utils/morty.sh: add script to install morty result proxy

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

1 files changed, 382 insertions, 0 deletions

diff --git a/utils/morty.sh b/utils/morty.sh
new file mode 100755
index 000000000..49f7e2724
--- /dev/null
+++ b/utils/morty.sh
@@ -0,0 +1,382 @@
+#!/usr/bin/env bash
+# -*- coding: utf-8; mode: sh indent-tabs-mode: nil -*-
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+# shellcheck source=utils/lib.sh
+source "$(dirname "${BASH_SOURCE[0]}")/lib.sh"
+source_dot_config
+
+# ----------------------------------------------------------------------------
+# config
+# ----------------------------------------------------------------------------
+
+PUBLIC_URL_PATH_MORTY="/morty"
+PUBLIC_URL_MORTY="$(dirname ${PUBLIC_URL})${PUBLIC_URL_PATH_MORTY}"
+
+MORTY_LISTEN="${MORTY_LISTEN:-127.0.0.1:3000}"
+MORTY_TIMEOUT=5
+
+SERVICE_NAME="morty"
+SERVICE_USER="${SERVICE_USER:-${SERVICE_NAME}}"
+SERVICE_HOME="/home/${SERVICE_USER}"
+SERVICE_SYSTEMD_UNIT="${SYSTEMD_UNITS}/${SERVICE_NAME}.service"
+# shellcheck disable=SC2034
+SERVICE_GROUP="${SERVICE_USER}"
+SERVICE_ENV_DEBUG=false
+
+GO_ENV="${SERVICE_HOME}/.go_env"
+GO_PKG_URL="https://dl.google.com/go/go1.13.5.linux-amd64.tar.gz"
+GO_TAR=$(basename "$GO_PKG_URL")
+
+# shellcheck disable=SC2034
+CONFIG_FILES=()
+
+# Apache Settings
+
+APACHE_MORTY_SITE="morty.conf"
+
+# ----------------------------------------------------------------------------
+usage() {
+# ----------------------------------------------------------------------------
+
+    # shellcheck disable=SC1117
+    cat <<EOF
+
+usage::
+
+  $(basename "$0") shell
+  $(basename "$0") install    [all|user]
+  $(basename "$0") update     [morty]
+  $(basename "$0") remove     [all]
+  $(basename "$0") activate   [service]
+  $(basename "$0") deactivate [service]
+  $(basename "$0") inspect    [service]
+  $(basename "$0") option     [debug-on|debug-off]
+  $(basename "$0") apache     [install|remove]
+
+shell
+  start interactive shell from user ${SERVICE_USER}
+install / remove
+  all:        complete setup of morty service
+  user:       add/remove service user '$SERVICE_USER' at $SERVICE_HOME
+update morty
+  Update morty installation of user ${SERVICE_USER}
+activate service
+  activate and start service daemon (systemd unit)
+deactivate service
+  stop and deactivate service daemon (systemd unit)
+inspect service
+  show service status and log
+option
+  set one of the available options
+apache : ${PUBLIC_URL_MORTY}
+  :install: apache site with a reverse proxy (ProxyPass)
+  :remove:  apache site ${APACHE_MORTY_SITE}
+
+If needed, set the environment variable MORTY_LISTEN in the
+${DOT_CONFIG#"$REPO_ROOT/"} file::
+
+  MORTY_LISTEN :   ${MORTY_LISTEN}
+
+To activate morty in searx, add result_proxy to your settings.yml::
+
+  result_proxy:
+      url : ${PUBLIC_URL_MORTY}
+
+further read: https://asciimoo.github.io/searx/admin/morty.html
+
+EOF
+    [ ! -z ${1+x} ] &&  echo -e "$1"
+}
+
+main() {
+    rst_title "$SERVICE_NAME" part
+
+    required_commands \
+        dpkg apt-get install git wget curl \
+        || exit
+
+    local _usage="ERROR: unknown or missing $1 command $2"
+
+    case $1 in
+        --source-only)  ;;
+        -h|--help) usage; exit 0;;
+
+        shell)
+            sudo_or_exit
+            interactive_shell "${SERVICE_USER}"
+            ;;
+        inspect)
+            case $2 in
+                service)
+                    sudo_or_exit
+                    inspect_service
+                    ;;
+                *) usage "$_usage"; exit 42;;
+            esac ;;
+        install)
+            sudo_or_exit
+            case $2 in
+                all) install_all ;;
+                user) assert_user ;;
+                *) usage "$_usage"; exit 42;;
+            esac ;;
+        update)
+            sudo_or_exit
+            case $2 in
+                morty) update_morty ;;
+                *) usage "$_usage"; exit 42;;
+            esac ;;
+        remove)
+            sudo_or_exit
+            case $2 in
+                all) remove_all;;
+                user) drop_service_account "${SERVICE_USER}" ;;
+                *) usage "$_usage"; exit 42;;
+            esac ;;
+        activate)
+            sudo_or_exit
+            case $2 in
+                service)  systemd_activate_service "${SERVICE_NAME}" ;;
+                *) usage "$_usage"; exit 42;;
+            esac ;;
+        deactivate)
+            sudo_or_exit
+            case $2 in
+                service)  systemd_deactivate_service "${SERVICE_NAME}" ;;
+                *) usage "$_usage"; exit 42;;
+            esac ;;
+        apache)
+            sudo_or_exit
+            case $2 in
+                install) install_apache_site ;;
+                remove) remove_apache_site ;;
+                *) usage "$_usage"; exit 42;;
+            esac ;;
+        option)
+            sudo_or_exit
+            case $2 in
+                debug-on)  enable_debug ;;
+                debug-off)  disable_debug ;;
+                *) usage "$_usage"; exit 42;;
+            esac ;;
+
+        *) usage "ERROR: unknown or missing command $1"; exit 42;;
+    esac
+}
+
+install_all() {
+    rst_title "Install $SERVICE_NAME (service)"
+    assert_user
+    wait_key
+    install_go "${GO_PKG_URL}" "${GO_TAR}" "${SERVICE_USER}"
+    wait_key
+    install_morty
+    wait_key
+    systemd_install_service "${SERVICE_NAME}" "${SERVICE_SYSTEMD_UNIT}"
+    wait_key
+    echo
+    if ! service_is_available "http://${MORTY_LISTEN}" ; then
+        err_msg "Morty does not listening on: http://${MORTY_LISTEN}"
+    fi
+    if ask_yn "Do you want to inspect the installation?" Yn; then
+        inspect_service
+    fi
+
+}
+
+remove_all() {
+    rst_title "De-Install $SERVICE_NAME (service)"
+
+    rst_para "\
+It goes without saying that this script can only be used to remove
+installations that were installed with this script."
+
+    if systemd_remove_service "${SERVICE_NAME}" "${SERVICE_SYSTEMD_UNIT}"; then
+        drop_service_account "${SERVICE_USER}"
+    fi
+}
+
+assert_user() {
+    rst_title "user $SERVICE_USER" section
+    echo
+    tee_stderr 1 <<EOF | bash | prefix_stdout
+sudo -H adduser --shell /bin/bash --system --home $SERVICE_HOME \
+    --disabled-password --group --gecos 'Morty' $SERVICE_USER
+sudo -H usermod -a -G shadow $SERVICE_USER
+groups $SERVICE_USER
+EOF
+    SERVICE_HOME="$(sudo -i -u "$SERVICE_USER" echo \$HOME)"
+    export SERVICE_HOME
+    echo "export SERVICE_HOME=$SERVICE_HOME"
+
+    cat > "$GO_ENV" <<EOF
+export GOPATH=\$HOME/go-apps
+export PATH=\$PATH:\$HOME/local/go/bin:\$GOPATH/bin
+EOF
+    echo "Environment $GO_ENV has been setup."
+
+    tee_stderr <<EOF | sudo -i -u "$SERVICE_USER"
+grep -qFs -- 'source $GO_ENV' ~/.profile || echo 'source $GO_ENV' >> ~/.profile
+EOF
+}
+
+morty_is_installed() {
+    [[ -f $SERVICE_HOME/go-apps/bin/morty ]]
+}
+
+_svcpr="  |${SERVICE_USER}| "
+
+install_morty() {
+    rst_title "Install morty in user's ~/go-apps" section
+    echo
+    tee_stderr <<EOF | sudo -i -u "$SERVICE_USER" 2>&1 | prefix_stdout "$_svcpr"
+go get -v -u github.com/asciimoo/morty
+EOF
+    tee_stderr <<EOF | sudo -i -u "$SERVICE_USER" 2>&1 | prefix_stdout "$_svcpr"
+cd \$GOPATH/src/github.com/asciimoo/morty
+go test
+go test -benchmem -bench .
+EOF
+}
+
+update_morty() {
+    rst_title "Update morty" section
+    echo
+    tee_stderr <<EOF | sudo -i -u "$SERVICE_USER" 2>&1 | prefix_stdout "$_svcpr"
+go get -v -u github.com/asciimoo/morty
+EOF
+    tee_stderr <<EOF | sudo -i -u "$SERVICE_USER" 2>&1 | prefix_stdout "$_svcpr"
+cd \$GOPATH/src/github.com/asciimoo/morty
+go test
+go test -benchmem -bench .
+EOF
+}
+
+set_service_env_debug() {
+
+    # usage:  set_service_env_debug [false|true]
+
+    local SERVICE_ENV_DEBUG="${1:-false}"
+    if systemd_remove_service "${SERVICE_NAME}" "${SERVICE_SYSTEMD_UNIT}"; then
+        systemd_install_service "${SERVICE_NAME}" "${SERVICE_SYSTEMD_UNIT}"
+    fi
+}
+
+inspect_service() {
+
+    rst_title "service status & log"
+
+    cat <<EOF
+
+sourced ${DOT_CONFIG#"$REPO_ROOT/"} :
+
+  MORTY_LISTEN :   ${MORTY_LISTEN}
+
+EOF
+
+    if service_account_is_available "$SERVICE_USER"; then
+        info_msg "service account $SERVICE_USER available."
+    else
+        err_msg "service account $SERVICE_USER not available!"
+    fi
+    if go_is_available "$SERVICE_USER"; then
+        info_msg "~$SERVICE_USER: go is installed"
+    else
+        err_msg "~$SERVICE_USER: go is not installed"
+    fi
+    if morty_is_installed; then
+        info_msg "~$SERVICE_USER: morty app is installed"
+    else
+        err_msg "~$SERVICE_USER: morty app is not installed!"
+    fi
+
+    if ! service_is_available "http://${MORTY_LISTEN}" ; then
+        err_msg "Morty does not listening on: http://${MORTY_LISTEN}"
+        echo -e "${_Green}stop with [${_BCyan}CTRL-C${_Green}] or .."
+        wait_key
+    fi
+
+    local _debug_on
+    if ask_yn "Enable filtron debug mode?"; then
+        enable_debug
+        _debug_on=1
+    fi
+
+    echo
+    systemctl --no-pager -l status "${SERVICE_NAME}"
+    echo
+
+    # shellcheck disable=SC2059
+    info_msg "morty URL --> http://${MORTY_LISTEN}"
+    info_msg "public URL --> ${PUBLIC_URL_MORTY}"
+    printf "// use ${_BCyan}CTRL-C${_creset} to stop monitoring the log"
+    read -r -s -n1 -t 2
+    echo
+    while true;  do
+        trap break 2
+        journalctl -f -u "${SERVICE_NAME}"
+    done
+
+    if [[ $_debug_on == 1 ]]; then
+        FORCE_SELECTION=Y disable_debug
+    fi
+    return 0
+}
+
+
+enable_debug() {
+    warn_msg "Do not enable debug in production enviroments!!"
+    info_msg "Enabling debug option needs to reinstall systemd service!"
+    set_service_env_debug true
+}
+
+disable_debug() {
+    info_msg "Disabling debug option needs to reinstall systemd service!"
+    set_service_env_debug false
+}
+
+install_apache_site() {
+
+    rst_title "Install Apache site $APACHE_MORTY_SITE"
+
+    rst_para "\
+This installs a reverse proxy (ProxyPass) into apache site (${APACHE_MORTY_SITE})"
+
+    ! apache_is_installed && err_msg "Apache is not installed."
+
+    if ! ask_yn "Do you really want to continue?"; then
+        return
+    fi
+
+    a2enmod headers
+    a2enmod proxy
+    a2enmod proxy_http
+
+    echo
+    apache_install_site "${APACHE_MORTY_SITE}"
+
+    info_msg "testing public url .."
+    if ! service_is_available "${PUBLIC_URL_MORTY}"; then
+        err_msg "Public service at ${PUBLIC_URL_MORTY} is not available!"
+    fi
+}
+
+remove_apache_site() {
+
+    rst_title "Remove Apache site $APACHE_MORTY_SITE"
+
+    rst_para "\
+This removes apache site ${APACHE_MORTY_SITE}."
+
+    ! apache_is_installed && err_msg "Apache is not installed."
+
+    if ! ask_yn "Do you really want to continue?"; then
+        return
+    fi
+
+    apache_remove_site "$APACHE_MORTY_SITE"
+}
+# ----------------------------------------------------------------------------
+main "$@"
+# ----------------------------------------------------------------------------