/**
* Executes a query.
*
* @param command Name of the command to execute
* @param parameters Parameters
* @param manager Reference back to business layer
* @return Parsed JSON object, empty object on error.
*/
public JsonNode query(String command, JsonNode parameters, INotifiableManager manager) {
URLConnection uc = null;
try {
final ObjectMapper mapper = Client.MAPPER;
if (mUrlSuffix == null) {
throw new NoSettingsException();
}
final URL url = new URL(mUrlSuffix + XBMC_JSONRPC_BOOTSTRAP);
uc = url.openConnection();
uc.setConnectTimeout(SOCKET_CONNECTION_TIMEOUT);
uc.setReadTimeout(mSocketReadTimeout);
if (authEncoded != null) {
uc.setRequestProperty("Authorization", "Basic " + authEncoded);
}
uc.setRequestProperty("Content-Type", "application/json");
uc.setDoOutput(true);
final ObjectNode data = Client.obj().p("jsonrpc", "2.0").p("method", command).p("id", "1");
if (parameters != null) {
data.put("params", parameters);
}
final JsonFactory jsonFactory = new JsonFactory();
final JsonGenerator jg =
jsonFactory.createJsonGenerator(uc.getOutputStream(), JsonEncoding.UTF8);
jg.setCodec(mapper);
// POST data
jg.writeTree(data);
jg.flush();
final JsonParser jp = jsonFactory.createJsonParser(uc.getInputStream());
jp.setCodec(mapper);
final JsonNode ret = jp.readValueAs(JsonNode.class);
return ret;
} catch (MalformedURLException e) {
manager.onError(e);
} catch (IOException e) {
int responseCode = -1;
try {
responseCode = ((HttpURLConnection) uc).getResponseCode();
} catch (IOException e1) {
} // do nothing, getResponse code failed so treat as default i/o exception.
if (uc != null && responseCode == HttpURLConnection.HTTP_UNAUTHORIZED) {
manager.onError(new HttpException(Integer.toString(HttpURLConnection.HTTP_UNAUTHORIZED)));
} else {
manager.onError(e);
}
} catch (NoSettingsException e) {
manager.onError(e);
}
return new ObjectNode(null);
}
public JsonNode getJson(
INotifiableManager manager, String method, JsonNode parameters, String resultField) {
try {
final JsonNode response = getJson(manager, method, parameters);
final JsonNode result = response.get(resultField);
if (result == null) {
throw new Exception("Could not find field \"" + resultField + "\" as return value.");
} else {
return response.get(resultField);
}
} catch (Exception e) {
manager.onError(e);
}
return Client.obj();
}
/**
* Executes a JSON-RPC command and returns the result as JSON object.
*
* @param manager Upper layer reference for error posting
* @param method Name of the method to run
* @param parameters Parameters of the method
* @return Result
*/
public JsonNode getJson(INotifiableManager manager, String method, JsonNode parameters) {
try {
final JsonNode response = query(method, parameters, manager);
final JsonNode result = response.get(RESULT_FIELD);
if (result == null) {
if (response.get(ERROR_FIELD) == null) {
throw new Exception("Weird JSON response, could not parse error.");
} else {
throw new Exception(response.get(ERROR_FIELD).get("message").getTextValue());
}
} else {
return response.get(RESULT_FIELD);
}
} catch (Exception e) {
manager.onError(e);
}
return Client.obj();
}