tools/sfsnapshotgit

   1 #!/bin/bash
   2 # sfsnapshotgit - Snapshot script for Git repository
   3 # Original author: Thomas Guyot-Sionnest <tguyot@gmail.com>
   4 #
   5 # Given an optional branch name (master by default), this script creates
   6 # a snapshot from the tip of the branch and move it to ~/staging/.
   7 # The repository, origin and destination directory can be overridden
   8 # with environment variable (see below)
   9
  10 # Handle command errors (-e) and coder sleep deprivation issues (-u)
  11 set -eu
  12 trap 'echo "An error occurred at line $LINENO"; exit 1' EXIT
  13
  14 # Send all command output to STDERR while allowing us to write to STDOUT
  15 # using fd 3
  16 exec 3>&1 1>&2
  17
  18 # Git repository, origin and destination directory can be overridden by
  19 # setting SFSNAP_REPO, SFSNAP_ORIGIN and SFSNAP_DEST respectively from the
  20 # caller The defaults are:
  21 SFSNAP_REPO=${SFSNAP_REPO-~/staging/nagiosplugins}
  22 SFSNAP_ORIGIN=${SFSNAP_ORIGIN-origin}
  23 SFSNAP_DEST=${SFSNAP_DEST-~/staging/snapshot}
  24
  25 # If one argument is given, this is the branch to create the snapshot from
  26 if [ $# -eq 0 ]
  27 then
  28         HEAD='master'
  29 elif [ $# -eq 1 ]
  30 then
  31         if [ -z "$1" ]
  32         then
  33                 echo "If specified, the refspec must not be empty"
  34                 exit
  35         fi
  36         HEAD="$1"
  37 else
  38         echo "Too many arguments"
  39         exit
  40 fi
  41
  42 # Clean up and pull
  43 cd "$SFSNAP_REPO"
  44 # Sometimes "make dist" can modify versioned files so we must reset first
  45 git reset --hard
  46 git clean -qfdx
  47 # Any branch used to create snapshots must already exist
  48 git checkout "$HEAD"
  49 git pull "$SFSNAP_ORIGIN" "$HEAD"
  50 # Tags are important for git-describe
  51 git fetch --tags "$SFSNAP_ORIGIN"
  52
  53 # Write our snapshot version string (similar to NP-VERSION-GEN) to "release"
  54 VS=$(git describe --abbrev=4 HEAD)
  55 VS=${VS#release-}
  56
  57 # Configure and dist only if needed
  58 if [ ! -e "$SFSNAP_DEST/nagios-plugins-$VS.tar.gz" ]
  59 then
  60         tools/setup
  61         ./configure
  62         make dist VERSION=$VS RELEASE=snapshot
  63         cp nagios-plugins-$VS.tar.gz "$SFSNAP_DEST/"
  64 fi
  65
  66 # fd 3 goes to STDOUT; print the generated filename
  67 echo "nagios-plugins-$VS.tar.gz" 1>&3
  68
  69 trap - EXIT
  70