nix-processmgmt/tools/generate-config/nixproc-generate-config.in

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#!/bin/bash -e
# Shows the usage of this command to the user
showUsage()
{
me="$(basename "$0")"
cat <<EOF
Usage: $me [OPTION] -P MANAGER PATH
Takes a JSON representation of a managed process configuration and translates
it to a process manager specific configuration.
Options:
-P, --process-manager=MANAGER
Process manager to build for
--create-managed-process-expr
Nix expression that composes a function that accepts the
parameters in the JSON configuration and translates it
to a process manager-specific configuration.
If no expression is provided, it will use the universal
translation function in the framework
--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
--no-out-link Do not create a symlink to the output path
--show-trace Shows a trace of the output
-h, --help Shows the usage of this command
Environment:
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 $0 -o P:h -l process-manager:,create-managed-process-expr:,state-dir:,runtime-dir:,log-dir:,tmp-dir:,cache-dir:,spool-dir:,lock-dir:,lib-dir:,force-disable-user-change,no-out-link,show-trace,help -- "$@"`
if [ $? != 0 ]
then
showUsage
exit 1
fi
# Evaluate valid options
eval set -- "$PARAMS"
while [ "$1" != "--" ]
do
case "$1" in
-P|--process-manager)
processManager="$2"
;;
create-managed-process-expr)
createManagedProcessExpr="$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="--arg forceDisableUserChange true"
;;
--no-out-link)
noOutLinkArg="--no-out-link"
;;
--show-trace)
showTraceArg="--show-trace"
;;
-h|--help)
showUsage
exit 0
;;
esac
shift
done
shift
configFile="$1"
# Validate the given options
if [ "$configFile" = "" ]
then
echo "A config file must be provided!" >&2
exit 1
fi
if [ "$processManager" = "" ]
then
echo "No process manager was specified!" >&2
exit 1
fi
NIXPROC=${NIXPROC:-@NIXPROC@}
createManagedProcessExpr="${createManagedProcessExpr:-$NIXPROC/create-managed-process/universal/create-managed-process-universal.nix}"
# Build the configuration
nix-build $NIXPROC/create-managed-process/agnostic/create-managed-process-from-config.nix --arg configFile $configFile --arg createManagedProcessExpr "$createManagedProcessExpr" --argstr processManager $processManager $stateDirArg $runtimeDirArg $logDirArg $tmpDirArg $cacheDirArg $spoolDirArg $lockDirArg $libDirArg $forceDisableUserChangeArg $noOutLinkArg $showTraceArg