spacewander commented on a change in pull request #3820: URL: https://github.com/apache/apisix/pull/3820#discussion_r603173738
########## File path: apisix/discovery/nacos.lua ########## @@ -0,0 +1,324 @@ +-- +-- 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 local_conf = require("apisix.core.config_local").local_conf() +local http = require("resty.http") +local core = require("apisix.core") +local ipairs = ipairs +local tostring = tostring +local type = type +local math = math +local math_random = math.random +local error = error +local ngx = ngx +local ngx_re = require("ngx.re") +local ngx_timer_at = ngx.timer.at +local ngx_timer_every = ngx.timer.every +local string = string +local table = table +local string_sub = string.sub +local str_byte = string.byte +local str_find = core.string.find +local str_format = string.format +local log = core.log + +local default_weight +local applications +local auth_path +local service_list_path +local page_size +local instance_list_path + +local schema = { + type = "object", + properties = { + host = { + type = "array", + minItems = 1, + items = { + type = "string", + }, + }, + fetch_interval = {type = "integer", minimum = 1, default = 30}, + prefix = {type = "string", default = "/nacos/v1/"}, + page_size = {type = "integer", minimum = 1, default = 100}, + weight = {type = "integer", minimum = 1, default = 100}, + timeout = { + type = "object", + properties = { + connect = {type = "integer", minimum = 1, default = 2000}, + send = {type = "integer", minimum = 1, default = 2000}, + read = {type = "integer", minimum = 1, default = 5000}, + }, + default = { + connect = 2000, + send = 2000, + read = 5000, + } + }, + }, + required = {"host"} +} + + +local _M = { + version = 0.1, +} + + +local function service_info() + local host = local_conf.discovery and + local_conf.discovery.nacos and local_conf.discovery.nacos.host + if not host then + log.error("do not set nacos.host") + return + end + + local username, password + -- TODO Add health check to get healthy nodes. + local url = host[math_random(#host)] + local auth_idx = str_find(url, "#") + if auth_idx then + local protocol_idx = str_find(url, "://") + local protocol = string_sub(url, 1, protocol_idx + 2) + local user_and_password = string_sub(url, protocol_idx + 3, auth_idx - 1) + local arr = ngx_re.split(user_and_password, ":") + if #arr == 2 then + username = arr[1] + password = arr[2] + end + local other = string_sub(url, auth_idx + 1) + url = protocol .. other + end + if local_conf.discovery.nacos.prefix then + url = url .. local_conf.discovery.nacos.prefix + end + if str_byte(url, #url) ~= str_byte("/") then + url = url .. "/" + end + + return url, username, password +end + + +local function request(request_uri, path, body, method, basic_auth) + local url = request_uri .. path + log.info("request url:", url) + local headers = core.table.new(0, 0) + headers['Connection'] = 'Keep-Alive' + headers['Accept'] = 'application/json' + + if basic_auth then + headers['Authorization'] = basic_auth + end + + if body and 'table' == type(body) then + local err + body, err = core.json.encode(body) + if not body then + return nil, 'invalid body : ' .. err + end + -- log.warn(method, url, body) + headers['Content-Type'] = 'application/json' + end + + local httpc = http.new() + local timeout = local_conf.discovery.nacos.timeout + local connect_timeout = timeout.connect + local send_timeout = timeout.send + local read_timeout = timeout.read + log.info("connect_timeout:", connect_timeout, ", send_timeout:", send_timeout, + ", read_timeout:", read_timeout, ".") + httpc:set_timeouts(connect_timeout, send_timeout, read_timeout) + local res, err = httpc:request_uri(url, { + method = method, + headers = headers, + body = body, + ssl_verify = false, + }) + if not res then + return nil, err + end + + if not res.body or res.status ~= 200 then + return nil, "status = " .. res.status + end + + local json_str = res.body + local data, err = core.json.decode(json_str) + if not data then + return nil, err + end + return data +end + + +local function get_url(request_uri, path) + return request(request_uri, path, nil, "GET", nil) +end + + +local function post_url(request_uri, path, body) + return request(request_uri, path, body, "POST", nil) +end + + + +local function get_page_service(infos, base_uri, token_param, page_num) + local path = str_format(service_list_path, page_num, page_size) .. token_param + local data, err = get_url(base_uri, path) + if err then + return data, err, path + end + + for _, service_name in ipairs(data.doms) do + core.table.insert(infos, service_name) + end + return data, err, path +end + + +local function iter_and_add_service_info(infos, base_uri, token_param) Review comment: You can take a look at https://github.com/apache/apisix/blob/49e4fd307c65dc125e62987b3634a9e7358179bf/apisix/control/v1.lua#L115-L122 for how we iterate the upstream configurations and collect the health check info. It is similar to collect the service_name. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
