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functions.sh : declare checks and ensure

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Gitouche 2021-05-18 22:30:49 +02:00
parent 6e31334d74
commit 4fe1c5b94e
1 changed files with 110 additions and 13 deletions
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123
functions.sh
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@ -2,20 +2,32 @@
SCRIPTNAME="$( basename -- "$0" )" SCRIPTNAME="$( basename -- "$0" )"
# check : current user is root?
check_root () {
[[ $EUID -eq 0 ]]
}
# ok if root
ensure_root () { ensure_root () {
if [[ $EUID -ne 0 ]]; then if ! check_root; then
echo "This script must be run as root" echo "ERROR : This script must be run as root"
exit 1 exit 1
fi else
return 0
fi
} }
# ok if non root
ensure_not_root () { ensure_not_root () {
if [[ $EUID -eq 0 ]]; then if check_root; then
echo "This script must not be run as root" echo "ERROR : This script must not be *run* as root"
exit 1 exit 1
fi else
return 0
fi
} }
# ok if running script from current directory
ensure_pwd_is_scriptdir () { ensure_pwd_is_scriptdir () {
if [[ $PWD != $ABSDIR ]]; then if [[ $PWD != $ABSDIR ]]; then
echo "Please cd in the script directory before running it :" echo "Please cd in the script directory before running it :"
@ -25,22 +37,107 @@ ensure_pwd_is_scriptdir () {
fi fi
} }
# make sure systemd directory exists
ensure_systemd_as_user_dir_exists () { ensure_systemd_as_user_dir_exists () {
mkdir -p ${HOME}/.config/systemd/user/ [[ -d ${HOME}/.config/systemd/user/ ]] || mkdir -p ${HOME}/.config/systemd/user/
} }
# check: systemd unit exists
check_systemd_unit_exists () { check_systemd_unit_exists () {
systemctl --user cat -- ${1} &> /dev/null systemctl --user cat -- ${1} &> /dev/null
} }
# ok if systemd unit file {1} exists
ensure_systemd_unit_exists () {
if ! check_systemd_unit_exists ${1}; then
echo "ERROR : systemd unit ${1} does not exists!"
exit 1
else
return 0
fi
}
# ok if systemd unit file {1} does not exists
ensure_systemd_unit_not_exists () {
if check_systemd_unit_exists ${1}; then
echo "ERROR : systemd unit ${1} already exists!"
exit 1
else
return 0
fi
}
# check: systemd unit running
check_systemd_unit_running () { check_systemd_unit_running () {
systemctl --user is-active --quiet service ${1} systemctl --user is-active --quiet service ${1}
} }
check_container_exists () { # ok if systemd unit {1} is running
podman container exists ${1} ensure_systemd_unit_running () {
if ! check_systemd_unit_running ${1}; then
echo "ERROR : systemd unit ${1} is not running!"
exit 1
else
return 0
fi
} }
check_container_running () { # ok if systemd unit {1} is NOT running
[[ "podman container inspect -f '{{.State.Status}}' ${1}" != "running" ]] ensure_systemd_unit_not_running () {
if check_systemd_unit_running ${1}; then
echo "ERROR : systemd unit ${1} is running!"
exit 1
else
return 0
fi
}
# check: container $1 exists?
check_container_exists () {
podman container exists ${1}
}
# ok if container exists
ensure_container_exists () {
if ! check_container_exists ${1}; then
echo "ERROR : container ${1} does not exists"
exit 1
else
return 0
fi
}
# ok if container does not exists
ensure_container_not_exists () {
if check_container_exists ${1}; then
echo "ERROR : container ${1} already exists"
exit 1
else
return 0
fi
}
# check: container ${1} is running?
check_container_running () {
[[ "podman container inspect -f '{{.State.Status}}' ${1}" == "running" ]]
}
# ok if container exists
ensure_container_running () {
if ! check_container_running ${1}; then
echo "ERROR : container ${1} is not running"
exit 1
else
return 0
fi
}
# ok if container does not exists
ensure_container_not_running () {
if check_container_running ${1}; then
echo "ERROR : container ${1} is running"
exit 1
else
return 0
fi
} }