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+/*
+ * ============LICENSE_START=======================================================
+ * VES-OPENAPI-MANAGER
+ * ================================================================================
+ * Copyright (C) 2021 Nokia. 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.ves.openapi.manager.service;
+
+import lombok.extern.log4j.Log4j2;
+import org.onap.sdc.api.notification.IArtifactInfo;
+import org.onap.sdc.http.SdcConnectorClient;
+import org.onap.sdc.impl.DistributionClientDownloadResultImpl;
+import org.onap.ves.openapi.manager.config.DistributionClientConfig;
+import org.onap.ves.openapi.manager.exceptions.ArtifactException;
+import org.onap.ves.openapi.manager.model.Artifact;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+/**
+ * ArtifactsCollector - Collector of artifact contents from distributed service,
+ * downloads artifacts contents basing on artifacts descriptions
+ */
+@Log4j2
+@Component
+public class ArtifactsCollector {
+
+ private static final String QUOTATION_MARK = "\"";
+ private static final int ARTIFACT_NAME_INDEX_NO_QUOTATION = 0;
+ private static final int ARTIFACT_NAME_INDEX_WITH_QUOTATION = 1;
+ private static final int NAME_WITH_QUOTATION_LENGTH = 2;
+
+ private final SdcConnectorClient sdcConnectorClient;
+
+ /**
+ * Constructor of ArtifactsCollector
+ * @param sdcConnectorClient SdcConnectorClient object
+ */
+ @Autowired
+ public ArtifactsCollector(SdcConnectorClient sdcConnectorClient) {
+ this.sdcConnectorClient = sdcConnectorClient;
+ }
+
+ /**
+ * @param artifacts List of IArtifactInfo objects, which are descriptions of artifacts
+ * @return List of Artifacts, each object contains description and content of artifact
+ */
+ public List<Artifact> pullArtifacts(List<IArtifactInfo> artifacts) {
+ log.info("Downloading artifacts");
+ List<IArtifactInfo> artifactDescriptions = filterVesEventsArtifacts(artifacts);
+ return artifactDescriptions.stream()
+ .map(sdcConnectorClient::downloadArtifact)
+ .map(downloadResult -> mapDownloadResultToArtifactContent(downloadResult, artifactDescriptions))
+ .collect(Collectors.toList());
+ }
+
+ private List<IArtifactInfo> filterVesEventsArtifacts(List<IArtifactInfo> artifacts) {
+ return artifacts.stream()
+ .filter(artifactInfo ->
+ artifactInfo.getArtifactType().equals(DistributionClientConfig.VES_EVENTS_ARTIFACT_TYPE))
+ .collect(Collectors.toList());
+ }
+
+ private Artifact mapDownloadResultToArtifactContent(DistributionClientDownloadResultImpl downloadResult,
+ List<IArtifactInfo> artifactDescriptions) {
+ String artifactName = parseArtifactName(downloadResult);
+ Optional<IArtifactInfo> artifact = findArtifactDescription(artifactDescriptions, artifactName);
+ return artifact.map(artifactInfo ->
+ new Artifact(artifactInfo, downloadResult.getArtifactPayload()))
+ .orElseThrow(ArtifactException::new);
+ }
+
+ private String parseArtifactName(DistributionClientDownloadResultImpl artifact) {
+ String[] name = artifact.getArtifactName().split(QUOTATION_MARK);
+ boolean doesContainQuotationMark = name.length >= NAME_WITH_QUOTATION_LENGTH;
+ return doesContainQuotationMark ? name[ARTIFACT_NAME_INDEX_WITH_QUOTATION] : name[ARTIFACT_NAME_INDEX_NO_QUOTATION];
+ }
+
+ private Optional<IArtifactInfo> findArtifactDescription(List<IArtifactInfo> artifacts, String artifactName) {
+ return artifacts.stream().filter(a -> a.getArtifactName().equals(artifactName)).findFirst();
+ }
+}