Merge pull request 'Add new get device activities API' (#246) from Sasini_Sandamali/device-mgt-core-forked:master into master

Reviewed-on: #246

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/beans/DeviceActivityList.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2018 - 2023, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. 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 io.entgra.device.mgt.core.device.mgt.api.jaxrs.beans;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.google.gson.Gson;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.DeviceActivity;
+
+import java.util.List;
+
+@ApiModel(value = "ListOfDeviceActivities", description = "This contains a set of device activities that " +
+        "matches a given"
+        + " criteria as a collection")
+public class DeviceActivityList extends BasePaginatedResult {
+
+    private List<DeviceActivity> activities;
+
+    @ApiModelProperty(value = "List of device activity Ids")
+    @JsonProperty("activities")
+    public List<DeviceActivity> getList() {
+        return activities;
+    }
+
+    public void setList(List<DeviceActivity> activities) {
+        this.activities = activities;
+    }
+
+    @Override
+    public String toString() {
+        return new Gson().toJson(this);
+    }
+
+}

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/service/api/ActivityInfoProviderService.java

@@ -385,6 +385,131 @@ public interface ActivityInfoProviderService {
                     defaultValue = "5")
             @QueryParam("limit") int limit);
 
+    @GET
+    @Path("/devices")
+    @ApiOperation(
+            produces = MediaType.APPLICATION_JSON,
+            httpMethod = "GET",
+            value = "Getting Device Activity Details",
+            notes = "Get the details of the operations/activities executed by the server on the devices registered" +
+                    " with WSO2 EMM, during a defined time period.",
+            tags = "Device Activity Info Provider",
+            extensions = {
+                    @Extension(properties = {
+                            @ExtensionProperty(name = Constants.SCOPE, value = "perm:get-activity")
+                    })
+            },
+            nickname = "getDeviceActivitiesWithFilters"
+    )
+    @ApiResponses(value = {
+            @ApiResponse(
+                    code = 200,
+                    message = "OK. \n Successfully fetched the device activity details.",
+                    response = ActivityList.class,
+                    responseHeaders = {
+                            @ResponseHeader(
+                                    name = "Content-Type",
+                                    description = "The content type of the body"),
+                            @ResponseHeader(
+                                    name = "ETag",
+                                    description = "Entity Tag of the response resource.\n" +
+                                            "Used by caches, or in conditional requests."),
+                            @ResponseHeader(
+                                    name = "Last-Modified",
+                                    description = "Date and time the resource was last modified.\n" +
+                                            "Used by caches, or in conditional requests."),
+                    }),
+            @ApiResponse(
+                    code = 304,
+                    message = "Not Modified. \n Empty body because the client already has the latest version of the" +
+                            " requested resource.\n"),
+            @ApiResponse(
+                    code = 401,
+                    message = "Unauthorized. \n Unauthorized request."),
+            @ApiResponse(
+                    code = 404,
+                    message = "Not Found. \n No activities found.",
+                    response = ErrorResponse.class),
+            @ApiResponse(
+                    code = 406,
+                    message = "Not Acceptable.\n The requested media type is not supported"),
+            @ApiResponse(
+                    code = 500,
+                    message = "Internal Server Error. \n Server error occurred while fetching the activity data.",
+                    response = ErrorResponse.class)
+    })
+    Response getDeviceActivities(
+            @ApiParam(
+                    name = "offset",
+                    value = "The starting pagination index for the complete list of qualified items.",
+                    defaultValue = "0")
+            @DefaultValue("0") @QueryParam("offset") int offset,
+            @ApiParam(
+                    name = "limit",
+                    value = "Provide how many activity details you require from the starting pagination index/offset.",
+                    defaultValue = "5")
+            @DefaultValue("20") @QueryParam("limit") int limit,
+            @ApiParam(
+                    name = "since",
+                    value = "Checks if the requested variant was created since the specified date-time.\n" +
+                            "Provide the value in the following format: EEE, d MMM yyyy HH:mm:ss Z.\n" +
+                            "Example: Mon, 05 Jan 2014 15:10:00 +0200"
+            )
+            @QueryParam("since") String since,
+            @ApiParam(
+                    name = "initiatedBy",
+                    value = "The user, who initiated the operation. If is done by the task, the SYSTEM will be returned." +
+                            " And if a user adds the operation, username is returned"
+            )
+            @QueryParam("initiatedBy") String initiatedBy,
+            @ApiParam(
+                    name = "operationCode",
+                    value = "Operation Code to filter"
+            )
+            @QueryParam("operationCode") String operationCode,
+            @ApiParam(
+                    name = "operationId",
+                    value = "Operation Id to filter"
+            )
+            @QueryParam("operationId") int operationId,
+            @ApiParam(
+                    name = "deviceType",
+                    value = "Device Type to filter"
+            )
+            @QueryParam("deviceType") String deviceType,
+            @ApiParam(
+                    name = "deviceId",
+                    value = "Device Id to filter"
+            )
+            @QueryParam("deviceId") List<String> deviceIds,
+            @ApiParam(
+                    name = "type",
+                    value = "Operation type to filter"
+            )
+            @QueryParam("type") String type,
+            @ApiParam(
+                    name = "status",
+                    value = "Operation response status to filter"
+            )
+            @QueryParam("status") String status,
+            @ApiParam(
+                    name = "If-Modified-Since",
+                    value = "Checks if the requested variant was modified, since the specified date-time\n." +
+                            "Provide the value in the following format: EEE, d MMM yyyy HH:mm:ss Z\n." +
+                            "Example: Mon, 05 Jan 2014 15:10:00 +0200"
+            )
+            @HeaderParam("If-Modified-Since") String ifModifiedSince,
+            @ApiParam(
+                    name = "startTimestamp",
+                    value = "Starting unix timestamp value for filtering activities"
+            )
+            @QueryParam("startTimestamp") long startTimestamp,
+            @ApiParam(
+                    name = "endTimestamp",
+                    value = "Ending unix timestamp value for filtering activities"
+            )
+            @QueryParam("endTimestamp") long endTimestamp);
+
     @GET
     @ApiOperation(
             produces = MediaType.APPLICATION_JSON,

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/service/impl/ActivityProviderServiceImpl.java

@@ -29,6 +29,7 @@ import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Operation;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.OperationManagementException;
 import io.entgra.device.mgt.core.device.mgt.core.service.DeviceManagementProviderService;
 import io.entgra.device.mgt.core.device.mgt.api.jaxrs.beans.ActivityList;
+import io.entgra.device.mgt.core.device.mgt.api.jaxrs.beans.DeviceActivityList;
 import io.entgra.device.mgt.core.device.mgt.api.jaxrs.beans.ErrorResponse;
 import io.entgra.device.mgt.core.device.mgt.api.jaxrs.common.ActivityIdList;
 import io.entgra.device.mgt.core.device.mgt.api.jaxrs.service.api.ActivityInfoProviderService;
@@ -246,6 +247,130 @@ public class ActivityProviderServiceImpl implements ActivityInfoProviderService
         }
     }
 
+    @GET
+    @Path("/devices")
+    @Override
+    public Response getDeviceActivities(@DefaultValue("0") @QueryParam("offset") int offset,
+                                        @DefaultValue("20") @QueryParam("limit") int limit,
+                                        @QueryParam("since") String since,
+                                        @QueryParam("initiatedBy") String initiatedBy,
+                                        @QueryParam("operationCode") String operationCode,
+                                        @QueryParam("operationId") int operationId,
+                                        @QueryParam("deviceType") String deviceType,
+                                        @QueryParam("deviceId") List<String> deviceIds,
+                                        @QueryParam("type") String type,
+                                        @QueryParam("status") String status,
+                                        @HeaderParam("If-Modified-Since") String ifModifiedSince,
+                                        @QueryParam("startTimestamp") long startTimestamp,
+                                        @QueryParam("endTimestamp") long endTimestamp) {
+
+        long ifModifiedSinceTimestamp;
+        long sinceTimestamp;
+        long timestamp = 0;
+        boolean isTimeDurationProvided = false;
+        if (log.isDebugEnabled()) {
+            log.debug("getDeviceActivities since: " + since + " , offset: " + offset + " ,limit: " + limit + " ," +
+                    "ifModifiedSince: " + ifModifiedSince);
+        }
+        RequestValidationUtil.validatePaginationParameters(offset, limit);
+        if (ifModifiedSince != null && !ifModifiedSince.isEmpty()) {
+            Date ifSinceDate;
+            SimpleDateFormat format = new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss Z");
+            try {
+                ifSinceDate = format.parse(ifModifiedSince);
+            } catch (ParseException e) {
+                return Response.status(400).entity(
+                        new ErrorResponse.ErrorResponseBuilder().setMessage(
+                                "Invalid date string is provided in 'If-Modified-Since' header").build()).build();
+            }
+            ifModifiedSinceTimestamp = ifSinceDate.getTime();
+            timestamp = ifModifiedSinceTimestamp / 1000;
+        } else if (since != null && !since.isEmpty()) {
+            Date sinceDate;
+            SimpleDateFormat format = new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss Z");
+            try {
+                sinceDate = format.parse(since);
+            } catch (ParseException e) {
+                return Response.status(400).entity(
+                        new ErrorResponse.ErrorResponseBuilder().setMessage(
+                                "Invalid date string is provided in 'since' filter").build()).build();
+            }
+            sinceTimestamp = sinceDate.getTime();
+            timestamp = sinceTimestamp / 1000;
+        } else if (startTimestamp > 0 && endTimestamp > 0) {
+            RequestValidationUtil.validateTimeDuration(startTimestamp, endTimestamp);
+            isTimeDurationProvided = true;
+        }
+
+        if (timestamp == 0 && !isTimeDurationProvided) {
+            //If timestamp is not sent by the user, a default value is set, that is equal to current time-12 hours.
+            long time = System.currentTimeMillis() / 1000;
+            timestamp = time - 42300;
+        }
+        if (log.isDebugEnabled()) {
+            log.debug("getDeviceActivities final timestamp " + timestamp);
+        }
+        DeviceActivityList deviceActivityList = new DeviceActivityList();
+        DeviceManagementProviderService dmService;
+        ActivityPaginationRequest activityPaginationRequest = new ActivityPaginationRequest(offset, limit);
+        try {
+            if (log.isDebugEnabled()) {
+                log.debug("Calling database to get device activities.");
+            }
+            dmService = DeviceMgtAPIUtils.getDeviceManagementService();
+            if (initiatedBy != null && !initiatedBy.isEmpty()) {
+                activityPaginationRequest.setInitiatedBy(initiatedBy);
+            }
+            if (operationCode != null && !operationCode.isEmpty()) {
+                activityPaginationRequest.setOperationCode(operationCode);
+            }
+            if (operationId > 0) {
+                activityPaginationRequest.setOperationId(operationId);
+            }
+            if (deviceType != null && !deviceType.isEmpty()) {
+                activityPaginationRequest.setDeviceType(deviceType);
+            }
+            if (deviceIds != null && !deviceIds.isEmpty()) {
+                activityPaginationRequest.setDeviceIds(deviceIds);
+            }
+            if (type != null && !type.isEmpty()) {
+                activityPaginationRequest.setType(Operation.Type.valueOf(type.toUpperCase()));
+            }
+            if (status != null && !status.isEmpty()) {
+                activityPaginationRequest.setStatus(Operation.Status.valueOf(status.toUpperCase()));
+            }
+            if (timestamp > 0) {
+                activityPaginationRequest.setSince(timestamp);
+            } else {
+                activityPaginationRequest.setStartTimestamp(startTimestamp);
+                activityPaginationRequest.setEndTimestamp(endTimestamp);
+            }
+            if (log.isDebugEnabled()) {
+                log.debug("Device Activity request: " + new Gson().toJson(activityPaginationRequest));
+            }
+            int count = dmService.getDeviceActivitiesCount(activityPaginationRequest);
+            if (log.isDebugEnabled()) {
+                log.debug("Filtered Device Activity count: " + count);
+            }
+            if (count > 0) {
+                deviceActivityList.setList(dmService.getDeviceActivities(activityPaginationRequest));
+                if (log.isDebugEnabled()) {
+                    log.debug("Fetched Device Activity count: " + deviceActivityList.getList().size());
+                }
+            } else if (ifModifiedSince != null && !ifModifiedSince.isEmpty()) {
+                return Response.notModified().build();
+            }
+            deviceActivityList.setCount(count);
+            return Response.ok().entity(deviceActivityList).build();
+        } catch (OperationManagementException e) {
+            String msg
+                    = "ErrorResponse occurred while fetching the device activities updated after given time stamp.";
+            log.error(msg, e);
+            return Response.serverError().entity(
+                    new ErrorResponse.ErrorResponseBuilder().setMessage(msg).build()).build();
+        }
+    }
+
     @GET
     @Override
     public Response getActivities(@DefaultValue("0") @QueryParam("offset") int offset,
@@ -306,8 +431,6 @@ public class ActivityProviderServiceImpl implements ActivityInfoProviderService
         if (log.isDebugEnabled()) {
             log.debug("getActivities final timestamp " + timestamp);
         }
-        Response response = validateAdminPermission();
-        if (response == null) {
         ActivityList activityList = new ActivityList();
         DeviceManagementProviderService dmService;
         ActivityPaginationRequest activityPaginationRequest = new ActivityPaginationRequest(offset, limit);
@@ -367,9 +490,6 @@ public class ActivityProviderServiceImpl implements ActivityInfoProviderService
             return Response.serverError().entity(
                     new ErrorResponse.ErrorResponseBuilder().setMessage(msg).build()).build();
         }
-        } else {
-            return response;
-        }
     }
 
     private Response validateAdminPermission() {

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/test/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/service/impl/ActivityProviderServiceImplTest.java

@@ -34,6 +34,9 @@ import org.wso2.carbon.context.PrivilegedCarbonContext;
 import io.entgra.device.mgt.core.device.mgt.common.DeviceIdentifier;
 import io.entgra.device.mgt.core.device.mgt.common.authorization.DeviceAccessAuthorizationService;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Activity;
+import io.entgra.device.mgt.core.device.mgt.common.ActivityPaginationRequest;
+import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.DeviceActivity;
+import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Operation;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.OperationManagementException;
 import io.entgra.device.mgt.core.device.mgt.core.authorization.DeviceAccessAuthorizationServiceImpl;
 import io.entgra.device.mgt.core.device.mgt.core.service.DeviceManagementProviderService;
@@ -47,6 +50,7 @@ import io.entgra.device.mgt.core.policy.mgt.core.util.PolicyManagerUtil;
 
 import javax.ws.rs.core.Response;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 import static org.mockito.MockitoAnnotations.initMocks;
@@ -63,6 +67,12 @@ public class ActivityProviderServiceImplTest {
     private static final Log log = LogFactory.getLog(ActivityProviderServiceImplTest.class);
     private static final String TEST_ACTIVITY_ID = "ACTIVITY_1";
     private static final String IF_MODIFIED_SINCE = "01Aug2018";
+    private static final String SINCE = "Fri, 06 Oct 2023 15:30:00 GMT";
+    private static final String DEVICE_TYPE_2 = "power-meter";
+    private static final Operation.Status STATUS = Operation.Status.NOTNOW;
+    private static final Operation.Type TYPE = Operation.Type.PROFILE;
+    private static final String INITIATED_BY = "admin";
+    private static final int OPERATION_ID = 158572;
     private static final String DEVICE_TYPE = "android";
     private static final String DEVICE_ID = "1234567";
     private static final String OPERATION_CODE = "111222";
@@ -71,7 +81,10 @@ public class ActivityProviderServiceImplTest {
     private static final String TEST_ACTIVITY_ID_LIST = "ACTIVITY_1,ACTIVITY_2";
     private static final List<String> idList = new ArrayList();
     private static final List<Activity> activities = new ArrayList<>();
+    private static final List<DeviceActivity> deviceActivities = new ArrayList<>();
     private static final ActivityIdList activityList = new ActivityIdList(TEST_ACTIVITY_ID_LIST);
+
+    private static final ActivityPaginationRequest activityPaginationRequest = new ActivityPaginationRequest(LIMIT,OFFSET);
     private static final ActivityIdList activityListEmpty = new ActivityIdList("");
 
     private List<String> idList1;
@@ -108,6 +121,23 @@ public class ActivityProviderServiceImplTest {
         activity2.setActivityId("ACTIVITY_2");
         activities.add(activity1);
         activities.add(activity2);
+        DeviceActivity deviceActivity1 = new DeviceActivity();
+        DeviceActivity deviceActivity2 = new DeviceActivity();
+        deviceActivity1.setActivityId("ACTIVITY_3");
+        deviceActivity2.setActivityId("ACTIVITY_4");
+        deviceActivities.add(deviceActivity1);
+        deviceActivities.add(deviceActivity2);
+        activityPaginationRequest.setDeviceIds(Collections.singletonList(DEVICE_ID));
+        activityPaginationRequest.setOperationCode(OPERATION_CODE);
+        activityPaginationRequest.setDeviceType(DEVICE_TYPE_2);
+        activityPaginationRequest.setOperationId(OPERATION_ID);
+        activityPaginationRequest.setInitiatedBy(INITIATED_BY);
+        activityPaginationRequest.setStatus(STATUS);
+        activityPaginationRequest.setType(TYPE);
+        activityPaginationRequest.setStartTimestamp(0);
+        activityPaginationRequest.setEndTimestamp(0);
+        activityPaginationRequest.setLimit(LIMIT);
+        activityPaginationRequest.setOffset(OFFSET);
     }
 
     @Test(description =
@@ -186,6 +216,70 @@ public class ActivityProviderServiceImplTest {
         Mockito.reset(this.deviceManagementProviderService);
     }
 
+    @Test(description = "This method tests trying to get details activity IDs when call with data")
+    public void testGetActivitiesWithActivityPaginationRequest() throws OperationManagementException {
+        PowerMockito.stub(PowerMockito.method(DeviceMgtAPIUtils.class, "isAdmin")).toReturn(true);
+        PowerMockito.stub(PowerMockito.method(DeviceMgtAPIUtils.class, "getDeviceManagementService"))
+                .toReturn(this.deviceManagementProviderService);
+
+        Mockito.when(this.deviceManagementProviderService.getActivitiesCount(Mockito.any())).thenReturn(2);
+        Mockito.when(this.deviceManagementProviderService.getActivities(Mockito.any())).thenReturn(activities);
+        Response response = this.activityInfoProviderService.getActivities(
+                OFFSET, LIMIT, SINCE, INITIATED_BY, OPERATION_CODE, OPERATION_ID,
+                DEVICE_TYPE_2, Collections.singletonList(DEVICE_ID), TYPE.toString(), STATUS.toString(), null, 0, 0);
+
+        Assert.assertEquals(response.getStatus(), Response.Status.OK.getStatusCode());
+        Assert.assertNotNull(response);
+        Mockito.reset(this.deviceManagementProviderService);
+    }
+
+    @Test(description = "This method tests trying to get details device activity IDs when call with empty data")
+    public void testGetActivitiesWithEmptyActivityPaginationRequest() throws OperationManagementException {
+        PowerMockito.stub(PowerMockito.method(DeviceMgtAPIUtils.class, "isAdmin")).toReturn(true);
+        PowerMockito.stub(PowerMockito.method(DeviceMgtAPIUtils.class, "getDeviceManagementService"))
+                .toReturn(this.deviceManagementProviderService);
+
+        Response response = this.activityInfoProviderService.getActivities(
+                OFFSET, 0, null, null, null, 0,
+                null, null, null, null, null, 0, 0);
+
+        Assert.assertEquals(response.getStatus(), Response.Status.OK.getStatusCode());
+        Assert.assertEquals(response.getEntity().toString(), "{\"count\":0}");
+        Mockito.reset(this.deviceManagementProviderService);
+    }
+
+    @Test(description = "This method tests trying to get details device activity IDs when call with data")
+    public void testGetDeviceActivitiesWithActivityPaginationRequest() throws OperationManagementException {
+        PowerMockito.stub(PowerMockito.method(DeviceMgtAPIUtils.class, "isAdmin")).toReturn(true);
+        PowerMockito.stub(PowerMockito.method(DeviceMgtAPIUtils.class, "getDeviceManagementService"))
+                .toReturn(this.deviceManagementProviderService);
+
+        Mockito.when(this.deviceManagementProviderService.getDeviceActivitiesCount(Mockito.any())).thenReturn(2);
+        Mockito.when(this.deviceManagementProviderService.getDeviceActivities(Mockito.any())).thenReturn(deviceActivities);
+        Response response = this.activityInfoProviderService.getDeviceActivities(
+                OFFSET, LIMIT, SINCE, INITIATED_BY, OPERATION_CODE, OPERATION_ID,
+                DEVICE_TYPE_2, Collections.singletonList(DEVICE_ID), TYPE.toString(), STATUS.toString(), null, 0, 0);
+
+        Assert.assertEquals(response.getStatus(), Response.Status.OK.getStatusCode());
+        Assert.assertNotNull(response);
+        Mockito.reset(this.deviceManagementProviderService);
+    }
+
+    @Test(description = "This method tests trying to get details activity IDs when call with empty data")
+    public void testGetDeviceActivitiesWithEmptyActivityPaginationRequest() {
+        PowerMockito.stub(PowerMockito.method(DeviceMgtAPIUtils.class, "isAdmin")).toReturn(true);
+        PowerMockito.stub(PowerMockito.method(DeviceMgtAPIUtils.class, "getDeviceManagementService"))
+                .toReturn(this.deviceManagementProviderService);
+
+        Response response = this.activityInfoProviderService.getDeviceActivities(
+                OFFSET, 0, null, null, null, 0,
+                null, null, null, null, null, 0, 0);
+
+        Assert.assertEquals(response.getStatus(), Response.Status.OK.getStatusCode());
+        Assert.assertEquals(response.getEntity().toString(), "{\"count\":0}");
+        Mockito.reset(this.deviceManagementProviderService);
+    }
+
     @Test(description = "This method tests trying to get details of a list activity IDs which does not exists")
     public void testGetActivitiesWithNonExistingActivityIdList() throws OperationManagementException {
         PowerMockito.stub(PowerMockito.method(DeviceMgtAPIUtils.class, "isAdmin")).toReturn(true);

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

@@ -0,0 +1,205 @@
+/*
+ * Copyright (c) 2018 - 2023, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. 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 io.entgra.device.mgt.core.device.mgt.common.operation.mgt;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import io.entgra.device.mgt.core.device.mgt.common.DeviceIdentifier;
+
+import java.util.List;
+
+@ApiModel(value = "DeviceActivity", description = "An activity instance carries a unique identifier that can be " +
+        "used to identify a particular operation instance uniquely")
+public class DeviceActivity {
+
+    public enum Type {
+        CONFIG, MESSAGE, INFO, COMMAND, PROFILE, POLICY
+    }
+
+    public enum Status {
+        IN_PROGRESS, PENDING, COMPLETED, ERROR, REPEATED, INVALID, UNAUTHORIZED, NOTNOW, REQUIRED_CONFIRMATION, CONFIRMED
+    }
+
+    @ApiModelProperty(
+            name = "activityId",
+            value = "Device Activity identifier",
+            required = true,
+            example = "ACTIVITY_1")
+    @JsonProperty("activityId")
+    private String activityId;
+    @ApiModelProperty(
+            name = "code",
+            value = "Device Activity code",
+            required = true,
+            example = "DEVICE_RING")
+    @JsonProperty("code")
+    private String code;
+    @ApiModelProperty(
+            name = "operationId",
+            value = "Operation Id",
+            required = false,
+            example = "10")
+    @JsonProperty("operationId")
+    private int operationId;
+    @ApiModelProperty(
+            name = "type",
+            value = "Activity type",
+            required = true,
+            allowableValues = "CONFIG, MESSAGE, INFO, COMMAND, PROFILE, POLICY",
+            example = "COMMAND")
+    @JsonProperty("type")
+    private Type type;
+
+    @ApiModelProperty(
+            name = "status",
+            value = "Status of the device activity performed.",
+            required = true,
+            example = "PENDING")
+    @JsonProperty("status")
+    private Status status;
+    @ApiModelProperty(
+            name = "createdTimeStamp",
+            value = "Timestamp recorded when the activity took place",
+            required = true,
+            example = "Thu Oct 06 11:18:47 IST 2016")
+    @JsonProperty("createdTimestamp")
+    private String createdTimeStamp;
+    @ApiModelProperty(
+            name = "deviceActivities",
+            value = "Collection of devices activities corresponding to the activity",
+            required = true)
+    @JsonProperty("deviceActivities")
+    private List<DeviceActivity> deviceActivities;
+    @ApiModelProperty(
+            name = "initiatedBy",
+            value = "Initiated user",
+            required = true)
+    @JsonProperty("initiatedBy")
+    private String initiatedBy;
+    @ApiModelProperty(
+            name = "deviceIdentifier",
+            value = "Device identifier of the device.",
+            required = true)
+    @JsonProperty("deviceIdentifier")
+    private DeviceIdentifier deviceIdentifier;
+    @ApiModelProperty(
+            name = "responses",
+            value = "Responses received from devices.",
+            required = true)
+    @JsonProperty("responses")
+    private List<OperationResponse> responses;
+    @ApiModelProperty(
+            name = "updatedTimestamp    ",
+            value = "Last updated time of the activity.",
+            required = true,
+            example = "Thu Oct 06 11:18:47 IST 2016")
+    @JsonProperty("updatedTimestamp")
+    private String updatedTimestamp;
+
+    public DeviceIdentifier getDeviceIdentifier() {
+        return deviceIdentifier;
+    }
+
+    public void setDeviceIdentifier(DeviceIdentifier deviceIdentifier) {
+        this.deviceIdentifier = deviceIdentifier;
+    }
+
+    public List<OperationResponse> getResponses() {
+        return responses;
+    }
+
+    public void setResponses(List<OperationResponse> responses) {
+        this.responses = responses;
+    }
+
+    public String getUpdatedTimestamp() {
+        return updatedTimestamp;
+    }
+
+    public void setUpdatedTimestamp(String updatedTimestamp) {
+        this.updatedTimestamp = updatedTimestamp;
+    }
+
+    public String getActivityId() {
+        return activityId;
+    }
+
+    public void setActivityId(String activityId) {
+        this.activityId = activityId;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+
+    public Status getStatus() {
+        return status;
+    }
+
+    public void setStatus(Status status) {
+        this.status = status;
+    }
+
+    public int getOperationId() {
+        return operationId;
+    }
+
+    public void setOperationId(int operationId) {
+        this.operationId = operationId;
+    }
+
+    public Type getType() {
+        return type;
+    }
+
+    public void setType(Type type) {
+        this.type = type;
+    }
+
+    public String getCreatedTimeStamp() {
+        return createdTimeStamp;
+    }
+
+    public void setCreatedTimeStamp(String createdTimeStamp) {
+        this.createdTimeStamp = createdTimeStamp;
+    }
+
+    public List<DeviceActivity> getDeviceActivities() {
+        return deviceActivities;
+    }
+
+    public void setDeviceActivities(List<DeviceActivity> deviceActivities) {
+        this.deviceActivities = deviceActivities;
+    }
+
+    public String getInitiatedBy() {
+        return initiatedBy;
+    }
+
+    public void setInitiatedBy(String initiatedBy) {
+        this.initiatedBy = initiatedBy;
+    }
+}
+

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

@@ -128,6 +128,11 @@ public interface OperationManager {
     int getActivitiesCount(ActivityPaginationRequest activityPaginationRequest)
             throws OperationManagementException;
 
+    List<DeviceActivity> getDeviceActivities(ActivityPaginationRequest activityPaginationRequest) throws OperationManagementException;
+
+    int getDeviceActivitiesCount(ActivityPaginationRequest activityPaginationRequest)
+            throws OperationManagementException;
+
     List<Activity> getFilteredActivities(String operationCode, int limit, int offset) throws OperationManagementException;
 
     int getTotalCountOfFilteredActivities(String operationCode) throws OperationManagementException;

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

@@ -41,6 +41,7 @@ import io.entgra.device.mgt.core.device.mgt.common.exceptions.InvalidDeviceExcep
 import io.entgra.device.mgt.core.device.mgt.common.exceptions.TransactionManagementException;
 import io.entgra.device.mgt.core.device.mgt.common.group.mgt.DeviceGroupConstants;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Activity;
+import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.DeviceActivity;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.ActivityStatus;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Operation;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.OperationManagementException;
@@ -1303,6 +1304,36 @@ public class OperationManagerImpl implements OperationManager {
         }
     }
 
+    @Override
+    public List<DeviceActivity> getDeviceActivities(ActivityPaginationRequest activityPaginationRequest)
+            throws OperationManagementException {
+        try {
+            OperationManagementDAOFactory.openConnection();
+            return operationDAO.getDeviceActivities(activityPaginationRequest);
+        } catch (SQLException e) {
+            throw new OperationManagementException("Error occurred while opening a connection to the data source.", e);
+        } catch (OperationManagementDAOException e) {
+            throw new OperationManagementException("Error occurred while getting the device activity list.", e);
+        } finally {
+            OperationManagementDAOFactory.closeConnection();
+        }
+    }
+
+    @Override
+    public int getDeviceActivitiesCount(ActivityPaginationRequest activityPaginationRequest)
+            throws OperationManagementException {
+        try {
+            OperationManagementDAOFactory.openConnection();
+            return operationDAO.getDeviceActivitiesCount(activityPaginationRequest);
+        } catch (SQLException e) {
+            throw new OperationManagementException("Error occurred while opening a connection to the data source.", e);
+        } catch (OperationManagementDAOException e) {
+            throw new OperationManagementException("Error occurred while getting the device activity count.", e);
+        } finally {
+            OperationManagementDAOFactory.closeConnection();
+        }
+    }
+
     @Override
     public List<Activity> getFilteredActivities(String operationCode, int limit, int offset) throws OperationManagementException {
         try {

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/operation/mgt/dao/OperationDAO.java

@@ -22,6 +22,7 @@ import io.entgra.device.mgt.core.device.mgt.common.DeviceIdentifier;
 import io.entgra.device.mgt.core.device.mgt.common.PaginationRequest;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Activity;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.OperationResponse;
+import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.DeviceActivity;
 import io.entgra.device.mgt.core.device.mgt.core.dto.operation.mgt.Operation;
 import io.entgra.device.mgt.core.device.mgt.core.dto.operation.mgt.OperationResponseMeta;
 import io.entgra.device.mgt.core.device.mgt.core.operation.mgt.OperationMapping;
@@ -118,4 +119,9 @@ public interface OperationDAO {
     int getActivitiesCount(ActivityPaginationRequest activityPaginationRequest)
             throws OperationManagementDAOException;
 
+    List<DeviceActivity> getDeviceActivities(ActivityPaginationRequest activityPaginationRequest)
+            throws OperationManagementDAOException;
+
+    int getDeviceActivitiesCount(ActivityPaginationRequest activityPaginationRequest)
+            throws OperationManagementDAOException;
 }

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/operation/mgt/dao/impl/GenericOperationDAOImpl.java

@@ -26,6 +26,7 @@ import io.entgra.device.mgt.core.device.mgt.common.ActivityPaginationRequest;
 import io.entgra.device.mgt.core.device.mgt.common.DeviceIdentifier;
 import io.entgra.device.mgt.core.device.mgt.common.PaginationRequest;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Activity;
+import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.DeviceActivity;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.ActivityHolder;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.ActivityStatus;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.OperationResponse;
@@ -399,6 +400,51 @@ public class GenericOperationDAOImpl implements OperationDAO {
         }
     }
 
+    public OperationResponse populateResponse(ResultSet rs) throws SQLException {
+        OperationResponse response = new OperationResponse();
+
+        DeviceActivity deviceActivity = new DeviceActivity();
+        int responseId = 0;
+        List<OperationResponse> operationResponses = new ArrayList<>();
+        List<Integer> largeResponseIDs = new ArrayList<>();
+
+        if (rs.getTimestamp("RECEIVED_TIMESTAMP") != null) {
+            Timestamp receivedTimestamp = rs.getTimestamp("RECEIVED_TIMESTAMP");
+            response.setReceivedTimeStamp(new Date(receivedTimestamp.getTime()).toString());
+        }
+        response.setResponse(rs.getString("OPERATION_RESPONSE"));
+
+        int deviceOpId = rs.getInt("OPERATION_ID");
+        String deviceActivityId = DeviceManagementConstants.OperationAttributes.ACTIVITY + deviceOpId;
+        String deviceIdentifierId = rs.getString("DEVICE_IDENTIFICATION");
+
+        if (rs.getInt("UPDATED_TIMESTAMP") != 0) {
+            responseId = rs.getInt("OP_RES_ID");
+            if (rs.getBoolean("IS_LARGE_RESPONSE")) {
+                largeResponseIDs.add(responseId);
+            } else {
+                deviceActivity.setResponses(operationResponses);
+            }
+        }
+        if (!largeResponseIDs.isEmpty()) {
+            Map<String, Map<String, List<OperationResponse>>> largeOperationResponses = null;
+            try {
+                largeOperationResponses = getLargeOperationResponsesInBulk(largeResponseIDs);
+                if (!largeOperationResponses.isEmpty()) {
+                    Map<String, List<OperationResponse>> largeResponse = largeOperationResponses.get(deviceActivityId);
+                    if (largeResponse != null) {
+                        response = largeResponse.get(deviceIdentifierId).get(0);
+                    }
+                }
+            } catch (OperationManagementDAOException e) {
+                log.warn("Unable to get operation response for Operation ID: " + deviceOpId +
+                        ", Error: " + e.getErrorMessage());
+            }
+        }
+
+        return response;
+    }
+
     @Override
     public Activity getActivity(int operationId) throws OperationManagementDAOException {
 
@@ -2566,4 +2612,222 @@ public class GenericOperationDAOImpl implements OperationDAO {
         return 0;
     }
 
+    @Override
+    public List<DeviceActivity> getDeviceActivities(ActivityPaginationRequest activityPaginationRequest)
+            throws OperationManagementDAOException {
+        List<DeviceActivity> finalizedActivitiesList = new ArrayList<>();
+        try {
+            boolean isTimeDurationFilteringProvided = false;
+            Connection conn = OperationManagementDAOFactory.getConnection();
+            int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
+            StringBuilder sql = new StringBuilder("SELECT " +
+                    "    eom.*," +
+                    "    opr.ID AS OP_RES_ID," +
+                    "    opr.RECEIVED_TIMESTAMP," +
+                    "    opr.OPERATION_RESPONSE, " +
+                    "    opr.IS_LARGE_RESPONSE " +
+                    "FROM(" +
+                    "   SELECT * " +
+                    "   FROM " +
+                    "       DM_ENROLMENT_OP_MAPPING " +
+                    "   WHERE " +
+                    "       TENANT_ID = ? ");
+
+            if (activityPaginationRequest.getStartTimestamp() > 0 && activityPaginationRequest.getEndTimestamp() > 0) {
+                isTimeDurationFilteringProvided = true;
+                sql.append("AND CREATED_TIMESTAMP BETWEEN ? AND ? ");
+            }
+            if (activityPaginationRequest.getDeviceType() != null) {
+                sql.append("AND DEVICE_TYPE = ? ");
+            }
+            if (activityPaginationRequest.getDeviceIds() != null && !activityPaginationRequest.getDeviceIds().isEmpty()) {
+                sql.append("AND DEVICE_IDENTIFICATION IN (");
+                for (int i = 0; i < activityPaginationRequest.getDeviceIds().size() - 1; i++) {
+                    sql.append("?, ");
+                }
+                sql.append("?) ");
+            }
+            if (activityPaginationRequest.getOperationId() > 0) {
+                sql.append("AND OPERATION_ID = ? ");
+            }
+            if (activityPaginationRequest.getOperationCode() != null) {
+                sql.append("AND OPERATION_CODE = ? ");
+            }
+            if (activityPaginationRequest.getInitiatedBy() != null) {
+                sql.append("AND INITIATED_BY = ? ");
+            }
+            if (activityPaginationRequest.getSince() != 0) {
+                sql.append("AND UPDATED_TIMESTAMP > ? ");
+            }
+            if (activityPaginationRequest.getType() != null) {
+                sql.append("AND TYPE = ? ");
+            }
+            if (activityPaginationRequest.getStatus() != null) {
+                sql.append("AND STATUS = ? ");
+            }
+
+            sql.append("ORDER BY ID ASC limit ? , ? ) eom " +
+                    "LEFT JOIN DM_DEVICE_OPERATION_RESPONSE opr ON eom.ID = opr.EN_OP_MAP_ID");
+
+            int index = 1;
+            try (PreparedStatement stmt = conn.prepareStatement(sql.toString())) {
+                stmt.setInt(index++, tenantId);
+                if (isTimeDurationFilteringProvided) {
+                    stmt.setLong(index++, activityPaginationRequest.getStartTimestamp());
+                    stmt.setLong(index++, activityPaginationRequest.getEndTimestamp());
+                }
+                if (activityPaginationRequest.getDeviceType() != null) {
+                    stmt.setString(index++, activityPaginationRequest.getDeviceType());
+                }
+                if (activityPaginationRequest.getDeviceIds() != null && !activityPaginationRequest.getDeviceIds().isEmpty()) {
+                    for (String deviceId : activityPaginationRequest.getDeviceIds()) {
+                        stmt.setString(index++, deviceId);
+                    }
+                }
+                if (activityPaginationRequest.getOperationId() > 0) {
+                    stmt.setInt(index++, activityPaginationRequest.getOperationId());
+                }
+                if (activityPaginationRequest.getOperationCode() != null) {
+                    stmt.setString(index++, activityPaginationRequest.getOperationCode());
+                }
+
+                if (activityPaginationRequest.getInitiatedBy() != null) {
+                    stmt.setString(index++, activityPaginationRequest.getInitiatedBy());
+                }
+                if (activityPaginationRequest.getSince() != 0) {
+                    stmt.setLong(index++, activityPaginationRequest.getSince());
+                }
+                if (activityPaginationRequest.getType() != null) {
+                    stmt.setString(index++, activityPaginationRequest.getType().name());
+                }
+                if (activityPaginationRequest.getStatus() != null) {
+                    stmt.setString(index++, activityPaginationRequest.getStatus().name());
+                }
+
+                stmt.setInt(index++, activityPaginationRequest.getOffset());
+                stmt.setInt(index, activityPaginationRequest.getLimit());
+
+                try (ResultSet rs = stmt.executeQuery()) {
+                    Map<Integer, DeviceActivity> activities = new HashMap<>();
+
+                    while (rs.next()) {
+                        int activityId = rs.getInt("ID");
+                        DeviceActivity deviceActivity = activities.get(activityId);
+                        if (deviceActivity == null) {
+                            deviceActivity = OperationDAOUtil.populateActivity(rs);
+                            activities.put(activityId, deviceActivity);
+                        }
+                        deviceActivity.getResponses().add(populateResponse(rs));
+                    }
+                    for (int activityId : activities.keySet()) {
+                        DeviceActivity deviceActivity = activities.get(activityId);
+                        finalizedActivitiesList.add(deviceActivity);
+                    }
+                }
+
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while getting the operation details from the database.";
+            log.error(msg, e);
+            throw new OperationManagementDAOException(msg, e);
+        }
+        return finalizedActivitiesList;
+    }
+
+
+    @Override
+    public int getDeviceActivitiesCount(ActivityPaginationRequest activityPaginationRequest)
+            throws OperationManagementDAOException {
+        try {
+            boolean isTimeDurationFilteringProvided = false;
+            Connection conn = OperationManagementDAOFactory.getConnection();
+            int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
+            StringBuilder sql = new StringBuilder();
+
+
+            sql.append("SELECT count(DISTINCT ID) AS ACTIVITY_COUNT " +
+                    "FROM DM_ENROLMENT_OP_MAPPING WHERE TENANT_ID = ? ");
+
+            if (activityPaginationRequest.getDeviceType() != null) {
+                sql.append("AND DEVICE_TYPE = ? ");
+            }
+            if (activityPaginationRequest.getDeviceIds() != null && !activityPaginationRequest.getDeviceIds().isEmpty()) {
+                sql.append("AND DEVICE_IDENTIFICATION IN (");
+                for (int i = 0; i < activityPaginationRequest.getDeviceIds().size() - 1; i++) {
+                    sql.append("?, ");
+                }
+                sql.append("?) ");
+            }
+            if (activityPaginationRequest.getOperationCode() != null) {
+                sql.append("AND OPERATION_CODE = ? ");
+            }
+            if (activityPaginationRequest.getOperationId() > 0) {
+                sql.append("AND OPERATION_ID = ? ");
+            }
+            if (activityPaginationRequest.getInitiatedBy() != null) {
+                sql.append("AND INITIATED_BY = ? ");
+            }
+            if (activityPaginationRequest.getSince() != 0) {
+                sql.append("AND UPDATED_TIMESTAMP > ? ");
+            }
+            if (activityPaginationRequest.getType() != null) {
+                sql.append("AND TYPE = ? ");
+            }
+            if (activityPaginationRequest.getStatus() != null) {
+                sql.append("AND STATUS = ? ");
+            }
+
+            if (activityPaginationRequest.getStartTimestamp() > 0 && activityPaginationRequest.getEndTimestamp() > 0) {
+                isTimeDurationFilteringProvided = true;
+                sql.append("AND CREATED_TIMESTAMP BETWEEN ? AND ? ");
+            }
+
+            int index = 1;
+            try (PreparedStatement stmt = conn.prepareStatement(sql.toString())) {
+                stmt.setInt(index++, tenantId);
+                if (activityPaginationRequest.getDeviceType() != null) {
+                    stmt.setString(index++, activityPaginationRequest.getDeviceType());
+                }
+                if (activityPaginationRequest.getDeviceIds() != null && !activityPaginationRequest.getDeviceIds().isEmpty()) {
+                    for (String deviceId : activityPaginationRequest.getDeviceIds()) {
+                        stmt.setString(index++, deviceId);
+                    }
+                }
+                if (activityPaginationRequest.getOperationCode() != null) {
+                    stmt.setString(index++, activityPaginationRequest.getOperationCode());
+                }
+                if (activityPaginationRequest.getOperationId() > 0) {
+                    stmt.setInt(index++, activityPaginationRequest.getOperationId());
+                }
+                if (activityPaginationRequest.getInitiatedBy() != null) {
+                    stmt.setString(index++, activityPaginationRequest.getInitiatedBy());
+                }
+                if (activityPaginationRequest.getSince() != 0) {
+                    stmt.setLong(index++, activityPaginationRequest.getSince());
+                }
+                if (activityPaginationRequest.getType() != null) {
+                    stmt.setString(index++, activityPaginationRequest.getType().name());
+                }
+                if (activityPaginationRequest.getStatus() != null) {
+                    stmt.setString(index++, activityPaginationRequest.getStatus().name());
+                }
+
+                if (isTimeDurationFilteringProvided) {
+                    stmt.setLong(index++, activityPaginationRequest.getStartTimestamp());
+                    stmt.setLong(index, activityPaginationRequest.getEndTimestamp());
+                }
+
+                try (ResultSet rs = stmt.executeQuery()) {
+                    if (rs.next()) {
+                        return rs.getInt("ACTIVITY_COUNT");
+                    }
+                }
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while getting the operation details from the database.";
+            log.error(msg, e);
+            throw new OperationManagementDAOException(msg, e);
+        }
+        return 0;
+    }
 }

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/operation/mgt/dao/util/OperationDAOUtil.java

@@ -21,6 +21,7 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import io.entgra.device.mgt.core.device.mgt.common.DeviceIdentifier;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Activity;
+import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.DeviceActivity;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.ActivityHolder;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.ActivityMapper;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.ActivityStatus;
@@ -38,6 +39,8 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.sql.Timestamp;
+import java.util.Date;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -136,8 +139,9 @@ public class OperationDAOUtil {
     public static OperationResponse getLargeOperationResponse(ResultSet rs) throws
                                                                        ClassNotFoundException, IOException, SQLException {
         OperationResponse response = new OperationResponse();
-        if (rs.getTimestamp("RECEIVED_TIMESTAMP") != (null)) {
+        if (rs.getTimestamp("RECEIVED_TIMESTAMP") != null) {
-            response.setReceivedTimeStamp(rs.getTimestamp("RECEIVED_TIMESTAMP").toString());
+            Timestamp receivedTimestamp = rs.getTimestamp("RECEIVED_TIMESTAMP");
+            response.setReceivedTimeStamp(new Date(receivedTimestamp.getTime()).toString());
         }
         ByteArrayInputStream bais = null;
         ObjectInputStream ois = null;
@@ -171,8 +175,9 @@ public class OperationDAOUtil {
 
     public static OperationResponse getOperationResponse(ResultSet rs) throws SQLException {
         OperationResponse response = new OperationResponse();
-        if (rs.getTimestamp("RECEIVED_TIMESTAMP") != (null)) {
+        if (rs.getTimestamp("RECEIVED_TIMESTAMP") != null) {
-            response.setReceivedTimeStamp(rs.getTimestamp("RECEIVED_TIMESTAMP").toString());
+            Timestamp receivedTimestamp = rs.getTimestamp("RECEIVED_TIMESTAMP");
+            response.setReceivedTimeStamp(new Date(receivedTimestamp.getTime()).toString());
         }
         if (rs.getString("OPERATION_RESPONSE") != null) {
             response.setResponse(rs.getString("OPERATION_RESPONSE"));
@@ -302,4 +307,27 @@ public class OperationDAOUtil {
             throw new OperationManagementDAOException(msg, e);
         }
     }
+
+    public static DeviceActivity populateActivity(ResultSet rs) throws SQLException {
+        DeviceActivity deviceActivity = new DeviceActivity();
+        List<OperationResponse> operationResponses = new ArrayList<>();
+
+        deviceActivity.setType(DeviceActivity.Type.valueOf(rs.getString("TYPE")));
+        deviceActivity.setCreatedTimeStamp(new Date(rs.getLong(("CREATED_TIMESTAMP")) * 1000).toString());
+        deviceActivity.setActivityId(OperationDAOUtil.getActivityId(rs.getInt("OPERATION_ID")));
+        deviceActivity.setCode(rs.getString("OPERATION_CODE"));
+        deviceActivity.setOperationId(rs.getInt("OPERATION_ID"));
+        deviceActivity.setInitiatedBy(rs.getString("INITIATED_BY"));
+
+        DeviceIdentifier deviceIdentifier = new DeviceIdentifier();
+        deviceIdentifier.setId(rs.getString("DEVICE_IDENTIFICATION"));
+        deviceIdentifier.setType(rs.getString("DEVICE_TYPE"));
+        deviceActivity.setDeviceIdentifier(deviceIdentifier);
+        deviceActivity.setStatus(DeviceActivity.Status.valueOf(rs.getString("STATUS")));
+        if (rs.getInt("UPDATED_TIMESTAMP") != 0) {
+            deviceActivity.setResponses(operationResponses);
+        }
+        deviceActivity.setUpdatedTimestamp(new Date(rs.getLong(("UPDATED_TIMESTAMP")) * 1000).toString());
+        return deviceActivity;
+    }
 }

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

@@ -39,6 +39,7 @@ import io.entgra.device.mgt.core.device.mgt.common.geo.service.GeoQuery;
 import io.entgra.device.mgt.core.device.mgt.common.invitation.mgt.DeviceEnrollmentInvitationDetails;
 import io.entgra.device.mgt.core.device.mgt.common.license.mgt.License;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Activity;
+import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.DeviceActivity;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Operation;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.OperationManagementException;
 import io.entgra.device.mgt.core.device.mgt.common.policy.mgt.PolicyMonitoringManager;
@@ -1004,6 +1005,11 @@ public interface DeviceManagementProviderService {
     int getActivitiesCount(ActivityPaginationRequest activityPaginationRequest)
             throws OperationManagementException;
 
+    List<DeviceActivity> getDeviceActivities(ActivityPaginationRequest activityPaginationRequest) throws OperationManagementException;
+
+    int getDeviceActivitiesCount(ActivityPaginationRequest activityPaginationRequest)
+            throws OperationManagementException;
+
     License getLicenseConfig (String deviceTypeName) throws DeviceManagementException;
 
     /**

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

@@ -93,6 +93,7 @@ import io.entgra.device.mgt.core.device.mgt.common.license.mgt.LicenseManagement
 import io.entgra.device.mgt.core.device.mgt.common.metadata.mgt.Metadata;
 import io.entgra.device.mgt.core.device.mgt.common.metadata.mgt.MetadataManagementService;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Activity;
+import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.DeviceActivity;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.Operation;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.OperationManagementException;
 import io.entgra.device.mgt.core.device.mgt.common.operation.mgt.OperationManager;
@@ -2564,6 +2565,19 @@ public class DeviceManagementProviderServiceImpl implements DeviceManagementProv
                 .getActivitiesCount(activityPaginationRequest);
     }
 
+    @Override
+    public List<DeviceActivity> getDeviceActivities(ActivityPaginationRequest activityPaginationRequest)
+            throws OperationManagementException {
+        return DeviceManagementDataHolder.getInstance().getOperationManager().getDeviceActivities(activityPaginationRequest);
+    }
+
+    @Override
+    public int getDeviceActivitiesCount(ActivityPaginationRequest activityPaginationRequest)
+            throws OperationManagementException {
+        return DeviceManagementDataHolder.getInstance().getOperationManager()
+                .getDeviceActivitiesCount(activityPaginationRequest);
+    }
+
     @Override
     public List<MonitoringOperation> getMonitoringOperationList(String deviceType) {
         int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();