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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 com.fasterxml.jackson.databind.ObjectMapper;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.time.OffsetDateTime;
import java.util.Map;
import lombok.NonNull;
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.onap.cps.utils.JsonObjectMapper;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.stereotype.Service;
@Slf4j
@Service
@RequiredArgsConstructor
abstract class AbstractModelLoader implements ModelLoader {
private final CpsAdminService cpsAdminService;
private final CpsModuleService cpsModuleService;
private final CpsDataService cpsDataService;
private static final int EXIT_CODE_ON_ERROR = 1;
private final JsonObjectMapper jsonObjectMapper = new JsonObjectMapper(new ObjectMapper());
@Value("${ncmp.model-loader.maximum-attempt-count:20}")
int maximumAttemptCount;
@Value("${ncmp.timers.model-loader.retry-time-ms:1000}")
long retryTimeMs;
@Override
public void onApplicationEvent(@NonNull final ApplicationReadyEvent applicationReadyEvent) {
try {
onboardOrUpgradeModel();
} catch (final NcmpStartUpException ncmpStartUpException) {
log.error("Onboarding model for NCMP failed: {} ", ncmpStartUpException.getMessage());
SpringApplication.exit(applicationReadyEvent.getApplicationContext(), () -> EXIT_CODE_ON_ERROR);
}
}
void waitUntilDataspaceIsAvailable(final String dataspaceName) {
int attemptCount = 0;
while (cpsAdminService.getDataspace(dataspaceName) == null) {
if (attemptCount < maximumAttemptCount) {
try {
Thread.sleep(attemptCount * retryTimeMs);
log.info("Retrieving dataspace {} ... {} attempt(s) ", dataspaceName, ++attemptCount);
} catch (final InterruptedException e) {
Thread.currentThread().interrupt();
}
} else {
throw new NcmpStartUpException("Retrieval of NCMP dataspace failed",
dataspaceName + " not available (yet)");
}
}
}
void createSchemaSet(final String dataspaceName, final String schemaSetName, final String resourceName) {
try {
final Map<String, String> yangResourceContentMap = createYangResourceToContentMap(resourceName);
cpsModuleService.createSchemaSet(dataspaceName, schemaSetName, yangResourceContentMap);
} catch (final AlreadyDefinedException alreadyDefinedException) {
log.warn("Creating new schema set failed as schema set already exists");
} catch (final Exception exception) {
log.error("Creating schema set for subscription model failed: {} ", exception.getMessage());
throw new NcmpStartUpException("Creating schema set failed", exception.getMessage());
}
}
void createAnchor(final String dataspaceName, final String schemaSetName, final String anchorName) {
try {
cpsAdminService.createAnchor(dataspaceName, schemaSetName, anchorName);
} catch (final AlreadyDefinedException alreadyDefinedException) {
log.warn("Creating new anchor failed as anchor already exists");
} catch (final Exception exception) {
log.error("Creating anchor for subscription model failed: {} ", exception.getMessage());
throw new NcmpStartUpException("Creating anchor failed", exception.getMessage());
}
}
void createTopLevelDataNode(final String dataspaceName,
final String anchorName,
final String dataNodeName) {
final String nodeData = jsonObjectMapper.asJsonString(Map.of(dataNodeName, Map.of()));
try {
cpsDataService.saveData(dataspaceName, anchorName, nodeData, OffsetDateTime.now());
} catch (final AlreadyDefinedException exception) {
log.warn("Creating new data node '{}' failed as data node already exists", dataNodeName);
} catch (final Exception exception) {
log.error("Creating data node for subscription model failed: {}", exception.getMessage());
throw new NcmpStartUpException("Creating data node failed", exception.getMessage());
}
}
Map<String, String> createYangResourceToContentMap(final String resourceName) {
return Map.of(resourceName, getFileContentAsString("models/" + resourceName));
}
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());
}
}
}
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