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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2018 Ericsson. All rights reserved.
* ================================================================================
* 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.policy.distribution.reception.decoding.pdpx;
import java.io.File;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.distribution.model.Csar;
import org.onap.policy.distribution.model.PolicyInput;
import org.onap.policy.distribution.reception.decoding.PolicyDecoder;
import org.onap.policy.distribution.reception.decoding.PolicyDecodingException;
import org.onap.sdc.tosca.parser.api.ISdcCsarHelper;
import org.onap.sdc.tosca.parser.impl.SdcToscaParserFactory;
import org.onap.sdc.toscaparser.api.NodeTemplate;
/**
* Decodes PDP-X policies from a CSAR file.
*/
public class PolicyDecoderCsarPdpx implements PolicyDecoder<Csar, PdpxPolicy> {
private static final Logger LOGGER = FlexLogger.getLogger(PolicyDecoderCsarPdpx.class);
@Override
public Collection<PdpxPolicy> decode(final Csar csar) throws PolicyDecodingException {
final List<PdpxPolicy> lPdpxPolicy = new ArrayList<>();
final ISdcCsarHelper sdcCsarHelper = parseCsar(csar);
final List<NodeTemplate> lnodeVf = sdcCsarHelper.getServiceVfList();
LOGGER.debug("the size of Vf = " + lnodeVf.size());
final ExtractFromNode extractFromNode = new ExtractFromNode();
extractFromNode.setSdcCsarHelper(sdcCsarHelper);
for (final NodeTemplate node : lnodeVf) {
final PdpxPolicy ret = extractFromNode.extractInfo(node);
if (ret != null) {
lPdpxPolicy.add(ret);
}
}
return lPdpxPolicy;
}
@Override
public boolean canHandle(final PolicyInput policyInput) {
return policyInput.getClass().isAssignableFrom(Csar.class);
}
/**
* Parse the input Csar using SDC TOSCA parser.
*
* @param csar represents the service TOSCA Csar
* @return the object to represents the content of input csar
* @throws PolicyDecodingException if parse fails
*/
public ISdcCsarHelper parseCsar(final Csar csar) throws PolicyDecodingException {
ISdcCsarHelper sdcCsarHelper;
try {
final SdcToscaParserFactory factory = SdcToscaParserFactory.getInstance();
LOGGER.debug("Csar File Path = " + csar.getCsarPath());
final File csarFile = new File(csar.getCsarPath());
sdcCsarHelper = factory.getSdcCsarHelper(csarFile.getAbsolutePath());
} catch (final Exception exp) {
final String message = "Failed passing the csar file";
LOGGER.error(message, exp);
throw new PolicyDecodingException(message, exp);
}
return sdcCsarHelper;
}
@Override
public void configure(final String parameterGroupName) {}
}
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