public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
HttpSession session = request.getSession(true);
String employeeId = ((LoginPass) session.getAttribute(ShsContext.LOGIN_PASS)).getUsername();
Map<String, String> jsonKeyValMap = new HashMap<String, String>();
String resourceFile =
ShsContext.getStorageDir(employeeId) + request.getParameter(ShsContext.JAR_FILENAME);
String className = request.getParameter(ShsContext.CLASS_NAME);
String additionalParameters = request.getParameter(ShsContext.ADDITIONAL_PARAMETERS);
if (StringUtils.isEmpty(additionalParameters)) {
additionalParameters = "";
}
String command =
ShsContext.getCommand(
ShsContext.SCRIPT_FILENAME, resourceFile, className, additionalParameters);
System.out.println("command=\n" + command);
Process process = ShsContext.execute(command);
InputStream in = process.getInputStream();
InputStream error = process.getErrorStream();
String jobId = null;
if (in.available() > 0) {
System.out.println("Trying to get jobId from InputStream...");
jobId = ShsContext.getJobId(in);
} else {
System.out.println("Trying to get jobId from ErrorInputStream...");
jobId = ShsContext.getJobId(error);
}
if (jobId != null) {
jsonKeyValMap.put("jobid", jobId);
} else {
jsonKeyValMap.put(
"error_msg",
"Failed to submit the MapReduce task, please contact administrator for more details.");
}
in.close();
error.close();
PrintWriter out = response.getWriter();
response.setContentType("application/json");
out.write(ShsContext.getJsonString(jsonKeyValMap));
out.close();
}
