/**
* Updates the endpoint parameters from POST and PUT requests.
*
* @param request A POST or PUT request with a {?et,lt,con} URI Template query and a Link Format
* payload.
*/
public boolean setParameters(Request request) {
LinkAttribute attr;
String newEndpointType = "";
int newLifeTime = NetworkConfig.getStandard().getInt("RD_DEFAULT_LIFETIME");
String newContext = "";
/*
* get lifetime from option query - only for PUT request.
*/
List<String> query = request.getOptions().getURIQueries();
for (String q : query) {
// FIXME Do not use Link attributes for URI template variables
attr = LinkAttribute.parse(q);
if (attr.getName().equals(LinkFormat.END_POINT_TYPE)) {
newEndpointType = attr.getValue();
}
if (attr.getName().equals(LinkFormat.LIFE_TIME)) {
newLifeTime = attr.getIntValue();
if (newLifeTime < 60) {
LOGGER.warning("Enforcing minimal RD lifetime of 60 seconds (was " + newLifeTime + ")");
newLifeTime = 60;
}
}
if (attr.getName().equals(LinkFormat.CONTEXT)) {
newContext = attr.getValue();
}
}
setEndpointType(newEndpointType);
setLifeTime(newLifeTime);
// TODO check with draft authors if update should be atomic
if (newContext.equals("")) {
context = "coap://" + request.getSource() + ":" + request.getSourcePort();
} else {
Request checkRequest = Request.newGet();
try {
checkRequest.setURI(context);
} catch (Exception e) {
LOGGER.warning(e.toString());
return false;
}
}
return updateEndpointResources(request.getPayloadString());
}
/**
* Creates a new subResource for each resource the node wants register. Each resource is separated
* by ",". E.g. A node can register a resource for reading the temperature and another one for
* reading the humidity.
*/
private boolean updateEndpointResources(String linkFormat) {
Scanner scanner = new Scanner(linkFormat);
scanner.useDelimiter(",");
List<String> pathResources = new ArrayList<String>();
while (scanner.hasNext()) {
pathResources.add(scanner.next());
}
for (String p : pathResources) {
scanner = new Scanner(p);
/*
* get the path of the endpoint's resource. E.g. from
* </readings/temp> it will select /readings/temp.
*/
String path = "", pathTemp = "";
if ((pathTemp = scanner.findInLine("</.*?>")) != null) {
path = pathTemp.substring(1, pathTemp.length() - 1);
} else {
scanner.close();
return false;
}
ResourceBase resource = addNodeResource(path);
/*
* Since created the subResource, get all the attributes from
* the payload. Each parameter is separated by a ";".
*/
scanner.useDelimiter(";");
while (scanner.hasNext()) {
LinkAttribute attr = LinkAttribute.parse(scanner.next());
if (attr.getValue() == null) resource.getAttributes().addAttribute(attr.getName());
else resource.getAttributes().addAttribute(attr.getName(), attr.getValue());
}
resource.getAttributes().addAttribute(LinkFormat.END_POINT, getEndpointIdentifier());
}
scanner.close();
return true;
}
