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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.acl.util.acl;
import com.google.common.base.Preconditions;
import io.fd.hc2vpp.acl.write.AclValidator;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Optional;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.VppAcl;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.VppAclAugmentation;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.VppMacipAcl;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.AclBase;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.Ipv4AclType;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.Acl;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.Ace;
/**
* Extracts data from Acls.
* Expects data validated by {@link AclValidator}
*/
public interface AclDataExtractor {
/**
* Checks if provided {@link Acl} has aces of type {@link Ipv4AclType} or {@link VppAcl}
*/
default boolean isStandardAcl(@Nonnull final Acl acl) {
Class<? extends AclBase> type =
Preconditions.checkNotNull(acl.getType(), "Type is not set for ACL:{}", acl);
return type.equals(VppAcl.class);
}
/**
* Checks if provided {@link Acl} has aces of type {@link VppMacipAcl}
*/
default boolean isMacIpAcl(@Nonnull final Acl acl) {
Class<? extends AclBase> type =
Preconditions.checkNotNull(acl.getType(), "Type is not set for ACL:{}", acl);
return type.equals(VppMacipAcl.class);
}
default List<Ace> getAces(@Nonnull final Acl acl) {
return Optional.ofNullable(acl.getAces()).orElseThrow(() ->
new IllegalArgumentException(String.format("Unable to extract aces from %s", acl))).getAce();
}
/**
* Convert {@link Acl} tag to byte array in US_ASCII
*/
default byte[] getAclTag(@Nonnull final Acl acl) {
final VppAclAugmentation augmentation = acl.augmentation(VppAclAugmentation.class);
if (augmentation != null && augmentation.getTag() != null) {
return augmentation.getTag().getBytes(StandardCharsets.US_ASCII);
}
return new byte[0];
}
}
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