/*
* Copyright 2012 JBoss Inc
*
* 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.drools.workbench.screens.dsltext.backend.server;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.event.Event;
import javax.inject.Inject;
import javax.inject.Named;
import org.drools.compiler.lang.dsl.DSLMappingParseException;
import org.drools.compiler.lang.dsl.DSLTokenizedMappingFile;
import org.drools.workbench.screens.dsltext.service.DSLTextEditorService;
import org.drools.workbench.screens.dsltext.type.DSLResourceTypeDefinition;
import org.guvnor.common.services.backend.exceptions.ExceptionUtilities;
import org.guvnor.common.services.project.builder.events.InvalidateDMOPackageCacheEvent;
import org.guvnor.common.services.shared.file.CopyService;
import org.guvnor.common.services.shared.file.DeleteService;
import org.guvnor.common.services.shared.file.RenameService;
import org.guvnor.common.services.shared.metadata.MetadataService;
import org.guvnor.common.services.shared.metadata.model.Metadata;
import org.guvnor.common.services.shared.validation.model.ValidationMessage;
import org.jboss.errai.bus.server.annotations.Service;
import org.uberfire.io.IOService;
import org.uberfire.java.nio.base.options.CommentedOption;
import org.uberfire.backend.server.util.Paths;
import org.uberfire.backend.vfs.Path;
import org.uberfire.java.nio.file.FileAlreadyExistsException;
import org.uberfire.rpc.SessionInfo;
import org.uberfire.security.Identity;
import org.uberfire.workbench.events.ResourceOpenedEvent;
@Service
@ApplicationScoped
public class DSLTextEditorServiceImpl implements DSLTextEditorService {
@Inject
@Named("ioStrategy")
private IOService ioService;
@Inject
private MetadataService metadataService;
@Inject
private CopyService copyService;
@Inject
private DeleteService deleteService;
@Inject
private RenameService renameService;
@Inject
private Event<InvalidateDMOPackageCacheEvent> invalidateDMOPackageCache;
@Inject
private Event<ResourceOpenedEvent> resourceOpenedEvent;
@Inject
private Identity identity;
@Inject
private SessionInfo sessionInfo;
@Inject
private DSLResourceTypeDefinition resourceTypeDefinition;
@Override
public Path create( final Path context,
final String fileName,
final String content,
final String comment ) {
try {
final org.uberfire.java.nio.file.Path nioPath = Paths.convert( context ).resolve( fileName );
final Path newPath = Paths.convert( nioPath );
if ( ioService.exists( nioPath ) ) {
throw new FileAlreadyExistsException( nioPath.toString() );
}
ioService.write( nioPath,
content,
makeCommentedOption( comment ) );
return newPath;
} catch ( Exception e ) {
throw ExceptionUtilities.handleException( e );
}
}
@Override
public String load( final Path path ) {
try {
final String content = ioService.readAllString( Paths.convert( path ) );
//Signal opening to interested parties
resourceOpenedEvent.fire( new ResourceOpenedEvent( path,
sessionInfo ) );
return content;
} catch ( Exception e ) {
throw ExceptionUtilities.handleException( e );
}
}
@Override
public Path save( final Path resource,
final String content,
final Metadata metadata,
final String comment ) {
try {
ioService.write( Paths.convert( resource ),
content,
metadataService.setUpAttributes( resource,
metadata ),
makeCommentedOption( comment ) );
//Invalidate Package-level DMO cache as a DSL has been altered
invalidateDMOPackageCache.fire( new InvalidateDMOPackageCacheEvent( resource ) );
return resource;
} catch ( Exception e ) {
throw ExceptionUtilities.handleException( e );
}
}
@Override
public void delete( final Path path,
final String comment ) {
try {
deleteService.delete( path,
comment );
} catch ( Exception e ) {
throw ExceptionUtilities.handleException( e );
}
}
@Override
public Path rename( final Path path,
final String newName,
final String comment ) {
try {
return renameService.rename( path,
newName,
comment );
} catch ( Exception e ) {
throw ExceptionUtilities.handleException( e );
}
}
@Override
public Path copy( final Path path,
final String newName,
final String comment ) {
try {
return copyService.copy( path,
newName,
comment );
} catch ( Exception e ) {
throw ExceptionUtilities.handleException( e );
}
}
@Override
public boolean accepts( final Path path ) {
return resourceTypeDefinition.accept( path );
}
@Override
public List<ValidationMessage> validate( final Path path ) {
try {
final String content = ioService.readAllString( Paths.convert( path ) );
return validate( path,
content );
} catch ( Exception e ) {
throw ExceptionUtilities.handleException( e );
}
}
@Override
public List<ValidationMessage> validate( final Path path,
final String content ) {
return doValidation( content );
}
private List<ValidationMessage> doValidation( final String content ) {
final List<ValidationMessage> validationMessages = new ArrayList<ValidationMessage>();
final DSLTokenizedMappingFile dslLoader = new DSLTokenizedMappingFile();
try {
if ( !dslLoader.parseAndLoad( new StringReader( content ) ) ) {
validationMessages.addAll( makeValidationMessages( dslLoader ) );
}
return validationMessages;
} catch ( IOException e ) {
throw ExceptionUtilities.handleException( e );
}
}
private List<ValidationMessage> makeValidationMessages( final DSLTokenizedMappingFile dslLoader ) {
final List<ValidationMessage> messages = new ArrayList<ValidationMessage>();
for ( final Object o : dslLoader.getErrors() ) {
if ( o instanceof DSLMappingParseException ) {
final DSLMappingParseException dslMappingParseException = (DSLMappingParseException) o;
messages.add( makeNewValidationMessage( dslMappingParseException ) );
} else if ( o instanceof Exception ) {
final Exception e = (Exception) o;
messages.add( makeNewValidationMessage( e ) );
} else {
messages.add( makeNewValidationMessage( o ) );
}
}
return messages;
}
private ValidationMessage makeNewValidationMessage( final DSLMappingParseException e ) {
final ValidationMessage msg = new ValidationMessage();
msg.setLevel( ValidationMessage.Level.ERROR );
msg.setLine( e.getLine() );
msg.setText( e.getMessage() );
return msg;
}
private ValidationMessage makeNewValidationMessage( final Exception e ) {
final ValidationMessage msg = new ValidationMessage();
msg.setLevel( ValidationMessage.Level.ERROR );
msg.setText( "Exception " + e.getClass() + " " + e.getMessage() + " " + e.getCause() );
return msg;
}
private ValidationMessage makeNewValidationMessage( final Object o ) {
final ValidationMessage msg = new ValidationMessage();
msg.setLevel( ValidationMessage.Level.ERROR );
msg.setText( "Uncategorized error " + o );
return msg;
}
private CommentedOption makeCommentedOption( final String commitMessage ) {
final String name = identity.getName();
final Date when = new Date();
final CommentedOption co = new CommentedOption( sessionInfo.getId(),
name,
null,
commitMessage,
when );
return co;
}
}