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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2023 Nordix Foundation
* ================================================================================
* Licensed 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.cps.ncmp.init;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.time.OffsetDateTime;
import java.util.Map;
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.impl.exception.NcmpStartUpException;
import org.onap.cps.spi.exceptions.AlreadyDefinedException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.stereotype.Component;
@Slf4j
@Component
@RequiredArgsConstructor
public class SubscriptionModelLoader implements ModelLoader {
private final CpsAdminService cpsAdminService;
private final CpsModuleService cpsModuleService;
private final CpsDataService cpsDataService;
private static final String SUBSCRIPTION_MODEL_FILENAME = "subscription.yang";
private static final String SUBSCRIPTION_MODEL_RESOURCE_PATH = "model/" + SUBSCRIPTION_MODEL_FILENAME;
private static final String SUBSCRIPTION_DATASPACE_NAME = "NCMP-Admin";
private static final String SUBSCRIPTION_ANCHOR_NAME = "AVC-Subscriptions";
private static final String SUBSCRIPTION_SCHEMASET_NAME = "subscriptions";
private static final String SUBSCRIPTION_REGISTRY_DATANODE_NAME = "subscription-registry";
@Value("${ncmp.model-loader.subscription:false}")
private boolean subscriptionModelLoaderEnabled;
/**
* Method calls boarding subscription model when Application is ready.
*
* @param applicationReadyEvent the event to respond to
*/
@Override
public void onApplicationEvent(final ApplicationReadyEvent applicationReadyEvent) {
try {
if (subscriptionModelLoaderEnabled) {
onboardSubscriptionModel(createYangResourceToContentMap());
} else {
log.info("Subscription Model Loader is disabled");
}
} catch (final NcmpStartUpException ncmpStartUpException) {
log.debug("Onboarding model for NCMP failed: {} ", ncmpStartUpException.getMessage());
SpringApplication.exit(applicationReadyEvent.getApplicationContext(), () -> 1);
}
}
/**
* Method to onboard subscription model for NCMP.
*/
private void onboardSubscriptionModel(final Map<String, String> yangResourceContentMap) {
createSchemaSet(SUBSCRIPTION_DATASPACE_NAME, SUBSCRIPTION_SCHEMASET_NAME, yangResourceContentMap);
createAnchor(SUBSCRIPTION_DATASPACE_NAME, SUBSCRIPTION_SCHEMASET_NAME, SUBSCRIPTION_ANCHOR_NAME);
createTopLevelDataNode(SUBSCRIPTION_DATASPACE_NAME, SUBSCRIPTION_ANCHOR_NAME,
SUBSCRIPTION_REGISTRY_DATANODE_NAME);
}
@Override
public boolean createSchemaSet(final String dataspaceName,
final String schemaSetName,
final Map<String, String> yangResourceContentMap) {
try {
cpsModuleService.createSchemaSet(dataspaceName, schemaSetName, yangResourceContentMap);
} catch (final AlreadyDefinedException exception) {
log.info("Creating new schema set failed as schema set already exists");
} catch (final Exception exception) {
log.debug("Creating schema set for subscription model failed: {} ", exception.getMessage());
throw new NcmpStartUpException("Creating schema set failed", exception.getMessage());
}
return true;
}
/**
* Create Anchor.
*
* @param dataspaceName dataspace name
* @param schemaSetName schema set name
* @param anchorName anchor name
*/
@Override
public boolean createAnchor(final String dataspaceName, final String schemaSetName,
final String anchorName) {
try {
cpsAdminService.createAnchor(dataspaceName, schemaSetName, anchorName);
} catch (final AlreadyDefinedException exception) {
log.info("Creating new anchor failed as anchor already exists");
} catch (final Exception exception) {
log.debug("Creating anchor for subscription model failed: {} ", exception.getMessage());
throw new NcmpStartUpException("Creating anchor failed", exception.getMessage());
}
return true;
}
private void createTopLevelDataNode(final String dataspaceName,
final String anchorName,
final String dataNodeName) {
final String nodeData = "{\"" + dataNodeName + "\":{}}";
try {
cpsDataService.saveData(dataspaceName, anchorName, nodeData, OffsetDateTime.now());
} catch (final AlreadyDefinedException exception) {
log.info("Creating new data node '{}' failed as data node already exists", dataNodeName);
} catch (final Exception exception) {
log.debug("Creating data node for subscription model failed: {}", exception.getMessage());
throw new NcmpStartUpException("Creating data node failed", exception.getMessage());
}
}
private String getFileContentAsString(final String fileName) {
try (InputStream inputStream = getClass().getClassLoader().getResourceAsStream(fileName)) {
return new String(inputStream.readAllBytes(), StandardCharsets.UTF_8);
} catch (final Exception exception) {
final String message = String.format("Onboarding failed as unable to read file: %s", fileName);
log.debug(message);
throw new NcmpStartUpException(message, exception.getMessage());
}
}
private Map<String, String> createYangResourceToContentMap() {
return Map.of(SUBSCRIPTION_MODEL_FILENAME, getFileContentAsString(SUBSCRIPTION_MODEL_RESOURCE_PATH));
}
}
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