do-batch

#!/bin/bash -e
#
# A tactical tool to submit batch charm changes.  This is an example which
# represents a point-in-time need, and it can be re-used and adjusted for
# similar future tactical needs.
#
# REQUIRED:  Update the following gerrit topic and commit message contents
# to fit the specific goal of your batch.
basedir="$(pwd)"

usage="usage: batch-example <master||stable/nn.nn> <commit-message> <topic> [arguments]

Arguments:
  --sync-helpers      Sync charm helpers and ceph helpers
  --update-tox        Update tox files from globals
  --update-reqs       Update requirements files from globals
  --amend             Amend the local commit
  --force-review      Force a review even if no changes are detected.
  --do-clone          Do the git clone
  --do-commit         Do the commit.
  --do-review         Do the gerrit review.
  --rebase-master     NOT IMPLEMENTED

Usage examples:

  Clone all charms, do a charm-helpers sync and a ceph sync where applicable,
  update the tox.ini files and *requirements.txt files throughout, and propose
  the change as a gerrit review.
    ./batch-example master some_file.txt topic-name --sync-helpers --update-tox --update-reqs --do-clone --do-commit --do-review

  Useful for iterating over the whole set of charms as a developer:
  Note no clone, no commit, no review
    ./batch-example master --update-tox --update-reqs

  Pile another patchset onto an existing local batch:
  Note, no clone
    ./batch-example master some_file.txt topic-name --do-commit --do-review --amend --sync-helpers --update-tox --update-reqs"

charms=$(cd charms && ls -d1 *)
branch="$1"
commit_msg_file="$2"
gerrit_topic="$3"
all_params="$@"

echo "branch: $branch"
echo "commit msg file: $commit_msg_file"
echo "gerrit_topic: $gerrit_topic"

if [ -z "$branch" ]; then
    echo -e "$usage"
    echo "No branch name supplied"
    exit 1
fi

if [ -z "$commit_msg_file" ]; then
    echo -e "$usage"
    echo "No commit_msg_file name supplied"
    exit 1
fi

if [ -z "$gerrit_topic" ]; then
    echo -e "$usage"
    echo "No gerrit_topic supplied"
    exit 1
fi

# Expect user to have git config ready for gerrit use
git config --get gitreview.username || ( echo " ! Not set: gitreview.username git config option"; echo -e "$usage"; exit 1 )

commit_msg="$(cat $commit_msg_file ||:)"
if [ -z "$commit_msg" ]; then
    echo " ! $commit_msg_file not found or empty." && exit 1
fi


function git_get(){
  (
  if [[ "$all_params" == *--amend* ]] && [[ ! -d $2 ]]; then
    echo " + Clone $1 -> $2"
    git clone $1 $2
    cd $2
    git checkout $3
  elif [[ "$all_params" != *--amend* ]] && [[ -d $2 ]]; then
    echo " ! Dir exists: $2.  Consider running 'make clean' or using --amend."
    exit 1
  else
    echo " . Re-using checkout dir $2"
    cd $2
    git branch -v
  fi
  )
}


function git_review(){
  if [[ "$all_params" != *--do-review* ]]; then
    echo " . Skipping gerrit review for $charm."
  elif [[ "$all_params" != *--force-review* ]]; then
    echo " . Submitting gerrit review for $charm."
    git review
  elif [[ "$all_params" == *--force-review* ]]; then
    echo " . Submitting gerrit review for $charm (non-fatal on failure)."
    git review ||:
  else
    echo " ! Unknown condition in git_review"
    exit 1
  fi
}


# Get charms
if [[ "$all_params" == *--do-clone* ]]; then
  ./get-charms $branch
fi

# Do stuff
if [[ "$all_params" == *--update-tox* ]]; then
  pwd
  ./_update-tox-files
fi
if [[ "$all_params" == *--update-reqs* ]]; then
  ./_update-requirements
fi
if [[ "$all_params" == *--sync-helpers* ]]; then
  ./do-batch-with _do-single-charm-sync
fi

# fix up the commit message
if [[ ! "$commit_msg_file" =~ ^// ]]; then
    commit_msg_file="$basedir/$commit_msg_file"
    echo "absolute for commit_msg_file is: $commit_msg_file"
fi


# Commit
for charm in $charms; do
  echo "===== $charm ====="
  (
    cd "charms/$charm"
    git_status="$(git status -s)"
    if [[ "$all_params" == *--force-review* ]]; then
      git_status="The Force is strong."
    fi

    if [[ "$all_params" != *--amend* ]] && [[ "$all_params" == *--do-commit* ]] && [[ -n "$git_status" ]]; then
      git checkout -b $gerrit_topic
      git add .
      git commit -F $commit_msg_file
    elif [[ "$all_params" == *--amend* ]] && [[ "$all_params" == *--do-commit* ]] && [[ -n "$git_status" ]]; then
      git checkout $gerrit_topic || git checkout -b $gerrit_topic
      git add .
      git commit --amend -F $commit_msg_file
    elif [[ "$all_params" == *--do-review* ]]; then
      git_review || true
    else
      echo " - No changes for $charm, skipping commit and git review."
    fi
  )
done


# TODO: NOT IMPLEMENTED

# Optionally rebase with master
# if [[ "${REBASE_MASTER^^}" == "TRUE" ]]; then
#   (
#     git checkout master
#     git pull
#     git checkout $gerrit_topic || git checkout -b $gerrit_topic
#     git rebase master
#   )
# fi