DefaultApplicationScopedProducer.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed 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.kie.workbench.screens.workbench.backend.impl;

import javax.annotation.PostConstruct;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.context.RequestScoped;
import javax.enterprise.inject.Default;
import javax.enterprise.inject.Produces;
import javax.inject.Inject;
import javax.inject.Named;

import org.guvnor.common.services.backend.metadata.attribute.OtherMetaView;
import org.guvnor.messageconsole.backend.DefaultIndexEngineObserver;
import org.jboss.errai.security.shared.api.identity.User;
import org.jboss.errai.security.shared.api.identity.UserImpl;
import org.jboss.errai.security.shared.service.AuthenticationService;
import org.kie.workbench.screens.workbench.backend.ApplicationScopedProducer;
import org.uberfire.backend.server.IOWatchServiceNonDotImpl;
import org.uberfire.commons.cluster.ClusterServiceFactory;
import org.uberfire.commons.services.cdi.Startup;
import org.uberfire.commons.services.cdi.StartupType;
import org.uberfire.ext.metadata.backend.lucene.LuceneConfig;
import org.uberfire.ext.metadata.io.IOSearchServiceImpl;
import org.uberfire.ext.metadata.io.IOServiceIndexedImpl;
import org.uberfire.ext.metadata.search.IOSearchService;
import org.uberfire.io.IOService;
import org.uberfire.io.attribute.DublinCoreView;
import org.uberfire.io.impl.cluster.IOServiceClusterImpl;
import org.uberfire.java.nio.base.version.VersionAttributeView;
import org.uberfire.security.authz.AuthorizationManager;

/**
 * This class contains all default ApplicationScoped producers
 * required by the application, and can be replaced by using CDI alternatives.
 */
@Startup(value = StartupType.BOOTSTRAP, priority = -1)
@ApplicationScoped
public class DefaultApplicationScopedProducer implements ApplicationScopedProducer {

    private IOService ioService;
    private IOSearchService ioSearchService;

    @Inject
    @Named("luceneConfig")
    private LuceneConfig config;

    @Inject
    @Named("clusterServiceFactory")
    private ClusterServiceFactory clusterServiceFactory;

    @Inject
    private IOWatchServiceNonDotImpl watchService;

    @Inject
    private AuthenticationService authenticationService;

    @Inject
    private DefaultIndexEngineObserver defaultIndexEngineObserver;

    public DefaultApplicationScopedProducer() {
        if ( System.getProperty( "org.uberfire.watcher.autostart" ) == null ) {
            System.setProperty( "org.uberfire.watcher.autostart", "false" );
        }

        if ( System.getProperty( "org.kie.deployment.desc.location" ) == null ) {
            System.setProperty( "org.kie.deployment.desc.location", "classpath:META-INF/kie-wb-deployment-descriptor.xml" );
        }
    }

    @PostConstruct
    public void setup() {
        final IOService service = new IOServiceIndexedImpl( watchService,
                                                            config.getIndexEngine(),
                                                            defaultIndexEngineObserver,
                                                            DublinCoreView.class,
                                                            VersionAttributeView.class,
                                                            OtherMetaView.class );

        if ( clusterServiceFactory == null ) {
            ioService = service;
        } else {
            ioService = new IOServiceClusterImpl( service,
                                                  clusterServiceFactory,
                                                  false );
        }

        this.ioSearchService = new IOSearchServiceImpl( config.getSearchIndex(),
                                                        ioService );
    }

    @Produces
    @Named("ioStrategy")
    public IOService ioService() {
        return ioService;
    }

    @Produces
    @Named("ioSearchStrategy")
    public IOSearchService ioSearchService() {
        return ioSearchService;
    }

    @Produces
    @RequestScoped
    public User getIdentity() {
        try {
            return authenticationService.getUser();
        } catch ( final IllegalStateException ex ) {
            return new UserImpl( "system" );
        }
    }

}