nix-processmgmt/tools/supervisord/nixproc-supervisord-deploy.in

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#!/bin/bash
set -e
shopt -s nullglob
showUsage()
{
me="$(basename "$0")"
cat <<EOF
Usage: $me [OPTION] PATH
Deploys a prebuilt systemd configuration profile.
Options:
-p, --profile=NAME Name of the Nix profile that stores the sysvinit scripts
(defaults to: processes)
-o, --old-profile=PATH
Path to the previously deployed Nix profile (by default,
it gets auto detected)
--state-dir Changes the directory in which the state of the
processes are stored
--runtime-dir Changes the directory in which the PID files are stored
--log-dir Changes the directory in which the log files are stored
--tmp-dir Changes the directory in which temp files are stored
--cache-dir Changes the directory in which cache files are stored
--spool-dir Changes the directory in which spool files are stored
--lock-dir Changes the directory in which lock files are stored
--lib-dir Changes the directory in which state files are stored
--force-disable-user-change
Forces to not create users, groups or change user
permissions
-h, --help Shows the usage of this command
Environment:
NIX_STATE_DIR Overrides the location of the Nix state directory
SUPERVISORD_CONF_DIR Directory if which the supervisord.conf resides
NIXPROC_STATE_DIR Changes the directory in which the state of the
processes is stored
NIXPROC_RUNTIME_DIR Changes the directory in which the PID files are stored
NIXPROC_LOG_DIR Changes the directory in which log files are stored
NIXPROC_TMP_DIR Changes the directory in which temp files are stored
NIXPROC_CACHE_DIR Changes the directory in which cache files are stored
NIXPROC_SPOOL_DIR Changes the directory in which spool files are stored
NIXPROC_LOCK_DIR Changes the directory in which lock files are stored
NIXPROC_LIB_DIR Changes the directory in which state files are stored
NIXPROC_FORCE_DISABLE_USER_CHANGE
Forces to not create users, groups or change user
permissions
EOF
}
# Parse valid argument options
PARAMS=`@getopt@ -n $0 -o p:o:h -l undeploy,profile:,old-profile:,state-dir:,runtime-dir:,log-dir:,tmp-dir:,cache-dir:,spool-dir:,lock-dir:,lib-dir:,force-disable-user-change,show-trace,extra-params:,help -- "$@"`
if [ $? != 0 ]
then
showUsage
exit 1
fi
# Evaluate valid options
eval set -- "$PARAMS"
while [ "$1" != "--" ]
do
case "$1" in
-p|--profile)
profile="$2"
;;
-o|--old-profile)
oldProfilePath="$2"
;;
--state-dir)
stateDirArg="--state-dir $2"
;;
--runtime-dir)
runtimeDirArg="--runtime-dir $2"
;;
--log-dir)
logDirArg="--log-dir $2"
;;
--tmp-dir)
tmpDirArg="--tmp-dir $2"
;;
--cache-dir)
cacheDirArg="--cache-dir $2"
;;
--spool-dir)
spoolDirArg="--spool-dir $2"
;;
--lock-dir)
lockDirArg="--lock-dir $2"
;;
--lib-dir)
libDirArg="--lib-dir $2"
;;
--force-disable-user-change)
forceDisableUserChangeArg="--force-disable-user-change"
;;
-h|--help)
showUsage
exit 0
;;
esac
shift
done
shift
profilePath="$1"
# Validate the given options
source @commonchecks@
checkNixStateDir
checkProfile
composeOldProfilePath
source @supervisordchecks@
checkSupervisordConfDir
# Initialize all state
nixproc-init-state $stateDirArg $runtimeDirArg $logDirArg $tmpDirArg $cacheDirArg $spoolDirArg $lockDirArg $libDirArg $forceDisableUserChangeArg
# Determine paths of old units
oldunits=()
if [ -d "$oldProfilePath" ]
then
for i in $oldProfilePath/conf.d/*.conf
do
currentPath=$(@readlink@ -f "$i")
oldunits+=($currentPath)
done
fi
# Determine paths of new units
newunits=()
for i in $profilePath/conf.d/*.conf
do
currentPath=$(@readlink@ -f "$i")
newunits+=($currentPath)
done
if [ -d "$oldProfilePath" ]
then
# Remove obsolete units
for i in $oldProfilePath/conf.d/*.conf
do
if ! containsElement "$(@readlink@ -f "$i")" "${newunits[@]}"
then
unitTargetPath="$SUPERVISORD_CONF_DIR/conf.d/$(basename "$i")"
rm -f "$unitTargetPath"
fi
done
fi
# Add new units
for i in $profilePath/conf.d/*.conf
do
if ! containsElement "$(@readlink@ -f "$i")" "${oldunits[@]}"
then
ln -sfn "$(@readlink@ -f "$i")" $SUPERVISORD_CONF_DIR/conf.d/$(basename "$i")
fi
done
# Create new groups and users
createNewGroups
createNewUsers
# Reload and update the supervisord configuration
supervisorctl reread
supervisorctl update
# Delete obsolete users and groups
deleteObsoleteUsers
deleteObsoleteGroups
# Set new profile
setNixProfile