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package org.onap.sdc.dcae.catalog.asdc;
import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.lang3.StringUtils;
import org.json.JSONArray;
import org.json.JSONObject;
import org.onap.sdc.common.onaplog.Enums.LogLevel;
import org.onap.sdc.common.onaplog.OnapLoggerDebug;
import org.onap.sdc.common.onaplog.OnapLoggerError;
import org.onap.sdc.dcae.catalog.commons.Actions;
import org.onap.sdc.dcae.catalog.commons.Future;
import org.onap.sdc.dcae.catalog.commons.Futures;
import org.onap.sdc.dcae.catalog.commons.Recycler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import org.springframework.util.Base64Utils;
import java.io.*;
import java.net.URI;
import java.util.List;
import java.util.Spliterators;
import java.util.UUID;
import java.util.function.BiFunction;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
@Component("asdcutils")
@Scope("singleton")
@ConfigurationProperties(prefix="asdcutils")
public class ASDCUtils {
private static final String ARTIFACT_URL = "artifactURL";
private static final String ARTIFACT_NAME = "artifactName";
private static OnapLoggerError errLogger = OnapLoggerError.getInstance();
private static OnapLoggerDebug debugLogger = OnapLoggerDebug.getInstance();
@Autowired
private ASDC asdc;
@Autowired
private Blueprinter blueprint;
public ASDCUtils() {
// Making sonar happy
}
public ASDCUtils(URI theASDCURI) {
this(theASDCURI, null);
}
public ASDCUtils(URI theASDCURI, URI theBlueprinterURI) {
this.asdc = new ASDC();
this.asdc.setUri(theASDCURI);
if (theBlueprinterURI != null) {
this.blueprint = new Blueprinter();
this.blueprint.setUri(theBlueprinterURI);
}
}
public ASDCUtils(ASDC theASDC) {
this(theASDC, null);
}
public ASDCUtils(ASDC theASDC, Blueprinter theBlueprinter) {
this.asdc = theASDC;
this.blueprint = theBlueprinter;
}
private static JSONObject lookupArtifactInfo(JSONArray theArtifacts, String theName) {
for (int i = 0; theArtifacts != null && i < theArtifacts.length(); i++) {
JSONObject artifactInfo = theArtifacts.getJSONObject(i);
if (theName.equals(artifactInfo.getString(ARTIFACT_NAME))) {
debugLogger.log(LogLevel.DEBUG, ASDCUtils.class.getName(), "Found artifact info {}", artifactInfo);
return artifactInfo;
}
}
return null;
}
private static byte[] extractArtifactData(InputStream theEntryStream) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
byte[] buff = new byte[4096];
int cnt = 0;
while ((cnt = theEntryStream.read(buff)) != -1) {
baos.write(buff, 0, cnt);
}
} finally {
baos.close();
}
return baos.toByteArray();
}
public Future<Future<String>> buildBlueprintViaToscaLab(Reader theCdump) {
return processCdump(theCdump, (theTemplate, theArchives) -> {
Blueprinter.BlueprintAction action = blueprint.generateBlueprint();
processArtifacts(theArchives, (JSONObject theInfo, byte[] theData) -> new JSONObject().put(theInfo.getString(ARTIFACT_NAME).split("\\.")[0], Base64Utils.encodeToString(theData)),
(Stream<JSONObject> theAssetArtifacts) -> theAssetArtifacts.reduce(new JSONObject(), ASDC::merge)).forEach(artifactInfo -> action.withModelInfo(artifactInfo));
return action.withTemplateData(Recycler.toString(theTemplate).getBytes()).execute();
});
}
/* The common process of recycling, retrieving all related artifacts and then doing 'something' */
private <T> Future<T> processCdump(Reader theCdump, BiFunction<Object, List, T> theProcessor) {
final Recycler recycler = new Recycler();
Object template = null;
try {
template = recycler.recycle(theCdump);
} catch (Exception x) {
return Futures.failedFuture(x);
}
JXPathContext jxroot = JXPathContext.newContext(template);
jxroot.setLenient(true);
//based on the output of ASDCCatalog the node description will contain the UUID of the resource declaring it
//the desc contains the full URI and the resource uuid is the 5th path element
List uuids = (List) StreamSupport.stream(Spliterators.spliteratorUnknownSize(jxroot.iterate("topology_template/node_templates/*/description"), 16), false).distinct().filter(desc -> desc != null)
.map(desc -> desc.toString().split("/")[5]).collect(Collectors.toList());
//serialized fetch version
final Actions.Sequence sequencer = new Actions.Sequence();
uuids.stream().forEach(uuid -> {
UUID rid = UUID.fromString((String) uuid);
sequencer.add(this.asdc.getAssetArchiveAction(ASDC.AssetType.resource, rid));
sequencer.add(this.asdc.getAssetAction(ASDC.AssetType.resource, rid, JSONObject.class));
});
final Object tmpl = template;
return Futures.advance(sequencer.execute(), (List theArchives) -> theProcessor.apply(tmpl, theArchives));
}
private static <T> Stream<T> processArtifacts(List theArtifactData, BiFunction<JSONObject, byte[], T> theProcessor, Function<Stream<T>, T> theAggregator) {
Stream.Builder<T> assetBuilder = Stream.builder();
for (int i = 0; i < theArtifactData.size(); i = i + 2) { //cute old style loop
JSONObject assetInfo = (JSONObject) theArtifactData.get(i + 1);
byte[] assetData = (byte[]) theArtifactData.get(i + 0);
JSONArray artifacts = assetInfo.optJSONArray("artifacts");
Stream.Builder<T> artifactBuilder = Stream.builder();
try (ZipInputStream zipper = new ZipInputStream(new ByteArrayInputStream(assetData))){
//we process the artifacts in the order they are stored in the archive .. fugly
processZipArtifacts(theProcessor, artifacts, artifactBuilder, zipper);
} catch (IOException iox) {
errLogger.log(LogLevel.ERROR, ASDC.class.getName(), "IOException: {}", iox);
return null;
}
if (theAggregator != null) {
assetBuilder.add(theAggregator.apply(artifactBuilder.build()));
} else {
artifactBuilder.build().forEach(entry -> assetBuilder.add(entry));
}
}
return assetBuilder.build();
}
private static <T> void processZipArtifacts(BiFunction<JSONObject, byte[], T> theProcessor, JSONArray artifacts, Stream.Builder<T> artifactBuilder, ZipInputStream zipper) throws IOException {
for (ZipEntry zipped = zipper.getNextEntry(); zipped != null; zipped = zipper.getNextEntry()) {
JSONObject artifactInfo = lookupArtifactInfo(artifacts, StringUtils.substringAfterLast(zipped.getName(), "/"));
if (artifactInfo != null) {
artifactBuilder.add(theProcessor.apply(artifactInfo, extractArtifactData(zipper)));
}
zipper.closeEntry();
}
}
}
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