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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.trait;
import io.fd.hc2vpp.common.translate.util.AddressTranslator;
import io.fd.hc2vpp.common.translate.util.ByteDataTranslator;
import io.fd.vpp.jvpp.core.types.FibPath;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.routing.rev140524.SpecialNextHopGrouping;
import javax.annotation.Nonnull;
import java.util.Arrays;
import java.util.stream.IntStream;
public interface RouteMapper extends AddressTranslator, ByteDataTranslator {
int DEFAULT_INTERFACE_INDEX = -1;
RouteMapper INSTANCE = new RouteMapper() {
};
static boolean isDefaultInterfaceIndex(final int index) {
return DEFAULT_INTERFACE_INDEX == index;
}
static boolean flagEnabled(final byte flag) {
return ByteDataTranslator.INSTANCE.byteToBoolean(flag);
}
/**
* Verifies whether provided table id is for provided protocol name
*/
default boolean isWithinProtocol(@Nonnull final String protocolName,
@Nonnull final String routingProtocolNamePrefix,
@Nonnull final Integer tableId) {
return protocolName.equals(fullRoutingProtocolName(routingProtocolNamePrefix, tableId));
}
/**
* Return full protocol name in form routing_protocol_name_prefix + table
*/
default String fullRoutingProtocolName(@Nonnull final String routingProtocolNamePrefix,
@Nonnull final Integer tableId) {
return nameWithPrefix(routingProtocolNamePrefix, String.valueOf(tableId));
}
default String bindName(@Nonnull final String first, @Nonnull final String second, @Nonnull final String third) {
return String.format("%s_%s_%s", first, second, third);
}
default String nameWithPrefix(@Nonnull final String prefix, @Nonnull final String name) {
return String.format("%s_%s", prefix, name);
}
default boolean equalsWithConfigOrLearned(@Nonnull final String learnedPrefix, @Nonnull final String searched,
@Nonnull final String name) {
return searched.equals(name) || searched.equals(nameWithPrefix(learnedPrefix, name));
}
/**
* Resolve if provided {@link FibPath} should be considered as special hop.
* Special hop is hop that has any of special flags turned on(drop,local,prohibit,unreachable)
*/
default boolean isSpecialHop(@Nonnull final FibPath path) {
return byteToBoolean(path.isDrop) || byteToBoolean(path.isLocal) || byteToBoolean(path.isProhibit) ||
byteToBoolean(path.isUnreach);
}
default boolean isTableLookup(@Nonnull final FibPath path) {
// TODO - remove isDrop condition https://jira.fd.io/browse/VPP-995
return path.isDrop == 1 && isArrayZeroed(path.nextHop);
}
default SpecialNextHopGrouping.SpecialNextHop specialHopType(final FibPath singlePath) {
if (flagEnabled(singlePath.isDrop)) {
return SpecialNextHopGrouping.SpecialNextHop.Blackhole;
} else if (flagEnabled(singlePath.isLocal)) {
return SpecialNextHopGrouping.SpecialNextHop.Receive;
} else if (flagEnabled(singlePath.isProhibit)) {
return SpecialNextHopGrouping.SpecialNextHop.Prohibit;
} else if (flagEnabled(singlePath.isUnreach)) {
return SpecialNextHopGrouping.SpecialNextHop.Unreachable;
} else {
throw new IllegalArgumentException(
String.format("An attempt to resolve illegal path %s detected ", singlePath.toString()));
}
}
}
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