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/*
* 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 stockquote;
import java.util.Dictionary;
import java.util.Hashtable;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.cm.Configuration;
import org.osgi.service.cm.ConfigurationAdmin;
import org.osoa.sca.annotations.Property;
/**
*
* Stock quote with configurable properties.
*
*/
public class OSGiStockQuoteImpl implements StockQuote, BundleActivator {
public String pid;
@Property
public double exchangeRate;
private String currency;
private BundleContext bundleContext;
public OSGiStockQuoteImpl() {
this.pid = "stockQuote";
}
protected OSGiStockQuoteImpl(BundleContext bc) {
this.bundleContext = bc;
}
@Property
public void setCurrency(String currency) {
this.currency = currency;
}
private void checkProperties() throws Exception {
if (exchangeRate == 2.0 && !"USD".equals(currency)) {
throw new RuntimeException("Property exchangeRate not set correctly, exchangeRate= " +
exchangeRate + " currency=" + currency);
}
if (exchangeRate == 1.48 && !"EURO".equals(currency)) {
throw new RuntimeException("Property exchangeRate not set correctly, exchangeRate= " +
exchangeRate + " currency=" + currency);
}
ServiceReference configAdminReference = bundleContext.getServiceReference("org.osgi.service.cm.ConfigurationAdmin");
if (configAdminReference != null && pid != null ) {
ConfigurationAdmin cm = (ConfigurationAdmin)bundleContext.getService(configAdminReference);
Configuration config = cm.getConfiguration("stockQuote", null);
Dictionary props = config.getProperties();
if (exchangeRate != (double)(Double)props.get("exchangeRate")) {
throw new Exception("Config Property exchangeRate not set correctly, expected "
+ props.get("exchangeRate") + " got " + exchangeRate);
}
if (!currency.equals(props.get("currency"))) {
throw new Exception("Config Property currency not set correctly, expected "
+ props.get("currency") + " got " + currency);
}
}
}
public double getQuote(String ticker) throws Exception {
checkProperties();
return 52.81 * exchangeRate;
}
public void start(BundleContext bc) throws Exception {
bundleContext = bc;
Hashtable<String, Object> props = new Hashtable<String, Object>();
props.put("service.pid", "stockQuote");
bc.registerService(StockQuote.class.getName(), this, props);
}
public void stop(BundleContext bc) throws Exception {
}
}
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