/*!
* Copyright 2010 - 2015 Pentaho Corporation. All rights reserved.
*
* 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 com.pentaho.di.purge;
import static javax.ws.rs.core.MediaType.WILDCARD;
import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;
import java.util.Date;
import javax.ws.rs.Consumes;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import org.apache.log4j.Level;
import org.codehaus.enunciate.jaxrs.ResponseCode;
import org.codehaus.enunciate.jaxrs.StatusCodes;
import org.pentaho.di.ui.repository.pur.services.IPurgeService;
import org.pentaho.platform.api.repository2.unified.IUnifiedRepository;
import org.pentaho.platform.util.RepositoryPathEncoder;
import com.sun.jersey.multipart.FormDataParam;
/**
* Created by tkafalas 7/14/14.
*/
@Path( "/pur-repository-plugin/api/purge" )
public class PurgeResource {
public static final String PATH_SEPARATOR = "/"; //$NON-NLS-1$
IUnifiedRepository repository;
public PurgeResource( IUnifiedRepository unifiedRepository ) {
this.repository = unifiedRepository;
}
/**
* Provides a utility for purging files and/or revision history for the DI server.
*
* <p>
* <b>Example Request:</b><br>
* POST /pur-repository-plugin/api/purge/path:to:file/purge
* </p>
*
* @param pathId
* Colon separated path for the repository file. Processing of files will occur under this path. Exception:
* If purgeSharedObject=true other files may be affected as well.
* @param purgeFiles
* If true, files will be purged completely. This options erases files and all history. This effectively
* disables all parameters effecting revisions since all revisions will be deleted unconditionally.
* @param purgeRevisions
* If true, all revisions to the targeted files will be purged. The current state of the file will be
* retained.
* @param purgeSharedObjects
* If true, Shared objects will also be targeted by the purge operation. This does not replace the pathId and
* fileFilter processing, but rather, is in addition to that processing. If it is desired to purge shared
* objects only without effecting other files, then set the pathId to a single space character. Some examples
* of shared objects database connections, Slave Servers, Cluster Schemas, and partition Schemas.
* @param versionCount
* If present, the number of historical revisions to keep. If there are more revisions for a file than
* versionCount, the older ones will be removed.
* @param purgeBeforeDate
* If set, remove all version history created prior to this date.
* @param fileFilter
* The file filter to be applied when determining what files are affected by the purge. This filter is used
* by the <code>tree</code> endpoint to determine what files to return. The fileFilter is a list of allowed
* names of files separated by the pipe (|) character. Each file name in the filter may be a full name or a
* partial name with one or more wildcard characters ("*"). (eg: *.ktr|*.kjb returns all files with a ktr or
* kjb extension).
* @param logLevelName
* The standard name for the log level (ie: INFO, DEBUG)
* @return A text file containing a log of the service execution.
*/
@POST
@Path( "{pathId : .+}/purge" )
@StatusCodes( { @ResponseCode( code = 200, condition = "Successfully purged specified target" ),
@ResponseCode( code = 500, condition = "Something failed when attempting to purge " ),
@ResponseCode( code = 404, condition = "Invalid path" ) } )
@Consumes( MediaType.MULTIPART_FORM_DATA )
@Produces( { WILDCARD } )
public Response doDeleteRevisions( @PathParam( "pathId" ) String pathId,
@DefaultValue( "false" ) @FormDataParam( "purgeFiles" ) boolean purgeFiles,
@DefaultValue( "false" ) @FormDataParam( "purgeRevisions" ) boolean purgeRevisions,
@DefaultValue( "false" ) @FormDataParam( "purgeSharedObjects" ) boolean purgeSharedObjects,
@DefaultValue( "-1" ) @FormDataParam( "versionCount" ) int versionCount,
@FormDataParam( "purgeBeforeDate" ) Date purgeBeforeDate,
@DefaultValue( "*" ) @FormDataParam( "fileFilter" ) String fileFilter,
@DefaultValue( "INFO" ) @FormDataParam( "logLevel" ) String logLevelName ) {
// A version count of 0 is illegal.
if ( versionCount == 0 ) {
return Response.serverError().build();
}
if ( purgeRevisions && ( versionCount > 0 || purgeBeforeDate != null ) ) {
purgeRevisions = false;
}
IPurgeService purgeService = new UnifiedRepositoryPurgeService( this.repository );
Level logLevel = Level.toLevel( logLevelName );
PurgeUtilitySpecification purgeSpecification = new PurgeUtilitySpecification();
purgeSpecification.setPath( idToPath( pathId ) );
purgeSpecification.setPurgeFiles( purgeFiles );
purgeSpecification.setPurgeRevisions( purgeRevisions );
purgeSpecification.setSharedObjects( purgeSharedObjects );
purgeSpecification.setVersionCount( versionCount );
purgeSpecification.setBeforeDate( purgeBeforeDate );
purgeSpecification.setFileFilter( fileFilter );
purgeSpecification.setLogLevel( logLevel );
// Initialize the logger
ByteArrayOutputStream purgeUtilityStream = new ByteArrayOutputStream();
PurgeUtilityLogger.createNewInstance( purgeUtilityStream, purgeSpecification.getPath(), logLevel );
try {
purgeService.doDeleteRevisions( purgeSpecification );
} catch ( Exception e ) {
PurgeUtilityLogger.getPurgeUtilityLogger().error( e );
return Response.ok( encodeOutput( purgeUtilityStream ), MediaType.TEXT_HTML ).build();
}
return Response.ok( encodeOutput( purgeUtilityStream ), MediaType.TEXT_HTML ).build();
}
public static String idToPath( String pathId ) {
String path = pathId;
path = RepositoryPathEncoder.decodeRepositoryPath( path );
if ( path == null || path.trim().isEmpty() ) {
path = "";
} else {
if ( !path.startsWith( PATH_SEPARATOR ) ) {
path = PATH_SEPARATOR + path;
}
}
return path;
}
private String encodeOutput( ByteArrayOutputStream purgeUtilityStream ) {
String responseBody = null;
try {
responseBody = purgeUtilityStream.toString( "UTF-8" );
} catch ( UnsupportedEncodingException e ) {
responseBody = purgeUtilityStream.toString();
}
return responseBody;
}
}