-
Notifications
You must be signed in to change notification settings - Fork 2.5k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
fix #638 Co-authored-by: liuheng <liuhengloveyou@gmail.com>
- Loading branch information
1 parent
7cb9563
commit c65f5c9
Showing
10 changed files
with
635 additions
and
25 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
134 changes: 134 additions & 0 deletions
134
apisix/plugins/limit-count/limit-count-redis-cluster.lua
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| -- | ||
| -- 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 rediscluster = require("resty.rediscluster") | ||
| local core = require("apisix.core") | ||
| local resty_lock = require("resty.lock") | ||
| local setmetatable = setmetatable | ||
| local tostring = tostring | ||
| local ipairs = ipairs | ||
|
|
||
| local _M = {} | ||
|
|
||
|
|
||
| local mt = { | ||
| __index = _M | ||
| } | ||
|
|
||
|
|
||
| local function new_redis_cluster(conf) | ||
| local config = { | ||
| name = "apisix-redis-cluster", | ||
| serv_list = {}, | ||
| read_timeout = conf.redis_timeout, | ||
| auth = conf.redis_password, | ||
| dict_name = "plugin-limit-count-redis-cluster-slot-lock", | ||
| } | ||
|
|
||
| for i, conf_item in ipairs(conf.redis_cluster_nodes) do | ||
| local host, port, err = core.utils.parse_addr(conf_item) | ||
| if err then | ||
| return nil, "failed to parse address: " .. conf_item | ||
| .. " err: " .. err | ||
| end | ||
|
|
||
| config.serv_list[i] = {ip = host, port = port} | ||
| end | ||
|
|
||
| local red_cli, err = rediscluster:new(config) | ||
| if not red_cli then | ||
| return nil, "failed to new redis cluster: " .. err | ||
| end | ||
|
|
||
| return red_cli | ||
| end | ||
|
|
||
|
|
||
| function _M.new(plugin_name, limit, window, conf) | ||
| local red_cli, err = new_redis_cluster(conf) | ||
| if not red_cli then | ||
| return nil, err | ||
| end | ||
|
|
||
| local self = { | ||
| limit = limit, window = window, conf = conf, | ||
| plugin_name = plugin_name, red_cli =red_cli | ||
| } | ||
|
|
||
| return setmetatable(self, mt) | ||
| end | ||
|
|
||
|
|
||
| function _M.incoming(self, key) | ||
| local red = self.red_cli | ||
| local limit = self.limit | ||
| local window = self.window | ||
| local remaining | ||
| key = self.plugin_name .. tostring(key) | ||
|
|
||
| local ret, err = red:ttl(key) | ||
| if not ret then | ||
| return false, "failed to get redis `" .. key .."` ttl: " .. err | ||
| end | ||
|
|
||
| core.log.info("ttl key: ", key, " ret: ", ret, " err: ", err) | ||
| if ret < 0 then | ||
| local lock, err = resty_lock:new("plugin-limit-count") | ||
| if not lock then | ||
| return false, "failed to create lock: " .. err | ||
| end | ||
|
|
||
| local elapsed, err = lock:lock(key) | ||
| if not elapsed then | ||
| return false, "failed to acquire the lock: " .. err | ||
| end | ||
|
|
||
| ret = red:ttl(key) | ||
| if ret < 0 then | ||
| local ok, err = lock:unlock() | ||
| if not ok then | ||
| return false, "failed to unlock: " .. err | ||
| end | ||
|
|
||
| ret, err = red:set(key, limit -1, "EX", window) | ||
| if not ret then | ||
| return nil, err | ||
| end | ||
|
|
||
| return 0, limit -1 | ||
| end | ||
|
|
||
| local ok, err = lock:unlock() | ||
| if not ok then | ||
| return false, "failed to unlock: " .. err | ||
| end | ||
| end | ||
|
|
||
| remaining, err = red:incrby(key, -1) | ||
| if not remaining then | ||
| return nil, err | ||
| end | ||
|
|
||
| if remaining < 0 then | ||
| return nil, "rejected" | ||
| end | ||
|
|
||
| return 0, remaining | ||
| end | ||
|
|
||
|
|
||
| return _M |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.