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/*
* 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.read.policy.request;
import com.google.common.base.Preconditions;
import io.fd.hc2vpp.srv6.read.ReadRequest;
import io.fd.hc2vpp.srv6.util.CandidatePathContextManager;
import io.fd.hc2vpp.srv6.util.JVppRequest;
import io.fd.hc2vpp.srv6.util.PolicyContextManager;
import io.fd.hc2vpp.srv6.util.Srv6Util;
import io.fd.honeycomb.translate.read.ReadContext;
import io.fd.honeycomb.translate.read.ReadFailedException;
import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
import io.fd.vpp.jvpp.core.dto.SrPoliciesDetails;
import io.fd.vpp.jvpp.core.dto.SrPoliciesDetailsReplyDump;
import io.fd.vpp.jvpp.core.dto.SrPoliciesDump;
import io.fd.vpp.jvpp.core.future.FutureJVppCore;
import io.fd.vpp.jvpp.core.types.Srv6Sid;
import io.fd.vpp.jvpp.core.types.Srv6SidList;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.BindingSidAllocMode;
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.PathExplicitlyDefined;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.PolicyAdminState;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.SegmentListOperState;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.SegmentType;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.SidValueType;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.binding.sid.properties.BindingSidBuilder;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.binding.sid.properties.binding.sid.StateBuilder;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.candidate.paths.CandidatePathsBuilder;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.candidate.paths.candidate.paths.CandidatePath;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.candidate.paths.candidate.paths.CandidatePathBuilder;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.named.segment.lists.named.segment.lists.NamedSegmentList;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.named.segment.lists.named.segment.lists.NamedSegmentListBuilder;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.named.segment.lists.named.segment.lists.NamedSegmentListKey;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.named.segment.lists.named.segment.lists.named.segment.list.SegmentsBuilder;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.named.segment.lists.named.segment.lists.named.segment.list.segments.Segment;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.named.segment.lists.named.segment.lists.named.segment.list.segments.SegmentBuilder;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.named.segment.lists.named.segment.lists.named.segment.list.segments.SegmentKey;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.path.segment.list.properties.SegmentListsBuilder;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.path.segment.list.properties.segment.lists.SegmentList;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.path.segment.list.properties.segment.lists.SegmentListBuilder;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.policies.policies.Policy;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.policies.policies.PolicyBuilder;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.policies.policies.PolicyKey;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.fib.table.management.rev180521.Ipv6;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.fib.table.management.rev180521.VniReference;
import org.opendaylight.yang.gen.v1.urn.hc2vpp.params.xml.ns.yang.vpp.oc.srte.policy.rev180514.SegmentRoutingPolicyBehavior;
import org.opendaylight.yang.gen.v1.urn.hc2vpp.params.xml.ns.yang.vpp.oc.srte.policy.rev180514.SegmentRoutingPolicyType;
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.VppSrPolicyAugmentationBuilder;
import org.opendaylight.yang.gen.v1.urn.hc2vpp.params.xml.ns.yang.vpp.oc.srte.policy.rev180514.segment.routing.traffic.engineering.policies.policy.VppSrPolicyBuilder;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.policy.context.rev180607.srv6.candidate.path.context.attributes.srv6.candidate.path.mappings.Srv6CandidatePathMapping;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.policy.context.rev180607.srv6.policy.context.attributes.srv6.policy.mappings.Srv6PolicyMapping;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Address;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class PolicyReadRequest extends JVppRequest
implements ReadRequest<Policy, PolicyKey, PolicyBuilder> {
private static final String DASH_SEPARATOR = "-";
private static final Logger LOG = LoggerFactory.getLogger(PolicyReadRequest.class);
private static final SrPoliciesDump STATIC_DUMP_REQUEST = new SrPoliciesDump();
private static final SrPoliciesDetailsReplyDump STATIC_EMPTY_REPLY = new SrPoliciesDetailsReplyDump();
private final PolicyContextManager policyCtx;
private final CandidatePathContextManager candidateCtx;
private final DumpCacheManager<SrPoliciesDetailsReplyDump, Void> dumpManager;
public PolicyReadRequest(FutureJVppCore futureJVpp, PolicyContextManager policyCtx,
final CandidatePathContextManager candidateCtx) {
super(futureJVpp);
this.policyCtx = policyCtx;
this.candidateCtx = candidateCtx;
this.dumpManager = new DumpCacheManager.DumpCacheManagerBuilder<SrPoliciesDetailsReplyDump, Void>().acceptOnly(
SrPoliciesDetailsReplyDump.class)
.withExecutor((identifier, params) -> getReplyForRead(
getApi().srPoliciesDump(STATIC_DUMP_REQUEST).toCompletableFuture(), identifier))
.build();
}
@Nonnull
public List<PolicyKey> readAllKeys(@Nonnull InstanceIdentifier<Policy> id, @Nonnull ReadContext ctx)
throws ReadFailedException {
return dumpManager.getDump(id, ctx.getModificationCache()).or(STATIC_EMPTY_REPLY).srPoliciesDetails.stream()
.map(srPoliciesDetails -> arrayToIpv6AddressNoZone(srPoliciesDetails.bsid.addr))
.map(bsid -> parsePolicyKey(ctx, bsid))
.collect(Collectors.toList());
}
private PolicyKey parsePolicyKey(final @Nonnull ReadContext ctx, final Ipv6Address bsid) {
Srv6PolicyMapping policy = policyCtx.getPolicy(bsid, ctx.getMappingContext());
return new PolicyKey(policy.getColor(), new IpAddress(policy.getEndpoint()));
}
@Override
public void readSpecific(@Nonnull InstanceIdentifier<Policy> id, @Nonnull ReadContext ctx,
@Nonnull PolicyBuilder builder) throws ReadFailedException {
PolicyKey key = id.firstKeyOf(Policy.class);
Ipv6Address bsid =
policyCtx.getPolicyBsid(key.getColor(), key.getEndpoint().getIpv6Address(), ctx.getMappingContext());
dumpManager.getDump(id, ctx.getModificationCache()).or(STATIC_EMPTY_REPLY).srPoliciesDetails.stream()
.filter(srPoliciesDetails -> arrayToIpv6AddressNoZone(srPoliciesDetails.bsid.addr).getValue()
.equals(bsid.getValue()))
.findFirst()
.ifPresent((SrPoliciesDetails details) -> bindPolicy(details, ctx, builder));
}
private void bindPolicy(SrPoliciesDetails srPoliciesDetails, @Nonnull ReadContext ctx,
final PolicyBuilder builder) {
Ipv6Address bsid = arrayToIpv6AddressNoZone(srPoliciesDetails.bsid.addr);
Srv6PolicyMapping policy = policyCtx.getPolicy(bsid, ctx.getMappingContext());
IpAddress endpoint = new IpAddress(policy.getEndpoint());
builder.setName(policy.getName()).setEndpoint(endpoint).setColor(policy.getColor());
builder.withKey(new PolicyKey(policy.getColor(), endpoint));
builder.setBindingSid(new BindingSidBuilder().setState(
new StateBuilder().setType(DataplaneType.Srv6).setAllocMode(BindingSidAllocMode.Explicit)
.setValue(new SidValueType(new IpAddress(bsid))).build()).build());
builder.addAugmentation(VppSrPolicyAugmentation.class, new VppSrPolicyAugmentationBuilder()
.setVppSrPolicy(new VppSrPolicyBuilder().setState(
new org.opendaylight.yang.gen.v1.urn.hc2vpp.params.xml.ns.yang.vpp.oc.srte.policy.rev180514.sr.policy.StateBuilder()
.setPolicyBehavior(
SegmentRoutingPolicyBehavior.forValue((int) srPoliciesDetails.isEncap))
.setPolicyType(SegmentRoutingPolicyType.forValue((int) srPoliciesDetails.type))
.setTableId(new VniReference(Integer.toUnsignedLong(srPoliciesDetails.fibTable)))
.setAddressFamily(Ipv6.class)
.build()).build())
.build());
builder.setState(
new org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.policy.properties.StateBuilder()
.setName(policy.getName()).setEndpoint(endpoint)
.setColor(policy.getColor()).setAdminState(PolicyAdminState.UP)
.build());
builder.setCandidatePaths(
new CandidatePathsBuilder().setCandidatePath(resolveCandidatePaths(srPoliciesDetails, ctx)).build());
}
private List<CandidatePath> resolveCandidatePaths(final SrPoliciesDetails srPoliciesDetails,
final ReadContext ctx) {
List<CandidatePath> candidatePaths = new ArrayList<>();
//only one candidate path can be selected and present on device at the same time
if (srPoliciesDetails.sidLists == null) {
LOG.debug("No policy segments found for BSID: {}", srPoliciesDetails.bsid);
return candidatePaths;
}
Ipv6Address bsid = arrayToIpv6AddressNoZone(srPoliciesDetails.bsid.addr);
Srv6CandidatePathMapping candidatePath =
candidateCtx.getCandidatePath(bsid, ctx.getMappingContext());
CandidatePathBuilder candidatePathBuilder =
new CandidatePathBuilder()
.setDistinguisher(candidatePath.getDistinguisher())
.setPreference(candidatePath.getPreference())
.setProvisioningMethod(candidatePath.getProvisioningMethod())
.setName(candidatePath.getName());
candidatePathBuilder.setState(
new org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.candidate.paths.candidate.paths.candidate.path.StateBuilder()
.setDistinguisher(candidatePath.getDistinguisher())
.setPreference(candidatePath.getPreference())
.setProvisioningMethod(candidatePath.getProvisioningMethod())
.setComputationMethod(PathExplicitlyDefined.class)
.setName(candidatePath.getName())
.build());
candidatePathBuilder.setBindingSid(new BindingSidBuilder().setState(
new StateBuilder().setAllocMode(BindingSidAllocMode.Explicit).setType(DataplaneType.Srv6)
.setValue(new SidValueType(new IpAddress(bsid))).build()).build());
List<SegmentList> segments = new ArrayList<>();
for (Srv6SidList sidlist : srPoliciesDetails.sidLists) {
long weight = Integer.toUnsignedLong(sidlist.weight);
SegmentListBuilder segmentListBuilder =
new SegmentListBuilder().setName(Srv6Util.getCandidatePathName(bsid, weight));
segmentListBuilder.setState(
new org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.path.segment.list.StateBuilder()
.setName(Srv6Util.getCandidatePathName(bsid, weight))
.setWeight(weight)
.setOperState(SegmentListOperState.ACTIVE)
.build());
segments.add(segmentListBuilder.build());
}
candidatePathBuilder.setSegmentLists(new SegmentListsBuilder().setSegmentList(segments).build());
candidatePaths.add(candidatePathBuilder.build());
return candidatePaths;
}
public List<NamedSegmentListKey> readNamedSegmentListKeys(final InstanceIdentifier<NamedSegmentList> id,
final ReadContext ctx) throws ReadFailedException {
return dumpManager.getDump(id, ctx.getModificationCache()).or(STATIC_EMPTY_REPLY).srPoliciesDetails.stream()
.map(srPoliciesDetails -> {
String bsid = arrayToIpv6AddressNoZone(srPoliciesDetails.bsid.addr).getValue();
return Arrays.stream(srPoliciesDetails.sidLists).map(srv6SidList -> srv6SidList.weight)
.map(weight -> bsid + DASH_SEPARATOR + weight).collect(Collectors.toList());
}).flatMap(Collection::stream).map(NamedSegmentListKey::new).distinct().collect(Collectors.toList());
}
public void readNamedSegmentList(final InstanceIdentifier<NamedSegmentList> id,
final NamedSegmentListBuilder builder,
final ReadContext ctx)
throws ReadFailedException {
NamedSegmentListKey key = id.firstKeyOf(NamedSegmentList.class);
builder.withKey(key)
.setName(key.getName())
.setState(
new org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.segment.list.properties.StateBuilder()
.setName(key.getName())
.build());
Long weight = parseWeight(key);
String bsid = parseBsid(key);
Preconditions.checkNotNull(bsid, "Weight/Bsid not resolved for Iid: {}", id);
builder.setSegments(new SegmentsBuilder().build());
dumpManager.getDump(id, ctx.getModificationCache()).or(STATIC_EMPTY_REPLY).srPoliciesDetails.stream()
.filter(srPoliciesDetails -> arrayToIpv6AddressNoZone(srPoliciesDetails.bsid.addr).getValue()
.equals(bsid))
.forEach(srPoliciesDetails -> Arrays.stream(srPoliciesDetails.sidLists)
.forEach(srv6SidList -> {
if (srv6SidList.weight == weight.intValue()) {
List<Segment> segments = IntStream.range(0, srv6SidList.numSids)
.mapToObj(i -> parseSrv6Sid(i, srv6SidList.sids[i]))
.collect(Collectors.toList());
builder.setSegments(new SegmentsBuilder().setSegment(segments).build());
}
}));
}
private Segment parseSrv6Sid(final long i, final Srv6Sid srv6Sid) {
// shifting index by 1 so it matches original indexing
long index = i + 1L;
SegmentBuilder builder = new SegmentBuilder().withKey(new SegmentKey(index)).setState(
new org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.segment.properties.StateBuilder()
.setIndex(index)
.setType(SegmentType.Type2)
.setSidValue(new SidValueType(
new IpAddress(new Ipv6Address(arrayToIpv6AddressNoZone(srv6Sid.addr)))))
.build());
return builder.build();
}
private Long parseWeight(final NamedSegmentListKey key) {
String[] values = key.getName().split(DASH_SEPARATOR);
return values.length == 2
? Long.parseLong(values[1])
: 0;
}
private String parseBsid(final NamedSegmentListKey key) {
String[] values = key.getName().split(DASH_SEPARATOR);
return values.length == 2 ? values[0] : null;
}
}
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