com.openmeap.model.event.handler.ArchiveFileUploadHandler.java Source code

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Here is the source code for com.openmeap.model.event.handler.ArchiveFileUploadHandler.java

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/*
 ###############################################################################
 #                                                                             #
 #    Copyright (C) 2011-2012 OpenMEAP, Inc.                                   #
 #    Credits to Jonathan Schang & Robert Thacher                              #
 #                                                                             #
 #    Released under the LGPLv3                                                #
 #                                                                             #
 #    OpenMEAP is free software: you can redistribute it and/or modify         #
 #    it under the terms of the GNU Lesser General Public License as published #
 #    by the Free Software Foundation, either version 3 of the License, or     #
 #    (at your option) any later version.                                      #
 #                                                                             #
 #    OpenMEAP is distributed in the hope that it will be useful,              #
 #    but WITHOUT ANY WARRANTY; without even the implied warranty of           #
 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            #
 #    GNU Lesser General Public License for more details.                      #
 #                                                                             #
 #    You should have received a copy of the GNU Lesser General Public License #
 #    along with OpenMEAP.  If not, see <http://www.gnu.org/licenses/>.        #
 #                                                                             #
 ###############################################################################
 */

package com.openmeap.model.event.handler;

import java.io.File;
import java.lang.reflect.Method;
import java.util.Map;

import org.apache.commons.fileupload.FileItem;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.openmeap.cluster.ClusterHandlingException;
import com.openmeap.event.Event;
import com.openmeap.event.EventHandler;
import com.openmeap.model.InvalidPropertiesException;
import com.openmeap.model.ModelManager;
import com.openmeap.model.dto.ApplicationArchive;
import com.openmeap.model.dto.ClusterNode;
import com.openmeap.model.dto.GlobalSettings;

public class ArchiveFileUploadHandler implements EventHandler<Map> {

    private Logger logger = LoggerFactory.getLogger(ArchiveFileUploadHandler.class);

    private ModelManager modelManager;
    private String fileSystemStoragePathPrefix;

    @Override
    public <E extends Event<Map>> void handle(E event) throws ClusterHandlingException {

        Map parms = event.getPayload();
        ApplicationArchive arch = (ApplicationArchive) parms.get("archive");

        String hashId = String.format("{%s}%s", arch.getHashAlgorithm(), arch.getHash());

        logger.debug("ArchiveUploadEvent for file {}", hashId);

        File file = arch.getFile(getFileSystemStoragePathPrefix());

        if (file.exists()) {
            logger.warn("ApplicationArchive with {} hash already exists, ignoring ArchiveUploadEvent.", hashId);
            return;
        }

        if (parms.get("file") == null || !(parms.get("file") instanceof FileItem)) {
            logger.error(
                    "Expected a FileItem under the \"file\" parameter.  Got " + parms.get("file") + " instead.");
            throw new ClusterHandlingException(
                    "Expected a FileItem under the \"file\" parameter.  Got " + parms.get("file") + " instead.");
        }

        FileItem item = (FileItem) parms.get("file");
        try {
            item.write(file);
        } catch (Exception ioe) {
            logger.error("An error occurred writing {}: {}", item.getName(), ioe);
            throw new ClusterHandlingException(ioe);
        }
        item.delete();
    }

    // ACCESSORS

    public void setModelManager(ModelManager modelManager) {
        this.modelManager = modelManager;
    }

    public ModelManager getModelManager() {
        return modelManager;
    }

    public String getFileSystemStoragePathPrefix() {
        return fileSystemStoragePathPrefix;
    }

    public void setFileSystemStoragePathPrefix(String fileSystemStoragePathPrefix) {
        this.fileSystemStoragePathPrefix = fileSystemStoragePathPrefix;
    }

}