ci/lib-travisci.sh

   1 # Library of functions shared by all CI scripts
   2
   3 skip_branch_tip_with_tag () {
   4         # Sometimes, a branch is pushed at the same time the tag that points
   5         # at the same commit as the tip of the branch is pushed, and building
   6         # both at the same time is a waste.
   7         #
   8         # Travis gives a tagname e.g. v2.14.0 in $TRAVIS_BRANCH when
   9         # the build is triggered by a push to a tag.  Let's see if
  10         # $TRAVIS_BRANCH is exactly at a tag, and if so, if it is
  11         # different from $TRAVIS_BRANCH.  That way, we can tell if
  12         # we are building the tip of a branch that is tagged and
  13         # we can skip the build because we won't be skipping a build
  14         # of a tag.
  15
  16         if TAG=$(git describe --exact-match "$TRAVIS_BRANCH" 2>/dev/null) &&
  17                 test "$TAG" != "$TRAVIS_BRANCH"
  18         then
  19                 echo "$(tput setaf 2)Tip of $TRAVIS_BRANCH is exactly at $TAG$(tput sgr0)"
  20                 exit 0
  21         fi
  22 }
  23
  24 # Save some info about the current commit's tree, so we can skip the build
  25 # job if we encounter the same tree again and can provide a useful info
  26 # message.
  27 save_good_tree () {
  28         echo "$(git rev-parse $TRAVIS_COMMIT^{tree}) $TRAVIS_COMMIT $TRAVIS_JOB_NUMBER $TRAVIS_JOB_ID" >>"$good_trees_file"
  29         # limit the file size
  30         tail -1000 "$good_trees_file" >"$good_trees_file".tmp
  31         mv "$good_trees_file".tmp "$good_trees_file"
  32 }
  33
  34 # Skip the build job if the same tree has already been built and tested
  35 # successfully before (e.g. because the branch got rebased, changing only
  36 # the commit messages).
  37 skip_good_tree () {
  38         if ! good_tree_info="$(grep "^$(git rev-parse $TRAVIS_COMMIT^{tree}) " "$good_trees_file")"
  39         then
  40                 # Haven't seen this tree yet, or no cached good trees file yet.
  41                 # Continue the build job.
  42                 return
  43         fi
  44
  45         echo "$good_tree_info" | {
  46                 read tree prev_good_commit prev_good_job_number prev_good_job_id
  47
  48                 if test "$TRAVIS_JOB_ID" = "$prev_good_job_id"
  49                 then
  50                         cat <<-EOF
  51                         $(tput setaf 2)Skipping build job for commit $TRAVIS_COMMIT.$(tput sgr0)
  52                         This commit has already been built and tested successfully by this build job.
  53                         To force a re-build delete the branch's cache and then hit 'Restart job'.
  54                         EOF
  55                 else
  56                         cat <<-EOF
  57                         $(tput setaf 2)Skipping build job for commit $TRAVIS_COMMIT.$(tput sgr0)
  58                         This commit's tree has already been built and tested successfully in build job $prev_good_job_number for commit $prev_good_commit.
  59                         The log of that build job is available at https://travis-ci.org/$TRAVIS_REPO_SLUG/jobs/$prev_good_job_id
  60                         To force a re-build delete the branch's cache and then hit 'Restart job'.
  61                         EOF
  62                 fi
  63         }
  64
  65         exit 0
  66 }
  67
  68 check_unignored_build_artifacts ()
  69 {
  70         ! git ls-files --other --exclude-standard --error-unmatch \
  71                 -- ':/*' 2>/dev/null ||
  72         {
  73                 echo "$(tput setaf 1)error: found unignored build artifacts$(tput sgr0)"
  74                 false
  75         }
  76 }
  77
  78 # Set 'exit on error' for all CI scripts to let the caller know that
  79 # something went wrong.
  80 # Set tracing executed commands, primarily setting environment variables
  81 # and installing dependencies.
  82 set -ex
  83
  84 cache_dir="$HOME/travis-cache"
  85 good_trees_file="$cache_dir/good-trees"
  86
  87 mkdir -p "$cache_dir"
  88
  89 skip_branch_tip_with_tag
  90 skip_good_tree
  91
  92 if test -z "$jobname"
  93 then
  94         jobname="$TRAVIS_OS_NAME-$CC"
  95 fi
  96
  97 export DEVELOPER=1
  98 export DEFAULT_TEST_TARGET=prove
  99 export GIT_PROVE_OPTS="--timer --jobs 3 --state=failed,slow,save"
 100 export GIT_TEST_OPTS="--verbose-log -x --immediate"
 101 export GIT_TEST_CLONE_2GB=YesPlease
 102 if [ "$jobname" = linux-gcc ]; then
 103         export CC=gcc-8
 104 fi
 105
 106 case "$jobname" in
 107 linux-clang|linux-gcc)
 108         export GIT_TEST_HTTPD=YesPlease
 109
 110         # The Linux build installs the defined dependency versions below.
 111         # The OS X build installs the latest available versions. Keep that
 112         # in mind when you encounter a broken OS X build!
 113         export LINUX_P4_VERSION="16.2"
 114         export LINUX_GIT_LFS_VERSION="1.5.2"
 115
 116         P4_PATH="$HOME/custom/p4"
 117         GIT_LFS_PATH="$HOME/custom/git-lfs"
 118         export PATH="$GIT_LFS_PATH:$P4_PATH:$PATH"
 119         ;;
 120 osx-clang|osx-gcc)
 121         # t9810 occasionally fails on Travis CI OS X
 122         # t9816 occasionally fails with "TAP out of sequence errors" on
 123         # Travis CI OS X
 124         export GIT_SKIP_TESTS="t9810 t9816"
 125         ;;
 126 GETTEXT_POISON)
 127         export GETTEXT_POISON=YesPlease
 128         ;;
 129 esac