/*
* 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.apache.brooklyn.core.mgmt.internal;
import org.apache.brooklyn.core.config.external.ExternalConfigSupplier;
import com.google.common.annotations.Beta;
/**
* Permits a number of {@link ExternalConfigSupplier} instances to be registered, each with a unique name, for future
* (deferred) lookup of configuration values.
*
* @since 0.8.0
*/
@Beta
public interface ExternalConfigSupplierRegistry {
void addProvider(String name, ExternalConfigSupplier provider);
void removeProvider(String name);
/**
* Searches the named {@link ExternalConfigSupplier} for the config value associated with the specified key.
* Quietly returns <code>null</code> if no config exists for the specified key.
* Throws {@link IllegalArgumentException} if no {@link ExternalConfigSupplier} exists for the passed name.
*/
public String getConfig(String providerName, String key);
}