iankelling.org Git - buildscripts/blob - go

   1 #!/bin/bash
   2 # Copyright (C) 2019 Ian Kelling
   3 # SPDX-License-Identifier: AGPL-3.0-or-later
   4
   5 # usage: no args, run to install latest go.
   6
   7 if [ -z "$BASH_VERSION" ]; then echo "error: shell is not bash" >&2; exit 1; fi
   8
   9 shopt -s inherit_errexit 2>/dev/null ||: # ignore fail in bash < 4.4
  10 source /a/bin/errhandle/err
  11
  12 force=false
  13 case $1 in
  14   -f) force=true ;;
  15 esac
  16
  17 m() { printf "$pre %s\n"  "$*"; "$@"; }
  18 e() { printf "$pre %s\n"  "$*"; }
  19 err() { echo "[$(date +'%Y-%m-%d %H:%M:%S%z')]: $0: $*" >&2; }
  20
  21
  22
  23 m cd /a/opt/go.git
  24
  25 up=true
  26 install=false
  27
  28 if ! $force; then
  29   yesterday=$(( $(date +%s) - 60*60*24 ))
  30   # no need to check for updates on go more than once a day
  31   if (( $(stat -c %Y FETCH_HEAD) > yesterday )); then
  32     up=false
  33   fi
  34
  35   # update will get overwritten if we dont do it on central host.
  36   if [[ -e /a/bin/bash_unpublished/source-state ]]; then
  37     source /a/bin/bash_unpublished/source-state
  38     if [[ $HOSTNAME != "$HOST2" ]]; then
  39       up=false
  40     fi
  41   fi
  42 fi
  43
  44 shopt -s nullglob
  45
  46 f=$(
  47   for f in go*.tar.gz; do
  48     echo $f
  49   done | sort -Vr | head -n1
  50  )
  51 if [[ ! $f ]]; then
  52   up=true
  53 fi
  54
  55 if $up; then
  56   m git fetch --tags
  57   touch ~/.local/gofetch
  58
  59   vers=($(git tag | sort -Vr | grep -E '^go[0-9.]+$' | head))
  60
  61   ver=${vers[0]}
  62   dl() {
  63     arch=$(dpkg --print-architecture)
  64     f=${ver}.linux-${arch}.tar.gz
  65     if [[ -e $f ]]; then
  66       timestamp=$(stat -c %Y $f)
  67     else
  68       timestamp=0
  69     fi
  70     m wget -nv -N https://dl.google.com/go/$f || ret=$?
  71   }
  72   dl
  73   # 8 is return code for 404. for a new release, they might not have a binary out yet
  74   if [[ $ret == 8 ]]; then
  75     ver=${vers[1]}
  76     dl
  77   fi
  78
  79   new_timestamp=$(stat -c %Y $f)
  80   if [[ $timestamp != $new_timestamp ]]; then
  81     install=true
  82   fi
  83 fi
  84
  85 if $install || [[  ! -e /usr/local/go/bin/go ]]; then
  86   m sudo rm -rf /usr/local/go
  87   m sudo tar -C /usr/local -xzf $f
  88 fi
  89
  90 for x in go*.tar.gz; do
  91   if [[ $x == $f ]]; then continue; fi
  92   rm -fv $x
  93 done