FWD » Core Development » Runtime Infrastructure

   private static void setBgrProcessLog(String[] args) {

      String outputToFileConfig = Arrays.stream(args)

                                        .filter(arg -> arg != null && arg.startsWith("clientConfig:outputToFile"))

                                        .findAny()

                                        .orElse(null);

      if (outputToFileConfig == null)

      {

         return;

      }

      String outputToFile = outputToFileConfig.replace("clientConfig:outputToFile=", "");

      try

      {

         outputToFile = outputToFile.replace("%pid%", getCurrentProcessPid().toString());

         System.setOut(new PrintStream(new FileOutputStream(outputToFile), true));

      }

      catch (Exception e)

      {

         System.err.println("ClientDriver: Unable to redirect stdout to clientConfig:outputToFile " + outputToFile);

      }

   }

   private static Integer getCurrentProcessPid() throws Exception {

      java.lang.management.RuntimeMXBean runtime =

         java.lang.management.ManagementFactory.getRuntimeMXBean();

      java.lang.reflect.Field jvm = runtime.getClass().getDeclaredField("jvm");

      jvm.setAccessible(true);

      sun.management.VMManagement mgmt = (sun.management.VMManagement) jvm.get(runtime);

      java.lang.reflect.Method pid_method =

         mgmt.getClass().getDeclaredMethod("getProcessId");

      pid_method.setAccessible(true);

      return (Integer) pid_method.invoke(mgmt);

   }

      // TODO: fix when spawner sends the arg

      setBgrProcessLog(new String[] { "clientConfig:outputToFile=output_to_file_%pid%.log" });