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Commit 61df32686d88f93fa0e5d348e13cf573e2a1665d

Authored by Eduardo Santos
1 parent ffdf73eb
Exists in master and in 2 other branches 3,1, 3.1

Adiciona timeout forçado na coleta de impressoras

Showing 2 changed files with 98 additions and 4 deletions   Show diff stats
Controller/PrinterController.php
  Diff comments   View file @61df326
... ... @@ -612,13 +612,13 @@ class PrinterController extends Controller
612 612 {
613 613 $n_printers = $this->em->createQuery('SELECT count(p) FROM CocarBundle:Printer p')->getSingleScalarResult();
614 614  
615   - $limit = 500;
  615 + $limit = 20;
616 616 $iterations = (int)($n_printers / $limit);
617 617 $iterations = $iterations + 1;
618 618  
619 619 $i = 0;
620 620 while ($i < $iterations) {
621   - // O objetivo é executar a coleta a cada 1000 impressoras
  621 + // O objetivo é executar a coleta a cada $limit impressoras
622 622 $offset = $limit * $i;
623 623 $this->selectPrinters($limit, $offset);
624 624 $i = $i + 1;
... ... @@ -653,9 +653,12 @@ class PrinterController extends Controller
653 653 $community = $printer->getCommunitySnmpPrinter();
654 654 $host = $printer->getHost();
655 655  
656   - $this->get('logger')->info("Coletando impressora $host | ID ".$printer->getId());
  656 + $this->get('logger')->info("Coletando impressora $host | ID ".$printer->getId());
  657 + $arrBundle = $this->get('kernel')->getBundles();
  658 + $rootDir = $arrBundle['CocarBundle']->getPath();
  659 + $script = $rootDir . "/Resources/scripts/timeout3";
657 660  
658   - $com = "snmpwalk -O qv -v 1 -c $community $host 1.3.6.1.2.1.43.10.2.1.4.1.1";
  661 + $com = "$script snmpwalk -O qv -v 1 -c $community $host 1.3.6.1.2.1.43.10.2.1.4.1.1";
659 662  
660 663 if($outPut = shell_exec($com))
661 664 {
... ...
Resources/scripts/timeout3 0 → 100755
  Diff comments   View file @61df326
... ... @@ -0,0 +1,91 @@
  1 +#!/bin/bash
  2 +#
  3 +# The Bash shell script executes a command with a time-out.
  4 +# Upon time-out expiration SIGTERM (15) is sent to the process. If the signal
  5 +# is blocked, then the subsequent SIGKILL (9) terminates it.
  6 +#
  7 +# Based on the Bash documentation example.
  8 +
  9 +# Hello Chet,
  10 +# please find attached a "little easier" :-) to comprehend
  11 +# time-out example. If you find it suitable, feel free to include
  12 +# anywhere: the very same logic as in the original examples/scripts, a
  13 +# little more transparent implementation to my taste.
  14 +#
  15 +# Dmitry V Golovashkin <Dmitry.Golovashkin@sas.com>
  16 +
  17 +scriptName="${0##*/}"
  18 +
  19 +declare -i DEFAULT_TIMEOUT=9
  20 +declare -i DEFAULT_INTERVAL=1
  21 +declare -i DEFAULT_DELAY=1
  22 +
  23 +# Timeout.
  24 +declare -i timeout=DEFAULT_TIMEOUT
  25 +# Interval between checks if the process is still alive.
  26 +declare -i interval=DEFAULT_INTERVAL
  27 +# Delay between posting the SIGTERM signal and destroying the process by SIGKILL.
  28 +declare -i delay=DEFAULT_DELAY
  29 +
  30 +function printUsage() {
  31 + cat <<EOF
  32 +
  33 +Synopsis
  34 + $scriptName [-t timeout] [-i interval] [-d delay] command
  35 + Execute a command with a time-out.
  36 + Upon time-out expiration SIGTERM (15) is sent to the process. If SIGTERM
  37 + signal is blocked, then the subsequent SIGKILL (9) terminates it.
  38 +
  39 + -t timeout
  40 + Number of seconds to wait for command completion.
  41 + Default value: $DEFAULT_TIMEOUT seconds.
  42 +
  43 + -i interval
  44 + Interval between checks if the process is still alive.
  45 + Positive integer, default value: $DEFAULT_INTERVAL seconds.
  46 +
  47 + -d delay
  48 + Delay between posting the SIGTERM signal and destroying the
  49 + process by SIGKILL. Default value: $DEFAULT_DELAY seconds.
  50 +
  51 +As of today, Bash does not support floating point arithmetic (sleep does),
  52 +therefore all delay/time values must be integers.
  53 +EOF
  54 +}
  55 +
  56 +# Options.
  57 +while getopts ":t:i:d:" option; do
  58 + case "$option" in
  59 + t) timeout=$OPTARG ;;
  60 + i) interval=$OPTARG ;;
  61 + d) delay=$OPTARG ;;
  62 + *) printUsage; exit 1 ;;
  63 + esac
  64 +done
  65 +shift $((OPTIND - 1))
  66 +
  67 +# $# should be at least 1 (the command to execute), however it may be strictly
  68 +# greater than 1 if the command itself has options.
  69 +if (($# == 0 || interval <= 0)); then
  70 + printUsage
  71 + exit 1
  72 +fi
  73 +
  74 +# kill -0 pid Exit code indicates if a signal may be sent to $pid process.
  75 +(
  76 + ((t = timeout))
  77 +
  78 + while ((t > 0)); do
  79 + sleep $interval
  80 + kill -0 $$ || exit 0
  81 + ((t -= interval))
  82 + done
  83 +
  84 + # Be nice, post SIGTERM first.
  85 + # The 'exit 0' below will be executed if any preceeding command fails.
  86 + kill -s SIGTERM $$ && kill -0 $$ || exit 0
  87 + sleep $delay
  88 + kill -s SIGKILL $$
  89 +) 2> /dev/null &
  90 +
  91 +exec "$@"
... ...