src/ci/shared.sh

   1 #!/bin/false
   2
   3 # This file is intended to be sourced with `. shared.sh` or
   4 # `source shared.sh`, hence the invalid shebang and not being
   5 # marked as an executable file in git.
   6
   7 # See http://unix.stackexchange.com/questions/82598
   8 function retry {
   9   echo "Attempting with retry:" "$@"
  10   local n=1
  11   local max=5
  12   while true; do
  13     "$@" && break || {
  14       if [[ $n -lt $max ]]; then
  15         sleep $n  # don't retry immediately
  16         ((n++))
  17         echo "Command failed. Attempt $n/$max:"
  18       else
  19         echo "The command has failed after $n attempts."
  20         return 1
  21       fi
  22     }
  23   done
  24 }
  25
  26 if ! declare -F travis_fold; then
  27   if [ "${TRAVIS-false}" = 'true' ]; then
  28     # This is a trimmed down copy of
  29     # https://github.com/travis-ci/travis-build/blob/master/lib/travis/build/templates/header.sh
  30     travis_fold() {
  31       echo -en "travis_fold:$1:$2\r\033[0K"
  32     }
  33     travis_time_start() {
  34       travis_timer_id=$(printf %08x $(( RANDOM * RANDOM )))
  35       travis_start_time=$(travis_nanoseconds)
  36       echo -en "travis_time:start:$travis_timer_id\r\033[0K"
  37     }
  38     travis_time_finish() {
  39       travis_end_time=$(travis_nanoseconds)
  40       local duration=$(($travis_end_time-$travis_start_time))
  41       local msg="travis_time:end:$travis_timer_id"
  42       echo -en "\n$msg:start=$travis_start_time,finish=$travis_end_time,duration=$duration\r\033[0K"
  43     }
  44     if [ $(uname) = 'Darwin' ]; then
  45       travis_nanoseconds() {
  46         date -u '+%s000000000'
  47       }
  48     else
  49       travis_nanoseconds() {
  50         date -u '+%s%N'
  51       }
  52     fi
  53   else
  54     travis_fold() { return 0; }
  55     travis_time_start() { return 0; }
  56     travis_time_finish() { return 0; }
  57   fi
  58 fi