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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.honeycomb.translate.util.read.cache;
import static com.google.common.base.Preconditions.checkNotNull;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
/**
* {@link CacheKeyFactory} that produces the same key irrespective of the given {@link InstanceIdentifier}.
*/
public class StaticCacheKeyFactory implements CacheKeyFactory<Void> {
private final String key;
private final Class<?> cachedDataType;
/**
* Construct static cache key factory.
*
* @param key string to be used as cache key
* @param cachedDataType data for which this factory is creating keys
*/
public StaticCacheKeyFactory(@Nonnull final String key, @Nonnull final Class<?> cachedDataType) {
this.key = checkNotNull(key, "key should not be null");
this.cachedDataType = checkNotNull(cachedDataType, "cachedDataType should not be null");
}
@Nonnull
@Override
public String createKey(@Nonnull final InstanceIdentifier<?> actualContextIdentifier,
@Nullable final Void dumpParams) {
return key;
}
@Nonnull
@Override
public Class<?> getCachedDataType() {
return cachedDataType;
}
}
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