/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.jclouds.osgi;

import java.util.Set;

import org.jclouds.providers.ProviderMetadata;

import com.google.common.annotations.Beta;
import com.google.common.collect.Sets;

/**
 * A registry for holding {@link org.jclouds.providers.ProviderMetadata}.
 */
@Beta
public class ProviderRegistry {

   private static final Set<ProviderMetadata> providers = Sets.newHashSet();

   public static void registerProvider(ProviderMetadata provider) {
      providers.add(provider);
   }

   public static void unregisterProvider(ProviderMetadata provider) {
      providers.remove(provider);
   }

   public static Iterable<ProviderMetadata> fromRegistry() {
      return providers;
   }

   public static void clear() {
      providers.clear();
   }
}