| -- |
| -- 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 ngx = ngx |
| local re_gmatch = ngx.re.gmatch |
| local ngx_capture = ngx.location.capture |
| local plugin_name = "node-status" |
| local apisix_id = core.id.get() |
| local ipairs = ipairs |
| |
| |
| local schema = { |
| type = "object", |
| additionalProperties = false, |
| } |
| |
| |
| local _M = { |
| version = 0.1, |
| priority = 1000, |
| name = plugin_name, |
| schema = schema, |
| } |
| |
| |
| local ngx_status = {} |
| local ngx_status_items = { |
| "active", "accepted", "handled", "total", |
| "reading", "writing", "waiting" |
| } |
| |
| |
| local function collect() |
| local res = ngx_capture("/apisix/nginx_status") |
| if res.status ~= 200 then |
| return res.status |
| end |
| |
| -- Active connections: 2 |
| -- server accepts handled requests |
| -- 26 26 84 |
| -- Reading: 0 Writing: 1 Waiting: 1 |
| |
| local iterator, err = re_gmatch(res.body, [[(\d+)]], "jmo") |
| if not iterator then |
| return 500, "failed to re.gmatch Nginx status: " .. err |
| end |
| |
| core.table.clear(ngx_status) |
| for _, name in ipairs(ngx_status_items) do |
| local val = iterator() |
| if not val then |
| break |
| end |
| |
| ngx_status[name] = val[0] |
| end |
| |
| return 200, core.json.encode({id = apisix_id, status = ngx_status}) |
| end |
| |
| |
| function _M.check_schema(conf) |
| local ok, err = core.schema.check(schema, conf) |
| if not ok then |
| return false, err |
| end |
| |
| return true |
| end |
| |
| |
| function _M.api() |
| return { |
| { |
| methods = {"GET"}, |
| uri = "/apisix/status", |
| handler = collect, |
| } |
| } |
| end |
| |
| |
| return _M |