/**
* Set the value of an input parameter before a message service call. If the param name already
* exists, the param value will be overwritten with the new value provided
*
* @param parameterName the parameter name
* @param parameterValue the string parameter value
* @return the current ActionMessage object instance
* @throws IllegalArgumentException if the provided parameterName is not valid for this message or
* if no input parameters are required for this message
*/
public ActionMessage setInputParameter(String parameterName, String parameterValue)
throws IllegalArgumentException {
if (serviceAction.getInputActionArguments() == null) {
throw new IllegalArgumentException("No input parameters required for this message");
}
Argument arg = serviceAction.getInputActionArgument(parameterName);
if (arg == null) {
throw new IllegalArgumentException(
"Wrong input argument name for this action:"
+ parameterName
+ " available parameters are : "
+ serviceAction.getInputActionArguments());
}
for (Iterator<InputParamContainer> i = inputParameters.iterator(); i.hasNext(); ) {
InputParamContainer container = i.next();
if (container.name.equals(parameterName)) {
container.value = parameterValue;
return this;
}
}
// nothing found add the new value
InputParamContainer container = new InputParamContainer();
container.name = parameterName;
container.value = parameterValue;
inputParameters.add(container);
return this;
}
/**
* Set the value of an input parameter before a message service call
*
* @param parameterName the parameter name
* @param parameterValue the date parameter value, will be automatically translated to the correct
* ISO 8601 date format for the given action input param related state variable
* @return the current ActionMessage object instance
* @throws IllegalArgumentException if the provided parameterName is not valid for this message or
* if no input parameters are required for this message
*/
public ActionMessage setInputParameter(String parameterName, Date parameterValue)
throws IllegalArgumentException {
if (serviceAction.getInputActionArguments() == null) {
throw new IllegalArgumentException("No input parameters required for this message");
}
Argument arg = serviceAction.getInputActionArgument(parameterName);
if (arg == null) {
throw new IllegalArgumentException(
"Wrong input argument name for this action:"
+ parameterName
+ " available parameters are : "
+ serviceAction.getInputActionArguments());
}
StateVariable linkedVar = arg.getRelatedStateVariable();
if (linkedVar.dataType.equals(StateVariableTypes.TIME)) {
return setInputParameter(parameterName, ISO8601Date.getIsoTime(parameterValue));
} else if (linkedVar.dataType.equals(StateVariableTypes.TIME_TZ)) {
return setInputParameter(parameterName, ISO8601Date.getIsoTimeZone(parameterValue));
} else if (linkedVar.dataType.equals(StateVariableTypes.DATE)) {
return setInputParameter(parameterName, ISO8601Date.getIsoDate(parameterValue));
} else if (linkedVar.dataType.equals(StateVariableTypes.DATETIME)) {
return setInputParameter(parameterName, ISO8601Date.getIsoDateTime(parameterValue));
} else if (linkedVar.dataType.equals(StateVariableTypes.DATETIME_TZ)) {
return setInputParameter(parameterName, ISO8601Date.getIsoDateTimeZone(parameterValue));
} else {
throw new IllegalArgumentException(
"Related input state variable " + linkedVar.name + " is not of an date type");
}
}
/**
* Protected constuctor so that only messages factories can build it
*
* @param service the service for which the
* @param serviceAction
*/
protected ActionMessage(Service service, Action serviceAction) {
this.service = service;
this.serviceAction = serviceAction;
if (serviceAction.getInputActionArguments() != null) {
inputParameters = new ArrayList<InputParamContainer>();
}
}
/**
* Executes the message and retuns the UPNP device response, according to the UPNP specs, this
* method could take up to 30 secs to process ( time allowed for a device to respond to a request
* )
*
* @return a response object containing the UPNP parsed response
* @throws IOException if some IOException occurs during message send and reception process
* @throws UPNPResponseException if an UPNP error message is returned from the server or if some
* parsing exception occurs ( detailErrorCode = 899, detailErrorDescription = SAXException
* message )
*/
public ActionResponse service() throws IOException, UPNPResponseException {
ActionResponse rtrVal = null;
UPNPResponseException upnpEx = null;
IOException ioEx = null;
StringBuilder body = new StringBuilder(256);
body.append("<?xml version=\"1.0\"?>\r\n");
body.append("<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\"");
body.append(" s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">");
body.append("<s:Body>");
body.append("<u:")
.append(serviceAction.getName())
.append(" xmlns:u=\"")
.append(service.serviceType)
.append("\">");
if (serviceAction.getInputActionArguments() != null) {
// this action requires params so we just set them...
for (Iterator<InputParamContainer> itr = inputParameters.iterator(); itr.hasNext(); ) {
InputParamContainer container = itr.next();
body.append("<").append(container.name).append(">").append(container.value);
body.append("</").append(container.name).append(">");
}
}
body.append("</u:").append(serviceAction.getName()).append(">");
body.append("</s:Body>");
body.append("</s:Envelope>");
URL url = new URL(service.controlURL.toString());
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setInstanceFollowRedirects(false);
// conn.setConnectTimeout( 30000 );
conn.setRequestProperty("HOST", url.getHost() + ":" + url.getPort());
conn.setRequestProperty("CONTENT-TYPE", "text/xml; charset=\"utf-8\"");
conn.setRequestProperty("CONTENT-LENGTH", Integer.toString(body.length()));
conn.setRequestProperty(
"SOAPACTION", "\"" + service.serviceType + "#" + serviceAction.getName() + "\"");
OutputStream out = conn.getOutputStream();
out.write(body.toString().getBytes());
out.flush();
out.close();
conn.connect();
InputStream input = null;
try {
input = conn.getInputStream();
} catch (IOException ex) {
// java can throw an exception if he error code is 500 or 404
// or something else than 200
// but the device sends 500 error message with content that
// is required
// this content is accessible with the getErrorStream
input = conn.getErrorStream();
}
if (input != null) {
int response = conn.getResponseCode();
String responseBody = getResponseBody(input);
SAXParserFactory saxParFact = SAXParserFactory.newInstance();
saxParFact.setValidating(false);
saxParFact.setNamespaceAware(true);
ActionMessageResponseParser msgParser = new ActionMessageResponseParser(serviceAction);
StringReader stringReader = new StringReader(responseBody);
InputSource src = new InputSource(stringReader);
try {
SAXParser parser = saxParFact.newSAXParser();
parser.parse(src, msgParser);
} catch (ParserConfigurationException confEx) {
// should never happen
// we throw a runtimeException to notify the env problem
throw new RuntimeException(
"ParserConfigurationException during SAX parser creation, please check your env settings:"
+ confEx.getMessage());
} catch (SAXException saxEx) {
// kind of tricky but better than nothing..
upnpEx = new UPNPResponseException(899, saxEx.getMessage());
} finally {
try {
input.close();
} catch (IOException ex) {
// ignore
}
}
if (upnpEx == null) {
if (response == HttpURLConnection.HTTP_OK) {
rtrVal = msgParser.getActionResponse();
} else if (response == HttpURLConnection.HTTP_INTERNAL_ERROR) {
upnpEx = msgParser.getUPNPResponseException();
} else {
ioEx = new IOException("Unexpected server HTTP response:" + response);
}
}
}
try {
out.close();
} catch (IOException ex) {
// ignore
}
conn.disconnect();
if (upnpEx != null) {
throw upnpEx;
}
if (rtrVal == null && ioEx == null) {
ioEx = new IOException("Unable to receive a response from the UPNP device");
}
if (ioEx != null) {
throw ioEx;
}
return rtrVal;
}
