org.eclipse.dirigible.runtime.registry.RepositoryServlet.java Source code

Introduction

Here is the source code for org.eclipse.dirigible.runtime.registry.RepositoryServlet.java

Source

/*******************************************************************************
 * Copyright (c) 2015 SAP and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * Contributors:
 * SAP - initial API and implementation
 *******************************************************************************/

package org.eclipse.dirigible.runtime.registry;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.MissingResourceException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.IOUtils;
import org.eclipse.dirigible.repository.api.ContentTypeHelper;
import org.eclipse.dirigible.repository.api.ICollection;
import org.eclipse.dirigible.repository.api.IEntity;
import org.eclipse.dirigible.repository.api.IResource;
import org.eclipse.dirigible.repository.logging.Logger;

/**
 * Repository Service gives full access to the Dirigible Repository API.
 */
public class RepositoryServlet extends RegistryServlet {

    private static final String REQUEST_PROCESSING_FAILED_S = Messages
            .getString("RepositoryServlet.REQUEST_PROCESSING_FAILED_S"); //$NON-NLS-1$

    private static final String THERE_IS_AN_EXISTING_COLLECTION_AT_THE_SAME_LOCATION = Messages
            .getString("RepositoryServlet.THERE_IS_AN_EXISTING_COLLECTION_AT_THE_SAME_LOCATION"); //$NON-NLS-1$

    private static final String THERE_IS_AN_EXISTING_RESOURCE_AT_THE_SAME_LOCATION_USE_PUT_METHOD_FOR_UPDATE = Messages
            .getString(
                    "RepositoryServlet.THERE_IS_AN_EXISTING_RESOURCE_AT_THE_SAME_LOCATION_USE_PUT_METHOD_FOR_UPDATE"); //$NON-NLS-1$

    private static final long serialVersionUID = 726309327921007381L;

    private static final Logger logger = Logger.getLogger(RepositoryServlet.class);

    @Override
    protected String getRepositoryPathPrefix(HttpServletRequest req) {
        return "";
    }

    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        super.doGet(request, response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String repositoryPath = null;
        final OutputStream out = response.getOutputStream();
        try {
            repositoryPath = extractRepositoryPath(request);
            IEntity entity = getEntity(repositoryPath, request);
            byte[] data;
            if (entity == null) {
                ByteArrayOutputStream buff = new ByteArrayOutputStream();
                IOUtils.copy(request.getInputStream(), buff);
                data = buff.toByteArray();
                String contentType = request.getContentType();
                if (contentType == null) {
                    contentType = "text/plain"; //$NON-NLS-1$
                }
                boolean isBinary = ContentTypeHelper.isBinary(contentType);
                getRepository(request).createResource(repositoryPath, data, isBinary, contentType);
            } else {
                if (entity instanceof IResource) {
                    response.sendError(HttpServletResponse.SC_BAD_REQUEST,
                            THERE_IS_AN_EXISTING_RESOURCE_AT_THE_SAME_LOCATION_USE_PUT_METHOD_FOR_UPDATE);
                } else if (entity instanceof ICollection) {
                    response.sendError(HttpServletResponse.SC_BAD_REQUEST,
                            THERE_IS_AN_EXISTING_COLLECTION_AT_THE_SAME_LOCATION);
                }
            }
        } catch (IllegalArgumentException ex) {
            logger.error(String.format(REQUEST_PROCESSING_FAILED_S, repositoryPath) + ex.getMessage(), ex);
            response.sendError(HttpServletResponse.SC_BAD_REQUEST, ex.getMessage());
        } catch (MissingResourceException ex) {
            logger.error(String.format(REQUEST_PROCESSING_FAILED_S, repositoryPath) + ex.getMessage(), ex);
            response.sendError(HttpServletResponse.SC_NO_CONTENT, ex.getMessage());
        } finally {
            out.flush();
            out.close();
        }

    }

    @Override
    protected void doPut(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String repositoryPath = null;
        final OutputStream out = response.getOutputStream();
        try {
            repositoryPath = extractRepositoryPath(request);
            IEntity entity = getEntity(repositoryPath, request);
            if (entity == null) {
                doPost(request, response);
            } else {
                if (entity instanceof IResource) {
                    ByteArrayOutputStream buff = new ByteArrayOutputStream();
                    IOUtils.copy(request.getInputStream(), buff);
                    byte[] data = buff.toByteArray();
                    IResource resource = (IResource) entity;
                    resource.setContent(data);
                } else {
                    response.sendError(HttpServletResponse.SC_BAD_REQUEST,
                            THERE_IS_AN_EXISTING_COLLECTION_AT_THE_SAME_LOCATION);
                }
            }
        } catch (IllegalArgumentException ex) {
            logger.error(String.format(REQUEST_PROCESSING_FAILED_S, repositoryPath) + ex.getMessage(), ex);
            response.sendError(HttpServletResponse.SC_BAD_REQUEST, ex.getMessage());
        } catch (MissingResourceException ex) {
            logger.error(String.format(REQUEST_PROCESSING_FAILED_S, repositoryPath) + ex.getMessage(), ex);
            response.sendError(HttpServletResponse.SC_NO_CONTENT, ex.getMessage());
        } finally {
            out.flush();
            out.close();
        }
    }

    @Override
    protected void doDelete(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String repositoryPath = null;
        final OutputStream out = response.getOutputStream();
        try {
            repositoryPath = extractRepositoryPath(request);
            IEntity entity = getEntity(repositoryPath, request);
            if (entity != null) {
                getRepository(request).removeResource(repositoryPath);
            }
        } catch (IllegalArgumentException ex) {
            logger.error(String.format(REQUEST_PROCESSING_FAILED_S, repositoryPath) + ex.getMessage(), ex);
            response.sendError(HttpServletResponse.SC_BAD_REQUEST, ex.getMessage());
        } catch (MissingResourceException ex) {
            logger.error(String.format(REQUEST_PROCESSING_FAILED_S, repositoryPath) + ex.getMessage(), ex);
            response.sendError(HttpServletResponse.SC_NO_CONTENT, ex.getMessage());
        } finally {
            out.flush();
            out.close();
        }
    }

}