| 1 | # procd API: |
| 2 | # |
| 3 | # procd_open_service(name, [script]): |
| 4 | # Initialize a new procd command message containing a service with one or more instances |
| 5 | # |
| 6 | # procd_close_service() |
| 7 | # Send the command message for the service |
| 8 | # |
| 9 | # procd_open_instance([name]): |
| 10 | # Add an instance to the service described by the previous procd_open_service call |
| 11 | # |
| 12 | # procd_set_param(type, [value...]) |
| 13 | # Available types: |
| 14 | # command: command line (array). |
| 15 | # env: environment variable (passed to the process) |
| 16 | # data: arbitrary name/value pairs for detecting config changes (table) |
| 17 | # file: configuration files (array) |
| 18 | # netdev: bound network device (detects ifindex changes) |
| 19 | # |
| 20 | # No space separation is done for arrays/tables - use one function argument per command line argument |
| 21 | # |
| 22 | # procd_close_instance(): |
| 23 | # Complete the instance being prepared |
| 24 | # |
| 25 | # procd_kill(service, [instance]): |
| 26 | # Kill a service instance (or all instances) |
| 27 | # |
| 28 | |
| 29 | . $IPKG_INSTROOT/usr/share/libubox/jshn.sh |
| 30 | |
| 31 | _PROCD_SERVICE= |
| 32 | |
| 33 | _procd_call() { |
| 34 | local old_cb |
| 35 | |
| 36 | json_set_namespace procd old_cb |
| 37 | "$@" |
| 38 | json_set_namespace $old_cb |
| 39 | } |
| 40 | |
| 41 | _procd_wrapper() { |
| 42 | while [ -n "$1" ]; do |
| 43 | eval "$1() { _procd_call _$1 \"\$@\"; }" |
| 44 | shift |
| 45 | done |
| 46 | } |
| 47 | |
| 48 | _procd_ubus_call() { |
| 49 | local cmd="$1" |
| 50 | |
| 51 | ubus call service "$cmd" "$(json_dump)" |
| 52 | json_cleanup |
| 53 | } |
| 54 | |
| 55 | _procd_open_service() { |
| 56 | local name="$1" |
| 57 | local script="$2" |
| 58 | |
| 59 | _PROCD_SERVICE="$name" |
| 60 | _PROCD_INSTANCE_SEQ=0 |
| 61 | |
| 62 | json_init |
| 63 | json_add_string name "$name" |
| 64 | [ -n "$script" ] && json_add_string script "$script" |
| 65 | json_add_object instances |
| 66 | } |
| 67 | |
| 68 | _procd_close_service() { |
| 69 | json_close_object |
| 70 | _procd_ubus_call set |
| 71 | } |
| 72 | |
| 73 | _procd_add_array_data() { |
| 74 | while [ -n "$1" ]; do |
| 75 | json_add_string "" "$1" |
| 76 | shift |
| 77 | done |
| 78 | } |
| 79 | |
| 80 | _procd_add_array() { |
| 81 | json_add_array "$1" |
| 82 | shift |
| 83 | _procd_add_array_data "$@" |
| 84 | json_close_array |
| 85 | } |
| 86 | |
| 87 | _procd_add_table_data() { |
| 88 | while [ -n "$1" ]; do |
| 89 | local var="${1%%=*}" |
| 90 | local val="${1#*=}" |
| 91 | [[ "$1" == "$val" ]] && val= |
| 92 | json_add_string "$var" "$val" |
| 93 | shift |
| 94 | done |
| 95 | } |
| 96 | |
| 97 | _procd_add_table() { |
| 98 | json_add_object "$1" |
| 99 | shift |
| 100 | _procd_add_table_data "$@" |
| 101 | json_close_object |
| 102 | } |
| 103 | |
| 104 | _procd_open_instance() { |
| 105 | local name="$1"; shift |
| 106 | |
| 107 | _PROCD_INSTANCE_SEQ="$(($_PROCD_INSTANCE_SEQ + 1))" |
| 108 | name="${name:-instance$_PROCD_INSTANCE_SEQ}" |
| 109 | json_add_object "$name" |
| 110 | } |
| 111 | |
| 112 | _procd_set_param() { |
| 113 | local type="$1"; shift |
| 114 | |
| 115 | case "$type" in |
| 116 | env|data) |
| 117 | _procd_add_table "$type" "$@" |
| 118 | ;; |
| 119 | command|netdev|file) |
| 120 | _procd_add_array "$type" "$@" |
| 121 | ;; |
| 122 | nice) |
| 123 | json_add_int "$type" "$1" |
| 124 | ;; |
| 125 | esac |
| 126 | } |
| 127 | |
| 128 | _procd_append_param() { |
| 129 | local type="$1"; shift |
| 130 | |
| 131 | json_select "$type" |
| 132 | case "$type" in |
| 133 | env|data) |
| 134 | _procd_add_table_data "$@" |
| 135 | ;; |
| 136 | command|netdev|file) |
| 137 | _procd_add_array_data "$@" |
| 138 | ;; |
| 139 | esac |
| 140 | json_select .. |
| 141 | } |
| 142 | |
| 143 | _procd_close_instance() { |
| 144 | json_close_object |
| 145 | } |
| 146 | |
| 147 | _procd_add_instance() { |
| 148 | _procd_open_instance |
| 149 | _procd_set_command "$@" |
| 150 | _procd_close_instance |
| 151 | } |
| 152 | |
| 153 | _procd_kill() { |
| 154 | local service="$1" |
| 155 | local instance="$2" |
| 156 | |
| 157 | json_init |
| 158 | [ -n "$service" ] && json_add_string service "$service" |
| 159 | [ -n "$instance" ] && json_add_string instance "$instance" |
| 160 | _procd_ubus_call delete |
| 161 | } |
| 162 | |
| 163 | _procd_wrapper \ |
| 164 | procd_open_service \ |
| 165 | procd_close_service \ |
| 166 | procd_add_instance \ |
| 167 | procd_open_instance \ |
| 168 | procd_close_instance \ |
| 169 | procd_set_param \ |
| 170 | procd_append_param \ |
| 171 | procd_kill |
| 172 | |
