2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2021 Nordix Foundation
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 * SPDX-License-Identifier: Apache-2.0
17 * ============LICENSE_END=========================================================
19 package org.openecomp.sdc.be.components.impl;
21 import java.io.ByteArrayOutputStream;
22 import java.io.IOException;
23 import java.io.InputStream;
24 import java.util.List;
26 import java.util.Optional;
27 import org.apache.commons.lang3.StringUtils;
28 import org.openecomp.sdc.be.model.Model;
29 import org.openecomp.sdc.be.model.jsonjanusgraph.operations.exception.ModelOperationExceptionSupplier;
30 import org.openecomp.sdc.be.model.operations.impl.ModelOperation;
31 import org.openecomp.sdc.common.zip.ZipUtils;
32 import org.openecomp.sdc.common.zip.exception.ZipException;
33 import org.slf4j.Logger;
34 import org.slf4j.LoggerFactory;
35 import org.springframework.beans.factory.annotation.Autowired;
36 import org.springframework.stereotype.Component;
39 * This class is responsible for handling the business logic of a Model.
41 @Component("modelBusinessLogic")
42 public class ModelBusinessLogic {
44 private static final Logger LOGGER = LoggerFactory.getLogger(ModelBusinessLogic.class);
45 private final ModelOperation modelOperation;
48 public ModelBusinessLogic(final ModelOperation modelOperation) {
49 this.modelOperation = modelOperation;
52 public Model createModel(final Model model) {
53 LOGGER.debug("createModel: creating model {}", model);
54 return modelOperation.createModel(model, false);
57 public Optional<Model> findModel(final String modelName) {
58 if (StringUtils.isEmpty(modelName)) {
59 return Optional.empty();
61 return modelOperation.findModelByName(modelName);
65 * Loads the list of models.
67 * @return the list of models
69 public List<Model> listModels() {
70 return modelOperation.findAllModels();
73 public void createModelImports(final String modelName, final InputStream modelImportsZip) {
74 if (StringUtils.isEmpty(modelName)) {
75 throw ModelOperationExceptionSupplier.invalidModel(modelName).get();
77 if (modelImportsZip == null) {
78 throw ModelOperationExceptionSupplier.emptyModelImports().get();
80 if (findModel(modelName).isEmpty()) {
81 throw ModelOperationExceptionSupplier.invalidModel(modelName).get();
84 final var fileBytes = readBytes(modelImportsZip);
85 final Map<String, byte[]> zipFilesPathContentMap = unzipInMemory(fileBytes);
86 if (zipFilesPathContentMap.isEmpty()) {
87 throw ModelOperationExceptionSupplier.emptyModelImports().get();
90 modelOperation.createModelImports(modelName, zipFilesPathContentMap);
93 private Map<String, byte[]> unzipInMemory(final byte[] fileBytes) {
95 return ZipUtils.readZip(fileBytes, false);
96 } catch (final ZipException e) {
97 throw ModelOperationExceptionSupplier.couldNotReadImports().get();
101 private byte[] readBytes(final InputStream modelImportsZip) {
102 try (final InputStream in = modelImportsZip; final ByteArrayOutputStream os = new ByteArrayOutputStream()) {
103 final var buffer = new byte[1024];
105 while ((len = in.read(buffer)) != -1) {
106 os.write(buffer, 0, len);
108 return os.toByteArray();
109 } catch (final IOException e) {
110 LOGGER.debug("Could not read the model imports zip", e);
111 throw ModelOperationExceptionSupplier.couldNotReadImports().get();