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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 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.so.sdcsimulator.providers;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Optional;
import org.onap.so.sdcsimulator.utils.Constants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.ClassPathResource;
import org.springframework.stereotype.Service;
import org.springframework.util.StreamUtils;
/**
* @author Eoin Hanan (eoin.hanan@est.tech)
*/
@Service
public class ResourceProviderImpl implements ResourceProvider {
private static final Logger LOGGER = LoggerFactory.getLogger(ResourceProvider.class);
private final String resourceLocation;
public ResourceProviderImpl(@Value("${sdc.resource.location:/app/csars/}") final String resourceLocation) {
this.resourceLocation = resourceLocation;
}
@Override
public Optional<byte[]> getResource(final String csarId) {
try {
final Optional<InputStream> optionalInputStream = getInputStream(csarId);
if (optionalInputStream.isPresent()) {
return Optional.of(StreamUtils.copyToByteArray(optionalInputStream.get()));
}
} catch (final IOException ioException) {
LOGGER.warn("Unable to create file stream ...", ioException);
}
return Optional.empty();
}
@Override
public Optional<InputStream> getInputStream(final String csarId) throws IOException {
final Path filePath = Paths.get(resourceLocation, csarId + ".csar");
if (Files.exists(filePath)) {
return Optional.of(Files.newInputStream(filePath));
}
LOGGER.info("Couldn't find file on file system '{}', will return default csar", filePath);
final ClassPathResource classPathResource = new ClassPathResource(getDefaultCsarPath(), this.getClass());
if (classPathResource.exists()) {
return Optional.of(classPathResource.getInputStream());
}
LOGGER.error("Couldn't find default csar in classpath ....");
return Optional.empty();
}
/*
* Used in test
*/
String getDefaultCsarPath() {
return Constants.DEFAULT_CSAR_PATH;
}
}
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