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package org.onap.ccsdk.sli.core.sli.provider;
import java.util.HashMap;
import org.onap.ccsdk.sli.core.sli.SvcLogicAdaptor;
import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;
import org.onap.ccsdk.sli.core.sli.SvcLogicRecorder;
import org.onap.ccsdk.sli.core.sli.SvcLogicResource;
import org.onap.ccsdk.sli.core.sli.provider.base.SvcLogicResolver;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.ServiceReference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SvcLogicClassResolver implements SvcLogicResolver {
private static final Logger LOG = LoggerFactory.getLogger(SvcLogicClassResolver.class);
private static HashMap<String, SvcLogicAdaptor> adaptorMap = new HashMap<>();
public void registerAdaptor(SvcLogicAdaptor adaptor) {
String name = adaptor.getClass().getName();
LOG.info("Registering adaptor " + name);
adaptorMap.put(name, adaptor);
}
public void unregisterAdaptor(String name) {
if (adaptorMap.containsKey(name)) {
LOG.info("Unregistering " + name);
adaptorMap.remove(name);
}
}
private SvcLogicAdaptor getAdaptorInstance(String name) {
if (adaptorMap.containsKey(name)) {
return adaptorMap.get(name);
} else {
SvcLogicAdaptor adaptor = (SvcLogicAdaptor) resolve(name);
if (adaptor != null) {
registerAdaptor(adaptor);
}
return adaptor;
}
}
private Object resolve(String className) {
Bundle bundle = FrameworkUtil.getBundle(SvcLogicClassResolver.class);
if (bundle == null) {
// Running outside OSGi container (e.g. jUnit). Use Reflection
// to resolve class
try {
return (Class.forName(className).newInstance());
} catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) {
LOG.error("Could not resolve class " + className, e);
return null;
}
} else {
BundleContext bctx = bundle.getBundleContext();
ServiceReference sref = bctx.getServiceReference(className);
if (sref != null) {
return bctx.getService(sref);
} else {
LOG.warn("Could not find service reference object for class " + className);
return null;
}
}
}
@Override
public SvcLogicResource getSvcLogicResource(String resourceName) {
return (SvcLogicResource) resolve(resourceName);
}
@Override
public SvcLogicRecorder getSvcLogicRecorder(String recorderName) {
return (SvcLogicRecorder) resolve(recorderName);
}
@Override
public SvcLogicJavaPlugin getSvcLogicJavaPlugin(String pluginName) {
return (SvcLogicJavaPlugin) resolve(pluginName);
}
@Override
public SvcLogicAdaptor getSvcLogicAdaptor(String adaptorName) {
return getAdaptorInstance(adaptorName);
}
}
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