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/*
* Copyright (c) 2019 PANTHEON.tech.
*
* 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.dhcp.write;
import static com.google.common.base.Preconditions.checkArgument;
import com.google.common.annotations.VisibleForTesting;
import io.fd.honeycomb.translate.write.DataValidationFailedException.CreateValidationFailedException;
import io.fd.honeycomb.translate.write.DataValidationFailedException.DeleteValidationFailedException;
import io.fd.honeycomb.translate.write.DataValidationFailedException.UpdateValidationFailedException;
import io.fd.honeycomb.translate.write.Validator;
import io.fd.honeycomb.translate.write.WriteContext;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.dhcp.rev180629.dhcp.attributes.relays.Relay;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.dhcp.rev180629.relay.attributes.Server;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.fib.table.management.rev180521.Ipv6;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddressNoZone;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
public class DhcpRelayValidator implements Validator<Relay> {
@Override
public void validateWrite(@Nonnull final InstanceIdentifier<Relay> id,
@Nonnull final Relay relay,
@Nonnull final WriteContext writeContext)
throws CreateValidationFailedException {
try {
validateRelay(relay);
} catch (RuntimeException e) {
throw new CreateValidationFailedException(id, relay, e);
}
}
@Override
public void validateUpdate(@Nonnull final InstanceIdentifier<Relay> id,
@Nonnull final Relay dataBefore,
@Nonnull final Relay dataAfter,
@Nonnull final WriteContext writeContext)
throws UpdateValidationFailedException {
try {
validateRelay(dataBefore);
validateRelay(dataAfter);
} catch (RuntimeException e) {
throw new UpdateValidationFailedException(id, dataBefore, dataAfter, e);
}
}
@Override
public void validateDelete(@Nonnull final InstanceIdentifier<Relay> id, @Nonnull final Relay dataBefore,
@Nonnull final WriteContext writeContext)
throws DeleteValidationFailedException {
try {
validateRelay(dataBefore);
} catch (RuntimeException e) {
throw new DeleteValidationFailedException(id, e);
}
}
@VisibleForTesting
void validateRelay(final Relay relay) {
final boolean isIpv6 = Ipv6.class == relay.getAddressFamily();
try {
isAddressCorrect(relay.getGatewayAddress(), isIpv6);
} catch (IllegalArgumentException e) {
throw new IllegalArgumentException(String.format("Gateway address validation error: %s", e.getMessage()));
}
checkArgument(relay.getServer() != null && !relay.getServer().isEmpty(),
"At least one DHCP server needs to be configured");
for (final Server server : relay.getServer()) {
validateServer(server, isIpv6);
}
}
private void validateServer(final Server server, boolean isIpv6) {
try {
isAddressCorrect(server.getAddress(), isIpv6);
} catch (IllegalArgumentException e) {
throw new IllegalArgumentException(
String.format("Server address %s validation error: %s", server.getAddress().stringValue(),
e.getMessage()));
}
}
private void isAddressCorrect(final IpAddressNoZone address, final boolean isIpv6) {
if (isIpv6) {
checkArgument(address.getIpv6AddressNoZone() != null,
"Ipv6 address was expected but was not found.");
checkArgument(address.getIpv4AddressNoZone() == null,
"Only Ipv6 address was expected but Ipv4 was found");
} else {
checkArgument(address.getIpv4AddressNoZone() != null,
"Ipv4 address was expected but was not found.");
checkArgument(address.getIpv6AddressNoZone() == null,
"Only Ipv4 address was expected but Ipv6 was found");
}
}
}
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