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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.onap.appc.client.impl.core;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* client lib Registry
*/
class CoreRegistry<T> {
private final EmptyRegistryCallback emptyRegistryCallback;
private Map<String, T> registry = new ConcurrentHashMap<>();
CoreRegistry(EmptyRegistryCallback emptyRegistryCallback) {
this.emptyRegistryCallback = emptyRegistryCallback;
}
void register(String key, T obj) {
registry.put(key, obj);
}
T unregister(String key) {
T item = registry.remove(key);
if (registry.isEmpty()) {
emptyRegistryCallback.emptyCallback();
}
return item;
}
T get(String key) {
return registry.get(key);
}
synchronized boolean isExist(String key) {
return registry.containsKey(key);
}
boolean isEmpty() {
return registry.isEmpty();
}
@FunctionalInterface
public interface EmptyRegistryCallback {
void emptyCallback();
}
}
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