.travis.yml

# Environment variables
env:
  global:
    - CFLAGS=-Werror

# CI jobs
jobs:
  include:
    # Test stage
    - stage: test
      env:
        - STAGE=test
        - NAME=test
      script:
        # Strict compilation of library only (tests use gcc features)
        - make CFLAGS+=-pedantic
        # Run tests
        - make test
        # Find code size with smallest configuration
        - make clean size OBJ=equeue.o | tee sizes

        # Update status with code size, compare with master if possible
        - |
          if [ "$TRAVIS_TEST_RESULT" -eq 0 ]
          then
              CURR=$(tail -n1 sizes | awk '{print $1}')
              PREV=$(curl -u "$GEKY_BOT_STATUSES" https://api.github.com/repos/$TRAVIS_REPO_SLUG/status/master \
                  | jq -re "select(.sha != \"$TRAVIS_COMMIT\")
                      | .statuses[] | select(.context == \"$STAGE/$NAME\").description
                      | capture(\"code size is (?<size>[0-9]+)\").size" \
                  || echo 0)

              STATUS="Passed, code size is ${CURR}B"
              if [ "$PREV" -ne 0 ]
              then
                  STATUS="$STATUS ($(python -c "print '%+.2f' % (100*($CURR-$PREV)/$PREV.0)")%)"
              fi
          fi

    # Runtime profiling stage
    - stage: test
      env:
        - STAGE=test
        - NAME=prof
      script:
        # Relative profiling against master
        - if ( git clone https://github.com/geky/equeue master &&
                make -s -C master prof | tee master/runtime ) ;
          then
            cat master/runtime | make prof | tee runtime ;
          else
            make prof | tee runtime ;
          fi

        # Update status with profile results, compare with master if possible
        - |
          if [ "$TRAVIS_TEST_RESULT" -eq 0 ]
          then
            CURR=$(grep -o '[0-9]\+ cycles' runtime | \
                awk '{sum += $1} END {print sum}')
            PREV=$(curl -u "$GEKY_BOT_STATUSES" https://api.github.com/repos/$TRAVIS_REPO_SLUG/status/master \
                | jq -re "select(.sha != \"$TRAVIS_COMMIT\")
                    | .statuses[] | select(.context == \"$STAGE/$NAME\").description
                    | capture(\"runtime is (?<runtime>[0-9]+)\").runtime" \
                || echo 0)

            STATUS="Passed, runtime is ${CURR} cycles"
            if [ "$PREV" -ne 0 ]
            then
                STATUS="$STATUS ($(python -c "print '%+.2f' % (100*($CURR-$PREV)/$PREV.0)")%)"
            fi
          fi

    # Deploy stage for updating versions and tags
    - stage: deploy
      env:
        - STAGE=deploy
        - NAME=deploy
      script:
        - |
          bash << 'SCRIPT'
          set -ev
          # Find version defined in equeue.h
          EQUEUE_VERSION=$(grep -ox '#define EQUEUE_VERSION .*' equeue.h \
              | cut -d ' ' -f3)
          EQUEUE_VERSION_MAJOR=$((0xffff & ($EQUEUE_VERSION >> 16)))
          EQUEUE_VERSION_MINOR=$((0xffff & ($EQUEUE_VERSION >>  0)))
          # Grab latest patch from repo tags, default to 0, needs finagling
          # to get past GitHub's pagination API
          PREV_URL=https://api.github.com/repos/$TRAVIS_REPO_SLUG/git/refs/tags/v$EQUEUE_VERSION_MAJOR.$EQUEUE_VERSION_MINOR.
          PREV_URL=$(curl -u "$GEKY_BOT_RELEASES" "$PREV_URL" -I \
              | sed -n '/^Link/{s/.*<\(.*\)>; rel="last"/\1/;p;q0};$q1' \
              || echo $PREV_URL)
          EQUEUE_VERSION_PATCH=$(curl -u "$GEKY_BOT_RELEASES" "$PREV_URL" \
              | jq 'map(.ref | match("\\bv.*\\..*\\.(.*)$";"g")
                  .captures[].string | tonumber) | max + 1' \
              || echo 0)
          # We have our new version
          EQUEUE_VERSION="v$EQUEUE_VERSION_MAJOR.$EQUEUE_VERSION_MINOR.$EQUEUE_VERSION_PATCH"
          echo "VERSION $EQUEUE_VERSION"
          # Check that we're the most recent commit
          CURRENT_COMMIT=$(curl -f -u "$GEKY_BOT_RELEASES" \
              https://api.github.com/repos/$TRAVIS_REPO_SLUG/commits/master \
              | jq -re '.sha')
          [ "$TRAVIS_COMMIT" == "$CURRENT_COMMIT" ] || exit 0
          # Create major branch (vN)
          git branch v$EQUEUE_VERSION_MAJOR HEAD
          git push https://$GEKY_BOT_RELEASES@github.com/$TRAVIS_REPO_SLUG.git \
              v$EQUEUE_VERSION_MAJOR
          # Create patch version tag (vN.N.N)
          curl -f -u "$GEKY_BOT_RELEASES" -X POST \
              https://api.github.com/repos/$TRAVIS_REPO_SLUG/git/refs \
              -d "{
                  \"ref\": \"refs/tags/$EQUEUE_VERSION\",
                  \"sha\": \"$TRAVIS_COMMIT\"
              }"
          # Build release notes
          PREV=$(git tag --sort=-v:refname -l "v*" | head -1)
          if [ ! -z "$PREV" ]
          then
              echo "PREV $PREV"
              CHANGES=$(git log --oneline $PREV.. --grep='^Merge' --invert-grep)
              printf "CHANGES\n%s\n\n" "$CHANGES"
          fi
          # Create the release
          curl -f -u "$GEKY_BOT_RELEASES" -X POST \
              https://api.github.com/repos/$TRAVIS_REPO_SLUG/releases \
              -d "{
                  \"tag_name\": \"$EQUEUE_VERSION\",
                  \"name\": \"${EQUEUE_VERSION%.0}\",
                  \"draft\": $(jq -R 'endswith(".0")' <<< "$EQUEUE_VERSION"),
                  \"body\": $(jq -sR '.' <<< "$CHANGES")
              }" #"
          SCRIPT

# Manage statuses
before_install:
  - |
    curl -u "$GEKY_BOT_STATUSES" -X POST \
        https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
        -d "{
            \"context\": \"$STAGE/$NAME\",
            \"state\": \"pending\",
            \"description\": \"${STATUS:-In progress}\",
            \"target_url\": \"https://travis-ci.org/$TRAVIS_REPO_SLUG/jobs/$TRAVIS_JOB_ID\"
        }"

after_failure:
  - |
    curl -u "$GEKY_BOT_STATUSES" -X POST \
        https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
        -d "{
            \"context\": \"$STAGE/$NAME\",
            \"state\": \"failure\",
            \"description\": \"${STATUS:-Failed}\",
            \"target_url\": \"https://travis-ci.org/$TRAVIS_REPO_SLUG/jobs/$TRAVIS_JOB_ID\"
        }"

after_success:
  - |
    curl -u "$GEKY_BOT_STATUSES" -X POST \
        https://api.github.com/repos/$TRAVIS_REPO_SLUG/statuses/${TRAVIS_PULL_REQUEST_SHA:-$TRAVIS_COMMIT} \
        -d "{
            \"context\": \"$STAGE/$NAME\",
            \"state\": \"success\",
            \"description\": \"${STATUS:-Passed}\",
            \"target_url\": \"https://travis-ci.org/$TRAVIS_REPO_SLUG/jobs/$TRAVIS_JOB_ID\"
        }"

# Job control
stages:
  - name: test
  - name: deploy
    if: branch = master AND type = push