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LargeCreate.java
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LargeCreate.java
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/*******************************************************************************
* Copyright (c) 2012, Institute for Pervasive Computing, ETH Zurich.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Californium CoAP framework.
******************************************************************************/
package ch.ethz.inf.vs.californium.examples.plugtest;
import java.util.ArrayList;
import ch.ethz.inf.vs.californium.coap.CodeRegistry;
import ch.ethz.inf.vs.californium.coap.GETRequest;
import ch.ethz.inf.vs.californium.coap.LinkFormat;
import ch.ethz.inf.vs.californium.coap.MediaTypeRegistry;
import ch.ethz.inf.vs.californium.coap.OptionNumberRegistry;
import ch.ethz.inf.vs.californium.coap.POSTRequest;
import ch.ethz.inf.vs.californium.coap.DELETERequest;
import ch.ethz.inf.vs.californium.coap.Request;
import ch.ethz.inf.vs.californium.coap.Response;
import ch.ethz.inf.vs.californium.endpoint.LocalResource;
/**
* This resource implements a test of specification for the
* ETSI IoT CoAP Plugtests, Paris, France, 24 - 25 March 2012.
*
* @author Matthias Kovatsch
*/
public class LargeCreate extends LocalResource {
// Members ////////////////////////////////////////////////////////////////
private byte[] data = null;
private int dataCt = -1;
// Constructors ////////////////////////////////////////////////////////////
/*
* Default constructor.
*/
public LargeCreate() {
this("large-create");
}
/*
* Constructs a new storage resource with the given resourceIdentifier.
*/
public LargeCreate(String resourceIdentifier) {
super(resourceIdentifier, false);
setTitle("Large resource that can be created using POST method");
setResourceType("block");
}
// REST Operations /////////////////////////////////////////////////////////
@Override
public void performGET(GETRequest request) {
Response response = null;
if (data==null) {
response = new Response(CodeRegistry.RESP_CONTENT);
response.setPayload("Nothing POSTed yet", MediaTypeRegistry.TEXT_PLAIN);
} else {
// content negotiation
ArrayList<Integer> supported = new ArrayList<Integer>();
supported.add(dataCt);
int ct = dataCt;
if ((ct = MediaTypeRegistry.contentNegotiation(dataCt, supported, request.getOptions(OptionNumberRegistry.ACCEPT)))==MediaTypeRegistry.UNDEFINED) {
request.respond(CodeRegistry.RESP_NOT_ACCEPTABLE, "Accept " + MediaTypeRegistry.toString(dataCt));
return;
}
response = new Response(CodeRegistry.RESP_CONTENT);
// load data into payload
response.setPayload(data);
// set content type
response.setContentType(ct);
}
// complete the request
request.respond(response);
}
/*
* POST content to create this resource.
*/
@Override
public void performPOST(POSTRequest request) {
if (request.getContentType()==MediaTypeRegistry.UNDEFINED) {
request.respond(CodeRegistry.RESP_BAD_REQUEST, "Content-Type not set");
return;
}
// store payload
storeData(request);
// create new response
Response response = new Response(CodeRegistry.RESP_CREATED);
// inform client about the location of the new resource
response.setLocationPath("/nirvana");
// complete the request
request.respond(response);
}
/*
* DELETE the data and act as resouce was deleted.
*/
@Override
public void performDELETE(DELETERequest request) {
// delete
data = null;
// complete the request
request.respond(new Response(CodeRegistry.RESP_DELETED));
}
// Internal ////////////////////////////////////////////////////////////////
/*
* Convenience function to store data contained in a
* PUT/POST-Request. Notifies observing endpoints about
* the change of its contents.
*/
private synchronized void storeData(Request request) {
// set payload and content type
data = request.getPayload();
dataCt = request.getContentType();
clearAttribute(LinkFormat.CONTENT_TYPE);
setContentTypeCode(dataCt);
// signal that resource state changed
changed();
}
}