/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
public void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("application/json");
response.setCharacterEncoding("UTF-8");
request.setCharacterEncoding("UTF-8");
// PrintWriter out = response.getWriter();
OutputStream outStream = null;
try {
long start = 0;
long end = 0;
String blockid = null;
try {
if (request.getParameter(AllConstants.api_entryPoints.request_api_start) != null) {
start =
Long.parseLong(request.getParameter(AllConstants.api_entryPoints.request_api_start));
}
if (request.getParameter(AllConstants.api_entryPoints.request_api_end) != null) {
end = Long.parseLong(request.getParameter(AllConstants.api_entryPoints.request_api_end));
}
if (request.getParameter(AllConstants.api_entryPoints.request_api_blockid) != null) {
blockid = request.getParameter(AllConstants.api_entryPoints.request_api_blockid);
if (blockid.length() < 5) {}
}
} catch (Exception ex) {
ex.printStackTrace();
}
String loginID = "leoncool";
if (request.getParameter(AllConstants.api_entryPoints.request_api_loginid) != null) {
loginID = request.getParameter(AllConstants.api_entryPoints.request_api_loginid);
}
UserDAO userDao = new UserDAO();
if (!userDao.existLogin(loginID)) {
ReturnParser.outputErrorException(
response, AllConstants.ErrorDictionary.Unauthorized_Access, null, null);
return;
}
SubjectDAO subjDao = new SubjectDAO();
Subject subject = (Subject) subjDao.findHealthSubject(loginID); // Retreive
if (subject == null) {
ReturnParser.outputErrorException(
response,
AllConstants.ErrorDictionary.SYSTEM_ERROR_NO_DEFAULT_HEALTH_SUBJECT,
null,
null);
return;
}
String streamID = ServerUtil.getHealthStreamID(ServletPath(request));
DatastreamDAO dstreamDao = new DatastreamDAO();
DBtoJsonUtil dbtoJUtil = new DBtoJsonUtil();
Datastream datastream = dstreamDao.getDatastream(streamID, true, false);
if (blockid != null && dstreamDao.getDatastreamBlock(blockid) == null) {
ReturnParser.outputErrorException(
response, AllConstants.ErrorDictionary.Invalid_Datablock_ID, null, blockid);
return;
}
if (datastream == null) {
ReturnParser.outputErrorException(
response, AllConstants.ErrorDictionary.Unknown_StreamID, null, streamID);
return;
}
HashMap<String, String> mapUnits = new HashMap<String, String>();
HashMap<String, String> allUnits = new HashMap<String, String>();
if (request.getParameter(AllConstants.api_entryPoints.request_api_unit_id) != null
&& request.getParameter(AllConstants.api_entryPoints.request_api_unit_id).length() > 0) {
String[] unitids =
request.getParameter(AllConstants.api_entryPoints.request_api_unit_id).split(",");
System.out.println("unitids:size:" + unitids.length);
allUnits = dbtoJUtil.ToDatastreamUnitsMap(datastream);
System.out.println("units size:" + datastream.getDatastreamUnitsList().size());
for (String id : unitids) {
if (id.length() < 3) {
// error
return;
} else {
if (allUnits.get(id) == null) {
// error
System.out.println("cannot find id" + id + "");
return;
} else {
mapUnits.put(id, id);
}
}
}
}
System.out.println("mapUnits.size():" + mapUnits.size() + ", " + mapUnits);
Gson gson = new Gson();
int debug = 1;
if (debug == 1) {
System.out.println("debuging.....going to hbase");
HBaseDatapointDAO diDao = new HBaseDatapointDAO();
System.out.println("datastreamID:" + datastream.getStreamId());
HBaseDataImport hbaseexport = null;
try {
hbaseexport = diDao.exportDatapoints(streamID, start, end, blockid, mapUnits, null, null);
} catch (ErrorCodeException ex) {
ex.printStackTrace();
ReturnParser.outputErrorException(
response, AllConstants.ErrorDictionary.Internal_Fault, null, null);
return;
} catch (Throwable ex) {
ex.printStackTrace();
ReturnParser.outputErrorException(
response, AllConstants.ErrorDictionary.Internal_Fault, null, null);
return;
}
if (hbaseexport != null) {
hbaseexport.setUnits_list(
dbtoJUtil.convertDatastream(datastream, mapUnits).getUnits_list());
} else {
hbaseexport = new HBaseDataImport();
hbaseexport.setBlock_id(blockid);
hbaseexport.setData_points(new ArrayList<JsonDataPoints>());
hbaseexport.setDatastream_id(streamID);
hbaseexport.setUnits_list(
dbtoJUtil.convertDatastream(datastream, mapUnits).getUnits_list());
// hbaseexport.setDeviceid(streamID);
}
outStream = null;
boolean iftoZip = true;
String encodings = request.getHeader("Accept-Encoding");
if (encodings != null && encodings.indexOf("gzip") != -1 && iftoZip == true) {
// Go with GZIP
response.setHeader("Content-Encoding", "gzip");
outStream = new GZIPOutputStream(response.getOutputStream());
} else {
outStream = response.getOutputStream();
}
response.setHeader("Vary", "Accept-Encoding");
Date timerStart = new Date();
JsonElement je = gson.toJsonTree(hbaseexport);
JsonObject jo = new JsonObject();
jo.addProperty(AllConstants.ProgramConts.result, AllConstants.ProgramConts.succeed);
jo.add("datapoints_list", je);
OutputStreamWriter osWriter = new OutputStreamWriter(outStream);
JsonWriter jwriter = new JsonWriter(osWriter);
String callbackStr = null;
if (request.getParameter(AllConstants.api_entryPoints.requset_api_callback) != null) {
callbackStr = request.getParameter(AllConstants.api_entryPoints.requset_api_callback);
osWriter.append(callbackStr + "(");
}
gson.toJson(jo, jwriter);
if (callbackStr != null) {
osWriter.append(");");
}
jwriter.close();
Date timerEnd = new Date();
System.out.println(
"Json Time takes:"
+ (timerEnd.getTime() - timerStart.getTime()) / (1000.00)
+ "seconds");
osWriter.close();
outStream.close();
} else {
String encodings = request.getHeader("Accept-Encoding");
boolean iftoZip = true;
if (encodings != null && encodings.indexOf("gzip") != -1 && iftoZip == true) {
// Go with GZIP
response.setHeader("Content-Encoding", "gzip");
outStream = new GZIPOutputStream(response.getOutputStream());
} else {
outStream = response.getOutputStream();
}
response.setHeader("Vary", "Accept-Encoding");
File inputFile = new File("E:/IC_Dropbox/Dropbox/java/healthbook/sample_data/download.txt");
// File inputFile = new
// File("F:/Dropbox/Dropbox/java/healthbook/sample_data/download.txt");
BufferedReader reader = new BufferedReader(new FileReader(inputFile));
String inputLine;
while ((inputLine = reader.readLine()) != null) {
outStream.write(inputLine.getBytes());
// out.print(inputLine);
}
outStream.close();
}
} catch (Exception ex) {
ex.printStackTrace();
ReturnParser.outputErrorException(
response, AllConstants.ErrorDictionary.Internal_Fault, null, null);
return;
} finally {
System.out.println("running finally");
// out.close();
if (outStream != null) {
outStream.close();
}
}
}
