org.apache.shindig.social.sample.service.SampleContainerHandler.java Source code

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Here is the source code for org.apache.shindig.social.sample.service.SampleContainerHandler.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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 org.apache.shindig.social.sample.service;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.shindig.common.util.ImmediateFuture;
import org.apache.shindig.protocol.Operation;
import org.apache.shindig.protocol.ProtocolException;
import org.apache.shindig.protocol.RequestItem;
import org.apache.shindig.protocol.Service;
import org.apache.shindig.social.sample.spi.JsonDbOpensocialService;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.util.concurrent.Future;
import java.util.Map;

import javax.servlet.http.HttpServletResponse;

import com.google.inject.Inject;

@Service(name = "samplecontainer", path = "/{type}/{doevil}")
public class SampleContainerHandler {

    private final JsonDbOpensocialService service;

    @Inject
    public SampleContainerHandler(JsonDbOpensocialService dbService) {
        this.service = dbService;
    }

    /**
     * We don't distinguish between put and post for these urls.
     */
    @Operation(httpMethods = "PUT")
    public Future<?> update(RequestItem request) throws ProtocolException {
        return create(request);
    }

    /**
     * Handles /samplecontainer/setstate and /samplecontainer/setevilness/{doevil}. TODO(doll): These
     * urls aren't very resty. Consider changing the samplecontainer.html calls post.
     */
    @Operation(httpMethods = "POST", bodyParam = "data")
    public Future<?> create(RequestItem request) throws ProtocolException {
        String type = request.getParameter("type");
        if (type.equals("setstate")) {
            try {
                @SuppressWarnings("unchecked")
                Map<String, String> bodyparams = request.getTypedParameter("data", Map.class);
                String stateFile = bodyparams.get("fileurl");
                service.setDb(new JSONObject(fetchStateDocument(stateFile)));
            } catch (JSONException e) {
                throw new ProtocolException(HttpServletResponse.SC_BAD_REQUEST,
                        "The json state file was not valid json", e);
            }
        } else if (type.equals("setevilness")) {
            throw new ProtocolException(HttpServletResponse.SC_NOT_IMPLEMENTED,
                    "evil data has not been implemented yet");
        }

        return ImmediateFuture.newInstance(null);
    }

    /**
     * Handles /samplecontainer/dumpstate
     */
    @Operation(httpMethods = "GET")
    public Future<?> get(RequestItem request) {
        return ImmediateFuture.newInstance(service.getDb());
    }

    private String fetchStateDocument(String stateFileLocation) {
        String errorMessage = "The json state file " + stateFileLocation + " could not be fetched and parsed.";

        HttpMethod jsonState = new GetMethod(stateFileLocation);
        HttpClient client = new HttpClient();
        try {
            client.executeMethod(jsonState);

            if (jsonState.getStatusCode() != 200) {
                throw new RuntimeException(errorMessage);
            }
            return jsonState.getResponseBodyAsString();
        } catch (IOException e) {
            throw new RuntimeException(errorMessage, e);
        } finally {
            jsonState.releaseConnection();
        }
    }
}