2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.protocol.pcep.parser.message;
10 import static com.google.common.base.Preconditions.checkArgument;
12 import io.netty.buffer.ByteBuf;
13 import io.netty.buffer.Unpooled;
14 import java.util.ArrayList;
15 import java.util.List;
16 import java.util.Optional;
17 import java.util.Queue;
18 import org.opendaylight.protocol.pcep.PCEPDeserializerException;
19 import org.opendaylight.protocol.pcep.spi.AbstractMessageParser;
20 import org.opendaylight.protocol.pcep.spi.MessageUtil;
21 import org.opendaylight.protocol.pcep.spi.ObjectRegistry;
22 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
23 import org.opendaylight.protocol.pcep.spi.UnknownObject;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.message.rev181109.PcerrBuilder;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Message;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Object;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.PcerrMessage;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.open.object.Open;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcep.error.object.ErrorObject;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.PcerrMessageBuilder;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.Errors;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.ErrorsBuilder;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.RequestCase;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.RequestCaseBuilder;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.SessionCase;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.SessionCaseBuilder;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.request._case.RequestBuilder;
38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.request._case.request.Rps;
39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.request._case.request.RpsBuilder;
40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.session._case.SessionBuilder;
41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.rp.object.Rp;
44 * Parser for {@link PcerrMessage}.
46 public class PCEPErrorMessageParser extends AbstractMessageParser {
48 public static final int TYPE = 6;
50 public PCEPErrorMessageParser(final ObjectRegistry registry) {
55 public void serializeMessage(final Message message, final ByteBuf out) {
56 checkArgument(message instanceof PcerrMessage,
57 "Wrong instance of Message. Passed instance of %s. Need PcerrMessage.", message.getClass());
58 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message
59 .PcerrMessage err = ((PcerrMessage) message).getPcerrMessage();
60 checkArgument(err.getErrors() != null && !err.nonnullErrors().isEmpty(),
61 "Errors should not be empty.");
62 final ByteBuf buffer = Unpooled.buffer();
63 serializeCases(err, buffer);
64 for (final Errors e : err.nonnullErrors()) {
65 serializeObject(e.getErrorObject(), buffer);
68 if (err.getErrorType() instanceof SessionCase) {
69 serializeObject(((SessionCase) err.getErrorType()).getSession().getOpen(), buffer);
71 MessageUtil.formatMessage(TYPE, buffer, out);
75 * If needed, subclasses can override this method.
77 protected void serializeCases(
78 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message
79 .PcerrMessage err, final ByteBuf buffer) {
80 if (err.getErrorType() instanceof RequestCase) {
81 for (final Rps r : ((RequestCase) err.getErrorType()).getRequest().nonnullRps()) {
82 serializeObject(r.getRp(), buffer);
88 protected PcerrMessage validate(final Queue<Object> objects, final List<Message> errors)
89 throws PCEPDeserializerException {
90 checkArgument(objects != null, "Passed list can't be null.");
92 final List<Rps> requestParameters = new ArrayList<>();
93 final List<Errors> errorObjects = new ArrayList<>();
95 final State initialState;
96 final Object first = objects.poll();
97 if (first instanceof ErrorObject) {
98 errorObjects.add(new ErrorsBuilder().setErrorObject((ErrorObject) first).build());
99 initialState = State.ERROR_IN;
100 } else if (first instanceof Rp rp) {
101 if (rp.getProcessingRule()) {
102 errors.add(createErrorMsg(PCEPErrors.P_FLAG_NOT_SET, Optional.empty()));
105 requestParameters.add(new RpsBuilder().setRp(rp).build());
106 initialState = State.RP_IN;
107 } else if (first == null) {
108 throw new PCEPDeserializerException("Error message is empty.");
110 throw new PCEPDeserializerException("At least one PCEPErrorObject is mandatory.");
113 final PcerrMessageBuilder msgBuilder = new PcerrMessageBuilder();
114 State state = initialState;
115 for (Object obj = objects.peek(); obj != null; obj = objects.peek()) {
116 if (obj instanceof UnknownObject) {
117 return new PcerrBuilder()
118 .setPcerrMessage(msgBuilder.setErrors(((UnknownObject) obj).getErrors()).build())
122 state = insertObject(state, errorObjects, obj, requestParameters, msgBuilder);
123 if (state == State.END) {
130 if (errorObjects.isEmpty()) {
131 throw new PCEPDeserializerException("At least one PCEPErrorObject is mandatory.");
133 if (!objects.isEmpty()) {
134 throw new PCEPDeserializerException("Unprocessed Objects: " + objects);
136 if (!requestParameters.isEmpty()) {
137 msgBuilder.setErrorType(new RequestCaseBuilder()
138 .setRequest(new RequestBuilder().setRps(requestParameters).build()).build());
140 return new PcerrBuilder().setPcerrMessage(msgBuilder.setErrors(errorObjects).build()).build();
143 private static State insertObject(final State state, final List<Errors> errorObjects, final Object obj,
144 final List<Rps> requestParameters, final PcerrMessageBuilder msgBuilder) {
147 if (obj instanceof Rp o) {
148 requestParameters.add(new RpsBuilder().setRp(o).build());
153 if (obj instanceof ErrorObject o) {
154 errorObjects.add(new ErrorsBuilder().setErrorObject(o).build());
155 return State.ERROR_IN;
159 if (obj instanceof Open) {
160 msgBuilder.setErrorType(
161 new SessionCaseBuilder().setSession(new SessionBuilder().setOpen((Open) obj).build()).build());
162 return State.OPEN_IN;
166 if (obj instanceof ErrorObject o) {
167 errorObjects.add(new ErrorsBuilder().setErrorObject(o).build());
180 INIT, ERROR_IN, RP_IN, OPEN, ERROR, OPEN_IN, END