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path: root/debian/_buildscripts/local/update_repositories.sh
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#!/bin/bash

# Check command line arguments and set options
# Run before loading configuration, to allow branch overriding
flag_INCREMENTAL="n"
flag_VERBOSE_LOG="n"
flag_SWITCH_ONLY="n"
flag_SKIP_TAGS="n"
OVERRIDE_DEFAULT_REPO_BRANCH=""
for ((idx=1; idx<=$#; idx++)); do
  arg="${!idx}"
  if [ "$arg" = "-i" ]; then             # continue from last updated module (Incremental)
    flag_INCREMENTAL="y"
  elif [ "$arg" = "-v" ]; then           # display and log git command output (Verbose)
    flag_VERBOSE_LOG="y"
  elif [ "$arg" = "-ub" ]; then          # branches to update (Update Branches)
    ((idx++))
    OVERRIDE_UPDATE_BRANCHES="${!idx}"
    [[ -z "$OVERRIDE_DEFAULT_REPO_BRANCH" ]] && OVERRIDE_DEFAULT_REPO_BRANCH="${!idx}"
  elif [ "$arg" = "-db" ]; then         # default branch after update (Default Branch)
    ((idx++))
    if [[ "$flag_SWITCH_ONLY" != 'y' ]]; then
      # '-db' is only used if no '-so' argument is specified. If '-so <branch>'
      # is given, '-db <branch> is ignored
      OVERRIDE_DEFAULT_REPO_BRANCH="${!idx}"
    fi
  elif [ "$arg" = "-so" ]; then          # switch branch only (Switch Only)
    flag_SWITCH_ONLY="y" && ((idx++))
    if ! [[ "${!idx}" =~ ^- ]]; then
      OVERRIDE_DEFAULT_REPO_BRANCH="${!idx}"
    else
      ((idx--))
    fi
  fi
done

# Load common code
. ./internals/_build_common.sh
init_common

UPDATE_LOCK_FILENAME="/var/lock/TDE_update_repo_lock"    # Lock file for incremental update

declare -A RESULT_STRINGS=(
[OK]="[   OK   ]"
[FAIL]="[  FAIL  ]"
[UPDATE]="[ UPDATE ]"
[SKIP]="[  SKIP  ]"
[INV-OP]="[ INV-OP ]"
)
declare -A COLOR_STRINGS=(
[OK]="${CNone}"
[FAIL]="${CLightRed}"
[UPDATE]="${CLightGreen}"
[SKIP]="${CBrown}"
[INV-OP]="${CLightPurple}"
)

#----------------------------
# Update a given module from the upstream repo
# Parameters:
#  $1 - module folder
#  $2 - operation type
#  $3 - branch to update
function _do_update()
{
  local MOD_PATH=$1
  local OP_TYPE=$2
  local BRANCH=$3
  local RESULT=""
  local LINE_CTRL_SUFFIX=""

  case "$OP_TYPE" in
    "fetch")
      if [[ -z `grep "^$BRANCH - $MOD_PATH$" "$UPDATE_LOCK_FILENAME"` ]]; then
        cd "$MOD_PATH" &>/dev/null
        eval git fetch --all --prune $GIT_NO_RECURSE_SUBMODULES $OPT_VERBOSE_LOG
        if [ $? -eq 0 ]; then
          RESULT="OK"
        else
          RESULT="FAIL"
        fi
        echo "$BRANCH - $MOD_PATH" >> "$UPDATE_LOCK_FILENAME"
      else
        RESULT="SKIP"
      fi
      ;;


    "update")
      cd "$MOD_PATH" &>/dev/null
      if [ $? -eq 0 ]; then
        # Clean up any possible uncommitted changes
        if [[ ! -z "`git status --porcelain $GIT_IGNORE_SUBMODULES`" ]]; then
          git reset --hard HEAD &>/dev/null
          git clean -dxff &>/dev/null
        fi
        # Make sure the local branch exists
        if [[ -z `git branch | grep -E "\b$BRANCH\b"` ]]; then
          eval git checkout -b \"$BRANCH\" \"origin/$BRANCH\" $OPT_VERBOSE_LOG
        else
          eval git checkout \"$BRANCH\" $OPT_VERBOSE_LOG
        fi
        # Make sure the local branch is a tracking branch
        if [[ -z `git config branch."$BRANCH".remote` ]]; then
          git branch -u "origin/$BRANCH" &>/dev/null #$
          git reset --hard "origin/$BRANCH" &>/dev/null
        fi
        # Update
        eval git reset --hard HEAD $OPT_VERBOSE_LOG
        eval git clean -dxff $OPT_VERBOSE_LOG
        if [[ $(git rev-parse HEAD) != $(git rev-parse "origin/$BRANCH") ]]; then
          eval git rebase $OPT_VERBOSE_LOG
          if [[ `git rev-parse HEAD` == `git rev-parse "origin/$BRANCH"` ]]; then
            RESULT="UPDATE"
          else
            RESULT="FAIL"
          fi
        else
          RESULT="OK"
        fi
      else
        RESULT="FAIL"
      fi
      ;;

    "switch-to")
      cd "$MOD_PATH" &>/dev/null
      eval git checkout \"$BRANCH\" $OPT_VERBOSE_LOG
      eval git reset --hard HEAD $OPT_VERBOSE_LOG
      eval git clean -dxff $OPT_VERBOSE_LOG
      if [[ ! -z `git branch -v | grep -E "^\*\s+$BRANCH"` ]]; then
        RESULT="OK"
      else
        RESULT="FAIL"
      fi
      ;;

    *)
      RESULT="INV-OP"
      ;;
  esac

  if [ "$RESULT" != "OK" -o "$flag_VERBOSE_LOG" = "y" ]; then
    LINE_CTRL_SUFFIX="\n"
  fi
  echo -ne "\033[2K\r${COLOR_STRINGS[$RESULT]}${RESULT_STRINGS[$RESULT]}  $MOD_PATH${CNone}$LINE_CTRL_SUFFIX"
  echo "${RESULT_STRINGS[$RESULT]}  $MOD_PATH" >> "$LOG_UPDATE_REPO_FILENAME"
}

#----------------------------
# Update a given module and all submodules from the upstream repo
# Parameters:
#  $1 - module folder
#  $2 - operation type
#  $3 - branch to update
function _update_module()
{
  local MOD_PATH=$1
  local OP_TYPE=$2
  local BRANCH=$3

  # Current module
  _do_update "$@"
  # Submodules
  local SUBMOD_LIST="$MOD_PATH/.gitmodules"
  if [[ -e "$SUBMOD_LIST" ]]; then
    sed -n "s|^\[submodule \"\([^\"]*\)\"\]$|\1|p" <$SUBMOD_LIST |\
    while read -r SUBMOD_PATH; do
      cd "$MOD_PATH" &>/dev/null
      if [[ -z "`git config --get submodule.$SUBMOD_PATH.url`" ]]; then
        eval git submodule init -- \"$SUBMOD_PATH\" $OPT_VERBOSE_LOG
      fi
      if [[ ! -e "$MOD_PATH/$SUBMOD_PATH/.git" ]]; then
        eval git submodule update -- \"$SUBMOD_PATH\" $OPT_VERBOSE_LOG
      fi
      _update_module "$MOD_PATH/$SUBMOD_PATH" "$OP_TYPE" "$BRANCH"
    done
  fi
}

#----------------------------
if [ "$flag_INCREMENTAL" = "y" ]; then
  [ ! -f "$UPDATE_LOCK_FILENAME" ] && flag_INCREMENTAL="n"
else
  [ -f "$UPDATE_LOCK_FILENAME" ] && rm "$UPDATE_LOCK_FILENAME"
fi

OPT_VERBOSE_LOG="&>/dev/null"
if [[ "$flag_VERBOSE_LOG" = "y" ]]; then
  OPT_VERBOSE_LOG=" |& tee -a \"$LOG_UPDATE_REPO_FILENAME\""
fi

#----------------------------
# Check git abilities
GIT_IGNORE_SUBMODULES=""
if [[ -n "`git status --help 2>/dev/null|grep -- '--ignore-submodules'`" ]]; then
  GIT_IGNORE_SUBMODULES="--ignore-submodules"
fi
GIT_NO_RECURSE_SUBMODULES=""
if [[ -n "`git pull --help |grep -- '--\[no-\]recurse-submodules'`" ]]; then
  GIT_NO_RECURSE_SUBMODULES="--no-recurse-submodules"
fi

# Start update
if [ "$flag_INCREMENTAL" != "y" ]; then
  echo "TDE repositories update started" > "$UPDATE_LOCK_FILENAME"
fi

_LAST_BRANCH=""
if [[ "$flag_SWITCH_ONLY" != "y" ]]; then
  # Update extra dependency repository
  if [[ "$USE_PREBUILD_EXTRA_DEPS" != "y" ]]; then
    echo_and_tee "${CLightCyan}---------------------------------------${CNone}" "$LOG_UPDATE_REPO_FILENAME" "y"
    echo_and_tee "${CLightCyan}      Fetching extra dependencies      ${CNone}" "$LOG_UPDATE_REPO_FILENAME"
    echo_and_tee "${CLightCyan}---------------------------------------${CNone}" "$LOG_UPDATE_REPO_FILENAME"

    # Fetch TDE extra dependency repository
    _update_module "$REPO_EXTRA_DEPENDENCIES" "fetch"
    _update_module "$REPO_EXTRA_DEPENDENCIES" "update" "master"

    echo -e "\033[2K"
    echo "" >> "$LOG_UPDATE_REPO_FILENAME"
  fi

  # Fetch all remotes first
  echo_and_tee "${CLightCyan}---------------------------------------${CNone}" "$LOG_UPDATE_REPO_FILENAME" "y"
  echo_and_tee "${CLightCyan}            Fetching remotes           ${CNone}" "$LOG_UPDATE_REPO_FILENAME"
  echo_and_tee "${CLightCyan}---------------------------------------${CNone}" "$LOG_UPDATE_REPO_FILENAME"

  # Fetch TDE main repository
  _update_module "$REPO_TDE" "fetch"

  echo -e "\033[2K"
  echo "" >> "$LOG_UPDATE_REPO_FILENAME"

  # Branch update
  for branch in "${BRANCHES[@]}"; do
    _LAST_BRANCH="$branch"
    echo_and_tee "${CLightCyan}---------------------------------------${CNone}" "$LOG_UPDATE_REPO_FILENAME"
    echo_and_tee "${CLightCyan}        Updating branch ${CYellow}$branch        ${CNone}" "$LOG_UPDATE_REPO_FILENAME"
    echo_and_tee "${CLightCyan}---------------------------------------${CNone}" "$LOG_UPDATE_REPO_FILENAME"

    # Update TDE main repository
    _update_module "$REPO_TDE" "update" "$branch"

    echo -e "\033[2K"
    echo "" >> "$LOG_UPDATE_REPO_FILENAME"
  done
fi

# Switch to specified branch if necessary
if [[ "$DEFAULT_REPO_BRANCH" != "$_LAST_BRANCH" ]]; then
  echo_and_tee "${CLightCyan}---------------------------------------${CNone}" "$LOG_UPDATE_REPO_FILENAME" "$flag_SWITCH_ONLY"
  echo_and_tee "${CLightCyan}      Switching to branch ${CYellow}$DEFAULT_REPO_BRANCH      ${CNone}" "$LOG_UPDATE_REPO_FILENAME"
  echo_and_tee "${CLightCyan}---------------------------------------${CNone}" "$LOG_UPDATE_REPO_FILENAME"

  # Switch TDE main repository
  _update_module "$REPO_TDE" "switch-to" "$DEFAULT_REPO_BRANCH"

  echo -e "\033[2K"
  echo "" >> "$LOG_UPDATE_REPO_FILENAME"
fi

# Update completed
[ -f "$UPDATE_LOCK_FILENAME" ] && rm "$UPDATE_LOCK_FILENAME"
cd $SCRIPT_DIR