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.impl.message;
10 import com.google.common.base.Optional;
11 import com.google.common.base.Preconditions;
12 import io.netty.buffer.ByteBuf;
13 import io.netty.buffer.Unpooled;
14 import java.util.ArrayList;
15 import java.util.List;
16 import org.opendaylight.protocol.pcep.impl.spi.Util;
17 import org.opendaylight.protocol.pcep.spi.AbstractMessageParser;
18 import org.opendaylight.protocol.pcep.spi.MessageUtil;
19 import org.opendaylight.protocol.pcep.spi.ObjectRegistry;
20 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
21 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
22 import org.opendaylight.protocol.pcep.spi.VendorInformationObjectRegistry;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.message.rev131007.Pcrep;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.message.rev131007.PcrepBuilder;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Message;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.bandwidth.object.Bandwidth;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.Ero;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.include.route.object.Iro;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.Metrics;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.MetricsBuilder;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lspa.object.Lspa;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.metric.object.Metric;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.monitoring.metrics.MetricPce;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.monitoring.object.Monitoring;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.of.object.Of;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcc.id.req.object.PccIdReq;
38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pce.id.object.PceId;
39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.PcrepMessageBuilder;
40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.Replies;
41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.RepliesBuilder;
42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.replies.Result;
43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.replies.result.FailureCase;
44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.replies.result.FailureCaseBuilder;
45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.replies.result.SuccessCase;
46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.replies.result.SuccessCaseBuilder;
47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.replies.result.failure._case.NoPath;
48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.replies.result.success._case.SuccessBuilder;
49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.replies.result.success._case.success.Paths;
50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.pcrep.message.replies.result.success._case.success.PathsBuilder;
51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.Rp;
52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.vendor.information.objects.VendorInformationObject;
55 * Parser for {@link Pcrep}
57 public class PCEPReplyMessageParser extends AbstractMessageParser {
59 public static final int TYPE = 4;
61 public PCEPReplyMessageParser(final ObjectRegistry registry, final VendorInformationObjectRegistry viRegistry) {
62 super(registry, viRegistry);
66 public void serializeMessage(final Message message, final ByteBuf out) {
67 Preconditions.checkArgument(message instanceof Pcrep, "Wrong instance of Message. Passed instance of %s. Need Pcrep.", message.getClass());
68 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrep.message.PcrepMessage repMsg = ((Pcrep) message).getPcrepMessage();
69 Preconditions.checkArgument(repMsg.getReplies() != null && !repMsg.getReplies().isEmpty(), "Replies cannot be null or empty.");
70 final ByteBuf buffer = Unpooled.buffer();
71 for (final Replies reply : repMsg.getReplies()) {
72 Preconditions.checkArgument(reply.getRp() != null, "Reply must contain RP object.");
73 serializeReply(reply, buffer);
75 MessageUtil.formatMessage(TYPE, buffer, out);
78 protected void serializeReply(final Replies reply, final ByteBuf buffer) {
79 serializeObject(reply.getRp(), buffer);
80 serializeMonitoring(reply, buffer);
81 serializeVendorInformationObjects(reply.getVendorInformationObject(), buffer);
82 if (reply.getResult() == null) {
85 if (reply.getResult() instanceof FailureCase) {
86 final FailureCase f = ((FailureCase) reply.getResult());
87 serializeFailure(f, buffer);
90 final SuccessCase s = (SuccessCase) reply.getResult();
91 serializeSuccess(s, buffer);
92 serializeMonitoringMetrics(reply, buffer);
95 private void serializeFailure(final FailureCase f, final ByteBuf buffer) {
99 serializeObject(f.getNoPath(), buffer);
100 serializeObject(f.getLspa(), buffer);
101 serializeObject(f.getBandwidth(), buffer);
102 if (f.getMetrics() != null) {
103 for (final Metrics m : f.getMetrics()) {
104 serializeObject(m.getMetric(), buffer);
107 serializeObject(f.getIro(), buffer);
110 private void serializeSuccess(final SuccessCase s, final ByteBuf buffer) {
111 if (s == null || s.getSuccess() == null) {
114 for (final Paths p : s.getSuccess().getPaths()) {
115 serializeObject(p.getEro(), buffer);
116 serializeObject(p.getLspa(), buffer);
117 serializeObject(p.getOf(), buffer);
118 serializeObject(p.getBandwidth(), buffer);
119 if (p.getMetrics() != null) {
120 for (final Metrics m : p.getMetrics()) {
121 serializeObject(m.getMetric(), buffer);
124 serializeObject(p.getIro(), buffer);
126 serializeVendorInformationObjects(s.getSuccess().getVendorInformationObject(), buffer);
129 private void serializeMonitoring(final Replies reply, final ByteBuf buffer) {
130 serializeObject(reply.getMonitoring(), buffer);
131 serializeObject(reply.getPccIdReq(), buffer);
134 private void serializeMonitoringMetrics(final Replies reply, final ByteBuf buffer) {
135 if (reply.getMetricPce() != null) {
136 for (final MetricPce metricPce : reply.getMetricPce()) {
137 serializeMetricPce(metricPce, buffer);
142 protected void serializeMetricPce(final MetricPce metricPce, final ByteBuf buffer) {
143 Preconditions.checkArgument(metricPce.getPceId() != null, "PCE-ID must be present.");
144 serializeObject(metricPce.getPceId(), buffer);
145 serializeObject(metricPce.getProcTime(), buffer);
146 serializeObject(metricPce.getOverload(), buffer);
150 protected Pcrep validate(final List<Object> objects, final List<Message> errors) throws PCEPDeserializerException {
151 Preconditions.checkArgument(objects != null, "Passed list can't be null.");
152 if (objects.isEmpty()) {
153 throw new PCEPDeserializerException("Pcrep message cannot be empty.");
155 final List<Replies> replies = new ArrayList<>();
156 while (!objects.isEmpty()) {
157 final Replies r = this.getValidReply(objects, errors);
162 if (!objects.isEmpty()) {
163 throw new PCEPDeserializerException("Unprocessed Objects: " + objects);
165 return new PcrepBuilder().setPcrepMessage(new PcrepMessageBuilder().setReplies(replies).build()).build();
168 protected Replies getValidReply(final List<Object> objects, final List<Message> errors) throws PCEPDeserializerException {
169 if (!(objects.get(0) instanceof Rp)) {
170 errors.add(createErrorMsg(PCEPErrors.RP_MISSING, Optional.<Rp>absent()));
173 final Rp rp = (Rp) objects.get(0);
175 final RepliesBuilder repliesBuilder = new RepliesBuilder();
176 if (!objects.isEmpty() && objects.get(0) instanceof Monitoring) {
177 repliesBuilder.setMonitoring((Monitoring) objects.get(0));
180 if (!objects.isEmpty() && objects.get(0) instanceof PccIdReq) {
181 repliesBuilder.setPccIdReq((PccIdReq) objects.get(0));
184 final List<VendorInformationObject> vendorInfo = addVendorInformationObjects(objects);
186 if (!objects.isEmpty()) {
187 if (objects.get(0) instanceof NoPath) {
188 res = handleNoPath((NoPath) objects.get(0), objects);
189 } else if (objects.get(0) instanceof Ero) {
190 res = handleEro((Ero) objects.get(0), objects);
193 final List<MetricPce> metricPceList = new ArrayList<>();
194 if (!objects.isEmpty() && objects.get(0) instanceof PceId) {
195 while (!objects.isEmpty()) {
196 metricPceList.add(Util.validateMonitoringMetrics(objects));
199 if (!vendorInfo.isEmpty()) {
200 repliesBuilder.setVendorInformationObject(vendorInfo);
202 if (!metricPceList.isEmpty()) {
203 repliesBuilder.setMetricPce(metricPceList);
205 return repliesBuilder.setRp(rp).setResult(res).build();
208 private Result handleNoPath(final NoPath noPath, final List<Object> objects) {
210 final FailureCaseBuilder builder = new FailureCaseBuilder();
211 builder.setNoPath(noPath);
212 while (!objects.isEmpty() && !(objects.get(0) instanceof PceId)) {
213 this.parseAttributes(builder, objects);
215 return builder.build();
218 private Result handleEro(final Ero ero, final List<Object> objects) {
220 final SuccessBuilder builder = new SuccessBuilder();
221 final List<Paths> paths = new ArrayList<>();
222 final PathsBuilder pBuilder = new PathsBuilder();
223 pBuilder.setEro(ero);
224 while (!objects.isEmpty() && !(objects.get(0) instanceof PceId)) {
225 final List<VendorInformationObject> vendorInfoObjects = addVendorInformationObjects(objects);
226 if (!vendorInfoObjects.isEmpty()) {
227 builder.setVendorInformationObject(vendorInfoObjects);
229 this.parsePath(pBuilder, objects);
230 paths.add(pBuilder.build());
232 builder.setPaths(paths);
233 return new SuccessCaseBuilder().setSuccess(builder.build()).build();
236 protected void parseAttributes(final FailureCaseBuilder builder, final List<Object> objects) {
237 final List<Metrics> pathMetrics = new ArrayList<>();
240 State state = State.INIT;
241 while (!objects.isEmpty() && !state.equals(State.END)) {
242 obj = objects.get(0);
243 state = insertObject(state, obj, builder, pathMetrics);
244 if (!state.equals(State.END)) {
248 if (!pathMetrics.isEmpty()) {
249 builder.setMetrics(pathMetrics);
253 private State insertObject(final State state, final Object obj, final FailureCaseBuilder builder, final List<Metrics> pathMetrics) {
256 if (obj instanceof Lspa) {
257 builder.setLspa((Lspa) obj);
258 return State.LSPA_IN;
261 if (obj instanceof Bandwidth) {
262 builder.setBandwidth((Bandwidth) obj);
263 return State.BANDWIDTH_IN;
266 if (obj instanceof Metric) {
267 pathMetrics.add(new MetricsBuilder().setMetric((Metric) obj).build());
268 return State.BANDWIDTH_IN;
271 if (obj instanceof Iro) {
272 builder.setIro((Iro) obj);
283 protected void parsePath(final PathsBuilder builder, final List<Object> objects) {
284 final List<Metrics> pathMetrics = new ArrayList<>();
287 State state = State.INIT;
288 while (!objects.isEmpty() && !state.equals(State.END)) {
289 obj = objects.get(0);
290 state = insertObject(state, obj, builder, pathMetrics);
291 if (!state.equals(State.END)) {
295 if (!pathMetrics.isEmpty()) {
296 builder.setMetrics(pathMetrics);
300 private State insertObject(final State state, final Object obj, final PathsBuilder builder, final List<Metrics> pathMetrics) {
303 if (obj instanceof Lspa) {
304 builder.setLspa((Lspa) obj);
305 return State.LSPA_IN;
308 if (obj instanceof Of) {
309 builder.setOf((Of) obj);
313 if (obj instanceof Bandwidth) {
314 builder.setBandwidth((Bandwidth) obj);
315 return State.BANDWIDTH_IN;
318 if (obj instanceof Metric) {
319 pathMetrics.add(new MetricsBuilder().setMetric((Metric) obj).build());
320 return State.BANDWIDTH_IN;
323 if (obj instanceof Iro) {
324 builder.setIro((Iro) obj);
336 INIT, LSPA_IN, OF_IN, BANDWIDTH_IN, METRIC_IN, IRO_IN, END