Assigned bugs to FIXMEs.
[bgpcep.git] / pcep / tunnel-provider / src / main / java / org / opendaylight / bgpcep / pcep / tunnel / provider / TunnelProgramming.java
1 /*
2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
3  *
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
7  */
8 package org.opendaylight.bgpcep.pcep.tunnel.provider;
9
10 import java.util.ArrayList;
11 import java.util.List;
12
13 import org.opendaylight.bgpcep.pcep.topology.spi.AbstractTopologyProgrammingExecutor;
14 import org.opendaylight.bgpcep.programming.spi.InstructionExecutor;
15 import org.opendaylight.bgpcep.programming.spi.InstructionScheduler;
16 import org.opendaylight.bgpcep.programming.spi.SuccessfulRpcResult;
17 import org.opendaylight.controller.sal.binding.api.data.DataModificationTransaction;
18 import org.opendaylight.controller.sal.binding.api.data.DataProviderService;
19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.bandwidth.object.BandwidthBuilder;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.classtype.object.ClassTypeBuilder;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.AddressFamily;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv4Builder;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.address.family.Ipv6Builder;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.EndpointsObjBuilder;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.Ero;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.EroBuilder;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.ero.Subobjects;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.ero.SubobjectsBuilder;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lspa.object.LspaBuilder;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.programming.rev130930.submit.instruction.output.result.FailureBuilder;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.programming.rev130930.submit.instruction.output.result.failure.Failure;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.AddLspInputBuilder;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.AddLspOutput;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.NetworkTopologyPcepService;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.OperationResult;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.RemoveLspInputBuilder;
38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.RemoveLspOutput;
39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspInputBuilder;
40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspOutput;
41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.add.lsp.args.ArgumentsBuilder;
42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.programming.rev131102.TopologyInstructionInput;
43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.p2p.rev130819.tunnel.p2p.path.cfg.attributes.ExplicitHops;
44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepCreateP2pTunnelInput;
45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepCreateP2pTunnelOutput;
46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepCreateP2pTunnelOutputBuilder;
47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepDestroyTunnelInput;
48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepDestroyTunnelOutput;
49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepDestroyTunnelOutputBuilder;
50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepUpdateTunnelInput;
51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepUpdateTunnelOutput;
52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepUpdateTunnelOutputBuilder;
53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.TopologyTunnelPcepProgrammingService;
54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.AdministrativeStatus;
55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.ExplicitHops1;
56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.Link1;
57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.SupportingNode1;
58 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.programming.rev130930.BaseTunnelInput;
59 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.programming.rev130930.TpReference;
60 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
61 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
62 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
63 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
64 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link;
65 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.LinkKey;
66 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
67 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
68 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPoint;
69 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointKey;
70 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.node.attributes.SupportingNode;
71 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.TerminationPoint1;
72 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.termination.point.attributes.igp.termination.point.attributes.TerminationPointType;
73 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.termination.point.attributes.igp.termination.point.attributes.termination.point.type.Ip;
74 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
75 import org.opendaylight.yangtools.yang.common.RpcResult;
76 import org.slf4j.Logger;
77 import org.slf4j.LoggerFactory;
78
79 import com.google.common.base.Function;
80 import com.google.common.base.Preconditions;
81 import com.google.common.util.concurrent.Futures;
82 import com.google.common.util.concurrent.ListenableFuture;
83
84 public final class TunnelProgramming implements TopologyTunnelPcepProgrammingService, AutoCloseable {
85         private static final Logger LOG = LoggerFactory.getLogger(TunnelProgramming.class);
86         private final NetworkTopologyPcepService topologyService;
87         private final DataProviderService dataProvider;
88         private final InstructionScheduler scheduler;
89
90         public TunnelProgramming(final InstructionScheduler scheduler, final DataProviderService dataProvider,
91                         final NetworkTopologyPcepService topologyService) {
92                 this.scheduler = Preconditions.checkNotNull(scheduler);
93                 this.dataProvider = Preconditions.checkNotNull(dataProvider);
94                 this.topologyService = Preconditions.checkNotNull(topologyService);
95         }
96
97         private static final class TpReader {
98                 private final DataModificationTransaction t;
99                 private final InstanceIdentifier<Node> nii;
100                 private final InstanceIdentifier<TerminationPoint> tii;
101
102                 TpReader(final DataModificationTransaction t, final InstanceIdentifier<Topology> topo, final TpReference ref) {
103                         this.t = Preconditions.checkNotNull(t);
104
105                         this.nii = InstanceIdentifier.builder(topo).child(Node.class, new NodeKey(ref.getNode())).toInstance();
106                         this.tii = InstanceIdentifier.builder(this.nii).child(TerminationPoint.class, new TerminationPointKey(ref.getTp())).toInstance();
107                 }
108
109                 private Node getNode() {
110                         return (Node) this.t.readOperationalData(this.nii);
111                 }
112
113                 private TerminationPoint getTp() {
114                         return (TerminationPoint) this.t.readOperationalData(this.tii);
115                 }
116         }
117
118         private AddressFamily buildAddressFamily(final TerminationPoint sp, final TerminationPoint dp) {
119                 // We need the IGP augmentation -- it has IP addresses
120                 final TerminationPoint1 sp1 = Preconditions.checkNotNull(sp.getAugmentation(TerminationPoint1.class));
121                 final TerminationPoint1 dp1 = Preconditions.checkNotNull(dp.getAugmentation(TerminationPoint1.class));
122
123                 // Get the types
124                 final TerminationPointType spt = sp1.getIgpTerminationPointAttributes().getTerminationPointType();
125                 final TerminationPointType dpt = dp1.getIgpTerminationPointAttributes().getTerminationPointType();
126
127                 // The types have to match
128                 Preconditions.checkArgument(spt.getImplementedInterface().equals(dpt.getImplementedInterface()));
129
130                 // And they have to actually be Ip
131                 final Ip sips = (Ip) spt;
132                 final Ip dips = (Ip) dpt;
133
134                 /*
135                  * Now a bit of magic. We need to find 'like' addresses, e.g. both
136                  * IPv4 or both IPv6. We are in IPv6-enabled world now, so let's
137                  * prefer that.
138                  */
139                 AddressFamily ret = findIpv6(sips.getIpAddress(), dips.getIpAddress());
140                 if (ret == null) {
141                         ret = findIpv4(sips.getIpAddress(), dips.getIpAddress());
142                 }
143
144                 // We need to have a ret now
145                 Preconditions.checkArgument(ret != null, "Failed to find like Endpoint addresses");
146
147                 return ret;
148         }
149
150         private AddressFamily findIpv4(final List<IpAddress> srcs, final List<IpAddress> dsts) {
151                 for (final IpAddress sc : srcs) {
152                         if (sc.getIpv4Address() != null) {
153                                 for (final IpAddress dc : dsts) {
154                                         if (dc.getIpv4Address() != null) {
155                                                 return new Ipv4Builder().setSourceIpv4Address(sc.getIpv4Address()).setDestinationIpv4Address(dc.getIpv4Address()).build();
156                                         }
157                                 }
158                         }
159                 }
160
161                 return null;
162         }
163
164         private AddressFamily findIpv6(final List<IpAddress> srcs, final List<IpAddress> dsts) {
165                 for (final IpAddress sc : srcs) {
166                         if (sc.getIpv6Address() != null) {
167                                 for (final IpAddress dc : dsts) {
168                                         if (dc.getIpv6Address() != null) {
169                                                 return new Ipv6Builder().setSourceIpv6Address(sc.getIpv6Address()).setDestinationIpv6Address(dc.getIpv6Address()).build();
170                                         }
171                                 }
172                         }
173                 }
174
175                 return null;
176         }
177
178         private NodeId supportingNode(final DataModificationTransaction t, final Node node) {
179                 for (final SupportingNode n : node.getSupportingNode()) {
180                         final SupportingNode1 n1 = n.getAugmentation(SupportingNode1.class);
181                         if (n1 != null && n1.getPathComputationClient().isControlling()) {
182                                 return n.getKey().getNodeRef();
183                         }
184                 }
185
186                 return null;
187         }
188
189         private Ero buildEro(final List<ExplicitHops> explicitHops) {
190                 final EroBuilder b = new EroBuilder();
191
192                 if (!explicitHops.isEmpty()) {
193                         final List<Subobjects> subobjs = new ArrayList<>(explicitHops.size());
194                         for (final ExplicitHops h : explicitHops) {
195
196                                 final ExplicitHops1 h1 = h.getAugmentation(ExplicitHops1.class);
197                                 if (h1 != null) {
198                                         final SubobjectsBuilder sb = new SubobjectsBuilder();
199                                         sb.fieldsFrom(h1);
200                                         sb.setLoose(h.isLoose());
201                                         subobjs.add(sb.build());
202                                 } else {
203                                         LOG.debug("Ignoring unhandled explicit hop {}", h);
204                                 }
205                         }
206                         b.setSubobjects(subobjs);
207                 }
208                 return b.build();
209         }
210
211         @Override
212         public ListenableFuture<RpcResult<PcepCreateP2pTunnelOutput>> pcepCreateP2pTunnel(final PcepCreateP2pTunnelInput input) {
213                 final InstructionExecutor e = new AbstractTopologyProgrammingExecutor() {
214                         @Override
215                         protected ListenableFuture<OperationResult> executeImpl() {
216                                 final InstanceIdentifier<Topology> tii = topologyIdentifier(input);
217
218                                 final DataModificationTransaction t = TunnelProgramming.this.dataProvider.beginTransaction();
219
220                                 final TpReader dr = new TpReader(t, tii, input.getDestination());
221                                 final TpReader sr = new TpReader(t, tii, input.getSource());
222
223                                 final Node sn = Preconditions.checkNotNull(sr.getNode());
224                                 final TerminationPoint sp = Preconditions.checkNotNull(sr.getTp());
225                                 final TerminationPoint dp = Preconditions.checkNotNull(dr.getTp());
226
227                                 final AddLspInputBuilder ab = new AddLspInputBuilder();
228                                 ab.setNode(Preconditions.checkNotNull(supportingNode(t, sn)));
229                                 ab.setName(Preconditions.checkNotNull(input.getSymbolicPathName()));
230
231                                 // The link has to be non-existent
232                                 final InstanceIdentifier<Link> lii = NodeChangedListener.linkIdentifier(tii, ab.getNode(), ab.getName());
233                                 Preconditions.checkState(t.readOperationalData(lii) == null);
234
235                                 final ArgumentsBuilder args = new ArgumentsBuilder();
236                                 args.setAdministrative(input.getAdministrativeStatus() == AdministrativeStatus.Active);
237                                 args.setBandwidth(new BandwidthBuilder().setBandwidth(input.getBandwidth()).build());
238                                 args.setClassType(new ClassTypeBuilder().setClassType(input.getClassType()).build());
239                                 args.setEndpointsObj(new EndpointsObjBuilder().setAddressFamily(buildAddressFamily(sp, dp)).build());
240                                 args.setEro(buildEro(input.getExplicitHops()));
241                                 args.setLspa(new LspaBuilder(input).build());
242
243                                 ab.setArguments(args.build());
244
245                                 return Futures.transform(
246                                                 (ListenableFuture<RpcResult<AddLspOutput>>) TunnelProgramming.this.topologyService.addLsp(ab.build()),
247                                                 new Function<RpcResult<AddLspOutput>, OperationResult>() {
248                                                         @Override
249                                                         public OperationResult apply(final RpcResult<AddLspOutput> input) {
250                                                                 return input.getResult();
251                                                         }
252                                                 });
253                         }
254                 };
255
256                 final Failure f = this.scheduler.submitInstruction(input, e);
257                 final PcepCreateP2pTunnelOutputBuilder b = new PcepCreateP2pTunnelOutputBuilder();
258                 if (f != null) {
259                         b.setResult(new FailureBuilder().setFailure(f).build());
260                 }
261
262                 final RpcResult<PcepCreateP2pTunnelOutput> res = SuccessfulRpcResult.create(b.build());
263                 return Futures.immediateFuture(res);
264         }
265
266         // FIXME: topology programming utility class
267         private InstanceIdentifier<Topology> topologyIdentifier(final TopologyInstructionInput input) {
268                 return InstanceIdentifier.builder(NetworkTopology.class).child(Topology.class, new TopologyKey(input.getTopologyId())).toInstance();
269         }
270
271         // FIXME: tunnel programming utility class
272         private InstanceIdentifier<Link> linkIdentifier(final InstanceIdentifier<Topology> topology, final BaseTunnelInput input) {
273                 return InstanceIdentifier.builder(topology).child(Link.class, new LinkKey(Preconditions.checkNotNull(input.getLinkId()))).toInstance();
274         }
275
276         private Node sourceNode(final DataModificationTransaction t, final InstanceIdentifier<Topology> topology, final Link link) {
277                 final InstanceIdentifier<Node> nii = InstanceIdentifier.builder(topology).child(Node.class,
278                                 new NodeKey(link.getSource().getSourceNode())).toInstance();
279                 return (Node) t.readOperationalData(nii);
280         }
281
282         @Override
283         public ListenableFuture<RpcResult<PcepDestroyTunnelOutput>> pcepDestroyTunnel(final PcepDestroyTunnelInput input) {
284                 final InstructionExecutor e = new AbstractTopologyProgrammingExecutor() {
285                         @Override
286                         protected ListenableFuture<OperationResult> executeImpl() {
287                                 final InstanceIdentifier<Topology> tii = topologyIdentifier(input);
288                                 final InstanceIdentifier<Link> lii = linkIdentifier(tii, input);
289
290                                 final DataModificationTransaction t = TunnelProgramming.this.dataProvider.beginTransaction();
291
292                                 // The link has to exist
293                                 final Link link = (Link) t.readOperationalData(lii);
294                                 Preconditions.checkState(link != null);
295
296                                 // The source node has to exist
297                                 final Node node = sourceNode(t, tii, link);
298                                 Preconditions.checkState(node != null);
299
300                                 final RemoveLspInputBuilder ab = new RemoveLspInputBuilder();
301                                 ab.setName(link.getAugmentation(Link1.class).getSymbolicPathName());
302                                 ab.setNode(node.getSupportingNode().get(0).getKey().getNodeRef());
303
304                                 return Futures.transform(
305                                                 (ListenableFuture<RpcResult<RemoveLspOutput>>) TunnelProgramming.this.topologyService.removeLsp(ab.build()),
306                                                 new Function<RpcResult<RemoveLspOutput>, OperationResult>() {
307                                                         @Override
308                                                         public OperationResult apply(final RpcResult<RemoveLspOutput> input) {
309                                                                 return input.getResult();
310                                                         }
311                                                 });
312                         }
313                 };
314
315                 final Failure f = this.scheduler.submitInstruction(input, e);
316                 final PcepDestroyTunnelOutputBuilder b = new PcepDestroyTunnelOutputBuilder();
317                 if (f != null) {
318                         b.setResult(new FailureBuilder().setFailure(f).build());
319                 }
320
321                 final RpcResult<PcepDestroyTunnelOutput> res = SuccessfulRpcResult.create(b.build());
322                 return Futures.immediateFuture(res);
323         }
324
325         @Override
326         public ListenableFuture<RpcResult<PcepUpdateTunnelOutput>> pcepUpdateTunnel(final PcepUpdateTunnelInput input) {
327                 final InstructionExecutor e = new AbstractTopologyProgrammingExecutor() {
328                         @Override
329                         protected ListenableFuture<OperationResult> executeImpl() {
330                                 final InstanceIdentifier<Topology> tii = topologyIdentifier(input);
331                                 final InstanceIdentifier<Link> lii = linkIdentifier(tii, input);
332
333                                 final DataModificationTransaction t = TunnelProgramming.this.dataProvider.beginTransaction();
334
335                                 // The link has to exist
336                                 final Link link = (Link) t.readOperationalData(lii);
337                                 Preconditions.checkState(link != null);
338
339                                 // The source node has to exist
340                                 final Node node = sourceNode(t, tii, link);
341                                 Preconditions.checkState(node != null);
342
343                                 final UpdateLspInputBuilder ab = new UpdateLspInputBuilder();
344                                 ab.setName(link.getAugmentation(Link1.class).getSymbolicPathName());
345                                 ab.setNode(Preconditions.checkNotNull(supportingNode(t, node)));
346
347                                 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.update.lsp.args.ArgumentsBuilder args = new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.update.lsp.args.ArgumentsBuilder();
348
349                                 args.setAdministrative(input.getAdministrativeStatus() == AdministrativeStatus.Active);
350                                 args.setBandwidth(new BandwidthBuilder().setBandwidth(input.getBandwidth()).build());
351                                 args.setClassType(new ClassTypeBuilder().setClassType(input.getClassType()).build());
352                                 args.setEro(buildEro(input.getExplicitHops()));
353                                 args.setLspa(new LspaBuilder(input).build());
354
355                                 ab.setArguments(args.build());
356
357                                 return Futures.transform(
358                                                 (ListenableFuture<RpcResult<UpdateLspOutput>>) TunnelProgramming.this.topologyService.updateLsp(ab.build()),
359                                                 new Function<RpcResult<UpdateLspOutput>, OperationResult>() {
360                                                         @Override
361                                                         public OperationResult apply(final RpcResult<UpdateLspOutput> input) {
362                                                                 return input.getResult();
363                                                         }
364                                                 });
365                         }
366                 };
367
368                 final Failure f = this.scheduler.submitInstruction(input, e);
369                 final PcepUpdateTunnelOutputBuilder b = new PcepUpdateTunnelOutputBuilder();
370                 if (f != null) {
371                         b.setResult(new FailureBuilder().setFailure(f).build());
372                 }
373
374                 final RpcResult<PcepUpdateTunnelOutput> res = SuccessfulRpcResult.create(b.build());
375                 return Futures.immediateFuture(res);
376         }
377
378         @Override
379         public void close() {
380                 // FIXME: BUG-186: remove all scheduled instructions, etc.
381         }
382 }