discord

   1 #!/bin/bash
   2 #
   3 # Discord hook using discord's 'slack compatible' endpoint
   4 #
   5 # Based on: https://github.com/joemiller/git-hooks Campfire notification post-receive hook. Author: Joe Miller
   6 # (http://joemiller.me)
   7 #
   8 # Based on post-receive.irc by Mikael Fridh <frimik@gmail.com> https://gist.github.com/1821358
   9 #
  10
  11 function help_discord () {
  12   echo "Required config settings:"
  13   echo " git config hooks.discord.webhook-url 'https://discord.com/api/webhooks/...'"
  14   echo " git config hooks.discord.show-only-last-commit 'true' #optional"
  15   echo " git config hooks.discord.username 'git' #optional"
  16   echo " git config hooks.discord.repo-nice-name 'MyRepo' #optional"
  17   echo
  18   echo " The webhook url shoud be that returned by the create step - the notifier"
  19   echo "   will add the required parameters to hit the slack-compatible endpoint"
  20
  21 }
  22
  23 function notify_discord() {
  24   oldrev=$(git rev-parse $1)
  25   newrev=$(git rev-parse $2)
  26   refname="$3"
  27
  28   # --- Interpret
  29   # 0000->1234 (create)
  30   # 1234->2345 (update)
  31   # 2345->0000 (delete)
  32   if expr "$oldrev" : '0*$' >/dev/null
  33   then
  34     change_type="create"
  35   else
  36     if expr "$newrev" : '0*$' >/dev/null
  37     then
  38       change_type="delete"
  39     else
  40       change_type="update"
  41     fi
  42   fi
  43
  44   # --- Get the revision types
  45   newrev_type=$(git cat-file -t $newrev 2> /dev/null)
  46   oldrev_type=$(git cat-file -t "$oldrev" 2> /dev/null)
  47   case "$change_type" in
  48     create|update)
  49       rev="$newrev"
  50       rev_type="$newrev_type"
  51       ;;
  52     delete)
  53       rev="$oldrev"
  54       rev_type="$oldrev_type"
  55       ;;
  56   esac
  57
  58   # The revision type tells us what type the commit is, combined with
  59   # the location of the ref we can decide between
  60   #  - working branch
  61   #  - tracking branch
  62   #  - unannoted tag
  63   #  - annotated tag
  64   case "$refname","$rev_type" in
  65     refs/tags/*,commit)
  66       # un-annotated tag
  67       refname_type="tag"
  68       short_refname=${refname##refs/tags/}
  69       ;;
  70     refs/tags/*,tag)
  71       # annotated tag
  72       refname_type="annotated tag"
  73       short_refname=${refname##refs/tags/}
  74       # change recipients
  75       if [ -n "$announcerecipients" ]; then
  76         recipients="$announcerecipients"
  77       fi
  78       ;;
  79     refs/heads/*,commit)
  80       # branch
  81       refname_type="branch"
  82       short_refname=${refname##refs/heads/}
  83       ;;
  84     refs/remotes/*,commit)
  85       # tracking branch
  86       refname_type="tracking branch"
  87       short_refname=${refname##refs/remotes/}
  88       echo >&2 "*** Push-update of tracking branch, $refname"
  89       echo >&2 "***  - no notification generated."
  90       return 0
  91       ;;
  92     *)
  93       # Anything else (is there anything else?)
  94       echo >&2 "*** Unknown type of update to $refname ($rev_type)"
  95       echo >&2 "***  - no notification generated"
  96       return 0
  97       ;;
  98   esac
  99   # plural suffix, default "", changed to "s" if commits > 1
 100   s=""
 101
 102   # Repo name, either Gitolite or normal repo.
 103   if [ -n "$GL_REPO" ]; then
 104     # it's a gitolite repo
 105     repodir=$(basename `pwd`)
 106     repo=$GL_REPO
 107   else
 108     repodir=$(basename `pwd`)
 109     if [ "$repodir" == ".git" ]; then
 110       repodir=`dirname $PWD`
 111       repodir=`basename $repodir`
 112     fi
 113     repo=${repodir%.git}
 114   fi
 115
 116   repoprefix=$(git config hooks.discord.repo-nice-name || git config hooks.irc.prefix || git config hooks.emailprefix || echo "$repo")
 117   onlylast=`git config --get hooks.discord.show-only-last-commit`
 118   onlylast=$onlylast && [ -n "$onlylast" ]
 119
 120   # Get the user information
 121   # If $GL_USER is set we're running under gitolite.
 122   if [ -n "$GL_USER" ]; then
 123     user=$GL_USER
 124   else
 125     user=$USER
 126   fi
 127
 128   case ${change_type} in
 129     "create")
 130       header="New ${refname_type} *${short_refname}* has been created in ${repoprefix}"
 131       single_commit_suffix="commit"
 132       ;;
 133     "delete")
 134       header="$(tr '[:lower:]' '[:upper:]' <<< ${refname_type:0:1})${refname_type:1} *$short_refname* has been deleted from ${repoprefix}"
 135       single_commit_suffix="commit"
 136       ;;
 137     "update")
 138       num=$(git log --pretty=oneline ${1}..${2}|wc -l|tr -d ' ')
 139       branch=${3/refs\/heads\//}
 140
 141       if [ ${num} -gt 1 ]; then
 142         header="${num} new commits *pushed* to *${short_refname}* in ${repoprefix}"
 143         single_commit_suffix="one"
 144         s="s"
 145       else
 146         header="A new commit has been *pushed* to *${short_refname}* in ${repoprefix}"
 147         single_commit_suffix="one"
 148       fi
 149
 150       ;;
 151     *)
 152       # most weird ... this should never happen
 153       echo >&2 "*** Unknown type of update to $refname ($rev_type)"
 154       echo >&2 "***  - notifications will probably screw up."
 155       ;;
 156   esac
 157   if $onlylast && [[ "${change_type}" != "delete" ]]; then
 158     header="$header, showing last $single_commit_suffix:"
 159   fi
 160
 161
 162   if [[ "${change_type}" != "delete" && "${refname_type}" == "branch" ]]; then
 163     reporoot=`git config --get hooks.discord.repos-root`
 164
 165     urlformat=
 166
 167     formattedurl=""
 168     if [ -n "$urlformat" ]; then
 169       formattedurl="<${urlformat}|%h> "
 170     fi
 171
 172
 173     nl="\\\\n"
 174
 175     if [[ "${change_type}" == "update" ]]; then
 176       start="${1}"
 177     else
 178       start="HEAD"
 179     fi
 180
 181     end="${2}"
 182
 183     # merge `git log` output with $header
 184     if $onlylast; then
 185       countarg="-n 1"
 186     else
 187       countarg=""
 188     fi
 189
 190     # Process the log and escape double quotes; assuming for now that committer names don't have five semicolons in them
 191     log_out=$( git log --pretty=format:"%cN;;;;;${formattedurl}%s" $countarg ${start}..${end} \
 192              | sed -e 's/\\/\\\\/g' \
 193              | sed -e 's/"/\\"/g' \
 194              | sed -e 's/\(.*\);;;;;\(.*\)/{"title":"\1","value":"\2","short":false},/' )
 195
 196     fields=${log_out%?}
 197
 198     attachments="[{ \"fallback\" : \"${header}\", \"color\" : \"good\", \"fields\" : [${fields}]}]"
 199   fi
 200
 201   if [ -n "${attachments}" ] && [[ "${attachments}" != "" ]]; then
 202     msg=$(echo -e "\"text\":\"${header}\", \"attachments\" : $attachments")
 203   else
 204     msg=$(echo -e "\"text\":\"${header}\"")
 205   fi
 206
 207   # slack API uses \n substitution for newlines
 208   # msg=$(echo "${msg}" | perl -p -e 's/\+/&#43;/mg')
 209
 210   webhook_url=$(git config --get hooks.discord.webhook-url)
 211   username=$(git config --get hooks.discord.username)
 212
 213   if [ -z "$webhook_url" ]; then
 214     echo "ERROR: config settings not found"
 215     help
 216     exit 1
 217   fi
 218
 219   webhook_url="$webhook_url/slack"
 220
 221   payload="{${msg}"
 222
 223   if [ -n "$username" ]; then
 224     payload="$payload, \"username\": \"$username\""
 225   fi
 226
 227   payload="$payload}"
 228
 229   if [ -n "$DEBUG" ]; then
 230     echo "POST $webhook_url"
 231     echo "payload=$payload"
 232     return
 233   fi
 234
 235   curl -s \
 236       -d "payload=$payload" \
 237       "$webhook_url" \
 238       >/dev/null
 239 }