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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.honeycomb.translate.v3po.interfaces.acl;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import io.fd.honeycomb.translate.spi.write.WriterCustomizer;
import io.fd.honeycomb.translate.v3po.util.NamingContext;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.ietf.acl.base.attributes.AccessLists;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.IetfAcl;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.openvpp.jvpp.VppBaseCallException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Customizer for enabling/disabling ACLs for given interface (as defined in ietf-acl model).
*
* The customizer assumes it owns classify table management for interfaces where ietf-acl container is present. Using
* low level classifier model or direct changes to classify tables in combination with ietf-acls are not supported and
* can result in unpredictable behaviour.
*/
public class IetfAclCustomizer implements WriterCustomizer<IetfAcl> {
private static final Logger LOG = LoggerFactory.getLogger(IetfAclCustomizer.class);
private final IetfAClWriter aclWriter;
private final NamingContext interfaceContext;
public IetfAclCustomizer(@Nonnull final IetfAClWriter aclWriter,
@Nonnull final NamingContext interfaceContext) {
this.aclWriter = checkNotNull(aclWriter, "aclWriter should not be null");
this.interfaceContext = checkNotNull(interfaceContext, "interfaceContext should not be null");
}
@Override
public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<IetfAcl> id, @Nonnull final IetfAcl dataAfter,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
final String ifName = id.firstKeyOf(Interface.class).getName();
final int ifIndex = interfaceContext.getIndex(ifName, writeContext.getMappingContext());
LOG.debug("Adding ACLs for interface={}(id={}): {}", ifName, ifIndex, dataAfter);
final AccessLists accessLists = dataAfter.getAccessLists();
checkArgument(accessLists != null && accessLists.getAcl() != null,
"ietf-acl container does not define acl list");
try {
aclWriter.write(id, ifIndex, accessLists.getAcl(), writeContext);
} catch (VppBaseCallException e) {
throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
}
}
@Override
public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<IetfAcl> id,
@Nonnull final IetfAcl dataBefore, @Nonnull final IetfAcl dataAfter,
@Nonnull final WriteContext writeContext)
throws WriteFailedException {
LOG.debug("ACLs update: removing previously configured ACLs");
deleteCurrentAttributes(id, dataBefore, writeContext);
LOG.debug("ACLs update: adding updated ACLs");
writeCurrentAttributes(id, dataAfter, writeContext);
LOG.debug("ACLs update was successful");
}
@Override
public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<IetfAcl> id,
@Nonnull final IetfAcl dataBefore,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
final String ifName = id.firstKeyOf(Interface.class).getName();
final int ifIndex = interfaceContext.getIndex(ifName, writeContext.getMappingContext());
LOG.debug("Removing ACLs for interface={}(id={}): {}", ifName, ifIndex, dataBefore);
aclWriter.deleteAcl(id, ifIndex);
}
}
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