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 com.google.common.base.Preconditions;
13 import io.netty.buffer.ByteBuf;
14 import io.netty.buffer.Unpooled;
15 import java.util.ArrayList;
16 import java.util.List;
17 import java.util.Optional;
18 import java.util.Queue;
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.PCEPDeserializerException;
23 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
24 import org.opendaylight.protocol.pcep.spi.UnknownObject;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.message.rev181109.PcerrBuilder;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Message;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Object;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.PcerrMessage;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.open.object.Open;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcep.error.object.ErrorObject;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.PcerrMessageBuilder;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.Errors;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.ErrorsBuilder;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.RequestCase;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.RequestCaseBuilder;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.SessionCase;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.SessionCaseBuilder;
38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.request._case.RequestBuilder;
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.Rps;
40 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;
41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.session._case.SessionBuilder;
42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.rp.object.Rp;
45 * Parser for {@link PcerrMessage}.
47 public class PCEPErrorMessageParser extends AbstractMessageParser {
49 public static final int TYPE = 6;
51 public PCEPErrorMessageParser(final ObjectRegistry registry) {
56 public void serializeMessage(final Message message, final ByteBuf out) {
57 Preconditions.checkArgument(message instanceof PcerrMessage,
58 "Wrong instance of Message. Passed instance of %s. Need PcerrMessage.", message.getClass());
59 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message
60 .PcerrMessage err = ((PcerrMessage) message).getPcerrMessage();
61 Preconditions.checkArgument(err.getErrors() != null && !err.nonnullErrors().isEmpty(),
62 "Errors should not be empty.");
63 final ByteBuf buffer = Unpooled.buffer();
64 serializeCases(err, buffer);
65 for (final Errors e : err.nonnullErrors()) {
66 serializeObject(e.getErrorObject(), buffer);
69 if (err.getErrorType() instanceof SessionCase) {
70 serializeObject(((SessionCase) err.getErrorType()).getSession().getOpen(), buffer);
72 MessageUtil.formatMessage(TYPE, buffer, out);
76 * If needed, subclasses can override this method.
78 protected void serializeCases(
79 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message
80 .PcerrMessage err, final ByteBuf buffer) {
81 if (err.getErrorType() instanceof RequestCase) {
82 for (final Rps r : ((RequestCase) err.getErrorType()).getRequest().nonnullRps()) {
83 serializeObject(r.getRp(), buffer);
89 protected PcerrMessage validate(final Queue<Object> objects, final List<Message> errors)
90 throws PCEPDeserializerException {
91 checkArgument(objects != null, "Passed list can't be null.");
93 final List<Rps> requestParameters = new ArrayList<>();
94 final List<Errors> errorObjects = new ArrayList<>();
96 final State initialState;
97 final Object first = objects.poll();
98 if (first instanceof ErrorObject) {
99 errorObjects.add(new ErrorsBuilder().setErrorObject((ErrorObject) first).build());
100 initialState = State.ERROR_IN;
101 } else if (first instanceof Rp) {
102 final Rp rp = (Rp) first;
103 if (rp.getProcessingRule()) {
104 errors.add(createErrorMsg(PCEPErrors.P_FLAG_NOT_SET, Optional.empty()));
107 requestParameters.add(new RpsBuilder().setRp(rp).build());
108 initialState = State.RP_IN;
109 } else if (first == null) {
110 throw new PCEPDeserializerException("Error message is empty.");
112 throw new PCEPDeserializerException("At least one PCEPErrorObject is mandatory.");
115 final PcerrMessageBuilder msgBuilder = new PcerrMessageBuilder();
116 State state = initialState;
117 for (Object obj = objects.peek(); obj != null; obj = objects.peek()) {
118 if (obj instanceof UnknownObject) {
119 return new PcerrBuilder()
120 .setPcerrMessage(msgBuilder.setErrors(((UnknownObject) obj).getErrors()).build())
124 state = insertObject(state, errorObjects, obj, requestParameters, msgBuilder);
125 if (state == State.END) {
132 if (errorObjects.isEmpty()) {
133 throw new PCEPDeserializerException("At least one PCEPErrorObject is mandatory.");
135 if (!objects.isEmpty()) {
136 throw new PCEPDeserializerException("Unprocessed Objects: " + objects);
138 if (!requestParameters.isEmpty()) {
139 msgBuilder.setErrorType(new RequestCaseBuilder()
140 .setRequest(new RequestBuilder().setRps(requestParameters).build()).build());
142 return new PcerrBuilder().setPcerrMessage(msgBuilder.setErrors(errorObjects).build()).build();
145 private static State insertObject(final State state, final List<Errors> errorObjects, final Object obj,
146 final List<Rps> requestParameters, final PcerrMessageBuilder msgBuilder) {
149 if (obj instanceof Rp) {
150 final Rp o = (Rp) obj;
151 requestParameters.add(new RpsBuilder().setRp(o).build());
156 if (obj instanceof ErrorObject) {
157 final ErrorObject o = (ErrorObject) obj;
158 errorObjects.add(new ErrorsBuilder().setErrorObject(o).build());
159 return State.ERROR_IN;
163 if (obj instanceof Open) {
164 msgBuilder.setErrorType(
165 new SessionCaseBuilder().setSession(new SessionBuilder().setOpen((Open) obj).build()).build());
166 return State.OPEN_IN;
170 if (obj instanceof ErrorObject) {
171 final ErrorObject o = (ErrorObject) obj;
172 errorObjects.add(new ErrorsBuilder().setErrorObject(o).build());
185 INIT, ERROR_IN, RP_IN, OPEN, ERROR, OPEN_IN, END