/**
* Licensed to The Apereo Foundation under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
*
*
* The Apereo Foundation licenses this file to you under the Educational
* Community 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://opensource.org/licenses/ecl2.txt
*
* 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.opencastproject.textanalyzer.impl.endpoint;
import org.opencastproject.job.api.JaxbJob;
import org.opencastproject.job.api.Job;
import org.opencastproject.job.api.JobProducer;
import org.opencastproject.mediapackage.Attachment;
import org.opencastproject.mediapackage.MediaPackageElement;
import org.opencastproject.mediapackage.MediaPackageElementParser;
import org.opencastproject.rest.AbstractJobProducerEndpoint;
import org.opencastproject.serviceregistry.api.ServiceRegistry;
import org.opencastproject.textanalyzer.api.TextAnalyzerService;
import org.opencastproject.util.doc.rest.RestParameter;
import org.opencastproject.util.doc.rest.RestQuery;
import org.opencastproject.util.doc.rest.RestResponse;
import org.opencastproject.util.doc.rest.RestService;
import org.osgi.service.component.ComponentContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.FormParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
/**
* The REST endpoint for MediaAnalysisServices
*/
@Path("")
@RestService(name = "textanalysis", title = "Text Analysis Service",
abstractText = "This service enables conversion from one caption format to another.",
notes = {
"All paths above are relative to the REST endpoint base (something like http://your.server/files)",
"If the service is down or not working it will return a status 503, this means the the underlying service is "
+ "not working and is either restarting or has failed",
"A status code 500 means a general failure has occurred which is not recoverable and was not anticipated. In "
+ "other words, there is a bug! You should file an error report with your server logs from the time when the "
+ "error occurred: <a href=\"https://opencast.jira.com\">Opencast Issue Tracker</a>" })
public class TextAnalysisRestEndpoint extends AbstractJobProducerEndpoint {
/** The logging facility */
private static final Logger logger = LoggerFactory.getLogger(TextAnalysisRestEndpoint.class);
/** The text analyzer */
protected TextAnalyzerService service;
/** The service registry */
protected ServiceRegistry serviceRegistry = null;
/**
* Callback from OSGi that is called when this service is activated.
*
* @param cc
* OSGi component context
*/
public void activate(ComponentContext cc) {
// String serviceUrl = (String) cc.getProperties().get(RestConstants.SERVICE_PATH_PROPERTY);
}
@POST
@Produces(MediaType.TEXT_XML)
@Path("")
@RestQuery(name = "analyze", description = "Submit a track for analysis.", restParameters = { @RestParameter(description = "The image to analyze for text.", isRequired = true, name = "image", type = RestParameter.Type.FILE) }, reponses = {
@RestResponse(description = "OK, The receipt to use when polling for the resulting mpeg7 catalog.", responseCode = HttpServletResponse.SC_OK),
@RestResponse(description = "The argument cannot be parsed into a media package element.", responseCode = HttpServletResponse.SC_BAD_REQUEST),
@RestResponse(description = "The service is unavailable at the moment.", responseCode = HttpServletResponse.SC_SERVICE_UNAVAILABLE) }, returnDescription = "The receipt to use when polling for the resulting mpeg7 catalog.")
public Response analyze(@FormParam("image") String image) {
if (service == null)
throw new WebApplicationException(Status.SERVICE_UNAVAILABLE);
try {
MediaPackageElement element = MediaPackageElementParser.getFromXml(image);
if (!(element instanceof Attachment))
throw new WebApplicationException(Status.BAD_REQUEST);
Job job = service.extract((Attachment) element);
return Response.ok(new JaxbJob(job)).build();
} catch (Exception e) {
logger.info(e.getMessage(), e);
return Response.serverError().build();
}
}
/**
* Callback from the OSGi declarative services to set the service registry.
*
* @param serviceRegistry
* the service registry
*/
protected void setServiceRegistry(ServiceRegistry serviceRegistry) {
this.serviceRegistry = serviceRegistry;
}
/**
* Sets the text analyzer
*
* @param textAnalyzer
* the text analyzer
*/
protected void setTextAnalyzer(TextAnalyzerService textAnalyzer) {
this.service = textAnalyzer;
}
/**
* {@inheritDoc}
*
* @see org.opencastproject.rest.AbstractJobProducerEndpoint#getService()
*/
@Override
public JobProducer getService() {
if (service instanceof JobProducer)
return (JobProducer) service;
else
return null;
}
/**
* {@inheritDoc}
*
* @see org.opencastproject.rest.AbstractJobProducerEndpoint#getServiceRegistry()
*/
@Override
public ServiceRegistry getServiceRegistry() {
return serviceRegistry;
}
}