entgra.device.mgt.core.device.mgt.core.service.*,
+                            io.entgra.device.mgt.core.device.mgt.core.task.*,
+                            io.entgra.device.mgt.core.device.mgt.core.dto.*
                         </Import-Package>
                         <Export-Package>
                             !io.entgra.device.mgt.core.tenant.mgt.core.internal,

components/tenant-mgt/io.entgra.device.mgt.core.tenant.mgt.core/src/main/java/io/entgra/device/mgt/core/tenant/mgt/core/TenantManager.java

@@ -17,6 +17,7 @@
  */
 package io.entgra.device.mgt.core.tenant.mgt.core;
 
+import io.entgra.device.mgt.core.device.mgt.core.task.DeviceMgtTaskException;
 import io.entgra.device.mgt.core.tenant.mgt.common.exception.TenantMgtException;
 import org.wso2.carbon.stratos.common.beans.TenantInfoBean;
 
@@ -64,4 +65,11 @@ public interface TenantManager {
      * @throws TenantMgtException Throws when deleting Tenant related device data
      */
     void deleteTenantDeviceData(int tenantId) throws TenantMgtException;
+
+    /**
+     * Add deviceDetailsRetrieverTask of a tenant
+     * @param tenantInfoBean ID of the tenant
+     * @throws TenantMgtException Throws when deleting Tenant related device data
+     */
+    void addDeviceDetailsRetrieverTask(TenantInfoBean tenantInfoBean) throws TenantMgtException;
 }

components/tenant-mgt/io.entgra.device.mgt.core.tenant.mgt.core/src/main/java/io/entgra/device/mgt/core/tenant/mgt/core/impl/TenantManagerImpl.java

@@ -20,10 +20,15 @@ package io.entgra.device.mgt.core.tenant.mgt.core.impl;
 import io.entgra.device.mgt.core.application.mgt.common.exception.ApplicationManagementException;
 import io.entgra.device.mgt.core.application.mgt.core.config.ConfigurationManager;
 import io.entgra.device.mgt.core.application.mgt.common.services.ApplicationManager;
+import io.entgra.device.mgt.core.device.mgt.common.exceptions.DeviceManagementException;
 import io.entgra.device.mgt.core.device.mgt.common.exceptions.TransactionManagementException;
 import io.entgra.device.mgt.core.device.mgt.core.dao.DeviceManagementDAOException;
 import io.entgra.device.mgt.core.device.mgt.core.dao.DeviceManagementDAOFactory;
 import io.entgra.device.mgt.core.device.mgt.core.dao.TenantDAO;
+import io.entgra.device.mgt.core.device.mgt.core.dto.DeviceTaskManagerWrapper;
+import io.entgra.device.mgt.core.device.mgt.core.dto.DeviceType;
+import io.entgra.device.mgt.core.device.mgt.core.service.DeviceManagementProviderService;
+import io.entgra.device.mgt.core.device.mgt.core.task.DeviceMgtTaskException;
 import io.entgra.device.mgt.core.tenant.mgt.core.TenantManager;
 import io.entgra.device.mgt.core.tenant.mgt.common.exception.TenantMgtException;
 import io.entgra.device.mgt.core.tenant.mgt.core.internal.TenantMgtDataHolder;
@@ -42,7 +47,6 @@ import io.entgra.device.mgt.core.device.mgt.common.roles.config.Role;
 import org.wso2.carbon.user.api.UserStoreException;
 import org.wso2.carbon.user.api.UserStoreManager;
 
-import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -231,6 +235,31 @@ public class TenantManagerImpl implements TenantManager {
 
     }
 
+    @Override
+    public void addDeviceDetailsRetrieverTask(TenantInfoBean tenantInfoBean) throws TenantMgtException{
+        initTenantFlow(tenantInfoBean);
+        try {
+            DeviceManagementProviderService dms = TenantMgtDataHolder.getInstance().getDeviceManagementProvider();
+            List<DeviceType> deviceTypes = dms.getDeviceTypes();
+            DeviceTaskManagerWrapper deviceTaskManagerWrapper = new DeviceTaskManagerWrapper();
+            for (DeviceType deviceType : deviceTypes) {
+                deviceTaskManagerWrapper.setDeviceType(deviceType.getName());
+                deviceTaskManagerWrapper.setOperationMonitoringTaskConfig(dms.getDeviceMonitoringConfig(deviceType.getName()));
+                TenantMgtDataHolder.getInstance().getDeviceTaskManagerService().startTask(deviceTaskManagerWrapper);
+            }
+        } catch (DeviceMgtTaskException e) {
+            String msg = "Error occurred while adding default TaskFrequencies";
+            log.error(msg, e);
+            throw new TenantMgtException(msg, e);
+        } catch (DeviceManagementException e) {
+            String msg = "Error occurred while getting DeviceManagementService";
+            log.error(msg, e);
+            throw new TenantMgtException(msg, e);
+        } finally {
+            endTenantFlow();
+        }
+    }
+
     private void initTenantFlow(TenantInfoBean tenantInfoBean) {
         PrivilegedCarbonContext.startTenantFlow();
         PrivilegedCarbonContext privilegedCarbonContext = PrivilegedCarbonContext.getThreadLocalCarbonContext();

components/tenant-mgt/io.entgra.device.mgt.core.tenant.mgt.core/src/main/java/io/entgra/device/mgt/core/tenant/mgt/core/impl/TenantManagerServiceImpl.java

@@ -53,4 +53,9 @@ public class TenantManagerServiceImpl implements TenantManagerService {
     public void deleteTenantDeviceData(int tenantId) throws TenantMgtException {
         TenantMgtDataHolder.getInstance().getTenantManager().deleteTenantDeviceData(tenantId);
     }
+
+    @Override
+    public void addDeviceDetailsRetrieverTask(TenantInfoBean tenantInfoBean) throws TenantMgtException {
+        TenantMgtDataHolder.getInstance().getTenantManager().addDeviceDetailsRetrieverTask(tenantInfoBean);
+    }
 }

components/tenant-mgt/io.entgra.device.mgt.core.tenant.mgt.core/src/main/java/io/entgra/device/mgt/core/tenant/mgt/core/internal/TenantMgtDataHolder.java

@@ -20,6 +20,9 @@ package io.entgra.device.mgt.core.tenant.mgt.core.internal;
 import io.entgra.device.mgt.core.application.mgt.common.services.ApplicationManager;
 import io.entgra.device.mgt.core.device.mgt.common.metadata.mgt.DeviceStatusManagementService;
 import io.entgra.device.mgt.core.device.mgt.common.metadata.mgt.DeviceTaskConfigurationService;
+import io.entgra.device.mgt.core.device.mgt.common.spi.DeviceManagementService;
+import io.entgra.device.mgt.core.device.mgt.core.service.DeviceManagementProviderService;
+import io.entgra.device.mgt.core.device.mgt.core.task.DeviceTaskManagerService;
 import io.entgra.device.mgt.core.tenant.mgt.core.TenantManager;
 import io.entgra.device.mgt.core.device.mgt.common.metadata.mgt.WhiteLabelManagementService;
 import org.wso2.carbon.user.core.service.RealmService;
@@ -37,6 +40,12 @@ public class TenantMgtDataHolder {
     private DeviceStatusManagementService deviceStatusManagementService;
     private DeviceTaskConfigurationService deviceTaskConfigurationService;
 
+    private DeviceTaskManagerService deviceTaskManagerService;
+
+    private DeviceManagementService deviceManagementService;
+
+    private DeviceManagementProviderService deviceManagerProvider;
+
     public RealmService getRealmService() {
         return realmService;
     }
@@ -45,6 +54,30 @@ public class TenantMgtDataHolder {
         this.realmService = realmService;
     }
 
+    public DeviceTaskManagerService getDeviceTaskManagerService() {
+        return deviceTaskManagerService;
+    }
+
+    public void setDeviceTaskManagerService(DeviceTaskManagerService deviceTaskManagerService) {
+        this.deviceTaskManagerService = deviceTaskManagerService;
+    }
+
+    public DeviceManagementService getDeviceManagementService() {
+        return deviceManagementService;
+    }
+
+    public void setDeviceManagementService(DeviceManagementService deviceManagementService) {
+        this.deviceManagementService = deviceManagementService;
+    }
+
+    public DeviceManagementProviderService getDeviceManagementProvider() {
+        return deviceManagerProvider;
+    }
+
+    public void setDeviceManagementProvider(DeviceManagementProviderService deviceManagerProvider) {
+        this.deviceManagerProvider = deviceManagerProvider;
+    }
+
     public ApplicationManager getApplicationManager() {
         return applicationManager;
     }

components/tenant-mgt/io.entgra.device.mgt.core.tenant.mgt.core/src/main/java/io/entgra/device/mgt/core/tenant/mgt/core/internal/TenantMgtServiceComponent.java

@@ -20,8 +20,11 @@ package io.entgra.device.mgt.core.tenant.mgt.core.internal;
 import io.entgra.device.mgt.core.application.mgt.common.services.ApplicationManager;
 import io.entgra.device.mgt.core.device.mgt.common.metadata.mgt.DeviceStatusManagementService;
 import io.entgra.device.mgt.core.device.mgt.common.metadata.mgt.DeviceTaskConfigurationService;
+import io.entgra.device.mgt.core.device.mgt.core.internal.DeviceManagementDataHolder;
 import io.entgra.device.mgt.core.device.mgt.core.metadata.mgt.DeviceStatusManagementServiceImpl;
 import io.entgra.device.mgt.core.device.mgt.core.metadata.mgt.DeviceTaskConfigurationServiceImpl;
+import io.entgra.device.mgt.core.device.mgt.core.service.DeviceManagementProviderService;
+import io.entgra.device.mgt.core.device.mgt.core.task.DeviceTaskManagerService;
 import io.entgra.device.mgt.core.tenant.mgt.common.spi.TenantManagerService;
 import io.entgra.device.mgt.core.tenant.mgt.core.TenantManager;
 import io.entgra.device.mgt.core.tenant.mgt.core.impl.TenantManagerImpl;
@@ -49,6 +52,18 @@ import org.wso2.carbon.user.core.service.RealmService;
  * policy="dynamic"
  * bind="setRealmService"
  * unbind="unsetRealmService"
+ * @scr.reference name="org.wso2.carbon.device.manager"
+ * interface="io.entgra.device.mgt.core.device.mgt.core.service.DeviceManagementProviderService"
+ * cardinality="1..1"
+ * policy="dynamic"
+ * bind="setDeviceManagementProviderService"
+ * unbind="unsetDeviceManagementProviderService"
+ * @scr.reference name="org.wso2.carbon.device.task.manager"
+ * interface="io.entgra.device.mgt.core.device.mgt.core.task.DeviceTaskManagerService"
+ * cardinality="1..1"
+ * policy="dynamic"
+ * bind="setDeviceTaskManagerService"
+ * unbind="unsetDeviceTaskManagerService"
  */
 
 @SuppressWarnings("unused")
@@ -121,4 +136,28 @@ public class TenantMgtServiceComponent {
         }
         TenantMgtDataHolder.getInstance().setRealmService(null);
     }
+
+    protected void setDeviceTaskManagerService(DeviceTaskManagerService deviceTaskManagerService) {
+        if (log.isDebugEnabled()) {
+        }
+        TenantMgtDataHolder.getInstance().setDeviceTaskManagerService(deviceTaskManagerService);
+    }
+
+    protected void unsetDeviceTaskManagerService(DeviceTaskManagerService deviceTaskManagerService) {
+        if (log.isDebugEnabled()) {
+        }
+        TenantMgtDataHolder.getInstance().setDeviceTaskManagerService(null);
+    }
+
+    protected void setDeviceManagementProviderService(DeviceManagementProviderService deviceManagementProviderService) {
+        if (log.isDebugEnabled()) {
+        }
+        TenantMgtDataHolder.getInstance().setDeviceManagementProvider(deviceManagementProviderService);
+    }
+
+    protected void unsetDeviceManagementProviderService(DeviceManagementProviderService deviceManagementProviderService) {
+        if (log.isDebugEnabled()) {
+        }
+        TenantMgtDataHolder.getInstance().setDeviceTaskManagerService(null);
+    }
 }

components/tenant-mgt/io.entgra.device.mgt.core.tenant.mgt.core/src/main/java/io/entgra/device/mgt/core/tenant/mgt/core/listener/DeviceMgtTenantListener.java

@@ -40,6 +40,7 @@ public class DeviceMgtTenantListener implements TenantMgtListener {
             tenantManager.addDefaultAppCategories(tenantInfoBean);
             tenantManager.addDefaultDeviceStatusFilters(tenantInfoBean);
             tenantManager.addDefaultDeviceTaskConfiguration(tenantInfoBean);
+            tenantManager.addDeviceDetailsRetrieverTask(tenantInfoBean);
         } catch (TenantMgtException e) {
             String msg = "Error occurred while executing tenant creation flow";
             log.error(msg, e);