| -- |
| -- Licensed to the Apache Software Foundation (ASF) under one or more |
| -- contributor license agreements. See the NOTICE file distributed with |
| -- this work for additional information regarding copyright ownership. |
| -- The ASF licenses this file to You under the Apache License, Version 2.0 |
| -- (the "License"); you may not use this file except in compliance with |
| -- the License. You may obtain a copy of the License at |
| -- |
| -- http://www.apache.org/licenses/LICENSE-2.0 |
| -- |
| -- Unless required by applicable law or agreed to in writing, software |
| -- distributed under the License is distributed on an "AS IS" BASIS, |
| -- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| -- See the License for the specific language governing permissions and |
| -- limitations under the License. |
| -- |
| local core = require("apisix.core") |
| local process = require("ngx.process") |
| local pairs = pairs |
| local unpack = unpack |
| local thread_spawn = ngx.thread.spawn |
| local thread_wait = ngx.thread.wait |
| |
| local check_interval = 1 |
| |
| local timers = {} |
| |
| |
| local _M = {} |
| |
| |
| local function background_timer() |
| if core.table.nkeys(timers) == 0 then |
| return |
| end |
| |
| local threads = {} |
| for name, timer in pairs(timers) do |
| core.log.info("run timer[", name, "]") |
| |
| local th, err = thread_spawn(timer) |
| if not th then |
| core.log.error("failed to spawn thread for timer [", name, "]: ", err) |
| goto continue |
| end |
| |
| core.table.insert(threads, th) |
| |
| ::continue:: |
| end |
| |
| local ok = thread_wait(unpack(threads)) |
| if not ok then |
| core.log.error("failed to wait threads") |
| end |
| end |
| |
| |
| local function is_privileged() |
| return process.type() == "privileged agent" |
| end |
| |
| |
| function _M.init_worker() |
| local opts = { |
| each_ttl = 0, |
| sleep_succ = 0, |
| check_interval = check_interval, |
| } |
| local timer, err = core.timer.new("background", background_timer, opts) |
| if not timer then |
| core.log.error("failed to create background timer: ", err) |
| return |
| end |
| |
| core.log.notice("succeed to create background timer") |
| end |
| |
| |
| function _M.register_timer(name, f, privileged) |
| if privileged and not is_privileged() then |
| return |
| end |
| |
| timers[name] = f |
| end |
| |
| |
| function _M.unregister_timer(name, privileged) |
| if privileged and not is_privileged() then |
| return |
| end |
| |
| timers[name] = nil |
| end |
| |
| |
| function _M.check_interval() |
| return check_interval |
| end |
| |
| |
| return _M |