/**
* Get the market depth as a Depth object.
*
* @param currencyPair The queried currency pair.
* @throws TradeDataNotAvailableException if the depth is not available.
*/
public Depth getDepth(CurrencyPair currencyPair) throws TradeDataNotAvailableException {
if (!isSupportedCurrencyPair(currencyPair)) {
throw new CurrencyNotSupportedException(
"Currency pair: " + currencyPair.toString() + " is currently not supported on " + _name);
}
// Create the URL to fetch the depth.
String url = _url + "depth_" + currencyPair.getCurrency().toString().toLowerCase() + "_json.js";
// Do the actual request.
String requestResult = HttpUtils.httpGet(url);
if (requestResult != null) { // Request sucessful?
try {
// Convert the result to JSON.
JSONObject requestResultJSON = (JSONObject) JSONObject.fromObject(requestResult);
// Try to convert the response to a depth object and return it.
return new HuobiDepth(requestResultJSON, currencyPair, this);
} catch (JSONException je) {
LogUtils.getInstance()
.getLogger()
.error("Cannot parse " + this._name + " depth return: " + je.toString());
throw new TradeDataNotAvailableException("cannot parse depth data from " + this._name);
}
}
// Response from server was null.
throw new TradeDataNotAvailableException(
this._name + " server did not respond to depth request");
}
public void handlRequest(HttpServletRequest request, HttpServletResponse response) {
printRequest(request);
String method = request.getParameter(ServiceConstant.METHOD);
CommonService obj = null;
try {
obj = CommonService.createServiceObjectByMethod(method);
} catch (InstantiationException e1) {
log.severe(
"<handlRequest> but exception while create service object for method("
+ method
+ "), exception="
+ e1.toString());
e1.printStackTrace();
} catch (IllegalAccessException e1) {
log.severe(
"<handlRequest> but exception while create service object for method("
+ method
+ "), exception="
+ e1.toString());
e1.printStackTrace();
}
try {
if (obj == null) {
sendResponseByErrorCode(response, ErrorCode.ERROR_PARA_METHOD_NOT_FOUND);
return;
}
obj.setCassandraClient(cassandraClient);
obj.setMongoClient(mongoClient);
obj.setRequest(request);
if (!obj.validateSecurity(request)) {
sendResponseByErrorCode(response, ErrorCode.ERROR_INVALID_SECURITY);
return;
}
// parse request parameters
if (!obj.setDataFromRequest(request)) {
sendResponseByErrorCode(response, obj.resultCode);
return;
}
// print parameters
obj.printData();
// handle request
obj.handleData();
} catch (HectorException e) {
obj.resultCode = ErrorCode.ERROR_CASSANDRA;
log.severe("catch DB exception=" + e.toString());
e.printStackTrace();
} catch (JSONException e) {
obj.resultCode = ErrorCode.ERROR_JSON;
log.severe("catch JSON exception=" + e.toString());
e.printStackTrace();
} catch (Exception e) {
obj.resultCode = ErrorCode.ERROR_SYSTEM;
log.severe("catch general exception=" + e.toString());
e.printStackTrace();
} finally {
}
String responseData = obj.getResponseString();
// send back response
sendResponse(response, responseData);
}
