/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.runtime.container.internal;
import static java.util.stream.Collectors.toList;
import static org.mule.runtime.api.util.Preconditions.checkArgument;
import org.mule.runtime.container.api.ModuleRepository;
import org.mule.runtime.container.api.MuleModule;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Defines a {@link ModuleRepository} that uses a {@link ModuleDiscoverer} to find the available
* modules.
*/
public class DefaultModuleRepository implements ModuleRepository {
protected static final Logger logger = LoggerFactory.getLogger(DefaultModuleRepository.class);
private final ModuleDiscoverer moduleDiscoverer;
private List<MuleModule> modules;
/**
* Creates a new repository
*
* @param moduleDiscoverer used to discover available modules. Non null.
*/
public DefaultModuleRepository(ModuleDiscoverer moduleDiscoverer) {
checkArgument(moduleDiscoverer != null, "moduleDiscoverer cannot be null");
this.moduleDiscoverer = moduleDiscoverer;
}
@Override
public List<MuleModule> getModules() {
if (modules == null) {
synchronized (this) {
if (modules == null) {
modules = discoverModules();
if (logger.isDebugEnabled()) {
logger.debug("Found {} modules: ", modules.size(), modules.stream().map(m -> m.getName()).collect(toList()));
}
}
}
}
return modules;
}
protected List<MuleModule> discoverModules() {
return moduleDiscoverer.discover();
}
}