/*
* 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.config.external;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Map;
import java.util.Properties;
import org.apache.brooklyn.api.mgmt.ManagementContext;
import org.apache.brooklyn.util.stream.Streams;
/**
* Instances are populated from a plain java properties file named in the passed <code>config</code> map
* under the <code>propertiesUrl</code> key:
*
* <pre>
* brooklyn.external.foo = brooklyn.management.config.external.PropertiesFileExternalConfigSupplier
* brooklyn.external.foo.propertiesUrl = http://brooklyn.example.com/config/foo.properties
* </pre>
*/
public class PropertiesFileExternalConfigSupplier extends AbstractExternalConfigSupplier {
public static final String PROPERTIES_URL = "propertiesUrl";
private final Properties properties;
public PropertiesFileExternalConfigSupplier(ManagementContext managementContext, String name, Map<String, String> config) throws IOException {
super(managementContext, name);
this.properties = loadProperties(config.get(PROPERTIES_URL));
}
public String get(String key) {
return properties.getProperty(key);
}
private static Properties loadProperties(String propertiesUrl) throws IOException {
InputStream is = null;
try {
is = new URL(propertiesUrl).openStream();
Properties p = new Properties();
p.load(is);
return p;
} finally {
Streams.closeQuietly(is);
}
}
}