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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.util;
import static com.google.common.base.Preconditions.checkArgument;
import io.fd.honeycomb.translate.MappingContext;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Address;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Prefix;
/**
* Manages metadata for SRv6 plugin
*/
public interface LocatorContextManager {
String GROUP_IP = "ip";
String GROUP_PREFIX = "prefix";
Pattern IP_PREFIX_PATTERN = Pattern.compile("(?<ip>\\S.*)/(?<prefix>\\d{1,3})");
/**
* Creates metadata for locator. Existing mapping is overwritten if exists.
*
* @param name locator name
* @param ipv6Prefix locator with locator length in form of Ipv6Prefix
* @param ctx mapping context providing context data for current transaction
*/
void addLocator(@Nonnull final String name, @Nonnull Ipv6Prefix ipv6Prefix, @Nonnull final MappingContext ctx);
/**
* Check whether metadata for given locator is present.
*
* @param name locator name
* @param ctx mapping context providing context data for current transaction
* @return true if present, false otherwise
*/
boolean containsLocator(@Nonnull final String name, @Nonnull final MappingContext ctx);
/**
* Retrieves locator IPv6 prefix for given locator IPv6 address. If not present, artificial name will be generated.
*
* @param name locator name
* @param ctx mapping context providing context data for current transaction
* @return Locator prefix matching supplied locator address
*/
Ipv6Prefix getLocator(@Nonnull final String name, @Nonnull final MappingContext ctx);
/**
* Removes locator metadata from current context.
*
* @param name locator name
* @param ctx mapping context providing context data for current transaction
*/
void removeLocator(@Nonnull final String name, @Nonnull final MappingContext ctx);
static Integer parseLength(@Nonnull final Ipv6Prefix prefix) {
Matcher matcher = IP_PREFIX_PATTERN.matcher(prefix.getValue());
checkArgument(matcher.matches(), "Could`t parse Locator length: {}", prefix);
return Integer.parseInt(matcher.group(GROUP_PREFIX));
}
static Ipv6Address parseLocator(@Nonnull final Ipv6Prefix prefix) {
Matcher matcher = IP_PREFIX_PATTERN.matcher(prefix.getValue());
checkArgument(matcher.matches(), "Could`t parse Locator: {}", prefix);
return new Ipv6Address(matcher.group(GROUP_IP));
}
}
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