com.meltmedia.cadmium.servlets.jersey.UpdateService.java Source code

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Here is the source code for com.meltmedia.cadmium.servlets.jersey.UpdateService.java

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/**
 *    Copyright 2012 meltmedia
 *
 *    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.meltmedia.cadmium.servlets.jersey;

import javax.inject.Inject;
import javax.ws.rs.Consumes;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

import org.apache.commons.lang3.StringUtils;
import org.jgroups.util.UUID;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.meltmedia.cadmium.core.CadmiumSystemEndpoint;
import com.meltmedia.cadmium.core.api.BasicApiResponse;
import com.meltmedia.cadmium.core.api.UpdateRequest;
import com.meltmedia.cadmium.core.commands.ContentUpdateRequest;
import com.meltmedia.cadmium.core.commands.GitLocation;
import com.meltmedia.cadmium.core.messaging.Message;
import com.meltmedia.cadmium.core.messaging.MessageSender;
import com.meltmedia.cadmium.core.messaging.ProtocolMessage;

@CadmiumSystemEndpoint
@Path("/update")
public class UpdateService extends AuthorizationService {
    private final Logger log = LoggerFactory.getLogger(getClass());

    @Inject
    protected MessageSender sender;

    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public BasicApiResponse update(UpdateRequest req,
            @HeaderParam("Authorization") @DefaultValue("no token") String auth) throws Exception {
        return sendJgroupsMessage(req, auth, ProtocolMessage.UPDATE, UpdateRequest.CONTENT_BRANCH_PREFIX);
    }

    @POST
    @Path("/config")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public BasicApiResponse updateConfig(UpdateRequest req,
            @HeaderParam("Authorization") @DefaultValue("no token") String auth) throws Exception {
        return sendJgroupsMessage(req, auth, ProtocolMessage.CONFIG_UPDATE, UpdateRequest.CONFIG_BRANCH_PREFIX);
    }

    private BasicApiResponse sendJgroupsMessage(UpdateRequest req, String auth, String cmd, String prefix)
            throws Exception {
        if (!this.isAuth(auth)) {
            throw new Exception("Unauthorized!");
        }

        BasicApiResponse resp = new BasicApiResponse();
        resp.setUuid(UUID.randomUUID().toString());

        if (sender == null) {
            resp.setMessage("Cadmium is not fully deployed. See logs for details.");
            log.error("Channel is not wired");
            return resp;
        } else if (StringUtils.isBlank(req.getComment())) {
            resp.setMessage("invalid request");
            return resp;
        } else if (StringUtils.isNotBlank(req.getBranch())
                && !StringUtils.startsWithIgnoreCase(req.getBranch(), prefix)) {
            resp.setMessage("Branch must begin with prefix \"" + prefix + "-\"");
            return resp;
        }

        // NOTE: if the headers had the openId and UUID, then we could reuse the request from the client.
        ContentUpdateRequest body = new ContentUpdateRequest();
        body.setContentLocation(new GitLocation(emptyStringIfNull(req.getRepo()),
                emptyStringIfNull(req.getBranch()), emptyStringIfNull(req.getSha())));
        body.setComment(req.getComment());
        body.setOpenId(openId);
        body.setUuid(resp.getUuid());
        body.setRevertable(true);
        Message<ContentUpdateRequest> msg = new Message<ContentUpdateRequest>(cmd, body);
        sender.sendMessage(msg, null);
        resp.setMessage("ok");

        return resp;
    }

    private static String emptyStringIfNull(final String value) {
        if (value == null)
            return "";
        else
            return value;
    }

}