* Copyright (C) 2021 highstreet technologies GmbH
* Modifications Copyright (C) 2021-2022 Nordix Foundation
* Modifications Copyright (C) 2021 Pantheon.tech
- * Modifications Copyright (C) 2021 Bell Canada
+ * Modifications Copyright (C) 2021-2022 Bell Canada
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
package org.onap.cps.ncmp.api.impl;
+import static org.onap.cps.ncmp.api.impl.constants.DmiRegistryConstants.NCMP_DATASPACE_NAME;
+import static org.onap.cps.ncmp.api.impl.constants.DmiRegistryConstants.NCMP_DMI_REGISTRY_ANCHOR;
+import static org.onap.cps.ncmp.api.impl.constants.DmiRegistryConstants.NCMP_DMI_REGISTRY_PARENT;
+import static org.onap.cps.ncmp.api.impl.constants.DmiRegistryConstants.NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME;
+import static org.onap.cps.ncmp.api.impl.constants.DmiRegistryConstants.NO_TIMESTAMP;
import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum;
import static org.onap.cps.spi.CascadeDeleteAllowed.CASCADE_DELETE_ALLOWED;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import java.time.OffsetDateTime;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
+import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
+import java.util.UUID;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.onap.cps.api.CpsAdminService;
import org.onap.cps.api.CpsDataService;
import org.onap.cps.api.CpsModuleService;
import org.onap.cps.ncmp.api.NetworkCmProxyDataService;
+import org.onap.cps.ncmp.api.impl.exception.InvalidTopicException;
import org.onap.cps.ncmp.api.impl.exception.ServerNcmpException;
import org.onap.cps.ncmp.api.impl.operations.DmiDataOperations;
import org.onap.cps.ncmp.api.impl.operations.DmiModelOperations;
import org.onap.cps.ncmp.api.impl.operations.DmiOperations;
-import org.onap.cps.ncmp.api.models.CmHandle;
+import org.onap.cps.ncmp.api.impl.operations.YangModelCmHandleRetriever;
+import org.onap.cps.ncmp.api.impl.yangmodels.YangModelCmHandle;
+import org.onap.cps.ncmp.api.models.CmHandleRegistrationResponse;
+import org.onap.cps.ncmp.api.models.CmHandleRegistrationResponse.RegistrationError;
import org.onap.cps.ncmp.api.models.DmiPluginRegistration;
-import org.onap.cps.ncmp.api.models.PersistenceCmHandle;
-import org.onap.cps.ncmp.api.models.PersistenceCmHandlesList;
+import org.onap.cps.ncmp.api.models.DmiPluginRegistrationResponse;
+import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
+import org.onap.cps.spi.exceptions.AlreadyDefinedException;
import org.onap.cps.spi.exceptions.DataNodeNotFoundException;
-import org.onap.cps.spi.exceptions.DataValidationException;
+import org.onap.cps.spi.exceptions.SchemaSetNotFoundException;
import org.onap.cps.spi.model.ModuleReference;
import org.onap.cps.utils.JsonObjectMapper;
+import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
@RequiredArgsConstructor
public class NetworkCmProxyDataServiceImpl implements NetworkCmProxyDataService {
- private static final String NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME = "NFP-Operational";
-
- private static final String NCMP_DATASPACE_NAME = "NCMP-Admin";
-
- private static final String NCMP_DMI_REGISTRY_ANCHOR = "ncmp-dmi-registry";
-
- private static final OffsetDateTime NO_TIMESTAMP = null;
-
private final CpsDataService cpsDataService;
private final JsonObjectMapper jsonObjectMapper;
private final CpsAdminService cpsAdminService;
+ private final NetworkCmProxyDataServicePropertyHandler networkCmProxyDataServicePropertyHandler;
+
+ private final YangModelCmHandleRetriever yangModelCmHandleRetriever;
+
+ // valid kafka topic name regex
+ private static final Pattern TOPIC_NAME_PATTERN = Pattern.compile("^[a-zA-Z0-9]([._-](?![._-])|"
+ + "[a-zA-Z0-9]){0,120}[a-zA-Z0-9]$");
+ private static final String NO_REQUEST_ID = null;
+ private static final String NO_TOPIC = null;
+
@Override
- public void updateDmiRegistrationAndSyncModule(final DmiPluginRegistration dmiPluginRegistration) {
+ public DmiPluginRegistrationResponse updateDmiRegistrationAndSyncModule(
+ final DmiPluginRegistration dmiPluginRegistration) {
dmiPluginRegistration.validateDmiPluginRegistration();
- try {
- if (dmiPluginRegistration.getCreatedCmHandles() != null) {
- parseAndCreateCmHandlesInDmiRegistrationAndSyncModules(dmiPluginRegistration);
- }
- if (dmiPluginRegistration.getUpdatedCmHandles() != null) {
- parseAndUpdateCmHandlesInDmiRegistration(dmiPluginRegistration);
- }
- if (dmiPluginRegistration.getRemovedCmHandles() != null) {
- parseAndRemoveCmHandlesInDmiRegistration(dmiPluginRegistration);
- }
- } catch (final JsonProcessingException e) {
- handleJsonProcessingException(dmiPluginRegistration, e);
+ final var dmiPluginRegistrationResponse = new DmiPluginRegistrationResponse();
+ dmiPluginRegistrationResponse.setRemovedCmHandles(
+ parseAndRemoveCmHandlesInDmiRegistration(dmiPluginRegistration.getRemovedCmHandles()));
+ if (!dmiPluginRegistration.getCreatedCmHandles().isEmpty()) {
+ dmiPluginRegistrationResponse.setCreatedCmHandles(
+ parseAndCreateCmHandlesInDmiRegistrationAndSyncModules(dmiPluginRegistration));
}
+ if (!dmiPluginRegistration.getUpdatedCmHandles().isEmpty()) {
+ dmiPluginRegistrationResponse.setUpdatedCmHandles(
+ networkCmProxyDataServicePropertyHandler
+ .updateCmHandleProperties(dmiPluginRegistration.getUpdatedCmHandles()));
+ }
+ return dmiPluginRegistrationResponse;
}
@Override
- public Object getResourceDataOperationalForCmHandle(final String cmHandle,
+ public Object getResourceDataOperationalForCmHandle(final String cmHandleId,
final String resourceIdentifier,
final String acceptParamInHeader,
- final String optionsParamInQuery) {
- return handleResponse(dmiDataOperations.getResourceDataFromDmi(
- cmHandle,
- resourceIdentifier,
- optionsParamInQuery,
- acceptParamInHeader,
- DmiOperations.DataStoreEnum.PASSTHROUGH_OPERATIONAL), "Not able to get resource data.");
+ final String optionsParamInQuery,
+ final String topicParamInQuery) {
+
+ return validateTopicNameAndGetResourceData(cmHandleId, resourceIdentifier, acceptParamInHeader,
+ DmiOperations.DataStoreEnum.PASSTHROUGH_OPERATIONAL, optionsParamInQuery, topicParamInQuery);
}
@Override
- public Object getResourceDataPassThroughRunningForCmHandle(final String cmHandle,
+ public Object getResourceDataPassThroughRunningForCmHandle(final String cmHandleId,
final String resourceIdentifier,
final String acceptParamInHeader,
- final String optionsParamInQuery) {
- return handleResponse(dmiDataOperations.getResourceDataFromDmi(
- cmHandle,
- resourceIdentifier,
- optionsParamInQuery,
- acceptParamInHeader,
- DmiOperations.DataStoreEnum.PASSTHROUGH_RUNNING), "Not able to get resource data.");
+ final String optionsParamInQuery,
+ final String topicParamInQuery) {
+ return validateTopicNameAndGetResourceData(cmHandleId, resourceIdentifier, acceptParamInHeader,
+ DmiOperations.DataStoreEnum.PASSTHROUGH_RUNNING, optionsParamInQuery, topicParamInQuery);
}
@Override
- public Object writeResourceDataPassThroughRunningForCmHandle(final String cmHandle,
+ public Object writeResourceDataPassThroughRunningForCmHandle(final String cmHandleId,
final String resourceIdentifier,
final OperationEnum operation,
final String requestData,
final String dataType) {
return handleResponse(
dmiDataOperations.writeResourceDataPassThroughRunningFromDmi(
- cmHandle, resourceIdentifier, operation, requestData, dataType),
+ cmHandleId, resourceIdentifier, operation, requestData, dataType),
"Not able to " + operation + " resource data.");
}
@Override
- public Collection<ModuleReference> getYangResourcesModuleReferences(final String cmHandle) {
- return cpsModuleService.getYangResourcesModuleReferences(NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME, cmHandle);
+ public Collection<ModuleReference> getYangResourcesModuleReferences(final String cmHandleId) {
+ return cpsModuleService.getYangResourcesModuleReferences(NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME, cmHandleId);
}
/**
}
/**
- * THis method registers a cm handle and intiates modules sync.
+ * Retrieve cm handle details for a given cm handle.
+ *
+ * @param cmHandleId cm handle identifier
+ * @return cm handle details
+ */
+ @Override
+ public NcmpServiceCmHandle getNcmpServiceCmHandle(final String cmHandleId) {
+ final NcmpServiceCmHandle ncmpServiceCmHandle = new NcmpServiceCmHandle();
+ final YangModelCmHandle yangModelCmHandle =
+ yangModelCmHandleRetriever.getDmiServiceNamesAndProperties(cmHandleId);
+ final List<YangModelCmHandle.Property> dmiProperties = yangModelCmHandle.getDmiProperties();
+ final List<YangModelCmHandle.Property> publicProperties = yangModelCmHandle.getPublicProperties();
+ ncmpServiceCmHandle.setCmHandleID(yangModelCmHandle.getId());
+ setDmiProperties(dmiProperties, ncmpServiceCmHandle);
+ setPublicProperties(publicProperties, ncmpServiceCmHandle);
+ return ncmpServiceCmHandle;
+ }
+
+ private void setDmiProperties(final List<YangModelCmHandle.Property> dmiProperties,
+ final NcmpServiceCmHandle ncmpServiceCmHandle) {
+ final Map<String, String> dmiPropertiesMap = new LinkedHashMap<>(dmiProperties.size());
+ asPropertiesMap(dmiProperties, dmiPropertiesMap);
+ ncmpServiceCmHandle.setDmiProperties(dmiPropertiesMap);
+ }
+
+ private void setPublicProperties(final List<YangModelCmHandle.Property> publicProperties,
+ final NcmpServiceCmHandle ncmpServiceCmHandle) {
+ final Map<String, String> publicPropertiesMap = new LinkedHashMap<>();
+ asPropertiesMap(publicProperties, publicPropertiesMap);
+ ncmpServiceCmHandle.setPublicProperties(publicPropertiesMap);
+ }
+
+ private void asPropertiesMap(final List<YangModelCmHandle.Property> properties,
+ final Map<String, String> propertiesMap) {
+ for (final YangModelCmHandle.Property property: properties) {
+ propertiesMap.put(property.getName(), property.getValue());
+ }
+ }
+
+ /**
+ * THis method registers a cm handle and initiates modules sync.
*
* @param dmiPluginRegistration dmi plugin registration information.
- * @throws JsonProcessingException thrown if json is malformed or missing.
+ * @return cm-handle registration response for create cm-handle requests.
*/
- public void parseAndCreateCmHandlesInDmiRegistrationAndSyncModules(
- final DmiPluginRegistration dmiPluginRegistration) throws JsonProcessingException {
- final PersistenceCmHandlesList createdPersistenceCmHandlesList =
- getUpdatedPersistenceCmHandlesList(dmiPluginRegistration, dmiPluginRegistration.getCreatedCmHandles());
- registerAndSyncNewCmHandles(createdPersistenceCmHandlesList);
+ public List<CmHandleRegistrationResponse> parseAndCreateCmHandlesInDmiRegistrationAndSyncModules(
+ final DmiPluginRegistration dmiPluginRegistration) {
+ return dmiPluginRegistration.getCreatedCmHandles().stream()
+ .map(cmHandle ->
+ YangModelCmHandle.toYangModelCmHandle(
+ dmiPluginRegistration.getDmiPlugin(),
+ dmiPluginRegistration.getDmiDataPlugin(),
+ dmiPluginRegistration.getDmiModelPlugin(), cmHandle)
+ )
+ .map(this::registerAndSyncNewCmHandle)
+ .collect(Collectors.toList());
}
private static Object handleResponse(final ResponseEntity<?> responseEntity,
}
}
- private void parseAndUpdateCmHandlesInDmiRegistration(final DmiPluginRegistration dmiPluginRegistration)
- throws JsonProcessingException {
- final PersistenceCmHandlesList updatedPersistenceCmHandlesList =
- getUpdatedPersistenceCmHandlesList(dmiPluginRegistration, dmiPluginRegistration.getUpdatedCmHandles());
- final String cmHandlesAsJson = jsonObjectMapper.asJsonString(updatedPersistenceCmHandlesList);
- cpsDataService.updateNodeLeavesAndExistingDescendantLeaves(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR,
- "/dmi-registry", cmHandlesAsJson, NO_TIMESTAMP);
- }
-
- private PersistenceCmHandlesList getUpdatedPersistenceCmHandlesList(
- final DmiPluginRegistration dmiPluginRegistration,
- final List<CmHandle> updatedCmHandles) {
- return PersistenceCmHandlesList.toPersistenceCmHandlesList(
- dmiPluginRegistration.getDmiPlugin(),
- dmiPluginRegistration.getDmiDataPlugin(),
- dmiPluginRegistration.getDmiModelPlugin(),
- updatedCmHandles);
- }
-
- private static void handleJsonProcessingException(final DmiPluginRegistration dmiPluginRegistration,
- final JsonProcessingException e) {
- final String message = "Parsing error occurred while processing DMI Plugin Registration"
- + dmiPluginRegistration;
- log.error(message);
- throw new DataValidationException(message, e.getMessage(), e);
- }
-
- private void registerAndSyncNewCmHandles(final PersistenceCmHandlesList persistenceCmHandlesList)
- throws JsonProcessingException {
- final String cmHandleJsonData = jsonObjectMapper.asJsonString(persistenceCmHandlesList);
- cpsDataService.saveListElements(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR, "/dmi-registry",
- cmHandleJsonData, NO_TIMESTAMP);
-
- for (final PersistenceCmHandle persistenceCmHandle : persistenceCmHandlesList.getPersistenceCmHandles()) {
- syncModulesAndCreateAnchor(persistenceCmHandle);
+ private CmHandleRegistrationResponse registerAndSyncNewCmHandle(final YangModelCmHandle yangModelCmHandle) {
+ try {
+ final String cmHandleJsonData = String.format("{\"cm-handles\":[%s]}",
+ jsonObjectMapper.asJsonString(yangModelCmHandle));
+ cpsDataService.saveListElements(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR, NCMP_DMI_REGISTRY_PARENT,
+ cmHandleJsonData, NO_TIMESTAMP);
+ syncModulesAndCreateAnchor(yangModelCmHandle);
+ return CmHandleRegistrationResponse.createSuccessResponse(yangModelCmHandle.getId());
+ } catch (final AlreadyDefinedException alreadyDefinedException) {
+ return CmHandleRegistrationResponse.createFailureResponse(
+ yangModelCmHandle.getId(), RegistrationError.CM_HANDLE_ALREADY_EXIST);
+ } catch (final Exception exception) {
+ return CmHandleRegistrationResponse.createFailureResponse(yangModelCmHandle.getId(), exception);
}
}
- protected void syncModulesAndCreateAnchor(final PersistenceCmHandle persistenceCmHandle) {
- syncAndCreateSchemaSet(persistenceCmHandle);
- createAnchor(persistenceCmHandle);
+ protected void syncModulesAndCreateAnchor(final YangModelCmHandle yangModelCmHandle) {
+ syncAndCreateSchemaSet(yangModelCmHandle);
+ createAnchor(yangModelCmHandle);
}
- private void parseAndRemoveCmHandlesInDmiRegistration(final DmiPluginRegistration dmiPluginRegistration) {
- for (final String cmHandle : dmiPluginRegistration.getRemovedCmHandles()) {
+ protected List<CmHandleRegistrationResponse> parseAndRemoveCmHandlesInDmiRegistration(
+ final List<String> tobeRemovedCmHandles) {
+ final List<CmHandleRegistrationResponse> cmHandleRegistrationResponses =
+ new ArrayList<>(tobeRemovedCmHandles.size());
+ for (final String cmHandle : tobeRemovedCmHandles) {
try {
- attemptToDeleteSchemaSetWithCascade(cmHandle);
+ deleteSchemaSetWithCascade(cmHandle);
cpsDataService.deleteListOrListElement(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR,
"/dmi-registry/cm-handles[@id='" + cmHandle + "']", NO_TIMESTAMP);
- } catch (final DataNodeNotFoundException e) {
- log.warn("Datanode {} not deleted message {}", cmHandle, e.getMessage());
+ cmHandleRegistrationResponses.add(CmHandleRegistrationResponse.createSuccessResponse(cmHandle));
+ } catch (final DataNodeNotFoundException dataNodeNotFoundException) {
+ log.error("Unable to find dataNode for cmHandleId : {} , caused by : {}",
+ cmHandle, dataNodeNotFoundException.getMessage());
+ cmHandleRegistrationResponses.add(CmHandleRegistrationResponse
+ .createFailureResponse(cmHandle, RegistrationError.CM_HANDLE_DOES_NOT_EXIST));
+ } catch (final Exception exception) {
+ log.error("Unable to de-register cm-handleIdd : {} , caused by : {}",
+ cmHandle, exception.getMessage());
+ cmHandleRegistrationResponses.add(
+ CmHandleRegistrationResponse.createFailureResponse(cmHandle, exception));
}
}
+ return cmHandleRegistrationResponses;
}
- private void attemptToDeleteSchemaSetWithCascade(final String schemaSetName) {
+ private void deleteSchemaSetWithCascade(final String schemaSetName) {
try {
cpsModuleService.deleteSchemaSet(NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME, schemaSetName,
CASCADE_DELETE_ALLOWED);
- } catch (final Exception e) {
- log.warn("Schema set {} delete failed, reason {}", schemaSetName, e.getMessage());
+ } catch (final SchemaSetNotFoundException schemaSetNotFoundException) {
+ log.warn("Schema set {} does not exist or already deleted", schemaSetName);
}
}
- private void syncAndCreateSchemaSet(final PersistenceCmHandle persistenceCmHandle) {
- final List<ModuleReference> moduleReferencesFromCmHandle =
- dmiModelOperations.getModuleReferences(persistenceCmHandle);
- final List<ModuleReference> existingModuleReferences = new ArrayList<>();
- final List<ModuleReference> unknownModuleReferences = new ArrayList<>();
- prepareModuleSubsets(moduleReferencesFromCmHandle, existingModuleReferences, unknownModuleReferences);
+ private void syncAndCreateSchemaSet(final YangModelCmHandle yangModelCmHandle) {
+ final Collection<ModuleReference> moduleReferencesFromCmHandle =
+ dmiModelOperations.getModuleReferences(yangModelCmHandle);
+
+ final Collection<ModuleReference> identifiedNewModuleReferencesFromCmHandle = cpsModuleService
+ .identifyNewModuleReferences(moduleReferencesFromCmHandle);
+
+ final Collection<ModuleReference> existingModuleReferencesFromCmHandle =
+ moduleReferencesFromCmHandle.stream().filter(moduleReferenceFromCmHandle ->
+ !identifiedNewModuleReferencesFromCmHandle.contains(moduleReferenceFromCmHandle)
+ ).collect(Collectors.toList());
- final Map<String, String> newYangResourcesModuleNameToContentMap;
- if (unknownModuleReferences.isEmpty()) {
- newYangResourcesModuleNameToContentMap = new HashMap<>();
+ final Map<String, String> newModuleNameToContentMap;
+ if (identifiedNewModuleReferencesFromCmHandle.isEmpty()) {
+ newModuleNameToContentMap = new HashMap<>();
} else {
- newYangResourcesModuleNameToContentMap = dmiModelOperations.getNewYangResourcesFromDmi(persistenceCmHandle,
- unknownModuleReferences);
+ newModuleNameToContentMap = dmiModelOperations.getNewYangResourcesFromDmi(yangModelCmHandle,
+ identifiedNewModuleReferencesFromCmHandle);
}
cpsModuleService
- .createSchemaSetFromModules(NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME, persistenceCmHandle.getId(),
- newYangResourcesModuleNameToContentMap, existingModuleReferences);
+ .createSchemaSetFromModules(NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME, yangModelCmHandle.getId(),
+ newModuleNameToContentMap, existingModuleReferencesFromCmHandle);
}
- private void prepareModuleSubsets(final List<ModuleReference> moduleReferencesFromCmHandle,
- final List<ModuleReference> existingModuleReferences,
- final List<ModuleReference> unknownModuleReferences) {
-
- final Collection<ModuleReference> knownModuleReferencesInCps =
- cpsModuleService.getYangResourceModuleReferences(NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME);
+ private void createAnchor(final YangModelCmHandle yangModelCmHandle) {
+ cpsAdminService.createAnchor(NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME, yangModelCmHandle.getId(),
+ yangModelCmHandle.getId());
+ }
- for (final ModuleReference moduleReferenceFromDmiForCmHandle : moduleReferencesFromCmHandle) {
- if (knownModuleReferencesInCps.contains(moduleReferenceFromDmiForCmHandle)) {
- existingModuleReferences.add(moduleReferenceFromDmiForCmHandle);
- } else {
- unknownModuleReferences.add(moduleReferenceFromDmiForCmHandle);
- }
+ private static boolean hasTopicParameter(final String topicName) {
+ if (topicName == null) {
+ return false;
}
+ if (TOPIC_NAME_PATTERN.matcher(topicName).matches()) {
+ return true;
+ }
+ throw new InvalidTopicException("Topic name " + topicName + " is invalid", "invalid topic");
}
- private void createAnchor(final PersistenceCmHandle persistenceCmHandle) {
- cpsAdminService.createAnchor(NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME, persistenceCmHandle.getId(),
- persistenceCmHandle.getId());
+ private Map<String, Object> buildDmiResponse(final String requestId) {
+ final Map<String, Object> dmiResponseMap = new HashMap<>();
+ dmiResponseMap.put("requestId", requestId);
+ return dmiResponseMap;
}
-
-
-}
+ private Object validateTopicNameAndGetResourceData(final String cmHandleId,
+ final String resourceIdentifier,
+ final String acceptParamInHeader,
+ final DmiOperations.DataStoreEnum dataStore,
+ final String optionsParamInQuery,
+ final String topicParamInQuery) {
+ final boolean processAsynchronously = hasTopicParameter(topicParamInQuery);
+ if (processAsynchronously) {
+ final String resourceDataRequestId = UUID.randomUUID().toString();
+ return ResponseEntity.status(HttpStatus.OK)
+ .body(buildDmiResponse(resourceDataRequestId));
+ }
+ final ResponseEntity<?> responseEntity = dmiDataOperations.getResourceDataFromDmi(
+ cmHandleId, resourceIdentifier, optionsParamInQuery, acceptParamInHeader,
+ dataStore, NO_REQUEST_ID, NO_TOPIC);
+ return handleResponse(responseEntity, "Not able to get resource data.");
+ }
+}
\ No newline at end of file