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nodejs
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nodejs
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#!/bin/bash
n_install_dir="/opt/node_n"
node_version_path="$n_install_dir/n/versions/node"
# N_PREFIX is the directory of n, it needs to be loaded as a environment variable.
export N_PREFIX="$n_install_dir"
# Load the version of node for an app, and set variables.
#
# usage: ynh_use_nodejs
#
# `ynh_use_nodejs` has to be used in any app scripts before using node for the first time.
# This helper will provide alias and variables to use in your scripts.
#
# To use npm or node, use the alias `ynh_npm` and `ynh_node`.
#
# Those alias will use the correct version installed for the app.
# For example: use `ynh_npm install` instead of `npm install`
#
# With `sudo` or `ynh_exec_as`, use instead the fallback variables `$ynh_npm` and `$ynh_node`
# And propagate $PATH to sudo with $ynh_node_load_PATH
# Exemple: `ynh_exec_as $app $ynh_node_load_PATH $ynh_npm install`
#
# $PATH contains the path of the requested version of node.
# However, $PATH is duplicated into $node_PATH to outlast any manipulation of `$PATH`
# You can use the variable `$ynh_node_load_PATH` to quickly load your node version
# in $PATH for an usage into a separate script.
# Exemple: $ynh_node_load_PATH $final_path/script_that_use_npm.sh`
#
#
# Finally, to start a nodejs service with the correct version, 2 solutions
# Either the app is dependent of node or npm, but does not called it directly.
# In such situation, you need to load PATH :
# ```
# Environment="__NODE_ENV_PATH__"
# ExecStart=__FINALPATH__/my_app
# ```
# You will replace __NODE_ENV_PATH__ with $ynh_node_load_PATH.
#
# Or node start the app directly, then you don't need to load the PATH variable
# ```
# ExecStart=__YNH_NODE__ my_app run
# ```
# You will replace __YNH_NODE__ with $ynh_node
#
#
# 2 other variables are also available
# - $nodejs_path: The absolute path to node binaries for the chosen version.
# - $nodejs_version: Just the version number of node for this app. Stored as 'nodejs_version' in settings.yml.
#
# Requires YunoHost version 2.7.12 or higher.
ynh_use_nodejs() {
nodejs_version=$(ynh_app_setting_get --app=$app --key=nodejs_version)
# Get the absolute path of this version of node
nodejs_path="$node_version_path/$nodejs_version/bin"
# Allow alias to be used into bash script
shopt -s expand_aliases
# Create an alias for the specific version of node and a variable as fallback
ynh_node="$nodejs_path/node"
alias ynh_node="$ynh_node"
# And npm
ynh_npm="$nodejs_path/npm"
alias ynh_npm="$ynh_npm"
# Load the path of this version of node in $PATH
if [[ :$PATH: != *":$nodejs_path"* ]]; then
PATH="$nodejs_path:$PATH"
fi
node_PATH="$PATH"
# Create an alias to easily load the PATH
ynh_node_load_PATH="PATH=$node_PATH"
# Same var but in lower case to be compatible with ynh_replace_vars...
ynh_node_load_path="PATH=$node_PATH"
}
# Install a specific version of nodejs
#
# ynh_install_nodejs will install the version of node provided as argument by using n.
#
# usage: ynh_install_nodejs --nodejs_version=nodejs_version
# | arg: -n, --nodejs_version= - Version of node to install. When possible, your should prefer to use major version number (e.g. 8 instead of 8.10.0). The crontab will then handle the update of minor versions when needed.
#
# `n` (Node version management) uses the `PATH` variable to store the path of the version of node it is going to use.
# That's how it changes the version
#
# Refer to `ynh_use_nodejs` for more information about available commands and variables
#
# Requires YunoHost version 2.7.12 or higher.
ynh_install_nodejs() {
# Use n, https://github.com/tj/n to manage the nodejs versions
# Declare an array to define the options of this helper.
local legacy_args=n
local -A args_array=([n]=nodejs_version=)
local nodejs_version
# Manage arguments with getopts
ynh_handle_getopts_args "$@"
# Create $n_install_dir
mkdir --parents "$n_install_dir"
# Load n path in PATH
CLEAR_PATH="$n_install_dir/bin:$PATH"
# Remove /usr/local/bin in PATH in case of node prior installation
PATH=$(echo $CLEAR_PATH | sed 's@/usr/local/bin:@@')
# Move an existing node binary, to avoid to block n.
test -x /usr/bin/node && mv /usr/bin/node /usr/bin/node_n
test -x /usr/bin/npm && mv /usr/bin/npm /usr/bin/npm_n
# Install (or update if YunoHost vendor/ folder updated since last install) n
mkdir -p $n_install_dir/bin/
cp /usr/share/yunohost/helpers.d/vendor/n/n $n_install_dir/bin/n
# Tweak for n to understand it's installed in $N_PREFIX
ynh_replace_string --match_string="^N_PREFIX=\${N_PREFIX-.*}$" --replace_string="N_PREFIX=\${N_PREFIX-$N_PREFIX}" --target_file="$n_install_dir/bin/n"
# Restore /usr/local/bin in PATH
PATH=$CLEAR_PATH
# And replace the old node binary.
test -x /usr/bin/node_n && mv /usr/bin/node_n /usr/bin/node
test -x /usr/bin/npm_n && mv /usr/bin/npm_n /usr/bin/npm
# Install the requested version of nodejs
uname=$(uname --machine)
if [[ $uname =~ aarch64 || $uname =~ arm64 ]]; then
n $nodejs_version --arch=arm64
else
n $nodejs_version
fi
# Find the last "real" version for this major version of node.
real_nodejs_version=$(find $node_version_path/$nodejs_version* -maxdepth 0 | sort --version-sort | tail --lines=1)
real_nodejs_version=$(basename $real_nodejs_version)
# Create a symbolic link for this major version if the file doesn't already exist
if [ ! -e "$node_version_path/$nodejs_version" ]; then
ln --symbolic --force --no-target-directory $node_version_path/$real_nodejs_version $node_version_path/$nodejs_version
fi
# Store the ID of this app and the version of node requested for it
echo "$YNH_APP_INSTANCE_NAME:$nodejs_version" | tee --append "$n_install_dir/ynh_app_version"
# Store nodejs_version into the config of this app
ynh_app_setting_set --app=$app --key=nodejs_version --value=$nodejs_version
# Build the update script and set the cronjob
ynh_cron_upgrade_node
ynh_use_nodejs
}
# Remove the version of node used by the app.
#
# usage: ynh_remove_nodejs
#
# This helper will check if another app uses the same version of node.
# - If not, this version of node will be removed.
# - If no other app uses node, n will be also removed.
#
# Requires YunoHost version 2.7.12 or higher.
ynh_remove_nodejs() {
nodejs_version=$(ynh_app_setting_get --app=$app --key=nodejs_version)
# Remove the line for this app
sed --in-place "/$YNH_APP_INSTANCE_NAME:$nodejs_version/d" "$n_install_dir/ynh_app_version"
# If no other app uses this version of nodejs, remove it.
if ! grep --quiet "$nodejs_version" "$n_install_dir/ynh_app_version"; then
$n_install_dir/bin/n rm $nodejs_version
fi
# If no other app uses n, remove n
if [ ! -s "$n_install_dir/ynh_app_version" ]; then
ynh_secure_remove --file="$n_install_dir"
ynh_secure_remove --file="/usr/local/n"
sed --in-place "/N_PREFIX/d" /root/.bashrc
rm --force /etc/cron.daily/node_update
fi
}
# Set a cron design to update your node versions
#
# [internal]
#
# This cron will check and update all minor node versions used by your apps.
#
# usage: ynh_cron_upgrade_node
#
# Requires YunoHost version 2.7.12 or higher.
ynh_cron_upgrade_node() {
# Build the update script
cat >"$n_install_dir/node_update.sh" <<EOF
#!/bin/bash
version_path="$node_version_path"
n_install_dir="$n_install_dir"
# Log the date
date
# List all real installed version of node
all_real_version="\$(find \$version_path/* -maxdepth 0 -type d | sed "s@\$version_path/@@g")"
# Keep only the major version number of each line
all_real_version=\$(echo "\$all_real_version" | sed 's/\..*\$//')
# Remove double entries
all_real_version=\$(echo "\$all_real_version" | sort --unique)
# Read each major version
while read version
do
echo "Update of the version \$version"
sudo \$n_install_dir/bin/n \$version
# Find the last "real" version for this major version of node.
real_nodejs_version=\$(find \$version_path/\$version* -maxdepth 0 | sort --version-sort | tail --lines=1)
real_nodejs_version=\$(basename \$real_nodejs_version)
# Update the symbolic link for this version
sudo ln --symbolic --force --no-target-directory \$version_path/\$real_nodejs_version \$version_path/\$version
done <<< "\$(echo "\$all_real_version")"
EOF
chmod +x "$n_install_dir/node_update.sh"
# Build the cronjob
cat >"/etc/cron.daily/node_update" <<EOF
#!/bin/bash
$n_install_dir/node_update.sh >> $n_install_dir/node_update.log
EOF
chmod +x "/etc/cron.daily/node_update"
}