594 lines
17 KiB
Bash
Executable File
594 lines
17 KiB
Bash
Executable File
#!/usr/bin/env bash
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###### Global help
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DOC="
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The cooperative cloud utility belt 🎩🐇
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Usage: abra [-c|--config=<path>] [-e|--env=<path>] [-h|--help]
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[-s|--stack=<path>] [-v|--version] <command> [<args>...]
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Options:
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-c, --config=<path> Stack configuration to use
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-e, --env=<path> Environment variables to load
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-h, --help Show this message and exit
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-s, --stack=<path> Name of the target stack
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-v, --version Show program version
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These are common Abra commands used in various situations:
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Manage an application lifecycle:
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deploy let 'em rip
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upgrade upgrade to the latest version
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View logs from running applications:
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logs tail logs from a deployed service
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multilogs tail logs from a whole stack
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Interact with running containers:
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cp <src> <dest> copy files to a container
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run <service> <cmd> run <cmd> in <service>'s container
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Manage servers:
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server add <host> [user] [port] add docker context
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server rm <host> remove docker context
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server use <host> activate docker context
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server init <host> activate docker swarm mode
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Manage secrets:
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secret generate <secret> <version> [pwgen] generate & store secret
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secret insert <secret> <version> <password> save password in docker & pass
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See 'abra help <command>' to read about a specific subcommand.
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"
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# docopt parser below, refresh this parser with `docopt.sh abra`
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# shellcheck disable=2016,1075,2154
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docopt() { parse() { if ${DOCOPT_DOC_CHECK:-true}; then local doc_hash
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if doc_hash=$(printf "%s" "$DOC" | (sha256sum 2>/dev/null || shasum -a 256)); then
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if [[ ${doc_hash:0:5} != "$digest" ]]; then
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stderr "The current usage doc (${doc_hash:0:5}) does not match \
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what the parser was generated with (${digest})
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Run \`docopt.sh\` to refresh the parser."; _return 70; fi; fi; fi
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local root_idx=$1; shift; argv=("$@"); parsed_params=(); parsed_values=()
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left=(); testdepth=0; local arg; while [[ ${#argv[@]} -gt 0 ]]; do
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if [[ ${argv[0]} = "--" ]]; then for arg in "${argv[@]}"; do
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parsed_params+=('a'); parsed_values+=("$arg"); done; break
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elif [[ ${argv[0]} = --* ]]; then parse_long
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elif [[ ${argv[0]} = -* && ${argv[0]} != "-" ]]; then parse_shorts
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elif ${DOCOPT_OPTIONS_FIRST:-false}; then for arg in "${argv[@]}"; do
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parsed_params+=('a'); parsed_values+=("$arg"); done; break; else
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parsed_params+=('a'); parsed_values+=("${argv[0]}"); argv=("${argv[@]:1}"); fi
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done; local idx; if ${DOCOPT_ADD_HELP:-true}; then
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for idx in "${parsed_params[@]}"; do [[ $idx = 'a' ]] && continue
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if [[ ${shorts[$idx]} = "-h" || ${longs[$idx]} = "--help" ]]; then
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stdout "$trimmed_doc"; _return 0; fi; done; fi
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if [[ ${DOCOPT_PROGRAM_VERSION:-false} != 'false' ]]; then
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for idx in "${parsed_params[@]}"; do [[ $idx = 'a' ]] && continue
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if [[ ${longs[$idx]} = "--version" ]]; then stdout "$DOCOPT_PROGRAM_VERSION"
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_return 0; fi; done; fi; local i=0; while [[ $i -lt ${#parsed_params[@]} ]]; do
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left+=("$i"); ((i++)) || true; done
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if ! required "$root_idx" || [ ${#left[@]} -gt 0 ]; then error; fi; return 0; }
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parse_shorts() { local token=${argv[0]}; local value; argv=("${argv[@]:1}")
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[[ $token = -* && $token != --* ]] || _return 88; local remaining=${token#-}
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while [[ -n $remaining ]]; do local short="-${remaining:0:1}"
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remaining="${remaining:1}"; local i=0; local similar=(); local match=false
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for o in "${shorts[@]}"; do if [[ $o = "$short" ]]; then similar+=("$short")
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[[ $match = false ]] && match=$i; fi; ((i++)) || true; done
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if [[ ${#similar[@]} -gt 1 ]]; then
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error "${short} is specified ambiguously ${#similar[@]} times"
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elif [[ ${#similar[@]} -lt 1 ]]; then match=${#shorts[@]}; value=true
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shorts+=("$short"); longs+=(''); argcounts+=(0); else value=false
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if [[ ${argcounts[$match]} -ne 0 ]]; then if [[ $remaining = '' ]]; then
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if [[ ${#argv[@]} -eq 0 || ${argv[0]} = '--' ]]; then
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error "${short} requires argument"; fi; value=${argv[0]}; argv=("${argv[@]:1}")
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else value=$remaining; remaining=''; fi; fi; if [[ $value = false ]]; then
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value=true; fi; fi; parsed_params+=("$match"); parsed_values+=("$value"); done
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}; parse_long() { local token=${argv[0]}; local long=${token%%=*}
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local value=${token#*=}; local argcount; argv=("${argv[@]:1}")
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[[ $token = --* ]] || _return 88; if [[ $token = *=* ]]; then eq='='; else eq=''
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value=false; fi; local i=0; local similar=(); local match=false
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for o in "${longs[@]}"; do if [[ $o = "$long" ]]; then similar+=("$long")
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[[ $match = false ]] && match=$i; fi; ((i++)) || true; done
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if [[ $match = false ]]; then i=0; for o in "${longs[@]}"; do
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if [[ $o = $long* ]]; then similar+=("$long"); [[ $match = false ]] && match=$i
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fi; ((i++)) || true; done; fi; if [[ ${#similar[@]} -gt 1 ]]; then
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error "${long} is not a unique prefix: ${similar[*]}?"
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elif [[ ${#similar[@]} -lt 1 ]]; then
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[[ $eq = '=' ]] && argcount=1 || argcount=0; match=${#shorts[@]}
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[[ $argcount -eq 0 ]] && value=true; shorts+=(''); longs+=("$long")
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argcounts+=("$argcount"); else if [[ ${argcounts[$match]} -eq 0 ]]; then
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if [[ $value != false ]]; then
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error "${longs[$match]} must not have an argument"; fi
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elif [[ $value = false ]]; then
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if [[ ${#argv[@]} -eq 0 || ${argv[0]} = '--' ]]; then
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error "${long} requires argument"; fi; value=${argv[0]}; argv=("${argv[@]:1}")
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fi; if [[ $value = false ]]; then value=true; fi; fi; parsed_params+=("$match")
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parsed_values+=("$value"); }; required() { local initial_left=("${left[@]}")
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local node_idx; ((testdepth++)) || true; for node_idx in "$@"; do
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if ! "node_$node_idx"; then left=("${initial_left[@]}"); ((testdepth--)) || true
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return 1; fi; done; if [[ $((--testdepth)) -eq 0 ]]; then
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left=("${initial_left[@]}"); for node_idx in "$@"; do "node_$node_idx"; done; fi
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return 0; }; either() { local initial_left=("${left[@]}"); local best_match_idx
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local match_count; local node_idx; ((testdepth++)) || true
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for node_idx in "$@"; do if "node_$node_idx"; then
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if [[ -z $match_count || ${#left[@]} -lt $match_count ]]; then
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best_match_idx=$node_idx; match_count=${#left[@]}; fi; fi
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left=("${initial_left[@]}"); done; ((testdepth--)) || true
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if [[ -n $best_match_idx ]]; then "node_$best_match_idx"; return 0; fi
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left=("${initial_left[@]}"); return 1; }; optional() { local node_idx
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for node_idx in "$@"; do "node_$node_idx"; done; return 0; }; oneormore() {
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local i=0; local prev=${#left[@]}; while "node_$1"; do ((i++)) || true
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[[ $prev -eq ${#left[@]} ]] && break; prev=${#left[@]}; done
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if [[ $i -ge 1 ]]; then return 0; fi; return 1; }; switch() { local i
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for i in "${!left[@]}"; do local l=${left[$i]}
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if [[ ${parsed_params[$l]} = "$2" ]]; then
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left=("${left[@]:0:$i}" "${left[@]:((i+1))}")
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[[ $testdepth -gt 0 ]] && return 0; if [[ $3 = true ]]; then
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eval "((var_$1++))" || true; else eval "var_$1=true"; fi; return 0; fi; done
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return 1; }; value() { local i; for i in "${!left[@]}"; do local l=${left[$i]}
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if [[ ${parsed_params[$l]} = "$2" ]]; then
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left=("${left[@]:0:$i}" "${left[@]:((i+1))}")
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[[ $testdepth -gt 0 ]] && return 0; local value
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value=$(printf -- "%q" "${parsed_values[$l]}"); if [[ $3 = true ]]; then
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eval "var_$1+=($value)"; else eval "var_$1=$value"; fi; return 0; fi; done
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return 1; }; stdout() { printf -- "cat <<'EOM'\n%s\nEOM\n" "$1"; }; stderr() {
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printf -- "cat <<'EOM' >&2\n%s\nEOM\n" "$1"; }; error() {
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[[ -n $1 ]] && stderr "$1"; stderr "$usage"; _return 1; }; _return() {
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printf -- "exit %d\n" "$1"; exit "$1"; }; set -e; trimmed_doc=${DOC:1:1352}
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usage=${DOC:40:131}; digest=3774c; shorts=(-c -e -h -s -v)
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longs=(--config --env --help --stack --version); argcounts=(1 1 0 1 0)
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node_0(){ value __config 0 true; }; node_1(){ value __env 1 true; }; node_2(){
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switch __help 2; }; node_3(){ value __stack 3 true; }; node_4(){
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switch __version 4; }; node_5(){ value _command_ a; }; node_6(){
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value _args_ a true; }; node_7(){ optional 0 0; }; node_8(){ optional 1 1; }
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node_9(){ either 2 2; }; node_10(){ optional 9; }; node_11(){ optional 3 3; }
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node_12(){ either 4 4; }; node_13(){ optional 12; }; node_14(){ oneormore 6; }
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node_15(){ optional 14; }; node_16(){ required 7 8 10 11 13 5 15; }; node_17(){
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required 16; }; cat <<<' docopt_exit() { [[ -n $1 ]] && printf "%s\n" "$1" >&2
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printf "%s\n" "${DOC:40:131}" >&2; exit 1; }'; unset var___config var___env \
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var___help var___stack var___version var__command_ var__args_; parse 17 "$@"
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local prefix=${DOCOPT_PREFIX:-''}; unset "${prefix}__config" "${prefix}__env" \
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"${prefix}__help" "${prefix}__stack" "${prefix}__version" "${prefix}_command_" \
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"${prefix}_args_"; if declare -p var___config >/dev/null 2>&1; then
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eval "${prefix}"'__config=("${var___config[@]}")'; else
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eval "${prefix}"'__config=()'; fi; if declare -p var___env >/dev/null 2>&1; then
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eval "${prefix}"'__env=("${var___env[@]}")'; else eval "${prefix}"'__env=()'; fi
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eval "${prefix}"'__help=${var___help:-false}'
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if declare -p var___stack >/dev/null 2>&1; then
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eval "${prefix}"'__stack=("${var___stack[@]}")'; else
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eval "${prefix}"'__stack=()'; fi
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eval "${prefix}"'__version=${var___version:-false}'
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eval "${prefix}"'_command_=${var__command_:-}'
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if declare -p var__args_ >/dev/null 2>&1; then
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eval "${prefix}"'_args_=("${var__args_[@]}")'; else eval "${prefix}"'_args_=()'
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fi; local docopt_i=1; [[ $BASH_VERSION =~ ^4.3 ]] && docopt_i=2
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for ((;docopt_i>0;docopt_i--)); do declare -p "${prefix}__config" \
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"${prefix}__env" "${prefix}__help" "${prefix}__stack" "${prefix}__version" \
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"${prefix}_command_" "${prefix}_args_"; done; }
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# docopt parser above, complete command for generating this parser is `docopt.sh abra`
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PROGRAM_NAME=$(basename "$0")
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###### Utility functions
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yml_pattern_exists() {
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PATTERN=$1
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if [ -f "$ABRA_CONFIG" ]; then
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RESULT=$(yq read "$ABRA_CONFIG" "$PATTERN")
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if [ "$RESULT" != 0 ]; then
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return 0
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fi
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fi
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return 1
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}
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parse_subcommand() {
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SUBCOMMAND="$1"
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PREFIX=$2
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if [ -n "$PREFIX" ]; then
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PPREFIX="_$2"
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SPREFIX="$2 "
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fi
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case $SUBCOMMAND in
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"" | "-h" | "--help")
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"sub${PPREFIX}_help"
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;;
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*)
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shift 2
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"sub${PPREFIX}_${SUBCOMMAND}" "$@"
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if [ $? = 127 ]; then
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error "Error: '$SPREFIX$SUBCOMMAND' is not a known subcommand."
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fi
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;;
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esac
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}
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error() {
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echo "$(tput setaf 1)ERROR: $*$(tput sgr0)"
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exit 1
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}
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warning() {
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echo "$(tput setaf 3)WARNING: $*$(tput sgr0)"
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}
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success() {
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echo "$(tput setaf 2)$*$(tput sgr0)"
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}
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###### Top-level arguments
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###### Default settings
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if [ -z "$COMPOSE_FILE" ]; then
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COMPOSE_FILE="compose.yml"
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fi
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if [ -z "$ABRA_STACK_DIR" ]; then
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ABRA_STACK_DIR="stacks/$SERVICE"
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fi
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load_context() {
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if [ -z "$DOCKER_CONTEXT" ]; then
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warning "\$DOCKER_CONTEXT not set, (slowly) looking it up"
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# shellcheck disable=SC2063
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DOCKER_CONTEXT=$(docker context ls | grep '*' | cut -d' ' -f1)
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# FIXME 3wc: make sure grep doesn't parse this, we're want a literal '*'
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fi
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}
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###### Safety checks
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require_yq() {
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if ! type yq > /dev/null 2>&1; then
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error "yq program is not installed"
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fi
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}
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require_multitail() {
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if ! type multitail > /dev/null 2>&1; then
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error "multitail program is not installed"
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fi
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}
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require_stack() {
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if [ -z "$STACK_NAME" ]; then
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error "no stack_name, export \$STACK_NAME=my_cool_app or add it to abra.yml"
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fi
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}
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require_stack_dir() {
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if [ -z "$ABRA_STACK_DIR" ] || [ ! -d "$ABRA_STACK_DIR" ]; then
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error "can't find \$ABRA_STACK_DIR '$ABRA_STACK_DIR'"
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fi
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}
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if [ -z "$ABRA_ENV" ] && [ -f .envrc ] && type direnv > /dev/null 2>&1 && ! direnv status | grep -q 'Found RC allowed true'; then
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error "direnv is blocked, run direnv allow"
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fi
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###### Custom commands
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if [ -f abra-commands.sh ]; then
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# shellcheck disable=SC1091
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source abra-commands.sh
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fi
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if [ -f "$ABRA_STACK_DIR/abra-commands.sh" ]; then
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# shellcheck disable=SC1090
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source "$ABRA_STACK_DIR/abra-commands.sh"
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fi
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###### Subcommand `secret`
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sub_secret_insert() {
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require_stack
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load_context
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SECRET=$1
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VERSION=$2
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PW=$3
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if [ -z "$SECRET" ] || [ -z "$VERSION" ] || [ -z "$PW" ]; then
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error "Required arguments missing"
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echo
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echo "Usage: $PROGRAM_NAME secret insert SECRET VERSION PW"
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exit
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fi
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echo "$PW" | docker secret create "${STACK_NAME}_${SECRET}_${VERSION}" - > /dev/null
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echo "$PW" | pass insert "hosts/$DOCKER_CONTEXT/${STACK_NAME}/${SECRET}" -m > /dev/null
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}
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sub_secret_generate(){
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SECRET=$1
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VERSION=$2
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PWGEN=${3:-pwqgen}
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if [ -z "$SECRET" ] || [ -z "$VERSION" ]; then
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error "Required arguments missing"
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echo
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echo "Usage: $PROGRAM_NAME secret generate SECRET VERSION [PW]"
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exit
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fi
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PW=$($PWGEN)
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success "Password: $PW"
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sub_secret_insert "$SECRET" "$VERSION" "$PW"
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}
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sub_secret() {
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SUBCOMMAND=$1
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shift
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# shellcheck disable=SC2068
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parse_subcommand "$SUBCOMMAND" "secret" $@
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}
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###### Subcommand `run`
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sub_run(){
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require_stack
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if [ "$1" == "-u" ]; then
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RUN_USER="-u $2"
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shift 2
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fi
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SERVICE=$1
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shift
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if [ -z "$SERVICE" ]; then
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echo "Usage: $PROGRAM_NAME run [-u USER] SERVICE [CMD]"
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exit
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fi
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CONTAINER=$(docker container ls --format "table {{.ID}},{{.Names}}" \
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| grep "${STACK_NAME}_${SERVICE}" | head -n1 | cut -d',' -f1)
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if [ -z "$CONTAINER" ]; then
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error "Can't find a container for ${STACK_NAME}_${SERVICE}"
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exit
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fi
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# shellcheck disable=SC2086
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docker exec $RUN_USER -it "$CONTAINER" "$@"
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return
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}
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###### Subcommand `deploy`
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sub_deploy (){
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require_stack
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require_stack_dir
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load_context
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echo "About to deploy:"
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echo " Context: $(tput setaf 4)${DOCKER_CONTEXT}$(tput sgr0)"
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if [ "${COMPOSE_FILE/:/}" == "${COMPOSE_FILE}" ]; then
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echo " Compose: $(tput setaf 3)${ABRA_STACK_DIR}/${COMPOSE_FILE}$(tput sgr0)"
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else
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echo " Compose: $(tput setaf 3)${ABRA_STACK_DIR}/"
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IFS=':' read -ra COMPOSE_FILES <<< "$COMPOSE_FILE"
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for COMPOSE in "${COMPOSE_FILES[@]}"; do
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echo " - ${COMPOSE}"
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done
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tput sgr0
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fi
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if [ -n "$DOMAIN" ]; then
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echo " Domain: $(tput setaf 2)${DOMAIN}$(tput sgr0)"
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fi
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echo " Stack: $(tput setaf 1)${STACK_NAME}$(tput sgr0)"
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read -rp "Continue? (y/[n])? " choice
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case "$choice" in
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y|Y ) ;;
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n|N ) return;;
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* ) return;;
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esac
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(
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cd "$ABRA_STACK_DIR" || error "\$ABRA_STACK_DIR '$ABRA_STACK_DIR' not found"
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# shellcheck disable=SC2086
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if docker stack deploy -c ${COMPOSE_FILE/:/ -c } "$STACK_NAME"; then
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if [ -n "$DOMAIN" ]; then
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success "Yay! App should be available at https://${DOMAIN}"
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else
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success "Yay! That worked. No \$DOMAIN defined, check logs."
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fi
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else
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error "Oh no! Something went wrong 😕 Check errors above"
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fi
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)
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}
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###### Subcommand `logs`
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# Inspired by https://github.com/moby/moby/issues/31458#issuecomment-475411564
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sub_multilogs() {
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require_stack
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require_multitail
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# Get a list of the service names
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SERVICES=$(docker stack services --format "{{.Name}}" "${STACK_NAME}")
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# Sort the service names
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SERVICES=$(echo "${SERVICES}" | sort)
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# Create the command to run
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COMMAND='multitail --mergeall'
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for SERVICE in ${SERVICES}; do
|
|
COMMAND="${COMMAND} -L 'docker service logs --tail 20 -f ${SERVICE}'"
|
|
done
|
|
# Run the command
|
|
bash -c "${COMMAND}"
|
|
}
|
|
|
|
sub_logs (){
|
|
require_stack
|
|
|
|
SERVICE=$1
|
|
|
|
if [ -z "$SERVICE" ]; then
|
|
warning "No \$SERVICE provided, running multilogs"
|
|
sub_multilogs
|
|
fi
|
|
|
|
shift
|
|
|
|
if [ $# -eq 0 ]; then
|
|
LOGS_ARGS="\
|
|
--follow \
|
|
--tail 20 \
|
|
--no-trunc \
|
|
--details \
|
|
--timestamps"
|
|
else
|
|
# shellcheck disable=SC2124
|
|
LOGS_ARGS=$@
|
|
fi
|
|
|
|
# shellcheck disable=SC2086
|
|
docker service logs "${STACK_NAME}_${SERVICE}" $LOGS_ARGS
|
|
}
|
|
|
|
###### Subcommand `cp`
|
|
|
|
sub_cp() {
|
|
require_stack
|
|
|
|
SOURCE=$1
|
|
DEST=$2
|
|
|
|
SERVICE=$(echo "$SOURCE" | grep -o '^[^:]\+:' || echo "$DEST" | grep -o '^[^:]\+:')
|
|
SERVICE=$(echo "$SERVICE" | tr -d ':')
|
|
|
|
if [ -z "$SERVICE" ]; then
|
|
echo "Usage: $PROGRAM_NAME cp SERVICE:SRC_PATH DEST_PATH"
|
|
echo " $PROGRAM_NAME cp SRC_PATH SERVICE:DEST_PATH"
|
|
echo ""
|
|
error "Can't find SERVICE in either SRC or DEST"
|
|
fi
|
|
|
|
CONTAINER=$(docker container ls --format "table {{.ID}},{{.Names}}" \
|
|
| grep "${STACK_NAME}_${SERVICE}" | cut -d',' -f1)
|
|
|
|
if [ -z "$CONTAINER" ]; then
|
|
error "Can't find a container for ${STACK_NAME}_${SERVICE}"
|
|
exit
|
|
fi
|
|
|
|
CP_ARGS=$(echo "$SOURCE $DEST" | sed "s/$SERVICE:/$CONTAINER:/")
|
|
|
|
# shellcheck disable=SC2086
|
|
docker cp ${CP_ARGS}
|
|
}
|
|
|
|
###### Subcommand `context`
|
|
|
|
sub_server_init() {
|
|
export DOCKER_CONTEXT="$1"
|
|
|
|
if [ -n "$DOCKER_CONTEXT" ]; then
|
|
load_context
|
|
fi
|
|
|
|
docker swarm init || true
|
|
docker network create --driver=overlay proxy --scope swarm || true
|
|
}
|
|
|
|
sub_server_add() {
|
|
HOST="$1"
|
|
USERNAME="$2"
|
|
PORT="$3"
|
|
|
|
if [ -n "$PORT" ]; then
|
|
PORT=":$PORT"
|
|
fi
|
|
|
|
if [ -n "$USERNAME" ]; then
|
|
USERNAME="$USERNAME@"
|
|
fi
|
|
|
|
docker context create "$HOST" \
|
|
--docker "host=ssh://$USERNAME$HOST$PORT"
|
|
}
|
|
|
|
sub_server_rm() {
|
|
HOST="$1"
|
|
docker context rm "$HOST"
|
|
}
|
|
|
|
sub_server_use() {
|
|
docker context use "$1"
|
|
}
|
|
|
|
sub_server_ls() {
|
|
docker context ls
|
|
}
|
|
|
|
sub_server() {
|
|
SUBCOMMAND2=$1
|
|
shift
|
|
# shellcheck disable=SC2068
|
|
parse_subcommand "$SUBCOMMAND2" "server" $@
|
|
}
|
|
|
|
|
|
###### Subcommand `upgrade`
|
|
|
|
sub_upgrade() {
|
|
curl -fsSL https://install.abra.autonomic.zone | bash
|
|
}
|
|
|
|
###### Docker alias subcommands
|
|
|
|
sub_stack() {
|
|
# shellcheck disable=SC2068
|
|
docker stack $@
|
|
}
|
|
|
|
sub_volume() {
|
|
# shellcheck disable=SC2068
|
|
docker volume $@
|
|
}
|
|
|
|
###### Main
|
|
|
|
abra() {
|
|
declare abra___stack abra___env abra___config abra__command_ abra__args_
|
|
|
|
DOCOPT_PREFIX=abra_
|
|
eval "$(docopt "$@")"
|
|
|
|
STACK_NAME=$abra___stack
|
|
|
|
if [ -n "$abra___env" ]; then
|
|
# shellcheck disable=SC1090
|
|
source "$abra___env" || error "Unable to load env from '$abra___env'"
|
|
fi
|
|
|
|
if [ -n "$abra___config" ]; then
|
|
require_yq
|
|
|
|
if yml_pattern_exists stack_name; then
|
|
STACK_NAME=$(yq read "$ABRA_CONFIG" stack_name)
|
|
fi
|
|
# FIXME load other variables somehow
|
|
fi
|
|
|
|
# shellcheck disable=SC2086
|
|
"sub_${abra__command_}" ${abra__args_[*]}
|
|
}
|
|
|
|
abra "$@"
|