mirror of
https://github.com/YunoHost-Apps/discourse_ynh.git
synced 2024-09-03 18:26:18 +02:00
361 lines
12 KiB
Bash
361 lines
12 KiB
Bash
#!/bin/bash
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#=================================================
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# COMMON VARIABLES
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#=================================================
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pkg_dependencies="g++ libjemalloc1|libjemalloc2 libjemalloc-dev zlib1g-dev libreadline-dev libpq-dev libssl-dev libyaml-dev libcurl4-openssl-dev libapr1-dev libxslt1-dev checkinstall libxml2-dev vim imagemagick postgresql postgresql-server-dev-all postgresql-contrib optipng jhead jpegoptim gifsicle brotli"
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RUBY_VERSION="2.6.5"
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#=================================================
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# PERSONAL HELPERS
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#=================================================
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# Execute a command as another user with login
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# (hence in user home dir, with prior loading of .profile, etc.)
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# usage: exec_login_as USER COMMAND [ARG ...]
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exec_login_as() {
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local user=$1
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shift 1
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exec_as $user --login "$@"
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}
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# Execute a command as another user
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# usage: exec_as USER COMMAND [ARG ...]
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exec_as() {
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local user=$1
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shift 1
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if [[ $user = $(whoami) ]]; then
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eval "$@"
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else
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sudo -u "$user" "$@"
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fi
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}
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# Returns true if a swap partition is enabled, false otherwise
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# usage: is_swap_present
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is_swap_present() {
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[ $(awk '/^SwapTotal:/{print $2}' /proc/meminfo) -gt 0 ]
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}
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# Returns true if swappiness higher than 50
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# usage: is_swappiness_sufficient
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is_swappiness_sufficient() {
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[ $(cat /proc/sys/vm/swappiness) -gt 50 ]
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}
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# Returns true if specified free memory is available (RAM + swap)
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# usage: is_memory_available MEMORY (in bytes)
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is_memory_available() {
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local needed_memory=$1
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local freemem="$(awk '/^MemAvailable:/{print $2}' /proc/meminfo)"
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local freeswap="$(awk '/^SwapFree:/{print $2}' /proc/meminfo)"
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[ $(($freemem+$freeswap)) -gt $needed_memory ]
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}
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# Checks discourse install memory requirements
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# terminates installation if requirements not met
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check_memory_requirements() {
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if ! is_swap_present ; then
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ynh_die --message="You must have a swap partition in order to install and use this application"
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elif ! is_swappiness_sufficient ; then
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ynh_die --message="Your swappiness must be higher than 50; please see https://en.wikipedia.org/wiki/Swappiness"
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elif ! is_memory_available 1000000 ; then
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ynh_die --message="You must have a minimum of 1Gb available memory (RAM+swap) for the installation"
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fi
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}
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# Checks discourse upgrade memory requirements
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# Less requirements as the software is already installed and running
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# terminates upgrade if requirements not met
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check_memory_requirements_upgrade() {
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if ! is_memory_available 400000 ; then
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ynh_die --message="You must have a minimum of 400Mb available memory (RAM+swap) for the upgrade"
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fi
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}
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ynh_maintenance_mode_ON () {
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# Load value of $path_url and $domain from the config if their not set
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if [ -z $path_url ]; then
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path_url=$(ynh_app_setting_get $app path)
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fi
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if [ -z $domain ]; then
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domain=$(ynh_app_setting_get $app domain)
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fi
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# Create an html to serve as maintenance notice
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echo "<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="refresh" content="3">
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<title>Your app $app is currently under maintenance!</title>
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<style>
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body {
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width: 70em;
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margin: 0 auto;
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}
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</style>
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</head>
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<body>
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<h1>Your app $app is currently under maintenance!</h1>
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<p>This app has been put under maintenance by your administrator at $(date)</p>
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<p>Please wait until the maintenance operation is done. This page will be reloaded as soon as your app will be back.</p>
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</body>
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</html>" > "/var/www/html/maintenance.$app.html"
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# Create a new nginx config file to redirect all access to the app to the maintenance notice instead.
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echo "# All request to the app will be redirected to ${path_url}_maintenance and fall on the maintenance notice
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rewrite ^${path_url}/(.*)$ ${path_url}_maintenance/? redirect;
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# Use another location, to not be in conflict with the original config file
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location ${path_url}_maintenance/ {
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alias /var/www/html/ ;
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try_files maintenance.$app.html =503;
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# Include SSOWAT user panel.
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include conf.d/yunohost_panel.conf.inc;
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}" > "/etc/nginx/conf.d/$domain.d/maintenance.$app.conf"
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# The current config file will redirect all requests to the root of the app.
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# To keep the full path, we can use the following rewrite rule:
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# rewrite ^${path_url}/(.*)$ ${path_url}_maintenance/\$1? redirect;
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# The difference will be in the $1 at the end, which keep the following queries.
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# But, if it works perfectly for a html request, there's an issue with any php files.
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# This files are treated as simple files, and will be downloaded by the browser.
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# Would be really be nice to be able to fix that issue. So that, when the page is reloaded after the maintenance, the user will be redirected to the real page he was.
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systemctl reload nginx
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}
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ynh_maintenance_mode_OFF () {
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# Load value of $path_url and $domain from the config if their not set
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if [ -z $path_url ]; then
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path_url=$(ynh_app_setting_get $app path)
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fi
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if [ -z $domain ]; then
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domain=$(ynh_app_setting_get $app domain)
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fi
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# Rewrite the nginx config file to redirect from ${path_url}_maintenance to the real url of the app.
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echo "rewrite ^${path_url}_maintenance/(.*)$ ${path_url}/\$1 redirect;" > "/etc/nginx/conf.d/$domain.d/maintenance.$app.conf"
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systemctl reload nginx
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# Sleep 4 seconds to let the browser reload the pages and redirect the user to the app.
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sleep 4
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# Then remove the temporary files used for the maintenance.
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rm "/var/www/html/maintenance.$app.html"
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rm "/etc/nginx/conf.d/$domain.d/maintenance.$app.conf"
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systemctl reload nginx
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}
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#=================================================
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# EXPERIMENTAL HELPERS
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#=================================================
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#=================================================
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# FUTURE OFFICIAL HELPERS
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#=================================================
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#=================================================
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# RUBY HELPER
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#=================================================
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rbenv_install_dir="/opt/rbenv"
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# RBENV_ROOT is the directory of rbenv, it needs to be loaded as a environment variable.
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export RBENV_ROOT="$rbenv_install_dir"
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# Install ruby version management
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#
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# [internal]
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#
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# usage: ynh_install_rbenv
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ynh_install_rbenv () {
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echo "Installation of rbenv - ruby version management" >&2
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# Build an app.src for rbenv
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mkdir -p "../conf"
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echo "SOURCE_URL=https://github.com/rbenv/rbenv/archive/v1.1.2.tar.gz
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SOURCE_SUM=80ad89ffe04c0b481503bd375f05c212bbc7d44ef5f5e649e0acdf25eba86736" > "../conf/rbenv.src"
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# Download and extract rbenv
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ynh_setup_source "$rbenv_install_dir" rbenv
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# Build an app.src for ruby-build
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mkdir -p "../conf"
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echo "SOURCE_URL=https://github.com/rbenv/ruby-build/archive/v20191004.tar.gz
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SOURCE_SUM=6f053957acb0af6d621ebf2b9dacc9c265844b2dc6842a021eb10f0a70094fe8" > "../conf/ruby-build.src"
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# Download and extract ruby-build
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ynh_setup_source "$rbenv_install_dir/plugins/ruby-build" ruby-build
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(cd $rbenv_install_dir
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./src/configure && make -C src)
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# Create shims directory if needed
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if [ ! -d $rbenv_install_dir/shims ] ; then
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mkdir $rbenv_install_dir/shims
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fi
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}
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# Install a specific version of ruby
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#
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# ynh_install_ruby will install the version of ruby provided as argument by using rbenv.
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#
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# rbenv (ruby version management) stores the target ruby version in a .ruby_version file created in the target folder (using rbenv local <version>)
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# It then uses that information for every ruby user that uses rbenv provided ruby command
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#
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# This helper creates a /etc/profile.d/rbenv.sh that configures PATH environment for rbenv
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# for every LOGIN user, hence your user must have a defined shell (as opposed to /usr/sbin/nologin)
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#
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# Don't forget to execute ruby-dependent command in a login environment
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# (e.g. sudo --login option)
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# When not possible (e.g. in systemd service definition), please use direct path
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# to rbenv shims (e.g. $RBENV_ROOT/shims/bundle)
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#
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# usage: ynh_install_ruby ruby_version user
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# | arg: -v, --ruby_version= - Version of ruby to install.
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# If possible, prefer to use major version number (e.g. 8 instead of 8.10.0).
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# The crontab will handle the update of minor versions when needed.
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ynh_install_ruby () {
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# Declare an array to define the options of this helper.
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declare -Ar args_array=( [v]=ruby_version= )
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# Use rbenv, https://github.com/rbenv/rbenv to manage the ruby versions
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local ruby_version
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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# Create $rbenv_install_dir
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mkdir -p "$rbenv_install_dir/plugins/ruby-build"
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# Load rbenv path in PATH
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CLEAR_PATH="$rbenv_install_dir/bin:$PATH"
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# Remove /usr/local/bin in PATH in case of ruby prior installation
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PATH=$(echo $CLEAR_PATH | sed 's@/usr/local/bin:@@')
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# Move an existing ruby binary, to avoid to block rbenv
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test -x /usr/bin/ruby && mv /usr/bin/ruby /usr/bin/ruby_rbenv
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# If rbenv is not previously setup, install it
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if ! type rbenv > /dev/null 2>&1
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then
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ynh_install_rbenv
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elif dpkg --compare-versions "$(/opt/rbenv/bin/rbenv --version | cut -d" " -f2)" lt "1.1.2"
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then
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ynh_install_rbenv
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fi
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# Restore /usr/local/bin in PATH (if needed)
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PATH=$CLEAR_PATH
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# And replace the old ruby binary
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test -x /usr/bin/ruby_rbenv && mv /usr/bin/ruby_rbenv /usr/bin/ruby
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# Install the requested version of ruby
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CONFIGURE_OPTS="--disable-install-doc" MAKE_OPTS="-j2" rbenv install --skip-existing $ruby_version
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# Store the ID of this app and the version of ruby requested for it
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echo "$YNH_APP_ID:$ruby_version" | tee --append "$rbenv_install_dir/ynh_app_version"
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# Store ruby_version into the config of this app
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ynh_app_setting_set $app ruby_version $ruby_version
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# Set environment for ruby users
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echo "#rbenv
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export RBENV_ROOT=$rbenv_install_dir
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export PATH=\"$rbenv_install_dir/bin:$PATH\"
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eval \"\$(rbenv init -)\"
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#rbenv" > /etc/profile.d/rbenv.sh
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# Load the right environment for the Installation
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eval "$(rbenv init -)"
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(cd $final_path
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rbenv local $ruby_version)
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}
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# Remove the version of ruby used by the app.
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#
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# This helper will check if another app uses the same version of ruby,
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# if not, this version of ruby will be removed.
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# If no other app uses ruby, rbenv will be also removed.
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#
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# usage: ynh_remove_ruby
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ynh_remove_ruby () {
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ruby_version=$(ynh_app_setting_get $app ruby_version)
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# Remove the line for this app
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sed --in-place "/$YNH_APP_ID:$ruby_version/d" "$rbenv_install_dir/ynh_app_version"
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# If no other app uses this version of ruby, remove it.
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if ! grep --quiet "$ruby_version" "$rbenv_install_dir/ynh_app_version"
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then
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$rbenv_install_dir/bin/rbenv uninstall --force $ruby_version
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fi
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# Remove rbenv environment configuration
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rm /etc/profile.d/rbenv.sh
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# If no other app uses rbenv, remove rbenv and dedicated group
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if [ ! -s "$rbenv_install_dir/ynh_app_version" ]
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then
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ynh_secure_remove "$rbenv_install_dir"
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fi
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}
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# Returns true if upstream version is up to date
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#
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# This helper should be used to avoid an upgrade of the upstream version
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# when it's not needed (but yet allowing to upgrade other parts of the
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# YunoHost application (e.g. nginx conf)
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#
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# usage: ynh_is_upstream_up_to_date (returns a boolean)
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ynh_is_upstream_up_to_date () {
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local version=$(ynh_read_manifest "/etc/yunohost/apps/$YNH_APP_INSTANCE_NAME/manifest.json" "version" || echo 1.0)
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version="${version/~ynh*/}"
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local last_version=$(ynh_read_manifest "../manifest.json" "version" || echo 1.0)
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last_version="${last_version/~ynh*/}"
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[ "$version" = "$last_version" ]
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}
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#=================================================
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# REDIS HELPERS
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#=================================================
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# get the first available redis database
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#
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# usage: ynh_redis_get_free_db
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# | returns: the database number to use
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ynh_redis_get_free_db() {
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local result max db
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result="$(redis-cli INFO keyspace)"
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# get the num
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max=$(cat /etc/redis/redis.conf | grep ^databases | grep -Eow "[0-9]+")
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db=0
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# default Debian setting is 15 databases
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for i in $(seq 0 "$max")
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do
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if ! echo "$result" | grep -q "db$i"
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then
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db=$i
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break 1
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fi
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db=-1
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done
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test "$db" -eq -1 && ynh_die --message="No available Redis databases..."
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echo "$db"
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}
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# Create a master password and set up global settings
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# Please always call this script in install and restore scripts
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#
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# usage: ynh_redis_remove_db database
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# | arg: database - the database to erase
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ynh_redis_remove_db() {
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local db=$1
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redis-cli -n "$db" flushall
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}
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