public boolean isValid(HttpServletRequest request, HttpServletResponse response)
throws IOException {
String vsName = request.getParameter("name");
// Added by Behnaz
HttpSession session = request.getSession();
User user = (User) session.getAttribute("user");
if (vsName == null || vsName.trim().length() == 0) {
response.sendError(WebConstants.MISSING_VSNAME_ERROR, "The virtual sensor name is missing");
return false;
}
VSensorConfig sensorConfig = Mappings.getVSensorConfig(vsName);
if (sensorConfig == null) {
response.sendError(
WebConstants.ERROR_INVALID_VSNAME, "The specified virtual sensor doesn't exist.");
return false;
}
// Added by Behnaz.
if (user != null) // meaning, that a login session is active, otherwise we couldn't get there
if (Main.getContainerConfig().isAcEnabled() == true) {
if (user.hasReadAccessRight(vsName) == false && user.isAdmin() == false) // ACCESS_DENIED
{
response.sendError(
WebConstants.ACCESS_DENIED, "Access denied to the specified virtual sensor .");
return false;
}
}
return true;
}
/*
* Returns list of sensors currently loaded in the system
* */
public static String getListOfSensors() {
StringBuilder s = new StringBuilder();
Iterator iter = Mappings.getAllVSensorConfigs();
while (iter.hasNext()) {
VSensorConfig sensorConfig = (VSensorConfig) iter.next();
Double longitude = sensorConfig.getLongitude();
Double latitude = sensorConfig.getLatitude();
String sensor = sensorConfig.getName();
if ((latitude != null) && (longitude != null)) {
Point point =
geometryFactory.createPoint(
new Coordinate(longitude.doubleValue(), latitude.doubleValue()));
coordinates.add(point);
sensors.add(sensor);
s.append(sensor)
.append(" => ")
.append(longitude)
.append(" : ")
.append(latitude)
.append(NEWLINE);
}
}
return s.toString();
}
public void handle(HttpServletRequest request, HttpServletResponse response) throws IOException {
response.setStatus(HttpServletResponse.SC_OK);
String vsName = request.getParameter("name");
VSensorConfig sensorConfig = Mappings.getVSensorConfig(vsName);
if (logger.isInfoEnabled())
logger.info(
new StringBuilder()
.append("Structure request for *")
.append(vsName)
.append("* received.")
.toString());
StringBuilder sb = new StringBuilder("<virtual-sensor name=\"").append(vsName).append("\">\n");
for (DataField df : sensorConfig.getOutputStructure())
sb.append("<field name=\"")
.append(df.getName())
.append("\" ")
.append("type=\"")
.append(df.getType())
.append("\" ")
.append("description=\"")
.append(StringEscapeUtils.escapeXml(df.getDescription()))
.append("\" />\n");
sb.append(
"<field name=\"timed\" type=\"string\" description=\"The timestamp associated with the stream element\" />\n");
sb.append("</virtual-sensor>");
response.setHeader("Cache-Control", "no-store");
response.setDateHeader("Expires", 0);
response.setHeader("Pragma", "no-cache");
response.getWriter().write(sb.toString());
}
public void handle(HttpServletRequest request, HttpServletResponse response) throws IOException {
response.setStatus(HttpServletResponse.SC_OK);
String vsName = request.getParameter("name");
VSensorConfig sensorConfig = Mappings.getVSensorConfig(vsName);
if (logger.isInfoEnabled())
logger.info(
new StringBuilder()
.append("Structure request for *")
.append(vsName)
.append("* received.")
.toString());
StringBuilder sb =
new StringBuilder("<virtual-sensor name=\"")
.append(vsName)
.append("\" last-modified=\"")
.append(new File(sensorConfig.getFileName()).lastModified())
.append("\">\n");
for (KeyValue df : sensorConfig.getAddressing())
sb.append("<predicate key=\"")
.append(StringEscapeUtils.escapeXml(df.getKey().toString()))
.append("\">")
.append(StringEscapeUtils.escapeXml(df.getValue().toString()))
.append("</predicate>\n");
sb.append("</virtual-sensor>");
response.setHeader("Cache-Control", "no-store");
response.setDateHeader("Expires", 0);
response.setHeader("Pragma", "no-cache");
response.getWriter().write(sb.toString());
}
/**
* Case insensitive matching.
*
* @param vsName
* @return
*/
public static VSensorConfig getConfig(String vsName) {
Iterator<VSensorConfig> configs = Mappings.getAllVSensorConfigs();
while (configs.hasNext()) {
VSensorConfig config = configs.next();
if (config.getName().equalsIgnoreCase(vsName)) return config;
}
return null;
}