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package com.sun.jersey.server.impl.wadl;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.lang.annotation.Annotation;
import java.net.URI;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.core.Variant;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Providers;
import javax.xml.bind.Marshaller;
import com.sun.jersey.core.header.MediaTypes;
import com.sun.jersey.server.wadl.ApplicationDescription;
import com.sun.jersey.server.wadl.WadlApplicationContext;
import com.sun.jersey.spi.resource.Singleton;
import com.sun.research.ws.wadl.Application;
/**
*
* @author [email protected]
*/
@Singleton
public final class WadlResource {
public static final String HTTPDATEFORMAT = "EEE, dd MMM yyyy HH:mm:ss zzz";
private static final Logger LOGGER = Logger.getLogger(WadlResource.class.getName());
private WadlApplicationContext wadlContext;
private URI lastBaseUri;
private byte[] cachedWadl;
private String lastModified;
private Variant lastVariant;
private ApplicationDescription applicationDescription;
public WadlResource(@Context WadlApplicationContext wadlContext) {
this.wadlContext = wadlContext;
this.lastModified = new SimpleDateFormat(HTTPDATEFORMAT).format(new Date());
}
@Produces({MediaTypes.WADL_STRING, MediaTypes.WADL_JSON_STRING, "application/xml"})
@GET
public synchronized Response getWadl(
@Context Request request,
@Context UriInfo uriInfo,
@Context Providers providers) {
if(!wadlContext.isWadlGenerationEnabled()) {
return Response.status(Response.Status.NOT_FOUND).build();
}
// Select the right variant based on the request type
List vl = Variant.mediaTypes(MediaTypes.WADL, MediaTypes.WADL_JSON, MediaType.APPLICATION_XML_TYPE)
.add().build();
Variant v = request.selectVariant(vl);
if (v==null) {
return Response.notAcceptable(vl).build();
}
// Update the last modified stamp
if (applicationDescription == null || ((lastBaseUri != null) && !lastBaseUri.equals(uriInfo.getBaseUri()) && !lastVariant.equals(v))) {
this.lastBaseUri = uriInfo.getBaseUri();
this.lastModified = new SimpleDateFormat(HTTPDATEFORMAT).format(new Date());
this.lastVariant = v;
applicationDescription = wadlContext.getApplication(uriInfo);
final Application application = applicationDescription.getApplication();
final ByteArrayOutputStream os = new ByteArrayOutputStream();
if(v.getMediaType().equals(MediaTypes.WADL)) {
try {
final Marshaller marshaller = wadlContext.getJAXBContext().createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(application, os);
cachedWadl = os.toByteArray();
os.close();
} catch (Exception e) {
LOGGER.log(Level.WARNING, "Could not marshal wadl Application.", e);
return Response.serverError().build();
}
} else {
final MessageBodyWriter messageBodyWriter = providers.getMessageBodyWriter(Application.class, null, new Annotation[0], v.getMediaType());
if(messageBodyWriter == null) {
return Response.status(Response.Status.UNSUPPORTED_MEDIA_TYPE).build();
}
try {
messageBodyWriter.writeTo(application, Application.class, null, new Annotation[0], v.getMediaType(), null /* headers */, os);
cachedWadl = os.toByteArray();
os.close();
} catch (Exception e) {
LOGGER.log(Level.WARNING, "Could not serialize wadl Application.", e);
return Response.serverError().build();
}
}
}
return Response.ok(new ByteArrayInputStream(cachedWadl)).header("Last-modified", lastModified).build();
}
@Produces({"*/*"})
@GET
@Path("{path}")
public synchronized Response geExternalGramar(
@Context UriInfo uriInfo,
@PathParam("path") String path) {
// Fail if wadl generation is disabled
if(!wadlContext.isWadlGenerationEnabled()) {
return Response.status(Response.Status.NOT_FOUND).build();
}
ApplicationDescription applicationDescription =
wadlContext.getApplication(uriInfo);
// Fail is we don't have any metadata for this path
ApplicationDescription.ExternalGrammar externalMetadata = applicationDescription.getExternalGrammar( path );
if( externalMetadata==null ) {
return Response.status(Response.Status.NOT_FOUND).build();
}
// Return the data
return Response.ok().type( externalMetadata.getType() )
.entity(externalMetadata.getContent())
.build();
}
}
