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/*
* Copyright (c) 2016 Cisco 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.routing.write.trait;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.Objects.isNull;
import static org.apache.commons.lang3.StringUtils.isNotEmpty;
import com.google.common.collect.ImmutableSet.Builder;
import io.fd.hc2vpp.common.translate.util.AddressTranslator;
import io.fd.hc2vpp.common.translate.util.ByteDataTranslator;
import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
import io.fd.hc2vpp.vpp.classifier.context.VppClassifierContextManager;
import io.fd.honeycomb.translate.MappingContext;
import io.fd.vpp.jvpp.core.dto.IpAddDelRoute;
import java.util.Set;
import java.util.regex.Pattern;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Prefix;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.vpp.routing.rev161214.VniReference;
/**
* Common logic for writing of routes
*/
public interface RouteRequestProducer extends ByteDataTranslator, AddressTranslator, JvppReplyConsumer {
Set<String> allowedPrefixPatterns = new Builder<String>().addAll(Ipv4Prefix.PATTERN_CONSTANTS)
.addAll(Ipv6Prefix.PATTERN_CONSTANTS).build();
byte DEFAULT_VNI = 0;
byte DEFAULT_CLASSIFY_TABLE_INDEX = 0;
byte DEFAULT_HOP_WEIGHT = 0;
int MPLS_LABEL_INVALID = 0x100000;
default int mandatoryVni(final VniReference vniReference) {
return checkNotNull(vniReference, "Vni reference cannot be null").getValue().intValue();
}
default int optionalVni(final VniReference vniReference) {
return isNull(vniReference)
? DEFAULT_VNI
: vniReference.getValue().intValue();
}
default byte extractPrefix(final String value) {
checkArgument(
allowedPrefixPatterns.stream().anyMatch(pattern -> Pattern.compile(pattern).matcher(value).matches()),
"%s is not a valid Ip-prefix value");
return Byte.valueOf(value.substring(value.indexOf("/") + 1));
}
default boolean classifyTablePresent(final String classifyTableName,
final VppClassifierContextManager classifierContextManager,
final MappingContext mappingContext) {
return isNotEmpty(classifyTableName) &&
classifierContextManager.containsTable(classifyTableName, mappingContext);
}
default int classifyTableIndex(final String classifyTableName,
final VppClassifierContextManager classifierContextManager,
final MappingContext mappingContext) {
return classifierContextManager.getTableIndex(classifyTableName, mappingContext);
}
/**
* Creates fully bind {@code IpAddDelRoute} request
*
* @param add 1 if add,delete otherwise
* @param nextHopInterfaceIndex interface for <b>nextHopAddress</b>
* @param nextHopAddress address of hop
* @param nextHopWeight if <b>mutlipath</b>, then set to "order" hops
* @param ipv6 determine if writing ipv4/ipv6 route
* @param destinationAddress address of destination for hop
* @param destinationAddressPrefixLength prefix length of <b>destinationAddress</b>
* @param multipath You can only write one next-hop at a time. set this to true when you are
* adding paths/next-hops to an existing route. It can be true when adding a
* new route.
* @param primaryVrf primary vrf for configured route
* @param secondaryVrf lookup vrf for route
* @param classifyTableIndex index of classify table
* @param classifyTableSet set if classify table index was set
*/
default IpAddDelRoute flaglessAddDelRouteRequest(final byte add,
final int nextHopInterfaceIndex,
final byte[] nextHopAddress,
final byte nextHopWeight,
final byte ipv6,
final byte[] destinationAddress,
final byte destinationAddressPrefixLength,
final byte multipath,
final int primaryVrf,
final int secondaryVrf,
final int classifyTableIndex,
final byte classifyTableSet) {
final IpAddDelRoute request = new IpAddDelRoute();
request.isAdd = add;
request.nextHopSwIfIndex = nextHopInterfaceIndex;
request.dstAddress = destinationAddress;
request.dstAddressLength = destinationAddressPrefixLength;
request.isIpv6 = ipv6;
request.isMultipath = multipath;
request.nextHopAddress = nextHopAddress;
// Model contains also priority but VPP does not support the concept of priority next-hops
request.nextHopWeight = nextHopWeight;
// vrf_id - fib table /vrf associated with the route Not mentioned in model
request.tableId = primaryVrf;
// create vrf if needed needs to be turned on all the time,due to how we map table ids on routing protocols
request.createVrfIfNeeded = 1;
// nextHopTableId - this is used when you want to have a second lookup done in another table.
request.nextHopTableId = secondaryVrf;
// classify_table_index
request.classifyTableIndex = classifyTableIndex;
request.isClassify = classifyTableSet;
request.nextHopViaLabel = MPLS_LABEL_INVALID;
return request;
}
}
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