AbstractProjectRepositoriesServiceImpl.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.guvnor.common.services.project.backend.server;

import java.util.HashSet;
import java.util.Set;

import org.guvnor.common.services.backend.exceptions.ExceptionUtilities;
import org.guvnor.common.services.backend.util.CommentedOptionFactory;
import org.guvnor.common.services.project.model.MavenRepositoryMetadata;
import org.guvnor.common.services.project.model.Project;
import org.guvnor.common.services.project.model.ProjectRepositories;
import org.guvnor.common.services.project.service.ProjectRepositoriesService;
import org.guvnor.common.services.project.service.ProjectRepositoryResolver;
import org.uberfire.backend.server.util.Paths;
import org.uberfire.backend.vfs.Path;
import org.uberfire.io.IOService;
import org.uberfire.java.nio.file.FileAlreadyExistsException;

public abstract class AbstractProjectRepositoriesServiceImpl<T extends Project>
        implements ProjectRepositoriesService {

    protected IOService ioService;
    protected ProjectRepositoryResolver repositoryResolver;
    protected ProjectRepositoriesContentHandler contentHandler;
    protected CommentedOptionFactory commentedOptionFactory;

    public AbstractProjectRepositoriesServiceImpl() {
        //WELD proxy
    }

    public AbstractProjectRepositoriesServiceImpl( final IOService ioService,
                                                   final ProjectRepositoryResolver repositoryResolver,
                                                   final ProjectRepositoriesContentHandler contentHandler,
                                                   final CommentedOptionFactory commentedOptionFactory ) {
        this.ioService = ioService;
        this.repositoryResolver = repositoryResolver;
        this.contentHandler = contentHandler;
        this.commentedOptionFactory = commentedOptionFactory;
    }

    @Override
    public ProjectRepositories create( final Path path ) {
        final org.uberfire.java.nio.file.Path nioPath = Paths.convert( path );
        if ( ioService.exists( nioPath ) ) {
            throw new FileAlreadyExistsException( path.toString() );
        }

        try {
            ioService.startBatch( nioPath.getFileSystem(),
                                  commentedOptionFactory.makeCommentedOption( "Creating " + path.toString() + "..." ) );

            final T project = getProject( path );
            final Set<MavenRepositoryMetadata> content = new HashSet<MavenRepositoryMetadata>();
            if ( project == null ) {
                content.addAll( repositoryResolver.getRemoteRepositoriesMetaData() );
            } else {
                content.addAll( repositoryResolver.getRemoteRepositoriesMetaData( project ) );
            }

            final ProjectRepositories repositories = createProjectRepositories( content );
            ioService.write( Paths.convert( path ),
                             contentHandler.toString( repositories ) );

            return repositories;

        } finally {
            ioService.endBatch();
        }
    }

    private ProjectRepositories createProjectRepositories( final Set<MavenRepositoryMetadata> content ) {
        final Set<ProjectRepositories.ProjectRepository> projectRepositories = new HashSet<ProjectRepositories.ProjectRepository>();
        for ( MavenRepositoryMetadata md : content ) {
            projectRepositories.add( new ProjectRepositories.ProjectRepository( true,
                                                                                md ) );
        }
        final ProjectRepositories repositories = new ProjectRepositories( projectRepositories );
        return repositories;
    }

    @Override
    public ProjectRepositories load( final Path path ) {
        final org.uberfire.java.nio.file.Path nioPath = Paths.convert( path );
        if ( ioService.exists( nioPath ) ) {
            final String content = ioService.readAllString( nioPath );
            return contentHandler.toModel( content );
        } else {
            return create( path );
        }
    }

    @Override
    public Path save( final Path resource,
                      final ProjectRepositories projectRepositories,
                      final String comment ) {
        try {
            ioService.write( Paths.convert( resource ),
                             contentHandler.toString( projectRepositories ) );
            return resource;

        } catch ( Exception e ) {
            throw ExceptionUtilities.handleException( e );
        }
    }

    protected abstract T getProject( final Path path );

}