org.betaconceptframework.astroboa.resourceapi.locator.RepositoryLocator.java Source code

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Here is the source code for org.betaconceptframework.astroboa.resourceapi.locator.RepositoryLocator.java

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/*
 * Copyright (C) 2005-2012 BetaCONCEPT Limited
 *
 * This file is part of Astroboa.
 *
 * Astroboa 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.
 *
 * Astroboa 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 Astroboa.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.betaconceptframework.astroboa.resourceapi.locator;

import java.net.HttpURLConnection;

import javax.servlet.ServletContext;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.Context;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.time.DurationFormatUtils;
import org.betaconceptframework.astroboa.api.security.AstroboaCredentials;
import org.betaconceptframework.astroboa.api.security.IdentityPrincipal;
import org.betaconceptframework.astroboa.api.security.exception.CmsInvalidPasswordException;
import org.betaconceptframework.astroboa.client.AstroboaClient;
import org.betaconceptframework.astroboa.resourceapi.utility.AstroboaClientCache;
import org.betaconceptframework.astroboa.resourceapi.utility.RepositoryConfigurationBean;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.sun.jersey.core.util.Base64;

/**
 * Resource locator representing the main entry of all 
 * requests for one or more resources from a Astroboa repository.
 * 
 * This class is responsible to login to the provided repository id
 * and then to forward request to the appropriate sub resource.
 * 
 * @author Gregory Chomatas (gchomatas@betaconcept.com)
 * @author Savvas Triantafyllou (striantafyllou@betaconcept.com)
 * 
 */
@ApplicationPath("/")
@Path("/")
public class RepositoryLocator extends Application {

    private final Logger logger = LoggerFactory.getLogger(getClass());

    @Path("{repositoryId}")
    public ResourceLocator connectToAstroboaRepository(@HeaderParam("Authorization") String authorization,
            @PathParam("repositoryId") String repositoryId, @Context ServletContext servletContext) {

        if (StringUtils.isBlank(repositoryId)) {
            throw new WebApplicationException(HttpURLConnection.HTTP_NOT_FOUND);
        }

        try {

            AstroboaClient astroboaClient = null;

            long start = System.currentTimeMillis();

            if (authorization != null) {

                String cacheKey = authorization + repositoryId;

                astroboaClient = AstroboaClientCache.Instance.get(cacheKey);

                if (astroboaClient == null) {
                    String encodedUsernamePass = authorization.substring(5);
                    String usernamePass = Base64.base64Decode(encodedUsernamePass);

                    String[] usernamePassSplitted = usernamePass.split(":");

                    if (usernamePassSplitted.length == 2) {
                        astroboaClient = new AstroboaClient(AstroboaClient.INTERNAL_CONNECTION);
                        AstroboaCredentials credentials = new AstroboaCredentials(usernamePassSplitted[0],
                                usernamePassSplitted[1]);
                        astroboaClient.login(repositoryId, credentials);

                        astroboaClient = AstroboaClientCache.Instance.cache(astroboaClient, cacheKey);

                    } else {
                        logger.error(
                                "provided authorization in header (BASIC AUTH) cannot be decoded to username and password. Encoded Authorization String found in header is: "
                                        + authorization);
                        throw new WebApplicationException(HttpURLConnection.HTTP_UNAUTHORIZED);
                    }
                }
            } else { // login as anonymous

                final String anonymousCacheKey = repositoryId + IdentityPrincipal.ANONYMOUS;

                astroboaClient = AstroboaClientCache.Instance.get(anonymousCacheKey);

                if (astroboaClient == null) {

                    astroboaClient = new AstroboaClient(AstroboaClient.INTERNAL_CONNECTION);

                    String permanentKey = retrievePermanentKeyForAnonymousUser(repositoryId, servletContext);

                    astroboaClient.loginAsAnonymous(repositoryId, permanentKey);

                    astroboaClient = AstroboaClientCache.Instance.cache(astroboaClient, anonymousCacheKey);

                }
            }

            logger.debug("Retrieve/Create astroboa repository client {} in  {}",
                    System.identityHashCode(astroboaClient),
                    DurationFormatUtils.formatDurationHMS(System.currentTimeMillis() - start));

            return new ResourceLocator(astroboaClient);

        } catch (CmsInvalidPasswordException e) {
            logger.error("Login to Astroboa Repository was not successfull");
            throw new WebApplicationException(HttpURLConnection.HTTP_UNAUTHORIZED);
        } catch (Exception e) {
            logger.error("A problem occured while connecting repository client to Astroboa Repository", e);
            throw new WebApplicationException(HttpURLConnection.HTTP_NOT_FOUND);
        }
    }

    private String retrievePermanentKeyForAnonymousUser(String repositoryId, ServletContext servletContext) {

        // get the key for permanent connections
        String anonymousUserPermanentKey = RepositoryConfigurationBean.INSTANCE
                .getAnonymousPermanentKeyPerRepository().get(repositoryId);

        if (anonymousUserPermanentKey != null) {
            return anonymousUserPermanentKey;
        } else {
            logger.warn("The anonymous user permanent key cannot be retrieved in repository configuration file. "
                    + "Login will be performed without a permanent key. This is not a problem. However it results in creating a new user token per connection and consumes more server memory");
            return null;
        }
    }
}