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/*
* Copyright (c) 2018 AT&T Intellectual Property.
*
* 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.
*/
package org.openecomp.sdc.asdctool.impl.internal.tool;
import com.thinkaurelius.titan.core.TitanVertex;
import fj.data.Either;
import org.apache.tinkerpop.gremlin.structure.Direction;
import org.apache.tinkerpop.gremlin.structure.Edge;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.openecomp.sdc.asdctool.utils.ConsoleWriter;
import org.openecomp.sdc.be.dao.jsongraph.GraphVertex;
import org.openecomp.sdc.be.dao.jsongraph.TitanDao;
import org.openecomp.sdc.be.dao.jsongraph.types.EdgeLabelEnum;
import org.openecomp.sdc.be.dao.jsongraph.types.VertexTypeEnum;
import org.openecomp.sdc.be.dao.titan.TitanOperationStatus;
import org.openecomp.sdc.be.datatypes.enums.GraphPropertyEnum;
import org.openecomp.sdc.be.model.jsontitan.operations.NodeTypeOperation;
import org.openecomp.sdc.be.model.jsontitan.operations.TopologyTemplateOperation;
import org.openecomp.sdc.be.model.jsontitan.operations.ToscaElementOperation;
import org.openecomp.sdc.common.log.wrappers.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import java.util.Scanner;
@Component("deleteComponentHandler")
public class DeleteComponentHandler extends CommonInternalTool{
@Autowired
private TitanDao titanDao;
@Autowired
private NodeTypeOperation nodeTypeOperation;
@Autowired
private TopologyTemplateOperation topologyTemplateOperation;
private static Logger log = Logger.getLogger(DeleteComponentHandler.class.getName());
public DeleteComponentHandler(){
super("delete");
}
public void deleteComponent(String id, Scanner scanner) {
TitanOperationStatus status = TitanOperationStatus.OK;
GraphVertex metadataVertex = titanDao.getVertexById(id).either(l -> l, r -> null);
if (metadataVertex != null) {
status = handleComponent(scanner, metadataVertex);
} else {
ConsoleWriter.dataLine("No vertex for id", id);
}
if (status == TitanOperationStatus.OK) {
titanDao.commit();
} else {
titanDao.rollback();
}
}
private TitanOperationStatus handleComponent(Scanner scanner, GraphVertex metadataVertex) {
Map<GraphPropertyEnum, Object> metadataProperties = metadataVertex.getMetadataProperties();
TitanOperationStatus status = TitanOperationStatus.OK;
printComponentInfo(metadataProperties);
Iterator<Edge> edges = metadataVertex.getVertex().edges(Direction.OUT, EdgeLabelEnum.VERSION.name());
if (edges != null && edges.hasNext()) {
ConsoleWriter.dataLine("\ncomponent is not latest version and cannot be deleted");
} else {
ConsoleWriter.dataLine("\ncomponent is latest .");
if (isReferenceExist(metadataVertex)) {
ConsoleWriter.dataLine("\nExist reference on component ( istance, proxy or allotted). Component cannot be deleted");
} else {
ConsoleWriter.dataLine("\nNo references. Try to delete (yes/no)?");
String input = scanner.nextLine();
if (input.equalsIgnoreCase("yes")) {
status = handleComponent(metadataVertex);
}
}
}
return status;
}
private TitanOperationStatus handleComponent(GraphVertex metadataVertex) {
ToscaElementOperation toscaElementOperation = getOperationByLabel(metadataVertex);
Iterator<Edge> edges = metadataVertex.getVertex().edges(Direction.IN, EdgeLabelEnum.VERSION.name());
if (edges != null && edges.hasNext()) {
TitanOperationStatus status = updatePreviousVersion(metadataVertex, edges);
if ( status != TitanOperationStatus.OK ){
return status;
}
}
toscaElementOperation.deleteToscaElement(metadataVertex)
.left()
.map(l -> {
ConsoleWriter.dataLine("\nDeleted");
report(metadataVertex);
return TitanOperationStatus.OK;
})
.right()
.map(r-> {
ConsoleWriter.dataLine("\nFailed to delete. see log file");
return r;
});
return TitanOperationStatus.OK;
}
private TitanOperationStatus updatePreviousVersion(GraphVertex metadataVertex, Iterator<Edge> edges) {
Edge edge = edges.next();
TitanVertex prevVersionVertex = (TitanVertex) edge.outVertex();
// check if previous version is deleted
Boolean isDeleted = (Boolean) titanDao.getProperty(prevVersionVertex, GraphPropertyEnum.IS_DELETED.getProperty());
if (isDeleted != null && isDeleted) {
ConsoleWriter.dataLine("\nPrevoius version is marked as deleted. Component cannot be deleted");
return TitanOperationStatus.GENERAL_ERROR;
}
// update highest property for previous version
TitanOperationStatus status = updateStateOfPreviuosVersion(prevVersionVertex);
if ( TitanOperationStatus.OK != status ){
return status;
}
// connect to catalog or archive
return connectToCatalogAndArchive(metadataVertex, prevVersionVertex);
}
private TitanOperationStatus updateStateOfPreviuosVersion(TitanVertex prevVersionVertex) {
String prevId = (String) titanDao.getProperty(prevVersionVertex, GraphPropertyEnum.UNIQUE_ID.getProperty());
Either<GraphVertex, TitanOperationStatus> prevGraphVertex = titanDao.getVertexById(prevId);
GraphVertex prevVertex = prevGraphVertex.left().value();
prevVertex.addMetadataProperty(GraphPropertyEnum.IS_HIGHEST_VERSION, true);
titanDao.updateVertex(prevVertex);
Iterator<Edge> edgesIter = prevVersionVertex.edges(Direction.IN, EdgeLabelEnum.LAST_STATE.name());
if ( edgesIter.hasNext() ) {
Edge lastStateEdge = edgesIter.next();
Vertex lastModifier = lastStateEdge.outVertex();
TitanOperationStatus replaceRes = titanDao.replaceEdgeLabel(lastModifier, prevVersionVertex, lastStateEdge, EdgeLabelEnum.LAST_STATE, EdgeLabelEnum.STATE);
if (replaceRes != TitanOperationStatus.OK) {
log.info("Failed to replace label from {} to {}. status = {}", EdgeLabelEnum.LAST_STATE, EdgeLabelEnum.STATE, replaceRes);
ConsoleWriter.dataLine("\nFailed to replace LAST_STATE edge . Failed to delete");
return TitanOperationStatus.GENERAL_ERROR;
}
}
return TitanOperationStatus.OK;
}
private TitanOperationStatus connectToCatalogAndArchive(GraphVertex metadataVertex, TitanVertex prevVersionVertex) {
TitanOperationStatus status = connectByLabel(metadataVertex, prevVersionVertex, EdgeLabelEnum.CATALOG_ELEMENT, VertexTypeEnum.CATALOG_ROOT);
if ( status == TitanOperationStatus.OK ){
status = connectByLabel(metadataVertex, prevVersionVertex, EdgeLabelEnum.ARCHIVE_ELEMENT, VertexTypeEnum.ARCHIVE_ROOT);
}
return status;
}
private TitanOperationStatus connectByLabel(GraphVertex metadataVertex, TitanVertex prevVersionVertex, EdgeLabelEnum edgeLabel, VertexTypeEnum vertexlabel) {
Iterator<Edge> edgesToCatalog = metadataVertex.getVertex().edges(Direction.IN, edgeLabel.name());
if ( edgesToCatalog != null && edgesToCatalog.hasNext() ){
//exist edge move to prev version
Either<GraphVertex, TitanOperationStatus> catalog = titanDao.getVertexByLabel(vertexlabel);
if (catalog.isRight()) {
log.debug("Failed to fetch {} vertex, error {}", vertexlabel, catalog.right().value());
return catalog.right().value();
}
GraphVertex catalogV = catalog.left().value();
Edge edge = edgesToCatalog.next();
return titanDao.createEdge(catalogV.getVertex(), prevVersionVertex, edgeLabel, edge );
}
return TitanOperationStatus.OK;
}
private boolean isReferenceExist(GraphVertex metadataVertex) {
return existEdgeByLabel(metadataVertex, EdgeLabelEnum.INSTANCE_OF) || existEdgeByLabel(metadataVertex, EdgeLabelEnum.PROXY_OF) || existEdgeByLabel(metadataVertex, EdgeLabelEnum.ALLOTTED_OF);
}
private boolean existEdgeByLabel(GraphVertex metadataVertex, EdgeLabelEnum label) {
Iterator<Edge> edges = metadataVertex.getVertex().edges(Direction.IN, label.name());
return (edges != null && edges.hasNext());
}
private ToscaElementOperation getOperationByLabel(GraphVertex metadataVertex) {
VertexTypeEnum label = metadataVertex.getLabel();
if (label == VertexTypeEnum.NODE_TYPE) {
return nodeTypeOperation;
} else {
return topologyTemplateOperation;
}
}
private void report(GraphVertex metadataVertex) {
try {
getReportWriter().report(metadataVertex.getMetadataProperties());
} catch (IOException e) {
ConsoleWriter.dataLine("\nFailed to created report file.");
}
}
}
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