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569 lines
14 KiB
569 lines
14 KiB
#!/bin/bash
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## Bash wrap script to launch the ``compose`` docker with right options.
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##
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##
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## Launcher
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## - should need minimum requirement to run
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## - no shell libs
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##
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[[ "${BASH_SOURCE[0]}" != "${0}" ]] && SOURCED=true
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ANSI_ESC=$'\e['
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ansi_color() {
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local choice="$1"
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if [ "$choice" == "tty" ]; then
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if [ -t 1 ]; then
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choice="yes"
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else
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choice="no"
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fi
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fi
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if [ "$choice" != "no" ]; then
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SET_COL_CHAR="${ANSI_ESC}${COL_CHAR}G"
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SET_COL_STATUS="${ANSI_ESC}${COL_STATUS}G"
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SET_COL_INFO="${ANSI_ESC}${COL_INFO}G"
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SET_COL_ELT="${ANSI_ESC}${COL_ELT}G"
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SET_BEGINCOL="${ANSI_ESC}0G"
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UP="${ANSI_ESC}1A"
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DOWN="${ANSI_ESC}1B"
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LEFT="${ANSI_ESC}1D"
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RIGHT="${ANSI_ESC}1C"
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SAVE="${ANSI_ESC}7"
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RESTORE="${ANSI_ESC}8"
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NORMAL="${ANSI_ESC}0m"
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GRAY="${ANSI_ESC}1;30m"
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RED="${ANSI_ESC}1;31m"
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GREEN="${ANSI_ESC}1;32m"
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YELLOW="${ANSI_ESC}1;33m"
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BLUE="${ANSI_ESC}1;34m"
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PINK="${ANSI_ESC}1;35m"
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CYAN="${ANSI_ESC}1;36m"
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WHITE="${ANSI_ESC}1;37m"
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DARKGRAY="${ANSI_ESC}0;30m"
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DARKRED="${ANSI_ESC}0;31m"
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DARKGREEN="${ANSI_ESC}0;32m"
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DARKYELLOW="${ANSI_ESC}0;33m"
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DARKBLUE="${ANSI_ESC}0;34m"
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DARKPINK="${ANSI_ESC}0;35m"
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DARKCYAN="${ANSI_ESC}0;36m"
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DARKWHITE="${ANSI_ESC}0;37m"
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SUCCESS=$GREEN
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WARNING=$YELLOW
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FAILURE=$RED
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NOOP=$BLUE
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ON=$SUCCESS
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OFF=$FAILURE
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ERROR=$FAILURE
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else
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SET_COL_CHAR=
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SET_COL_STATUS=
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SET_COL_INFO=
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SET_COL_ELT=
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SET_BEGINCOL=
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NORMAL=
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RED=
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GREEN=
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YELLOW=
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BLUE=
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GRAY=
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WHITE=
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DARKGRAY=
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DARKRED=
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DARKGREEN=
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DARKYELLOW=
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DARKBLUE=
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DARKPINK=
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DARKCYAN=
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SUCCESS=
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WARNING=
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FAILURE=
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NOOP=
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ON=
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OFF=
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ERROR=
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fi
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ansi_color="$choice"
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export SET_COL_CHAR SET_COL_STATUS SET_COL_INFO SET_COL_ELT \
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SET_BEGINCOL UP DOWN LEFT RIGHT SAVE RESTORE NORMAL \
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GRAY RED GREEN YELLOW BLUE PINK CYAN WHITE DARKGRAY \
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DARKRED DARKGREEN DARKYELLOW DARKBLUE DARKPINK DARKCYAN \
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SUCCESS WARNING FAILURE NOOP ON OFF ERROR ansi_color
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}
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e() { printf "%s" "$*"; }
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warn() { e "${YELLOW}Warning:$NORMAL" "$*"$'\n' >&2 ; }
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info() { e "${BLUE}II$NORMAL" "$*"$'\n' >&2 ; }
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verb() { [ -z "$VERBOSE" ] || e "$*"$'\n' >&2; }
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debug() { [ -z "$DEBUG" ] || e "$*"$'\n' >&2; }
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err() { e "${RED}Error:$NORMAL $*"$'\n' >&2 ; }
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die() { err "$@" ; exit 1; }
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ansi_color "${ansi_color:-tty}"
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get_path() { (
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IFS=:
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for d in $PATH; do
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filename="$d/$1"
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[ -f "$filename" -a -x "$filename" ] && {
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echo "$d/$1"
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return 0
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}
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done
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return 1
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) }
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depends() {
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## Avoid colliding with variables that are created with depends.
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local __i __path __new_name
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for __i in "$@"; do
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if ! __path=$(get_path "$__i"); then
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__new_name="$(echo "${__i//-/_}")"
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if [ "$__new_name" != "$__i" ]; then
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depends "$__new_name"
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else
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err "dependency check: couldn't find '$__i' required command." >&2
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exit 1
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fi
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else
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if ! test -z "$__path" ; then
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export "$(echo "${__i//- /__}")"="$__path"
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fi
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fi
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done
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}
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get_os() {
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local uname_output
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uname_output="$(uname -s)"
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case "${uname_output}" in
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Linux*) e linux;;
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Darwin*) e mac;;
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CYGWIN*) e cygwin;;
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MINGW*) e mingw;;
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*) e "UNKNOWN:${uname_output}";;
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esac
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}
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read-0() {
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local eof= IFS=''
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while [ "$1" ]; do
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read -r -d '' -- "$1" || eof=1
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shift
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done
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[ -z "$eof" ]
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}
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read-0a() {
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local eof= IFS=''
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while [ "$1" ]; do
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IFS='' read -r -d $'\n' -- "$1" || eof=1
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shift
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done
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[ -z "$eof" ]
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}
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p0() {
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printf "%s\0" "$@"
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}
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list_compose_vars() {
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while read-0a def; do
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def="${def##* }"
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def="${def%=*}"
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p0 "$def"
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done < <(declare -p | grep "^declare -x COMPOSE_[A-Z_]\+=\"")
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}
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get_running_compose_containers() {
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## XXXvlab: docker bug: there will be a final newline anyway
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docker ps --filter label="compose.service" --format='{{.ID}}'
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}
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get_volumes_for_container() {
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local container="$1"
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docker inspect \
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--format '{{range $mount := .Mounts}}{{$mount.Source}}{{"\x00"}}{{$mount.Destination}}{{"\x00"}}{{end}}' \
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"$container"
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}
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is_volume_used() {
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local volume="$1"
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while read container_id; do
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while read-0 src dst; do
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[ "$src" == "$volume" ] && return 0
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done < <(get_volumes_for_container "$container_id")
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done < <(get_running_compose_containers)
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return 1
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}
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clean_unused_sessions() {
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for f in "$COMPOSE_VAR/sessions/"*; do
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[ -e "$f" ] || continue
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is_volume_used "$f" && continue
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rm -f "$f"
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done
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}
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relink_subdirs() {
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local dir
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for dir in "$@"; do
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[ -L "$dir" ] || continue
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target=$(realpath "$dir")
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[ -d "$target" ] || continue
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docker_run_opts+=("-v" "$target:$dir")
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[ -e "$dir/metadata.yml" ] && continue
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relink_subdirs "$dir"/*
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done
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}
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mk_docker_run_options() {
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## Order matters, files get to override vars
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compose_config_files=(
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## DEFAULT LINUX VARS
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/etc/default/charm
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/etc/default/datastore
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/etc/default/compose
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## COMPOSE SYSTEM-WIDE FILES
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/etc/compose.conf
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/etc/compose.local.conf
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/etc/compose/local.conf
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## COMPOSE USER FILES
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~/.compose/etc/local.conf
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~/.compose.conf
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)
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docker_run_opts=("-v" "/var/run/docker.sock:/var/run/docker.sock")
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## current dir
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if parent=$(while true; do
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[ -e "./compose.yml" ] && {
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echo "$PWD"
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exit 0
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}
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[ "$PWD" == "/" ] && exit 1
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cd ..
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done
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); then
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docker_path=$COMPOSE_VAR/root/$(basename "$parent")
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docker_run_opts+=("-v" "$parent:$docker_path:ro" \
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"-w" "$docker_path")
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fi
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##
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## Load config files
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##
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if [ -z "$DISABLE_SYSTEM_CONFIG_FILE" ]; then
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## XXXvlab: should provide YML config opportunities in possible parent dirs ?
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## userdir ? and global /etc/compose.yml ?
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for cfgfile in "${compose_config_files[@]}"; do
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[ -e "$cfgfile" ] || continue
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docker_run_opts+=("-v" "$cfgfile:$cfgfile:ro")
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. "$cfgfile"
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done
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else
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docker_run_opts+=("-e" "DISABLE_SYSTEM_CONFIG_FILE=$DISABLE_SYSTEM_CONFIG_FILE")
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fi
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COMPOSE_LOCAL_ROOT=${COMPOSE_LOCAL_ROOT:-"$HOME/.compose"}
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case "$(get_os)" in
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linux)
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if [ "$UID" == 0 ]; then
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COMPOSE_VAR=${COMPOSE_VAR:-/var/lib/compose}
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COMPOSE_CACHE=${COMPOSE_CACHE:-/var/cache/compose}
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else
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COMPOSE_VAR="$COMPOSE_LOCAL_ROOT"/lib
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COMPOSE_CACHE="$COMPOSE_LOCAL_ROOT"/cache
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fi
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;;
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mac)
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COMPOSE_VAR=${COMPOSE_VAR:-"$COMPOSE_LOCAL_ROOT"/lib}
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COMPOSE_CACHE=${COMPOSE_CACHE:-"$COMPOSE_LOCAL_ROOT"/cache}
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;;
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*)
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echo "System '$os' not supported yet." >&2
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exit 1
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;;
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esac
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## get TZ value and prepare TZ_PATH
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TZ=$(get_tz) || exit 1
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mkdir -p "${COMPOSE_VAR}/timezones"
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TZ_PATH="${COMPOSE_VAR}/timezones/$(e "$TZ" | sha256sum | cut -c 1-8)" || exit 1
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[ -e "$TZ_PATH" ] || e "$TZ" > "$TZ_PATH"
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## CACHE/DATA DIRS
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docker_run_opts+=("-v" "$COMPOSE_VAR:/var/lib/compose")
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docker_run_opts+=("-v" "$COMPOSE_CACHE:/var/cache/compose")
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docker_run_opts+=("-v" "$TZ_PATH:/etc/timezone:ro")
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##
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## Checking vars
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##
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## CHARM_STORE
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if [ "$UID" == 0 ]; then
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CHARM_STORE=${CHARM_STORE:-/srv/charm-store}
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else
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CHARM_STORE=${CHARM_STORE:-$HOME/.charm-store}
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fi
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[ -e "$CHARM_STORE" ] || mkdir -p "$CHARM_STORE" || exit 1
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[ -L "$CHARM_STORE" ] && {
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CHARM_STORE=$(readlink -f "$CHARM_STORE") || exit 1
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}
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docker_run_opts+=(
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"-v" "$CHARM_STORE:/srv/charm-store:ro"
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"-e" "CHARM_STORE=/srv/charm-store"
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"-e" "HOST_CHARM_STORE=$CHARM_STORE"
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)
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relink_subdirs "$CHARM_STORE"/*
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## DEFAULT_COMPOSE_FILE
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if [ "${DEFAULT_COMPOSE_FILE+x}" ]; then
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DEFAULT_COMPOSE_FILE=$(realpath "$DEFAULT_COMPOSE_FILE")
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dirname=$(dirname "$DEFAULT_COMPOSE_FILE")/
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if [ -e "${DEFAULT_COMPOSE_FILE}" ]; then
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docker_run_opts+=("-v" "$dirname:$dirname:ro")
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fi
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fi
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## COMPOSE_YML_FILE
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if [ "${COMPOSE_YML_FILE+x}" ]; then
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if [ -e "${COMPOSE_YML_FILE}" ]; then
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docker_run_opts+=(
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"-v" "$COMPOSE_YML_FILE:/tmp/compose.yml:ro"
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"-e" "COMPOSE_YML_FILE=/tmp/compose.yml"
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"-e" "HOST_COMPOSE_YML_FILE=/tmp/compose.yml"
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)
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fi
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fi
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## DATASTORE
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if [ "$UID" == 0 ]; then
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DATASTORE=${DATASTORE:-/srv/datastore/data}
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else
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DATASTORE=${DATASTORE:-"$COMPOSE_LOCAL_ROOT"/data}
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fi
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docker_run_opts+=(
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"-v" "$DATASTORE:/srv/datastore/data:rw"
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"-e" "DATASTORE=/srv/datastore/data"
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"-e" "HOST_DATASTORE=$DATASTORE"
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)
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## CONFIGSTORE
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if [ "$UID" == 0 ]; then
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CONFIGSTORE=${CONFIGSTORE:-/srv/datastore/config}
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else
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CONFIGSTORE=${CONFIGSTORE:-"$COMPOSE_LOCAL_ROOT"/data}
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fi
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docker_run_opts+=(
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"-v" "$CONFIGSTORE:/srv/datastore/config:rw"
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"-e" "CONFIGSTORE=/srv/datastore/config"
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"-e" "HOST_CONFIGSTORE=$CONFIGSTORE"
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)
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docker_run_opts+=("-v" "$HOME/.docker:/root/.docker")
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COMPOSE_DOCKER_IMAGE=${COMPOSE_DOCKER_IMAGE:-docker.0k.io/compose}
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docker_run_opts+=("-e" "COMPOSE_DOCKER_IMAGE=$COMPOSE_DOCKER_IMAGE")
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## SSH config
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docker_run_opts+=(
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"-v" "$HOME/.ssh:/root/.ssh:ro"
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"-v" "/etc/ssh:/etc/ssh:ro"
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)
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COMPOSE_LAUNCHER_BIN=$(readlink -f "${BASH_SOURCE[0]}")
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docker_run_opts+=("-v" "$COMPOSE_LAUNCHER_BIN:/usr/local/bin/compose")
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while read-0 var; do
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case "$var" in
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COMPOSE_YML_FILE|COMPOSE_LAUNCHER_BIN|COMPOSE_DOCKER_IMAGE|\
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COMPOSE_LAUNCHER_OPTS|COMPOSE_VAR|COMPOSE_CACHE)
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:
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;;
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*)
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docker_run_opts+=("-e" "$var=${!var}")
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;;
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esac
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done < <(list_compose_vars)
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filename=$(mktemp -p /tmp/ -t launch_opts-XXXXXXXXXXXXXXXX)
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{
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p0 "${docker_run_opts[@]}"
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} > "$filename"
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sha=$(sha256sum "$filename")
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sha=${sha:0:64}
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dest="$COMPOSE_VAR/sessions/$sha"
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{
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p0 "-v" "$dest:$dest"
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p0 "-e" "COMPOSE_LAUNCHER_OPTS=$dest"
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p0 "-e" "COMPOSE_LAUNCHER_BIN=$COMPOSE_LAUNCHER_BIN"
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} >> "$filename"
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mkdir -p "$COMPOSE_VAR"/sessions
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mv "$filename" "$dest"
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echo "$dest"
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if [ "$DEBUG" ]; then
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echo "${WHITE}Environment:${NORMAL}"
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echo " COMPOSE_DOCKER_IMAGE: $COMPOSE_DOCKER_IMAGE"
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echo " CHARM_STORE: $CHARM_STORE"
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echo " DATASTORE: $DATASTORE"
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echo " CONFIGSTORE: $CONFIGSTORE"
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echo " COMPOSE_VAR: $COMPOSE_VAR"
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echo " COMPOSE_CACHE: $COMPOSE_CACHE"
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fi >&2
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}
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get_tz() {
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if [ -n "$TZ" ]; then
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:
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elif [ -n "$COMPOSE_LOCAL_ROOT" ] && ## previous compose run
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[ -e "$COMPOSE_LOCAL_ROOT/etc/timezone" ]; then
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read -r TZ < /etc/timezone
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elif [ -e "/etc/timezone" ]; then ## debian host system timezone
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read -r TZ < /etc/timezone
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elif [ -e "/etc/localtime" ]; then ## redhat and macosx sys timezone
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local fullpath dirname
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fullpath="$(readlink -f /etc/localtime)"
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dirname="${fullpath%/*}"
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TZ=${TZ:-${fullpath##*/}/${dirname##*/}}
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else
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err "Timezone not found nor inferable !"
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echo " compose relies on '/etc/timezone' or '/etc/localtime' to be present " >&2
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echo " so as to ensure same timezone for all containers that need it." >&2
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echo >&2
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echo " You can set a default value for compose by create issuing:" >&2
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echo >&2
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if [ -n "$COMPOSE_LOCAL_ROOT" ] && [ "$UID" != 0 ]; then
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echo " mkdir -p $COMPOSE_LOCAL_ROOT/etc &&" >&2
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echo " echo \"Europe/Paris\" > $COMPOSE_LOCAL_ROOT/etc/timezone" >&2
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else
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echo " echo \"Europe/Paris\" > /etc/timezone" >&2
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fi
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echo >&2
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echo " Of course, you can change 'Europe/Paris' value by any other valid timezone." >&2
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echo " timezone." >&2
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echo >&2
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echo " Notice you can also use \$TZ environment variable, but the value" >&2
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echo " will be necessary each time you launch compose." >&2
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echo >&2
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return 1
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fi
|
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e "$TZ"
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}
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|
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pretty_print() {
|
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while [ "$#" != 0 ]; do
|
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case "$1" in
|
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"-v"|"-e"|"-w")
|
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e "$1" "$2" "\\"$'\n'
|
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shift;;
|
|
*)
|
|
e "$1 ";;
|
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esac
|
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shift
|
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done
|
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}
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|
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run() {
|
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local os docker_run_opts
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|
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docker_run_opts=()
|
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if [ -z "$COMPOSE_LAUNCHER_OPTS" ]; then
|
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clean_unused_sessions
|
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COMPOSE_LAUNCHER_OPTS="$(mk_docker_run_options)"
|
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fi
|
|
|
|
while read-0 opt; do
|
|
docker_run_opts+=("$opt")
|
|
## catch COMPOSE_DOCKER_IMAGE
|
|
if [[ "$env" == "true" && "$opt" == "COMPOSE_DOCKER_IMAGE="* ]]; then
|
|
COMPOSE_DOCKER_IMAGE=${opt##COMPOSE_DOCKER_IMAGE=}
|
|
elif [ "$opt" == "-e" ]; then
|
|
env=true
|
|
else
|
|
env=
|
|
fi
|
|
done < <(cat "$COMPOSE_LAUNCHER_OPTS")
|
|
|
|
[ -t 0 ] && docker_run_opts+=("-i")
|
|
[ -t 1 ] && docker_run_opts+=("-t")
|
|
if [ "$DEBUG" ]; then
|
|
echo "${WHITE}Launching:${NORMAL}"
|
|
echo " docker run --rm \\"
|
|
pretty_print "${docker_run_opts[@]}" | sed -r 's/^/ /g' >&2
|
|
echo "\\"$'\n' >&2
|
|
echo " ${COMPOSE_DOCKER_IMAGE} \\"
|
|
echo " " "$@"
|
|
fi >&2
|
|
exec docker run --rm "${docker_run_opts[@]}" "${COMPOSE_DOCKER_IMAGE}" "$@"
|
|
}
|
|
|
|
|
|
[ "$SOURCED" ] && return 0
|
|
|
|
|
|
##
|
|
## Code
|
|
##
|
|
|
|
|
|
depends readlink
|
|
|
|
run "$@"
|