diff options
Diffstat (limited to 'openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/PnfdTransformationDescriptorReader.java')
-rw-r--r-- | openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/PnfdTransformationDescriptorReader.java | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/PnfdTransformationDescriptorReader.java b/openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/PnfdTransformationDescriptorReader.java new file mode 100644 index 0000000000..6ef5caf21b --- /dev/null +++ b/openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/PnfdTransformationDescriptorReader.java @@ -0,0 +1,89 @@ +/* + * ============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.openecomp.core.converter.impl.pnfd; + +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.InputStream; +import java.util.Collections; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.stream.Collectors; +import org.apache.commons.collections.CollectionUtils; +import org.onap.sdc.tosca.services.YamlUtil; +import org.openecomp.core.converter.impl.pnfd.parser.TransformationYamlParser; +import org.openecomp.core.converter.pnfd.model.Transformation; +import org.openecomp.core.converter.pnfd.model.TransformationDescription; +import org.openecomp.sdc.logging.api.Logger; +import org.openecomp.sdc.logging.api.LoggerFactory; + +/** + * Reads the PNF Transformation Description + */ +public class PnfdTransformationDescriptorReader { + + private static final Logger LOGGER = LoggerFactory.getLogger(PnfdTransformationDescriptorReader.class); + + /** + * Parse the transformation description to {@link TransformationDescription} class. + * @return + * The {@link TransformationDescription} instance. + */ + public TransformationDescription parse(final InputStream transformationDescriptionInputStream) { + final List<Object> transformationList = readDescriptionYaml(transformationDescriptionInputStream); + final Set<Transformation> transformationSet = parseTransformationList(transformationList); + + return new TransformationDescription(transformationSet); + } + + /** + * Reads the description file that has the required YAML format. + * @return + * The yaml parsed to Object + */ + private List<Object> readDescriptionYaml(final InputStream transformationDescriptionPath) { + try (final InputStream fileInputStream = transformationDescriptionPath) { + return YamlUtil.yamlToList(fileInputStream).orElse(Collections.emptyList()); + } catch (final FileNotFoundException e) { + LOGGER.error("Could not find the resource on path.", e); + } catch (final IOException e) { + LOGGER.error("Could not load resource.", e); + } + return Collections.emptyList(); + } + + /** + * Parse the transformation list represented in a YAML object to {@link Transformation}. + * @param transformationYamlList the YAML object read from the transformation description file + * @return + * The set of transformations represented as {@link Transformation} class + */ + private Set<Transformation> parseTransformationList(final List<Object> transformationYamlList) { + if (CollectionUtils.isEmpty(transformationYamlList)) { + return Collections.emptySet(); + } + + return transformationYamlList.stream() + .map(conversionMap -> TransformationYamlParser.parse((Map<String, Object>) conversionMap)) + .collect(Collectors.toSet()); + } + +} |