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/*
* Copyright (c) 2017 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.v3po.interfacesstate.cache;
import io.fd.honeycomb.translate.read.ReadContext;
import io.fd.honeycomb.translate.read.ReadFailedException;
import io.fd.jvpp.core.dto.SwInterfaceDetails;
import java.util.stream.Stream;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
/**
* Manager for dump data of interfaces. The main purpose of this manager is to cache common interface data between
* various classes that process this kind of data. If reader does not use this utility, it introduces a big overhead
* because of size/complexity of interfaces dump
*/
public interface InterfaceCacheDumpManager {
/**
* Provides stream of all currently configured vpp interfaces
*
* @param identifier id of currently processed data
* @param ctx context of current transaction
* @return {@link Stream} of currently configured interfaces
* @throws ReadFailedException if dumping of data was unsuccessful
*/
@Nonnull
Stream<SwInterfaceDetails> getInterfaces(@Nonnull final InstanceIdentifier<?> identifier,
@Nonnull final ReadContext ctx) throws ReadFailedException;
/**
* Provides details of interface
*
* @param identifier id of currently processed data
* @param ctx context of current transaction
* @param interfaceName name of requested interface
* @return {@link SwInterfaceDetails} of requested interface
* @throws ReadFailedException if dumping of data was unsuccessful
*/
@Nullable
SwInterfaceDetails getInterfaceDetail(@Nonnull final InstanceIdentifier<?> identifier,
@Nonnull final ReadContext ctx,
@Nonnull final String interfaceName) throws ReadFailedException;
}
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