private void sendHttpResponseFromOnem2mResponse(
HttpServletResponse httpResponse, ResponsePrimitive onem2mResponse) throws IOException {
// the content is already in the required format ...
String content = onem2mResponse.getPrimitive(ResponsePrimitive.CONTENT);
String rscString = onem2mResponse.getPrimitive(ResponsePrimitive.RESPONSE_STATUS_CODE);
String rqi = onem2mResponse.getPrimitive(ResponsePrimitive.REQUEST_IDENTIFIER);
if (rqi != null) {
httpResponse.setHeader(Onem2m.HttpHeaders.X_M2M_RI, rqi);
}
int httpRSC = mapCoreResponseToHttpResponse(httpResponse, rscString);
if (content != null) {
httpResponse.setStatus(httpRSC);
httpResponse.getWriter().println(content);
} else {
httpResponse.setStatus(httpRSC);
}
if (rscString.charAt(0) == '2') {
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS_OK);
} else {
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS_ERROR);
}
String ct = onem2mResponse.getPrimitive(ResponsePrimitive.HTTP_CONTENT_TYPE);
if (ct != null) {
httpResponse.setContentType(ct);
}
String cl = onem2mResponse.getPrimitive(ResponsePrimitive.HTTP_CONTENT_LOCATION);
if (cl != null) {
httpResponse.setHeader("Content-Location", cl);
}
}
/**
* The handler for the HTTP requesst
*
* @param target target
* @param baseRequest request
* @param httpRequest request
* @param httpResponse response
* @throws IOException
* @throws ServletException
*/
@Override
public void handle(
String target,
Request baseRequest,
HttpServletRequest httpRequest,
HttpServletResponse httpResponse)
throws IOException, ServletException {
Onem2mRequestPrimitiveClientBuilder clientBuilder = new Onem2mRequestPrimitiveClientBuilder();
String headerValue;
clientBuilder.setProtocol(Onem2m.Protocol.HTTP);
Onem2mStats.getInstance().endpointInc(baseRequest.getRemoteAddr());
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS);
String contentType = httpRequest.getContentType();
if (contentType == null) contentType = "json";
contentType = contentType.toLowerCase();
if (contentType.contains("json")) {
clientBuilder.setContentFormat(Onem2m.ContentFormat.JSON);
} else if (contentType.contains("xml")) {
clientBuilder.setContentFormat(Onem2m.ContentFormat.XML);
} else {
httpResponse.setStatus(HttpServletResponse.SC_NOT_ACCEPTABLE);
httpResponse.getWriter().println("Unsupported media type: " + contentType);
httpResponse.setContentType("text/json;charset=utf-8");
baseRequest.setHandled(true);
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS_ERROR);
return;
}
clientBuilder.setTo(httpRequest.getRequestURI());
// pull fields out of the headers
headerValue = httpRequest.getHeader(Onem2m.HttpHeaders.X_M2M_ORIGIN);
if (headerValue != null) {
clientBuilder.setFrom(headerValue);
}
headerValue = httpRequest.getHeader(Onem2m.HttpHeaders.X_M2M_RI);
if (headerValue != null) {
clientBuilder.setRequestIdentifier(headerValue);
}
headerValue = httpRequest.getHeader(Onem2m.HttpHeaders.X_M2M_NM);
if (headerValue != null) {
clientBuilder.setName(headerValue);
}
headerValue = httpRequest.getHeader(Onem2m.HttpHeaders.X_M2M_GID);
if (headerValue != null) {
clientBuilder.setGroupRequestIdentifier(headerValue);
}
headerValue = httpRequest.getHeader(Onem2m.HttpHeaders.X_M2M_RTU);
if (headerValue != null) {
clientBuilder.setResponseType(headerValue);
}
headerValue = httpRequest.getHeader(Onem2m.HttpHeaders.X_M2M_OT);
if (headerValue != null) {
clientBuilder.setOriginatingTimestamp(headerValue);
}
// the contentType string can have ty=val attached to it so we should handle this case
Boolean resourceTypePresent = false;
String contentTypeResourceString = parseContentTypeForResourceType(contentType);
if (contentTypeResourceString != null) {
resourceTypePresent =
clientBuilder.parseQueryStringIntoPrimitives(contentTypeResourceString);
}
String method = httpRequest.getMethod().toLowerCase();
// look in query string if didnt find it in contentType header
if (!resourceTypePresent) {
resourceTypePresent =
clientBuilder.parseQueryStringIntoPrimitives(httpRequest.getQueryString());
} else {
clientBuilder.parseQueryStringIntoPrimitives(httpRequest.getQueryString());
}
if (resourceTypePresent && !method.contentEquals("post")) {
httpResponse.setStatus(HttpServletResponse.SC_BAD_REQUEST);
httpResponse.getWriter().println("Specifying resource type not permitted.");
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS_ERROR);
return;
}
// take the entire payload text and put it in the CONTENT field; it is the representation of
// the resource
String cn = IOUtils.toString(baseRequest.getInputStream()).trim();
if (cn != null && !cn.contentEquals("")) {
clientBuilder.setPrimitiveContent(cn);
}
switch (method) {
case "get":
clientBuilder.setOperationRetrieve();
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS_RETRIEVE);
break;
case "post":
if (resourceTypePresent) {
clientBuilder.setOperationCreate();
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS_CREATE);
} else {
clientBuilder.setOperationNotify();
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS_NOTIFY);
}
break;
case "put":
clientBuilder.setOperationUpdate();
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS_UPDATE);
break;
case "delete":
clientBuilder.setOperationDelete();
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS_DELETE);
break;
default:
httpResponse.setStatus(HttpServletResponse.SC_NOT_IMPLEMENTED);
httpResponse.getWriter().println("Unsupported method type: " + method);
httpResponse.setContentType("text/json;charset=utf-8");
baseRequest.setHandled(true);
Onem2mStats.getInstance().inc(Onem2mStats.HTTP_REQUESTS_ERROR);
return;
}
// invoke the service request
Onem2mRequestPrimitiveClient onem2mRequest = clientBuilder.build();
ResponsePrimitive onem2mResponse = Onem2m.serviceOnenm2mRequest(onem2mRequest, onem2mService);
// now place the fields from the onem2m result response back in the http fields, and send
sendHttpResponseFromOnem2mResponse(httpResponse, onem2mResponse);
httpResponse.addHeader("Access-Control-Allow-Origin", "*");
httpResponse.addHeader("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, OPTIONS");
baseRequest.setHandled(true);
}