bin/retry

   1 #!/bin/bash
   2 # https://github.com/travis-ci/travis-build/blob/cbe49ea239ab37b9b38b5b44d287b7ec7a108c16/lib/travis/build/templates/header.sh#L243-L260
   3 #
   4 # MIT LICENSE
   5 #
   6 # Copyright (c) 2016 Travis CI GmbH <contact@travis-ci.org>
   7 #
   8 # Permission is hereby granted, free of charge, to any person obtaining a copy
   9 # of this software and associated documentation files (the "Software"), to deal
  10 # in the Software without restriction, including without limitation the rights
  11 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12 # copies of the Software, and to permit persons to whom the Software is
  13 # furnished to do so, subject to the following conditions:
  14 #
  15 # The above copyright notice and this permission notice shall be included in
  16 # all copies or substantial portions of the Software.
  17 #
  18 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24 # THE SOFTWARE.
  25 retry() {
  26   local result=0
  27   local count=1
  28
  29   while [ $count -le 3 ]; do
  30     if [ $result -ne 0 ]; then
  31       echo -e "\n${ANSI_RED}The command \"$@\" failed. Retrying, $count of 3.${ANSI_RESET}\n" >&2
  32     fi
  33
  34     "$@" && { result=0 && break; } || result=$?
  35     count=$(($count + 1))
  36     sleep 1
  37   done
  38
  39   if [ $count -gt 3 ]; then
  40     echo -e "\n${ANSI_RED}The command \"$@\" failed 3 times.${ANSI_RESET}\n" >&2
  41   fi
  42
  43   return $result
  44 }
  45
  46 retry $@