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package org.onap.sdc.dcae.composition.impl;
import com.google.gson.Gson;
import org.apache.commons.lang.StringUtils;
import org.onap.sdc.common.onaplog.enums.LogLevel;
import org.onap.sdc.dcae.catalog.commons.Recycler;
import org.onap.sdc.dcae.composition.restmodels.MessageResponse;
import org.onap.sdc.dcae.composition.restmodels.VfcmtData;
import org.onap.sdc.dcae.composition.restmodels.sdc.Artifact;
import org.onap.sdc.dcae.composition.restmodels.sdc.ResourceDetailed;
import org.onap.sdc.dcae.errormng.ActionStatus;
import org.onap.sdc.dcae.errormng.ErrConfMgr;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Component;
import org.springframework.util.Base64Utils;
import org.springframework.web.client.RestTemplate;
import org.yaml.snakeyaml.Yaml;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.StringReader;
import java.util.*;
import java.util.stream.Collectors;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
@Component
@ConfigurationProperties(prefix="blueprinter")
public class BlueprintBusinessLogic extends CompositionBusinessLogic {
private String uri;
public void setUri(String uri) {
this.uri = uri;
}
public ResponseEntity generateAndSaveBlueprint(String userId, String context, String vfcmtUuid, String serviceUuid, String vfiName, String flowType, String requestId) {
try {
// prepare - fetch vfcmt and cdump
ResourceDetailed vfcmt = getSdcRestClient().getResource(vfcmtUuid, requestId);
Artifact cdumpArtifactData = fetchCdump(vfcmt, requestId);
if (null == cdumpArtifactData) {
errLogger.log(LogLevel.ERROR, this.getClass().getName(), "Composition not found on vfcmt {}", vfcmtUuid);
return ErrConfMgr.INSTANCE.buildErrorResponse(ActionStatus.MISSING_TOSCA_FILE, "", vfcmt.getName());
}
debugLogger.log(LogLevel.DEBUG, this.getClass().getName(), "Found the cdump (composition.yml) on top of VFCMT {}", vfcmtUuid);
String cdump = cdumpArtifactData.getPayloadData();
debugLogger.log(LogLevel.DEBUG, this.getClass().getName(), "Going to use python procedure to create a blueprint....");
String input = prepareInput(cdump, requestId);
if (null == input) {
return ErrConfMgr.INSTANCE.buildErrorResponse(ActionStatus.SUBMIT_BLUEPRINT_ERROR);
}
String resultBlueprintCreation = new RestTemplate().postForObject(uri, new HttpEntity<>(input), String.class);
if (StringUtils.isEmpty(resultBlueprintCreation)) {
errLogger.log(LogLevel.ERROR, this.getClass().getName(), "Error occurred during blueprint generation");
return ErrConfMgr.INSTANCE.buildErrorResponse(ActionStatus.GENERATE_BLUEPRINT_ERROR, "", vfcmt.getName());
}
debugLogger.log(LogLevel.DEBUG, this.getClass().getName(), "BLUEPRINT:\n{}", resultBlueprintCreation);
// 1806 US374595 flowType in cdump
String flowTypeFromCdump = extractFlowTypeFromCdump(cdump);
// support backward compatibility
if(StringUtils.isBlank(flowTypeFromCdump)) {
flowTypeFromCdump = flowType;
}
VfcmtData vfcmtData = new VfcmtData(vfcmt, vfiName, flowTypeFromCdump, serviceUuid);
Artifact blueprintArtifactResult = submitComposition(userId, context, vfcmtData, resultBlueprintCreation, requestId);
if (null == blueprintArtifactResult) {
return ErrConfMgr.INSTANCE.buildErrorResponse(ActionStatus.SUBMIT_BLUEPRINT_ERROR);
}
MessageResponse response = new MessageResponse();
response.setSuccessResponse("Blueprint build complete \n. Blueprint=" + blueprintArtifactResult.getArtifactName());
return new ResponseEntity<>(response, HttpStatus.OK);
} catch (Exception e) {
errLogger.log(LogLevel.ERROR, this.getClass().getName(), e.getMessage());
return ErrConfMgr.INSTANCE.handleException(e, ErrConfMgr.ApiType.SUBMIT_BLUEPRINT);
}
}
private String prepareInput(String cdump, String requestId) throws IOException {
debugLogger.log(LogLevel.DEBUG, this.getClass().getName(), "fetched cdump payload: {}", cdump);
Map cdumpToTosca = new Recycler().recycle(new StringReader(cdump));
Set<String> dcaeComponentsUuids = extractComponentUuids(cdumpToTosca);
List<Map> extractedModels = Collections.synchronizedSet(dcaeComponentsUuids).parallelStream().map(id -> fetchAndExtractModel(id, requestId)).filter(Objects::nonNull).collect(Collectors.toList());
// aggregation of parallel stream fetch results - exceptions are swallowed and we check the final size to verify no errors occurred
if(dcaeComponentsUuids.size() != extractedModels.size()) {
errLogger.log(LogLevel.ERROR, this.getClass().getName(), "error: {} distinct DCAE components were mapped to {} tosca lab input models.", dcaeComponentsUuids.size(), extractedModels.size());
return null;
}
return new Gson().toJson(new ToscaLabInput(Base64Utils.encodeToString(new Yaml().dump(cdumpToTosca).getBytes()), extractedModels));
}
private Set<String> extractComponentUuids(Map cdump) {
//the node description contains the UUID of the resource declaring it
//if the description is the URI the resource uuid is the 5th path element (backward compatibility)
// TODO there has to be a better way
Map<String, Map<String, Object>> nodes = (Map<String, Map<String, Object>>)((Map<String, Object>)cdump.get("topology_template")).get("node_templates");
return nodes.values().stream()
.map(n -> (String)n.get("description"))
.filter(StringUtils::isNotBlank)
.map(d -> StringUtils.substringBetween(d, "resources/", "/"))
.collect(Collectors.toSet());
}
private class ToscaLabInput {
private String template;
private List<Map> models;
ToscaLabInput(String template, List<Map> models){
this.template = template;
this.models = models;
}
}
private Map<String, String> fetchAndExtractModel(String uuid, String requestId) {
try {
return extractModelFromCsar(sdcRestClient.getResourceToscaModel(uuid, requestId));
} catch (Exception e) {
errLogger.log(LogLevel.ERROR, this.getClass().getName(), "model extraction error: {}", e);
return null;
}
}
private Map<String, String> extractModelFromCsar(byte[] csar) throws IOException {
//we are only interested in unzipping the 3 files under Artifacts/Deployment/DCAE_TOSCA/
String dcaeToscaDir = "Artifacts/Deployment/DCAE_TOSCA/";
Map<String, String> extracted = new HashMap<>();
try (ZipInputStream zis = new ZipInputStream(new ByteArrayInputStream(csar))) {
ZipEntry ze = zis.getNextEntry();
while (ze != null && 3 != extracted.size()) {
if(ze.getName().startsWith(dcaeToscaDir)) {
extracted.put(ze.getName().replace(dcaeToscaDir,"").split("\\.")[0], Base64Utils.encodeToString(extractFile(zis)));
}
ze = zis.getNextEntry();
}
return extracted;
}
}
}
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