diff options
author | 2016-08-25 10:17:35 +0800 | |
---|---|---|
committer | 2016-08-25 10:24:54 +0800 | |
commit | 8597cf5e116012c038e83f763a816ca106cad4d2 (patch) | |
tree | 4f6671079047db1f565060dcce4bf2607856cf68 /msb-core/openresty-ext/src/assembly/resources/openresty/nginx/luaext/loadbalance/policy | |
parent | eb9df7aa9e268192dd68a46af4576671b17adcf9 (diff) |
Solve api gateway issue
Change-Id: I88fedc04faaf4d799b9dbf4c306aa073cabd6218
Signed-off-by: HuabingZhao <zhao.huabing@zte.com.cn>
Diffstat (limited to 'msb-core/openresty-ext/src/assembly/resources/openresty/nginx/luaext/loadbalance/policy')
-rw-r--r-- | msb-core/openresty-ext/src/assembly/resources/openresty/nginx/luaext/loadbalance/policy/roundrobin.lua | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/msb-core/openresty-ext/src/assembly/resources/openresty/nginx/luaext/loadbalance/policy/roundrobin.lua b/msb-core/openresty-ext/src/assembly/resources/openresty/nginx/luaext/loadbalance/policy/roundrobin.lua deleted file mode 100644 index 986d04e..0000000 --- a/msb-core/openresty-ext/src/assembly/resources/openresty/nginx/luaext/loadbalance/policy/roundrobin.lua +++ /dev/null @@ -1,60 +0,0 @@ ---[[
-
- Copyright (C) 2016 ZTE, Inc. and others. All rights reserved. (ZTE)
-
- Licensed 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 _M = {}
-_M._VERSION = '1.0.0'
-
-local tbl_util = require('lib.utils.table_util')
-local tbl_isempty = tbl_util.isempty
-
-function _M.get_backserver(servers,svckey)
- if tbl_isempty(servers) then return nil,"input server list is empty" end
-
- local length = #servers
- if length==1 then
- -- return it directly if there is only one server
- return servers[1],nil
- end
-
- local resty_lock = require "resty.lock"
- local roundrobin_cache = ngx.shared.rr_cache
-
- --step1:acquire lock
- local opts = {["timeout"] = 0.002,["exptime"] = 0.05}--this can be set using the conf file
- local rrlock = resty_lock:new("rr_locks",opts)
- local elapsed, err = rrlock:lock(svckey)
- if not elapsed then
- --return fail("failed to acquire the lock: ", err)
- end
- --step2:lock successfully acquired!incr the index
- local index, err = roundrobin_cache:get(svckey)
- if not index then
- index = 0
- end
- index = index%length+1
-
- --step3:update the shm cache with the new index
- roundrobin_cache:set(svckey,index)
-
- --step4:release the lock
- local ok, err = rrlock:unlock()
-
- return servers[index],nil
-end
-
-return _M
\ No newline at end of file |