extract-dependencies

#!/bin/bash
#
# Copyright (C) 2021 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

set -e
set -x

BASEDIR=$(cd $(dirname $0); pwd)

export GIT_COMMITTER_NAME="Extractor"
export GIT_COMMITTER_EMAIL="noaddress@nowhere.com"

TARGET="$1"
test -n "$TARGET" -a -d "$TARGET" && cd "$TARGET"

# git log -1 | while read line; do
while read line; do
  if ! egrep -iq '^\s*(build-depends|depends-on):' <<< $line; then
      continue
  fi
  echo "Processing line '$line'"
  # try to find a github pr first
  if egrep -iq 'https://github.com/.*/pull' <<< $line; then
      pr=$(sed -e 's@.*/pull/'@@ <<< $line)
      proj=$(sed -e 's@\(build-Depends\|depends-on\):\s*https://github.com/\(.*\)/pull/.*@\2@i' <<< $line)
      dir=$(basename $proj)

      if [ -n "$pr" -a -n "$proj" ]; then
          echo "Extracting PR $pr from $proj"

          curl -s -H "Accept: application/vnd.github.v3+json" -H "Authorization: token $(cat ~/.github_token)" https://api.github.com/repos/$proj/pulls/$pr > $dir-$pr.json

          if [ ! -d $dir ]; then
              if [ -r $HOME/.ssh/id_github ]; then
                  ssh-agent bash -c "ssh-add $HOME/.ssh/id_github; git clone git@github.com:$proj $dir"
              else
                  git clone git@github.com:$proj $dir
              fi
          fi

          cd $dir
          git stash || :
          git checkout master || git checkout main
          # remove old branch if it exists
          git branch -D pr$pr || :
          if [ -r $HOME/.ssh/id_github ]; then
              ssh-agent bash -c "ssh-add $HOME/.ssh/id_github; git fetch origin pull/$pr/head:pr$pr"
          else
              git fetch origin pull/$pr/head:pr$pr
          fi
          # check if branch is already merged
          if git branch -d pr$pr; then
              git checkout master || git checkout main
          else
              git checkout pr$pr
              if [ -r $HOME/.ssh/id_github ]; then
                  ssh-agent bash -c "ssh-add $HOME/.ssh/id_github; git fetch origin master" || ssh-agent bash -c "ssh-add $HOME/.ssh/id_github; git fetch origin main"
              else
                  git fetch origin master || git fetch origin main
              fi
              if ! git rebase origin/master && ! git rebase origin/main; then
                  $BASEDIR/send-feedback $TARGET "error in check dallas: unable to rebase PR $pr from $proj"
                  rm -rf $TARGET
                  exit 1
              fi
          fi
      fi
  else
      # try to find a gerrit review
      changeid=$(sed -e 's@\s*\(build-depends\|depends-on\):\s*\(.*\)\s*@\2@i' <<< $line)
      if [ -n "$changeid" ]; then
          curl -s https://softwarefactory-project.io/r/changes/${changeid}?o=CURRENT_REVISION | tail -n +2 > ${changeid}.json
          PROJECT=$(jq -r .project ${changeid}.json)
          CURREV=$(jq -r .current_revision ${changeid}.json)
          PATCHSET=$(jq -r ".revisions[\"$CURREV\"]._number" ${changeid}.json)
          REPOURL=$(jq -r ".revisions[\"$CURREV\"].fetch[\"anonymous http\"].url" ${changeid}.json)
          REVID=$(jq -r ".revisions[\"$CURREV\"].fetch[\"anonymous http\"].ref" ${changeid}.json)

          if [ ! -d $PROJECT ]; then
              git clone $REPOURL $PROJECT
          fi

          cd $PROJECT
          git stash || :
          git checkout master
          # remove old branch if it exists
          git branch -D gr$changeid || :
          git fetch $REPOURL $REVID:gr$changeid
          # check if branch is already merged
          if git branch -d gr$changeid; then
              git checkout master
          else
              git checkout gr$changeid
              git fetch origin master
              if ! git rebase origin/master; then
                  $BASEDIR/send-feedback $TARGET "error in dci-check-command: unable to rebase Gerrit review $changeid from $PROJECT"
                  rm -rf $TARGET
                  exit 1
              fi
          fi
      fi
  fi
  cd $TARGET
done