git hook for chef deployments

post-receive

#!/bin/sh

#TODO
# add error checking to knife operations

IRC_URL="http://irc.example.com/irc.php"
RUNDECK_URL="https://rundeck.example.com/rundeck/"
template_msg="modified template:"
node_msg="modified node:"
envr_msg="modified environment:"
role_msg="modified role:"
cookbook_msg="modified cookbook:"
boot_msg="boot-node started in rundeck - progress: "
run_msg="run-client started in rundeck - progres: "
from="gitolite-chef-server"


# Safety check
if [ -z "$GIT_DIR" ]; then
    echo "Don't run this script from the command line." >&2
    exit 1
fi

tmpdir=/var/tmp/$$.$RANDOM
mkdir $tmpdir

read oldrev newrev refname
BRANCH=${refname#refs/heads/} 
files=`git diff-tree --stat --summary --find-copies-harder $oldrev..$newrev`
for i in $files
do
  case "$i" in
    data_bags/nodes/*)
      k=`echo $i | cut -f"3" -d"/"`
      j=`basename $k .json`
      if [ $j = "template" ]; then
                    curl  -X POST -d 'json={"msg":"'${template_msg}' '${j}'","from":"'${from}'"}'  ${IRC_URL}
        exit 0
      fi
      git show HEAD:$i > $tmpdir/$j.json
      knife data bag from file nodes $tmpdir/$j.json
      curl  -X POST -d 'json={"msg":"'${node_msg}' '${j}'","from":"'${from}'"}'  ${IRC_URL}
      search=`knife node list | grep $j`
      STATUS=$?
      #STATUS=1
      if [ $STATUS -ne 0 ]; then
        # boostrap node
        IP=`sed -n '/eth0/{n; s/^.*target":"\(.*\)".*/\1/p}' $tmpdir/$j.json`
        FQDN=`sed -n 's/^.*fqdn".*"\(.*\)".*/\1/p' $tmpdir/$j.json`
        ENVIRONMENT=`sed -n 's/^.*environment".*"\(.*\)".*/\1/p' $tmpdir/$j.json`
        #echo "the ip: $IP and the env: $ENVIRONMENT"
        out=`ssh chef@rundeck.example.com run -j "boot-node" -p chef-workstation -- -ip ${IP} -fqdn ${FQDN} -env ${ENVIRONMENT}`
        # the url changed from http://rundeck.example.com:4440/
        # to https://rundeck.example.com/rundeck/
        #url=`echo $out | sed 's/.*<\(.*\)>$/\1/'`
        url=`echo $out | sed 's/.*4440\/\(.*\)>$/\1/'`
        url=$RUNDECK_URL$url
        curl  -X POST -d 'json={"msg":"'${boot_msg}' '${url}'","from":"'${from}'"}'  ${IRC_URL}
        # run-client
        out=`ssh chef@rundeck.example.com run -j "run-chef-client" -p chef-workstation -- -fqdn ${FQDN}`
        url=`echo $out | sed 's/.*4440\/\(.*\)>$/\1/'`
        url=$RUNDECK_URL$url
        curl  -X POST -d 'json={"msg":"'${run_msg}' '${url}'","from":"'${from}'"}'  ${IRC_URL}
      else
        # run-client
        fqdn=`echo ${search} | xargs knife node show | head -n 1 | awk '{print $3}'`
        out=`ssh chef@rundeck.example.com run -j "run-chef-client" -p chef-workstation -- -fqdn $fqdn`
        url=`echo $out | sed 's/.*4440\/\(.*\)>$/\1/'`
        url=$RUNDECK_URL$url
        curl  -X POST -d 'json={"msg":"'${run_msg}' '${url}'","from":"'${from}'"}'  ${IRC_URL}
      fi
      ;;
    roles/*)
      k=`echo $i | cut -f"2" -d"/"`
      #knife data bag from file nodes $tmpdir/$j.json
      #curl  -X POST -d 'json={"msg":"se modifico el node: '${j}'","from":"'${from}'"}'  http://rundeck.example.com/irc.php
      #echo "from roles!"
      j=`basename $k .rb`
      git show HEAD:$i > $tmpdir/$k
      knife role from file $tmpdir/$k
      curl  -X POST -d 'json={"msg":"'${role_msg}' '${j}'","from":"'${from}'"}'  ${IRC_URL}
      ;;
    environments/*)
      k=`echo $i | cut -f"2" -d"/"`
      j=`basename $k .rb`
      git show HEAD:$i > $tmpdir/$k
      knife environment from file $tmpdir/$k
      curl  -X POST -d 'json={"msg":"'${envr_msg}' '${j}'","from":"'${from}'"}'  ${IRC_URL}
      ;;
    cookbooks/*)
      k=`echo $i | cut -f"2" -d"/"`
      #echo "knife cookbook upload $k from $tmpdir"
      GIT_WORK_TREE=$tmpdir git checkout -f
      cd $tmpdir
      knife cookbook upload $k
      curl  -X POST -d 'json={"msg":"'${cookbook_msg}' '${k}'","from":"'${from}'"}'  ${IRC_URL}
      ;;
    */files/*)
      k=`echo $i | cut -f"2" -d"/"`
      curl  -X POST -d 'json={"msg":"'${cookbook_msg}' '${k}'","from":"'${from}'"}' ${IRC_URL}
      ;;
    */templates/*)
      k=`echo $i | cut -f"2" -d"/"`
      curl  -X POST -d 'json={"msg":"'${cookbook_msg}' '${k}'","from":"'${from}'"}'  ${IRC_URL}
      ;;
    *)
      # Anything else (is there anything else?)
      #echo "anything else ... $i"
      #exit 1
      ;;
  esac
done
rm -fr $tmpdir
exit 0

template.json

chef-server/data_bags/nodes/template.json 
{
  "id": "ID",
  "interfaces": [ 
    {
      "device": "eth0",
      "target":"IP",
      "hwaddr":"HWADDR"
    }
  ],
  "fqdn": "FQDN",
  "environment": "ENVIRONMENT",
  "run_list": "role[base]",
  "cname": "CNAME"
}