diff options
Diffstat (limited to 'srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/Srv6Util.java')
-rw-r--r-- | srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/Srv6Util.java | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/Srv6Util.java b/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/Srv6Util.java new file mode 100644 index 000000000..ea308efcf --- /dev/null +++ b/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/Srv6Util.java @@ -0,0 +1,99 @@ +/* + * Copyright (c) 2018 Bell Canada, Pantheon Technologies and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + +package io.fd.hc2vpp.srv6.util; + +import com.google.common.base.Optional; +import io.fd.honeycomb.translate.util.RWUtils; +import io.fd.honeycomb.translate.write.WriteContext; +import javax.annotation.Nonnull; +import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.DataplaneType; +import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.policies.policies.Policy; +import org.opendaylight.yang.gen.v1.urn.hc2vpp.params.xml.ns.yang.vpp.oc.srte.policy.rev180514.VppSrPolicyAugmentation; +import org.opendaylight.yang.gen.v1.urn.hc2vpp.params.xml.ns.yang.vpp.oc.srte.policy.rev180514.segment.routing.traffic.engineering.policies.policy.VppSrPolicy; +import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Address; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; + +public final class Srv6Util { + + /** + * Constructs unique name for candidate path based on binding sid and weight + * + * @param bsid binding sid associated with candidate path + * @param weight weight of actual sidList + * @return candidate path name + */ + public static String getCandidatePathName(final Ipv6Address bsid, final long weight) { + return bsid.getValue() + "-" + weight; + } + + /** + * Extracts BSID from policy, based on read/write operation it uses dataBefore/dataAfter while reading config + * + * @param instanceIdentifier identifier used to extract path of policy + * @param writeContext used to store any useful information later utilized by customizers + * @param isWrite condition whether this is a write or delete operation + * @return BSID in form of IPv6 address or null if not resolved + */ + public static <T extends DataObject> Ipv6Address extractBsid( + final @Nonnull InstanceIdentifier<T> instanceIdentifier, final @Nonnull WriteContext writeContext, + boolean isWrite) { + Optional<Policy> policyOptional = isWrite + ? writeContext.readAfter(RWUtils.cutId(instanceIdentifier, Policy.class)) + : writeContext.readBefore(RWUtils.cutId(instanceIdentifier, Policy.class)); + + if (policyOptional.isPresent() && policyOptional.get().getBindingSid() != null && + policyOptional.get().getBindingSid().getConfig() != null) { + org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.binding.sid.properties.binding.sid.Config + config = policyOptional.get().getBindingSid().getConfig(); + if (config.getType() == DataplaneType.Srv6 && config.getValue() != null && + config.getValue().getIpAddress() != null && + config.getValue().getIpAddress().getIpv6Address() != null) { + return config.getValue().getIpAddress().getIpv6Address(); + } + } + return null; + } + + /** + * Extracts VRF FIB from Policy. + * + * @param instanceIdentifier identifier used to extract path of policy + * @param writeContext used to store any useful information later utilized by customizers + * @param isWrite condition whether this is a write or delete operation + * @return VRF FIB id when resolved, default VRF FIB (0) otherwise + */ + public static <T extends DataObject> int extractVrfFib(final @Nonnull InstanceIdentifier<T> instanceIdentifier, + final @Nonnull WriteContext writeContext, boolean isWrite) { + Optional<Policy> policyOptional = isWrite + ? writeContext.readAfter(RWUtils.cutId(instanceIdentifier, Policy.class)) + : writeContext.readBefore(RWUtils.cutId(instanceIdentifier, Policy.class)); + + if (policyOptional.isPresent() && policyOptional.get().getAugmentation(VppSrPolicyAugmentation.class) != null && + policyOptional.get().getAugmentation(VppSrPolicyAugmentation.class).getVppSrPolicy() != null) { + + VppSrPolicy vppSrPolicy = + policyOptional.get().getAugmentation(VppSrPolicyAugmentation.class).getVppSrPolicy(); + if (vppSrPolicy.getConfig() != null && vppSrPolicy.getConfig().getTableId() != null) { + return vppSrPolicy.getConfig().getTableId().getValue().intValue(); + } + } + // returning default Vrf Fib table + return 0; + } +} |