Java tutorial
/* * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */ package org.opendaylight.bgpcep.pcep.tunnel.provider; import com.google.common.base.Function; import com.google.common.base.Preconditions; import com.google.common.util.concurrent.Futures; import com.google.common.util.concurrent.ListenableFuture; import org.opendaylight.bgpcep.pcep.topology.spi.AbstractInstructionExecutor; import org.opendaylight.bgpcep.programming.topology.TopologyProgrammingUtil; import org.opendaylight.bgpcep.programming.tunnel.TunnelProgrammingUtil; import org.opendaylight.controller.md.sal.binding.api.DataBroker; import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction; import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType; import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.AdministrativeStatus; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.Arguments3; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.Arguments3Builder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.PcepUpdateTunnelInput1; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.LspBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.bandwidth.object.BandwidthBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.classtype.object.ClassTypeBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lspa.object.LspaBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.NetworkTopologyPcepService; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.OperationResult; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspInput; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspInputBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspOutput; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.programming.rev131030.PcepUpdateTunnelInput; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev130820.Link1; import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology; import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link; import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node; import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; import org.opendaylight.yangtools.yang.common.RpcResult; import org.slf4j.Logger; import org.slf4j.LoggerFactory; final class UpdateTunnelInstructionExecutor extends AbstractInstructionExecutor { private static final Logger LOG = LoggerFactory.getLogger(UpdateTunnelInstructionExecutor.class); private final PcepUpdateTunnelInput updateTunnelInput; private final DataBroker dataProvider; private final NetworkTopologyPcepService topologyService; UpdateTunnelInstructionExecutor(final PcepUpdateTunnelInput updateTunnelInput, final DataBroker dataProvider, final NetworkTopologyPcepService topologyService) { super(updateTunnelInput); this.updateTunnelInput = updateTunnelInput; this.dataProvider = dataProvider; this.topologyService = topologyService; } @Override protected ListenableFuture<OperationResult> invokeOperation() { final InstanceIdentifier<Topology> tii = TopologyProgrammingUtil.topologyForInput(this.updateTunnelInput); final InstanceIdentifier<Link> lii = TunnelProgrammingUtil.linkIdentifier(tii, this.updateTunnelInput); try (final ReadOnlyTransaction t = this.dataProvider.newReadOnlyTransaction()) { final Link link; final Node node; try { // The link has to exist link = t.read(LogicalDatastoreType.OPERATIONAL, lii).checkedGet().get(); // The source node has to exist node = TunelProgrammingUtil.sourceNode(t, tii, link).get(); } catch (IllegalStateException | ReadFailedException e) { LOG.debug("Link or node does not exist.", e); return TunelProgrammingUtil.RESULT; } return Futures.transform( (ListenableFuture<RpcResult<UpdateLspOutput>>) this.topologyService .updateLsp(buildUpdateInput(link, node)), new Function<RpcResult<UpdateLspOutput>, OperationResult>() { @Override public OperationResult apply(final RpcResult<UpdateLspOutput> input) { return input.getResult(); } }); } } private UpdateLspInput buildUpdateInput(final Link link, final Node node) { final UpdateLspInputBuilder ab = new UpdateLspInputBuilder(); ab.setName(link.getAugmentation(Link1.class).getSymbolicPathName()); ab.setNode(Preconditions.checkNotNull(TunelProgrammingUtil.supportingNode(node))); 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(); args.setBandwidth(new BandwidthBuilder().setBandwidth(this.updateTunnelInput.getBandwidth()).build()); args.setClassType(new ClassTypeBuilder().setClassType(this.updateTunnelInput.getClassType()).build()); args.setEro(TunelProgrammingUtil.buildEro(this.updateTunnelInput.getExplicitHops())); args.setLspa(new LspaBuilder(this.updateTunnelInput).build()); final AdministrativeStatus adminStatus = this.updateTunnelInput .getAugmentation(PcepUpdateTunnelInput1.class).getAdministrativeStatus(); if (adminStatus != null) { args.addAugmentation(Arguments3.class, new Arguments3Builder().setLsp(new LspBuilder() .setAdministrative((adminStatus == AdministrativeStatus.Active) ? true : false).build()) .build()); } ab.setArguments(args.build()); return ab.build(); } }