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/*******************************************************************************
* Copyright (c) 2017 Politecnico di Torino and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Apache License, Version 2.0
* which accompanies this distribution, and is available at
* http://www.apache.org/licenses/LICENSE-2.0
*******************************************************************************/
package it.polito.grpc;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import io.grpc.Server;
import io.grpc.ServerBuilder;
import io.grpc.stub.StreamObserver;
import io.grpc.verigraph.ConfigurationGrpc;
import io.grpc.verigraph.GetRequest;
import io.grpc.verigraph.GraphGrpc;
import io.grpc.verigraph.NeighbourGrpc;
import io.grpc.verigraph.NewGraph;
import io.grpc.verigraph.NewNeighbour;
import io.grpc.verigraph.NewNode;
import io.grpc.verigraph.NodeGrpc;
import io.grpc.verigraph.Policy;
import io.grpc.verigraph.RequestID;
import io.grpc.verigraph.Status;
import io.grpc.verigraph.VerificationGrpc;
import io.grpc.verigraph.VerigraphGrpc;
import it.polito.escape.verify.exception.BadRequestException;
import it.polito.escape.verify.exception.DataNotFoundException;
import it.polito.escape.verify.exception.ForbiddenException;
import it.polito.escape.verify.model.Configuration;
import it.polito.escape.verify.model.Graph;
import it.polito.escape.verify.model.Neighbour;
import it.polito.escape.verify.model.Node;
import it.polito.escape.verify.model.Verification;
import it.polito.escape.verify.resources.beans.VerificationBean;
import it.polito.escape.verify.service.GraphService;
import it.polito.escape.verify.service.NeighbourService;
import it.polito.escape.verify.service.NodeService;
import it.polito.escape.verify.service.VerificationService;
public class Service {
/** Port on which the server should run. */
private static final Logger logger = Logger.getLogger(Service.class.getName());
private static final int port = 50051;
private static final String internalError = "Internal Server Error";
private Server server;
private GraphService graphService = new GraphService();
private VerificationService verificationService = new VerificationService();
private NodeService nodeService = new NodeService();
private NeighbourService neighboursService = new NeighbourService();
public Service(int port) {
this(ServerBuilder.forPort(port), port);
}
/** Create a RouteGuide server using serverBuilder as a base and features as data. */
public Service(ServerBuilder<?> serverBuilder, int port) {
server = serverBuilder.addService(new VerigraphImpl())
.build();
}
public void start() throws IOException {
server.start();
logger.info("Server started, listening on "+ port);
Runtime.getRuntime().addShutdownHook(new Thread() {
@Override
public void run() {
logger.info("*** Shutting down gRPC server since JVM is shutting down");
Service.this.stop();
logger.info("*** Server shut down");
}
});
}
public void stop() {
if (server != null) {
server.shutdown();
}
}
private void blockUntilShutdown() throws InterruptedException {
if (server != null) {
server.awaitTermination();
}
}
/** Main function to launch server from cmd. */
public static void main(String[] args) throws IOException, InterruptedException {
try{
Service server = new Service(port);
server.start();
server.blockUntilShutdown();
}
catch(Exception ex){
logger.log(Level.WARNING, ex.getMessage());
}
}
/**Here start method of my impementation*/
private class VerigraphImpl extends VerigraphGrpc.VerigraphImplBase{
/** Here start methods of GraphResource*/
@Override
public void getGraphs(GetRequest request, StreamObserver<GraphGrpc> responseObserver) {
try{
for(Graph item : graphService.getAllGraphs()) {
GraphGrpc gr = GrpcUtils.obtainGraph(item);
responseObserver.onNext(gr);
}
}catch(Exception ex){
GraphGrpc nr = GraphGrpc.newBuilder().setErrorMessage(internalError).build();
responseObserver.onNext(nr);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onCompleted();
}
@Override
public void createGraph(GraphGrpc request, StreamObserver<NewGraph> responseObserver) {
NewGraph.Builder response = NewGraph.newBuilder();
try{
Graph graph = GrpcUtils.deriveGraph(request);
Graph newGraph = graphService.addGraph(graph);
response.setSuccess(true).setGraph(GrpcUtils.obtainGraph(newGraph));
}catch(BadRequestException ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}
catch(Exception ex){
response.setSuccess(false).setErrorMessage(internalError);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(response.build());
responseObserver.onCompleted();
}
@Override
public void deleteGraph(RequestID request, StreamObserver<Status> responseObserver) {
Status.Builder response = Status.newBuilder();
try{
graphService.removeGraph(request.getIdGraph());
response.setSuccess(true);
}catch(ForbiddenException ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
} catch(Exception ex){
response.setSuccess(false).setErrorMessage(internalError);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(response.build());
responseObserver.onCompleted();
}
@Override
public void getGraph(RequestID request, StreamObserver<GraphGrpc> responseObserver) {
try{
Graph graph = graphService.getGraph(request.getIdGraph());
GraphGrpc gr = GrpcUtils.obtainGraph(graph);
responseObserver.onNext(gr);
}catch(ForbiddenException | DataNotFoundException ex){
GraphGrpc grError = GraphGrpc.newBuilder().setErrorMessage(ex.getMessage()).build();
responseObserver.onNext(grError);
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
GraphGrpc grError = GraphGrpc.newBuilder().setErrorMessage(internalError).build();
responseObserver.onNext(grError);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onCompleted();
}
@Override
public void updateGraph(GraphGrpc request, StreamObserver<NewGraph> responseObserver) {
NewGraph.Builder response = NewGraph.newBuilder();
try{
Graph graph = GrpcUtils.deriveGraph(request);
graph.setId(request.getId());
Graph newGraph = graphService.updateGraph(graph);
response.setSuccess(true).setGraph(GrpcUtils.obtainGraph(newGraph));
}catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
response.setSuccess(false).setErrorMessage(internalError);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(response.build());
responseObserver.onCompleted();
}
@Override
public void verifyPolicy(Policy request, StreamObserver<VerificationGrpc> responseObserver) {
VerificationGrpc.Builder verification;
try{
//Convert request
VerificationBean verify = new VerificationBean();
verify.setDestination(request.getDestination());
verify.setSource(request.getSource());
verify.setType(request.getType().toString());
verify.setMiddlebox(request.getMiddlebox());
//Convert Response
Verification ver = verificationService.verify(request.getIdGraph(), verify);
verification = VerificationGrpc.newBuilder(GrpcUtils.obtainVerification(ver))
.setSuccessOfOperation(true);
}catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
verification = VerificationGrpc.newBuilder().setSuccessOfOperation(false)
.setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
} catch(Exception ex){
verification = VerificationGrpc.newBuilder().setSuccessOfOperation(false)
.setErrorMessage(internalError);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(verification.build());
responseObserver.onCompleted();
}
/** Here start methods of NodeResource*/
@Override
public void getNodes(RequestID request, StreamObserver<NodeGrpc> responseObserver) {
try{
for (Node item : nodeService.getAllNodes(request.getIdGraph())) {
NodeGrpc nr = GrpcUtils.obtainNode(item);
responseObserver.onNext(nr);
}
}catch(ForbiddenException | DataNotFoundException ex){
NodeGrpc nr = NodeGrpc.newBuilder().setErrorMessage(ex.getMessage()).build();
responseObserver.onNext(nr);
logger.log(Level.WARNING, ex.getMessage());
} catch(Exception ex){
NodeGrpc nr = NodeGrpc.newBuilder().setErrorMessage(internalError).build();
responseObserver.onNext(nr);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onCompleted();
}
@Override
public void createNode(NodeGrpc request, StreamObserver<NewNode> responseObserver) {
NewNode.Builder response = NewNode.newBuilder();
try{
Node node = GrpcUtils.deriveNode(request);
Node newNode = nodeService.addNode(request.getIdGraph(), node);
response.setSuccess(true).setNode(GrpcUtils.obtainNode(newNode));
}catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
response.setSuccess(false).setErrorMessage(internalError);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(response.build());
responseObserver.onCompleted();
}
@Override
public void deleteNode(RequestID request, StreamObserver<Status> responseObserver) {
Status.Builder response = Status.newBuilder();
try{
nodeService.removeNode(request.getIdGraph(), request.getIdNode());
response.setSuccess(true);
}catch(ForbiddenException | DataNotFoundException ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
response.setSuccess(false).setErrorMessage(internalError);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(response.build());
responseObserver.onCompleted();
}
@Override
public void getNode(RequestID request, StreamObserver<NodeGrpc> responseObserver) {
NodeGrpc nr;
try{
Node node = nodeService.getNode(request.getIdGraph(), request.getIdNode());
nr= GrpcUtils.obtainNode(node);
}catch(ForbiddenException | DataNotFoundException ex){
nr = NodeGrpc.newBuilder().setErrorMessage(ex.getMessage()).build();
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
nr = NodeGrpc.newBuilder().setErrorMessage(internalError).build();
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(nr);
responseObserver.onCompleted();
}
@Override
public void updateNode(NodeGrpc request, StreamObserver<NewNode> responseObserver) {
NewNode.Builder response = NewNode.newBuilder();
try{
Node node = GrpcUtils.deriveNode(request);
node.setId(request.getId());
Node newNode = nodeService.updateNode(request.getIdGraph(), node);
response.setSuccess(true).setNode(GrpcUtils.obtainNode(newNode));
}catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
response.setSuccess(false).setErrorMessage(internalError);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(response.build());
responseObserver.onCompleted();
}
@Override
public void configureNode(ConfigurationGrpc request, StreamObserver<Status> responseObserver) {
Status.Builder response = Status.newBuilder();
try{
if (request.getIdGraph() <= 0) {
throw new ForbiddenException("Illegal graph id: " + request.getIdGraph());
}
if (request.getIdNode() <= 0) {
throw new ForbiddenException("Illegal node id: " + request.getIdNode());
}
Graph graph = new GraphService().getGraph(request.getIdGraph());
if (graph == null){
throw new BadRequestException("Graph with id " + request.getIdGraph() + " not found");
}
Node node = nodeService.getNode(request.getIdGraph(), request.getIdNode());
if (node == null){
throw new BadRequestException("Node with id " + request.getIdNode() + " not found in graph with id " + request.getIdGraph());
}
Configuration nodeConfiguration = GrpcUtils.deriveConfiguration(request);
Node nodeCopy = new Node();
nodeCopy.setId(node.getId());
nodeCopy.setName(node.getName());
nodeCopy.setFunctional_type(node.getFunctional_type());
Map<Long,Neighbour> nodes = new HashMap<Long,Neighbour>();
nodes.putAll(node.getNeighbours());
nodeCopy.setNeighbours(nodes);
nodeConfiguration.setId(nodeCopy.getName());
nodeCopy.setConfiguration(nodeConfiguration);
Graph graphCopy = new Graph();
graphCopy.setId(graph.getId());
graphCopy.setNodes(new HashMap<Long, Node>(graph.getNodes()));
graphCopy.getNodes().remove(node.getId());
NodeService.validateNode(graphCopy, nodeCopy);
graph.getNodes().put(request.getIdNode(), nodeCopy);
response.setSuccess(true);
}catch(ForbiddenException | BadRequestException ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
response.setSuccess(false).setErrorMessage(internalError);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(response.build());
responseObserver.onCompleted();
}
/** Here start methods of NeighbourResource*/
@Override
public void getNeighbours(RequestID request, StreamObserver<NeighbourGrpc> responseObserver) {
try{
for(Neighbour item : neighboursService.getAllNeighbours(request.getIdGraph(), request.getIdNode())) {
NeighbourGrpc nr = GrpcUtils.obtainNeighbour(item);
responseObserver.onNext(nr);
}
}catch(ForbiddenException | DataNotFoundException ex){
NeighbourGrpc nr = NeighbourGrpc.newBuilder().setErrorMessage(ex.getMessage()).build();
responseObserver.onNext(nr);
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
NeighbourGrpc nr = NeighbourGrpc.newBuilder().setErrorMessage(internalError).build();
responseObserver.onNext(nr);
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onCompleted();
}
@Override
public void createNeighbour(NeighbourGrpc request, StreamObserver<NewNeighbour> responseObserver) {
NewNeighbour.Builder response = NewNeighbour.newBuilder();
try{
Neighbour neighbour = GrpcUtils.deriveNeighbour(request);
Neighbour newNeighbour = neighboursService.addNeighbour(request.getIdGraph(), request.getIdNode(), neighbour);
response.setSuccess(true).setNeighbour(GrpcUtils.obtainNeighbour(newNeighbour));
}catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(response.build());
responseObserver.onCompleted();
}
@Override
public void deleteNeighbour(RequestID request, StreamObserver<Status> responseObserver) {
Status.Builder response = Status.newBuilder();
try{
neighboursService.removeNeighbour(request.getIdGraph(), request.getIdNode(), request.getIdNeighbour());
response.setSuccess(true);
}catch(ForbiddenException | DataNotFoundException ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(response.build());
responseObserver.onCompleted();
}
@Override
public void getNeighbour(RequestID request, StreamObserver<NeighbourGrpc> responseObserver) {
NeighbourGrpc nr;
try{
Neighbour neighbour = neighboursService.getNeighbour(request.getIdGraph(),
request.getIdNode(), request.getIdNeighbour());
nr = GrpcUtils.obtainNeighbour(neighbour);
}catch(ForbiddenException | DataNotFoundException ex){
nr = NeighbourGrpc.newBuilder().setErrorMessage(ex.getMessage()).build();
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
nr = NeighbourGrpc.newBuilder().setErrorMessage(internalError).build();
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(nr);
responseObserver.onCompleted();
}
@Override
public void updateNeighbour(NeighbourGrpc request, StreamObserver<NewNeighbour> responseObserver) {
NewNeighbour.Builder response = NewNeighbour.newBuilder();
try{
Neighbour neighbour = GrpcUtils.deriveNeighbour(request);
neighbour.setId(request.getId());
Neighbour newNeighbour = neighboursService.updateNeighbour(request.getIdGraph(), request.getIdNode(), neighbour);
response.setSuccess(true).setNeighbour(GrpcUtils.obtainNeighbour(newNeighbour));
}catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}catch(Exception ex){
response.setSuccess(false).setErrorMessage(ex.getMessage());
logger.log(Level.WARNING, ex.getMessage());
}
responseObserver.onNext(response.build());
responseObserver.onCompleted();
}
}
}
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