111 lines
3.9 KiB
Java
111 lines
3.9 KiB
Java
package org.gcube.application.geoportal.service.engine.providers;
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import lombok.extern.slf4j.Slf4j;
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import org.gcube.application.cms.plugins.InitializablePlugin;
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import org.gcube.application.cms.plugins.Plugin;
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import org.gcube.application.cms.plugins.faults.InitializationException;
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import org.gcube.application.cms.plugins.faults.ShutDownException;
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import org.gcube.application.cms.plugins.reports.InitializationReport;
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import org.gcube.application.geoportal.common.utils.ContextUtils;
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import org.gcube.application.geoportal.service.model.internal.faults.ConfigurationException;
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import org.reflections.Reflections;
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import org.reflections.util.ConfigurationBuilder;
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import org.reflections.util.FilterBuilder;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.ServiceLoader;
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@Slf4j
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public class PluginManager extends AbstractScopedMap<Map<String, Plugin>>{
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Map<String,Plugin> implementations=new HashMap<>();
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public PluginManager(){
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super("Plugin Cache");
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// reflections
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Reflections reflections = new Reflections(
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new ConfigurationBuilder()
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.forPackage("org.gcube.application.cms")
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.filterInputsBy(new FilterBuilder().includePackage("org.gcube.application.cms")));
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reflections.getSubTypesOf(Plugin.class).iterator().forEachRemaining(pluginClass->{
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if(!pluginClass.isInterface()){
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try {
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Plugin plugin = pluginClass.newInstance();
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log.debug("Loading {} descriptiorn : ", plugin, plugin.getDescriptor());
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implementations.put(plugin.getDescriptor().getId(), plugin);
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}catch (Throwable t){
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log.warn("Unable to instantiate Plugin "+pluginClass,t);
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}
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}
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});
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log.info("Loaded {} plugins",implementations.keySet().size());
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// Init plugins
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implementations.forEach((id,p)->{
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if(p instanceof InitializablePlugin){
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log.info("INIT Plugin {}",id);
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try {
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InitializablePlugin ip=(InitializablePlugin) p;
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InitializationReport rep=ip.init();
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log.info("INIT REPORT : {}",rep);
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}catch (InitializationException e){
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log.error("Failed to initialize "+id,e);
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}catch(Throwable t){
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log.error("Unable to initialize "+id,t);
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}
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}
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});
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}
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@Override
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protected Map<String, Plugin> retrieveObject() throws ConfigurationException {
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// Init plugins
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implementations.forEach((id,p)->{
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if(p instanceof InitializablePlugin){
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log.info("INIT Plugin {} in context {} ",id, ContextUtils.getCurrentScope());
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try {
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InitializablePlugin ip=(InitializablePlugin) p;
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InitializationReport rep=ip.initInContext();
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log.info("INIT REPORT : {}",rep);
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}catch (InitializationException e){
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log.error("Failed to initialize "+id,e);
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}catch(Throwable t){
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log.error("Unable to initialize "+id,t);
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}
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}
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});
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return implementations;
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}
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@Override
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protected void dispose(Map<String, Plugin> toDispose) {
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// ShutDown plugins
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implementations.forEach((id,p)->{
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if(p instanceof InitializablePlugin){
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log.info("Shutting down Plugin {}",id);
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try {
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InitializablePlugin ip=(InitializablePlugin) p;
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ip.shutdown();
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}catch (ShutDownException e){
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log.error("Failed to shutdown "+id,e);
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}catch(Throwable t){
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log.error("Unable to shutdown "+id,t);
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}
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}
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});
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}
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@Override
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public void init() {
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}
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}
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