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|
# procd API:
#
# procd_open_service(name, [script]):
# Initialize a new procd command message containing a service with one or more instances
#
# procd_close_service()
# Send the command message for the service
#
# procd_open_instance([name]):
# Add an instance to the service described by the previous procd_open_service call
#
# procd_set_param(type, [value...])
# Available types:
# command: command line (array).
# env: environment variable (passed to the process)
# data: arbitrary name/value pairs for detecting config changes (table)
# file: configuration files (array)
# netdev: bound network device (detects ifindex changes)
#
# No space separation is done for arrays/tables - use one function argument per command line argument
#
# procd_close_instance():
# Complete the instance being prepared
#
# procd_kill(service, [instance]):
# Kill a service instance (or all instances)
#
. $IPKG_INSTROOT/usr/share/libubox/jshn.sh
_PROCD_SERVICE=
_procd_call() {
local old_cb
json_set_namespace procd old_cb
"$@"
json_set_namespace $old_cb
}
_procd_wrapper() {
while [ -n "$1" ]; do
eval "$1() { _procd_call _$1 \"\$@\"; }"
shift
done
}
_procd_ubus_call() {
local cmd="$1"
ubus call service "$cmd" "$(json_dump)"
json_cleanup
}
_procd_open_service() {
local name="$1"
local script="$2"
_PROCD_SERVICE="$name"
_PROCD_INSTANCE_SEQ=0
json_init
json_add_string name "$name"
[ -n "$script" ] && json_add_string script "$script"
json_add_object instances
}
_procd_close_service() {
json_close_object
_procd_ubus_call set
}
_procd_add_array_data() {
while [ -n "$1" ]; do
json_add_string "" "$1"
shift
done
}
_procd_add_array() {
json_add_array "$1"
shift
_procd_add_array_data "$@"
json_close_array
}
_procd_add_table_data() {
while [ -n "$1" ]; do
local var="${1%%=*}"
local val="${1#*=}"
[[ "$1" == "$val" ]] && val=
json_add_string "$var" "$val"
shift
done
}
_procd_add_table() {
json_add_object "$1"
shift
_procd_add_table_data "$@"
json_close_object
}
_procd_open_instance() {
local name="$1"; shift
_PROCD_INSTANCE_SEQ="$(($_PROCD_INSTANCE_SEQ + 1))"
name="${name:-instance$_PROCD_INSTANCE_SEQ}"
json_add_object "$name"
}
_procd_open_trigger() {
json_add_array "triggers"
}
_procd_set_param() {
local type="$1"; shift
case "$type" in
env|data)
_procd_add_table "$type" "$@"
;;
command|netdev|file)
_procd_add_array "$type" "$@"
;;
nice)
json_add_int "$type" "$1"
;;
esac
}
_procd_add_config_trigger() {
json_add_array
_procd_add_array_data "config.change"
json_add_array
_procd_add_array_data "if"
json_add_array
_procd_add_array_data "eq" "package" "$1"
shift
json_close_array
json_add_array
_procd_add_array_data "run_script" "$@"
json_close_array
json_close_array
json_close_array
}
_procd_append_param() {
local type="$1"; shift
json_select "$type"
case "$type" in
env|data)
_procd_add_table_data "$@"
;;
command|netdev|file)
_procd_add_array_data "$@"
;;
esac
json_select ..
}
_procd_close_instance() {
json_close_object
}
_procd_close_trigger() {
json_close_array
}
_procd_add_instance() {
_procd_open_instance
_procd_set_command "$@"
_procd_close_instance
}
_procd_kill() {
local service="$1"
local instance="$2"
json_init
[ -n "$service" ] && json_add_string service "$service"
[ -n "$instance" ] && json_add_string instance "$instance"
_procd_ubus_call delete
}
_procd_wrapper \
procd_open_service \
procd_close_service \
procd_add_instance \
procd_add_config_trigger \
procd_open_trigger \
procd_close_trigger \
procd_open_instance \
procd_close_instance \
procd_set_param \
procd_append_param \
procd_kill
|
