Install requirements via install script

Closes https://git.autonomic.zone/coop-cloud/abra/issues/196.

.drone.yml

@@ -3,21 +3,27 @@ kind: pipeline
 name: linters
 steps:
   - name: run shellcheck
-    image: koalaman/shellcheck-alpine:v0.7.1
+    image: koalaman/shellcheck-alpine
     commands:
       - shellcheck abra
       - shellcheck bin/*.sh
+      - shellcheck deploy/install.abra.coopcloud.tech/installer
 
   - name: run flake8
-    image: alpine/flake8:3.9.0
+    image: alpine/flake8
     commands:
-      - flake8 --max-line-length 100 bin/app-json.py
+      - flake8 --max-line-length 100 bin/*.py
 
   - name: run unit tests
     image: decentral1se/docker-dind-bats-kcov
     commands:
       - bats tests
 
+  - name: test installation script
+    image: debian:buster
+    commands:
+      - deploy/install.abra.coopcloud.tech/installer --no-prompt
+
   - name: publish image
     image: plugins/docker
     settings:
@@ -31,6 +37,7 @@ steps:
       - run shellcheck
       - run flake8
       - run unit tests
+      - test installation script
     when:
       event:
         exclude:
@@ -49,6 +56,7 @@ steps:
       - run shellcheck
       - run flake8
       - run unit tests
+      - test installation script
       - publish image
     when:
       event:
@@ -67,6 +75,7 @@ steps:
       - run shellcheck
       - run flake8
       - run unit tests
+      - test installation script
       - publish image
       - trigger downstream builds
     when:

CHANGELOG.md

@@ -19,6 +19,7 @@
 - Fix logging for chaos deploys and recipe selection logic ([#185](https://git.autonomic.zone/coop-cloud/abra/issues/185))
 - Improve reliability of selectig when to download a new `apps.json` ([#170](https://git.autonomic.zone/coop-cloud/abra/issues/170))
 - Remove `pwgen`/`pwqgen` as password generator requirements ([#167](https://git.autonomic.zone/coop-cloud/abra/issues/167))
+- `abra` installer script will now try to install system requirements ([#196](https://git.autonomic.zone/coop-cloud/abra/issues/196))
 
 # abra 9.0.0 (2021-06-10)
 

README.md

@@ -39,13 +39,18 @@ Install the latest stable release:
 curl https://install.abra.coopcloud.tech | bash
 ```
 
-or the bleeding-edge development version:
+The source for this script is [here](./deploy/install.abra.coopcloud.tech/installer).
+
+You can pass options to the script like so (e.g. install the bleeding edge development version):
 
 ```sh
 curl https://install.abra.coopcloud.tech | bash -s -- --dev
 ```
 
-The source for this script is [here](./deploy/install.abra.coopcloud.tech/installer).
+Other options available are as follows:
+
+- **--no-prompt**: non-interactive installation
+- **--no-deps**: do not attempt to install [requirements](#requirements)
 
 ## Container
 

abra

@@ -2627,7 +2627,7 @@ abra() {
   # Use abra__command_ in case `command` is provided (i.e. `volume` or `stack`)
   CMD="sub_${abra__command_}"
   if type "$CMD" > /dev/null 2>&1; then
-    # shellcheck disable=SC2086
+    # shellcheck disable=SC2086,SC2048
     "$CMD" ${abra__args_[*]}
   else
     docopt_exit

deploy/install.abra.coopcloud.tech/installer

@@ -1,10 +1,180 @@
-#!/bin/bash
+#!/usr/bin/env bash
+
+# shellcheck disable=SC2154,SC2034
 
 ABRA_VERSION="9.0.0"
 GIT_URL="https://git.autonomic.zone/coop-cloud/abra"
 ABRA_SRC="$GIT_URL/raw/tag/$ABRA_VERSION/abra"
 ABRA_DIR="${ABRA_DIR:-$HOME/.abra}"
 
+DOC="
+abra command-line installer script
+
+Usage:
+  installer [options]
+
+Options:
+  -h, --help            Show this message and exit
+  -d, --dev             Install bleeding edge development version
+  -n, --no-prompt       Don't prompt for input and run non-interactively
+  -p, --no-deps         Don't attempt to install system dependencies
+"
+
+# docopt parser below, refresh this parser with `docopt.sh installer`
+# shellcheck disable=2016,1075
+docopt() { parse() { if ${DOCOPT_DOC_CHECK:-true}; then local doc_hash
+if doc_hash=$(printf "%s" "$DOC" | (sha256sum 2>/dev/null || shasum -a 256)); then
+if [[ ${doc_hash:0:5} != "$digest" ]]; then
+stderr "The current usage doc (${doc_hash:0:5}) does not match \
+what the parser was generated with (${digest})
+Run \`docopt.sh\` to refresh the parser."; _return 70; fi; fi; fi
+local root_idx=$1; shift; argv=("$@"); parsed_params=(); parsed_values=()
+left=(); testdepth=0; local arg; while [[ ${#argv[@]} -gt 0 ]]; do
+if [[ ${argv[0]} = "--" ]]; then for arg in "${argv[@]}"; do
+parsed_params+=('a'); parsed_values+=("$arg"); done; break
+elif [[ ${argv[0]} = --* ]]; then parse_long
+elif [[ ${argv[0]} = -* && ${argv[0]} != "-" ]]; then parse_shorts
+elif ${DOCOPT_OPTIONS_FIRST:-false}; then for arg in "${argv[@]}"; do
+parsed_params+=('a'); parsed_values+=("$arg"); done; break; else
+parsed_params+=('a'); parsed_values+=("${argv[0]}"); argv=("${argv[@]:1}"); fi
+done; local idx; if ${DOCOPT_ADD_HELP:-true}; then
+for idx in "${parsed_params[@]}"; do [[ $idx = 'a' ]] && continue
+if [[ ${shorts[$idx]} = "-h" || ${longs[$idx]} = "--help" ]]; then
+stdout "$trimmed_doc"; _return 0; fi; done; fi
+if [[ ${DOCOPT_PROGRAM_VERSION:-false} != 'false' ]]; then
+for idx in "${parsed_params[@]}"; do [[ $idx = 'a' ]] && continue
+if [[ ${longs[$idx]} = "--version" ]]; then stdout "$DOCOPT_PROGRAM_VERSION"
+_return 0; fi; done; fi; local i=0; while [[ $i -lt ${#parsed_params[@]} ]]; do
+left+=("$i"); ((i++)) || true; done
+if ! required "$root_idx" || [ ${#left[@]} -gt 0 ]; then error; fi; return 0; }
+parse_shorts() { local token=${argv[0]}; local value; argv=("${argv[@]:1}")
+[[ $token = -* && $token != --* ]] || _return 88; local remaining=${token#-}
+while [[ -n $remaining ]]; do local short="-${remaining:0:1}"
+remaining="${remaining:1}"; local i=0; local similar=(); local match=false
+for o in "${shorts[@]}"; do if [[ $o = "$short" ]]; then similar+=("$short")
+[[ $match = false ]] && match=$i; fi; ((i++)) || true; done
+if [[ ${#similar[@]} -gt 1 ]]; then
+error "${short} is specified ambiguously ${#similar[@]} times"
+elif [[ ${#similar[@]} -lt 1 ]]; then match=${#shorts[@]}; value=true
+shorts+=("$short"); longs+=(''); argcounts+=(0); else value=false
+if [[ ${argcounts[$match]} -ne 0 ]]; then if [[ $remaining = '' ]]; then
+if [[ ${#argv[@]} -eq 0 || ${argv[0]} = '--' ]]; then
+error "${short} requires argument"; fi; value=${argv[0]}; argv=("${argv[@]:1}")
+else value=$remaining; remaining=''; fi; fi; if [[ $value = false ]]; then
+value=true; fi; fi; parsed_params+=("$match"); parsed_values+=("$value"); done
+}; parse_long() { local token=${argv[0]}; local long=${token%%=*}
+local value=${token#*=}; local argcount; argv=("${argv[@]:1}")
+[[ $token = --* ]] || _return 88; if [[ $token = *=* ]]; then eq='='; else eq=''
+value=false; fi; local i=0; local similar=(); local match=false
+for o in "${longs[@]}"; do if [[ $o = "$long" ]]; then similar+=("$long")
+[[ $match = false ]] && match=$i; fi; ((i++)) || true; done
+if [[ $match = false ]]; then i=0; for o in "${longs[@]}"; do
+if [[ $o = $long* ]]; then similar+=("$long"); [[ $match = false ]] && match=$i
+fi; ((i++)) || true; done; fi; if [[ ${#similar[@]} -gt 1 ]]; then
+error "${long} is not a unique prefix: ${similar[*]}?"
+elif [[ ${#similar[@]} -lt 1 ]]; then
+[[ $eq = '=' ]] && argcount=1 || argcount=0; match=${#shorts[@]}
+[[ $argcount -eq 0 ]] && value=true; shorts+=(''); longs+=("$long")
+argcounts+=("$argcount"); else if [[ ${argcounts[$match]} -eq 0 ]]; then
+if [[ $value != false ]]; then
+error "${longs[$match]} must not have an argument"; fi
+elif [[ $value = false ]]; then
+if [[ ${#argv[@]} -eq 0 || ${argv[0]} = '--' ]]; then
+error "${long} requires argument"; fi; value=${argv[0]}; argv=("${argv[@]:1}")
+fi; if [[ $value = false ]]; then value=true; fi; fi; parsed_params+=("$match")
+parsed_values+=("$value"); }; required() { local initial_left=("${left[@]}")
+local node_idx; ((testdepth++)) || true; for node_idx in "$@"; do
+if ! "node_$node_idx"; then left=("${initial_left[@]}"); ((testdepth--)) || true
+return 1; fi; done; if [[ $((--testdepth)) -eq 0 ]]; then
+left=("${initial_left[@]}"); for node_idx in "$@"; do "node_$node_idx"; done; fi
+return 0; }; optional() { local node_idx; for node_idx in "$@"; do
+"node_$node_idx"; done; return 0; }; switch() { local i
+for i in "${!left[@]}"; do local l=${left[$i]}
+if [[ ${parsed_params[$l]} = "$2" ]]; then
+left=("${left[@]:0:$i}" "${left[@]:((i+1))}")
+[[ $testdepth -gt 0 ]] && return 0; if [[ $3 = true ]]; then
+eval "((var_$1++))" || true; else eval "var_$1=true"; fi; return 0; fi; done
+return 1; }; stdout() { printf -- "cat <<'EOM'\n%s\nEOM\n" "$1"; }; stderr() {
+printf -- "cat <<'EOM' >&2\n%s\nEOM\n" "$1"; }; error() {
+[[ -n $1 ]] && stderr "$1"; stderr "$usage"; _return 1; }; _return() {
+printf -- "exit %d\n" "$1"; exit "$1"; }; set -e; trimmed_doc=${DOC:1:333}
+usage=${DOC:37:28}; digest=36916; shorts=(-h -d -n -p)
+longs=(--help --dev --no-prompt --no-deps); argcounts=(0 0 0 0); node_0(){
+switch __help 0; }; node_1(){ switch __dev 1; }; node_2(){ switch __no_prompt 2
+}; node_3(){ switch __no_deps 3; }; node_4(){ optional 0 1 2 3; }; node_5(){
+optional 4; }; node_6(){ required 5; }; node_7(){ required 6; }
+cat <<<' docopt_exit() { [[ -n $1 ]] && printf "%s\n" "$1" >&2
+printf "%s\n" "${DOC:37:28}" >&2; exit 1; }'; unset var___help var___dev \
+var___no_prompt var___no_deps; parse 7 "$@"; local prefix=${DOCOPT_PREFIX:-''}
+unset "${prefix}__help" "${prefix}__dev" "${prefix}__no_prompt" \
+"${prefix}__no_deps"; eval "${prefix}"'__help=${var___help:-false}'
+eval "${prefix}"'__dev=${var___dev:-false}'
+eval "${prefix}"'__no_prompt=${var___no_prompt:-false}'
+eval "${prefix}"'__no_deps=${var___no_deps:-false}'; local docopt_i=1
+[[ $BASH_VERSION =~ ^4.3 ]] && docopt_i=2; for ((;docopt_i>0;docopt_i--)); do
+declare -p "${prefix}__help" "${prefix}__dev" "${prefix}__no_prompt" \
+"${prefix}__no_deps"; done; }
+# docopt parser above, complete command for generating this parser is `docopt.sh installer`
+
+function prompt_confirm {
+  if [ "$no_prompt" == "true" ]; then
+    return
+  fi
+
+  read -rp "Continue? [y/N]? " choice
+
+  case "$choice" in
+    y|Y ) return ;;
+    * ) exit;;
+  esac
+}
+
+function show_banner {
+  echo ""
+  echo "   ____                           ____ _                 _ "
+  echo "  / ___|___         ___  _ __    / ___| | ___  _   _  __| |"
+  echo " | |   / _ \ _____ / _ \| '_ \  | |   | |/ _ \| | | |/ _' |"
+  echo " | |__| (_) |_____| (_) | |_) | | |___| | (_) | |_| | (_| |"
+  echo "  \____\___/       \___/| .__/   \____|_|\___/ \__,_|\__,_|"
+  echo "                        |_|"
+  echo ""
+}
+
+function install_docker {
+  sudo apt-get remove docker docker-engine docker.io containerd runc
+  sudo apt-get install \
+    apt-transport-https \
+    ca-certificates \
+    curl \
+    gnupg \
+    lsb-release
+  curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
+  echo \
+  "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian \
+  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
+  sudo apt-get update
+  sudo apt-get install docker-ce docker-ce-cli containerd.io
+}
+
+function install_requirements {
+  if [ -f "/etc/debian_version" ]; then
+    echo "Detected Debian based distribution, attempting to install system requirements..."
+
+    sudo apt update && sudo apt install -y \
+      curl \
+      pwgen \
+      pwqgen
+
+    echo "Install Docker (https://docs.docker.com/engine/install/debian/)?"
+    prompt_confirm
+    install_docker
+  else
+    echo "Sorry, we only support Debian based distributions at the moment"
+    echo "You'll have to install the requirements manually for your distribution"
+    echo "See https://git.autonomic.zone/coop-cloud/abra#requirements for more"
+  fi
+}
+
 function install_abra_release {
   mkdir -p "$HOME/.local/bin"
   curl "$ABRA_SRC" > "$HOME/.local/bin/abra"
@@ -24,11 +194,25 @@ function install_abra_dev {
 }
 
 function run_installation {
-  if [ "$1" = "--dev" ]; then
+  DOCOPT_PREFIX=installer_
+  DOCOPT_ADD_HELP=false
+  eval "$(docopt "$@")"
+
+  dev="$installer___dev"
+  no_prompt="$installer___no_prompt"
+  no_deps="$installer___no_deps"
+
+  show_banner
+
+  if [ "$dev" == "true" ]; then
     install_abra_dev
   else
     install_abra_release
   fi
+
+  if [ "$no_deps" == "false" ]; then
+    install_requirements
+  fi
 }
 
 run_installation "$@"

makefile

@@ -1,4 +1,4 @@
-.PHONY: test shellcheck docopt release-installer build push
+.PHONY: test shellcheck docopt release-installer build push deploy-docopt symlink
 
 test:
 	@sudo DOCKER_CONTEXT=default docker run \
@@ -21,8 +21,9 @@ shellcheck:
 		--rm \
 		-v $$(pwd):/workdir \
 		koalaman/shellcheck-alpine \
-		shellcheck /workdir/abra && \
-		shellcheck /workdir/bin/*.sh
+		sh -c "shellcheck /workdir/abra && \
+		       shellcheck /workdir/bin/*.sh && \
+		       shellcheck /workdir/deploy/install.abra.coopcloud.tech/installer"
 
 docopt:
 	@if [ ! -d ".venv" ]; then \
@@ -32,6 +33,14 @@ docopt:
 	fi
 	.venv/bin/docopt.sh abra
 
+deploy-docopt:
+	@if [ ! -d ".venv" ]; then \
+		python3 -m venv .venv && \
+		.venv/bin/pip install -U pip setuptools wheel && \
+		.venv/bin/pip install docopt-sh; \
+	fi
+	.venv/bin/docopt.sh deploy/install.abra.coopcloud.tech/installer
+
 release-installer:
 	@DOCKER_CONTEXT=swarm.autonomic.zone \
 		docker stack rm abra-installer-script && \