RepositoryFactoryImpl.java

/*
 * Copyright 2015 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.
 * 
 *      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.guvnor.structure.backend.repositories;

import java.util.List;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Any;
import javax.enterprise.inject.Instance;
import javax.enterprise.inject.Produces;
import javax.inject.Inject;
import javax.inject.Named;

import org.guvnor.structure.backend.backcompat.BackwardCompatibleUtil;
import org.guvnor.structure.repositories.EnvironmentParameters;
import org.guvnor.structure.repositories.Repository;
import org.guvnor.structure.server.config.ConfigGroup;
import org.guvnor.structure.server.config.ConfigItem;
import org.guvnor.structure.server.config.PasswordService;
import org.guvnor.structure.server.repositories.RepositoryFactory;
import org.guvnor.structure.server.repositories.RepositoryFactoryHelper;

import static org.guvnor.structure.backend.repositories.SystemRepository.*;
import static org.uberfire.commons.validation.Preconditions.*;

@ApplicationScoped
public class RepositoryFactoryImpl implements RepositoryFactory {

    @Inject
    private PasswordService secureService;

    @Inject
    @Any
    private Instance<RepositoryFactoryHelper> helpers;

    @Inject
    private BackwardCompatibleUtil backward;

    @Override
    public Repository newRepository( final ConfigGroup repoConfig ) {
        checkNotNull( "repoConfig", repoConfig );
        final ConfigItem<String> schemeConfigItem = repoConfig.getConfigItem( EnvironmentParameters.SCHEME );
        checkNotNull( "schemeConfigItem", schemeConfigItem );

        //Find a Helper that can create a repository
        Repository repository = null;
        for ( RepositoryFactoryHelper helper : helpers ) {
            if ( helper.accept( repoConfig ) ) {
                repository = helper.newRepository( repoConfig );
                break;
            }
        }

        //Check one was created
        if ( repository == null ) {
            throw new IllegalArgumentException( "Unrecognized scheme '" + schemeConfigItem.getValue() + "'." );
        }

        //Copy in Security Roles required to access this resource
        ConfigItem<List<String>> groups = backward.compat( repoConfig ).getConfigItem( "security:groups" );
        if ( groups != null ) {
            for ( String group : groups.getValue() ) {
                repository.getGroups().add( group );
            }
        }

        return repository;
    }

    @Produces
    @Named("system")
    public Repository systemRepository() {
        return SYSTEM_REPO;
    }

}