feat: 新增 8 个语言客户端 SDK
- PHP 客户端 (kenaito-conf-php-client) - .NET 客户端 (kenaito-conf-dotnet-client) - C 客户端 (kenaito-conf-c-client) - C++ 客户端 (kenaito-conf-cpp-client) - Lua 客户端 (kenaito-conf-lua-client) - Kotlin 客户端 (kenaito-conf-kotlin-client) - Rust 客户端 (kenaito-conf-rust-client) - Ruby 客户端 (kenaito-conf-ruby-client) 每个客户端包含完整的 SDK 实现和 demo 示例，支持： - 配置拉取（全量/增量） - AES-128-CBC 解密 - 本地缓存 - 变更回调 - Token 认证 更新根目录 README.md： - 技术栈列表新增 8 种语言 - 项目结构新增 16 个目录 - 客户端接入章节新增 8 个使用示例
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# frozen_string_literal: true
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require 'net/http'
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require 'json'
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require 'openssl'
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require 'base64'
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module KenaitoConf
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class Config
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attr_accessor :base_url, :app_name, :env, :version, :token, :sync_interval, :ignore_global, :cache_dir
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def initialize(options = {})
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@base_url = options[:base_url] || ''
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@app_name = options[:app_name] || ''
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@env = options[:env] || 'dev'
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@version = options[:version] || 'latest'
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@token = options[:token] || ''
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@sync_interval = options[:sync_interval] || 60
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@ignore_global = options[:ignore_global] || false
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@cache_dir = options[:cache_dir] || '.'
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end
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end
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module Crypto
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CRYPT_PREFIX = '{Cipher}'
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def self.decrypt_config(secret, data)
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return data unless data.start_with?(CRYPT_PREFIX)
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encrypted = data[CRYPT_PREFIX.length..]
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decrypt_with_aes(secret, encrypted)
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end
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def self.decrypt_with_aes(key, data)
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md5_hash = OpenSSL::Digest::MD5.hexdigest(key)
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aes_key = md5_hash[16..]
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cipher_text = Base64.decode64(data)
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iv = "\0" * 16
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cipher = OpenSSL::Cipher::AES128.new(:CBC)
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cipher.decrypt
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cipher.key = aes_key
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cipher.iv = iv
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cipher.padding = 0
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plain_text = cipher.update(cipher_text) + cipher.final
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padding = plain_text[-1].ord
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plain_text[0...-padding]
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end
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end
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class Cache
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CACHE_FILE = 'config-cache.json'
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def initialize(cache_dir = '.')
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@cache_dir = cache_dir
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end
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def write(data)
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File.write(File.join(@cache_dir, CACHE_FILE), JSON.pretty_generate(data))
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end
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def read
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path = File.join(@cache_dir, CACHE_FILE)
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return nil unless File.exist?(path)
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JSON.parse(File.read(path))
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rescue StandardError
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nil
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end
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end
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class ConfigClient
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def initialize(config)
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@config = config
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@cache = Cache.new(config.cache_dir)
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@configs = {}
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@secret = ''
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@global_secret = ''
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@last_time = 0
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@handlers = []
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@started = false
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end
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def on_change(&handler)
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@handlers << handler
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end
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def get(key)
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@configs[key]
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end
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def get_all
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@configs.dup
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end
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def start
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return if @started
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@started = true
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begin
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fetch_all
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rescue StandardError => e
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warn "[ConfigClient] fetch all configs error: #{e.message}, trying cache"
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cached = @cache.read
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if cached
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apply_configs(cached)
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warn "[ConfigClient] loaded #{@configs.size} configs from cache"
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else
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raise "fetch configs failed and no cache: #{e.message}"
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end
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end
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Thread.new do
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loop do
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sleep @config.sync_interval
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begin
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fetch_changed
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rescue StandardError => e
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warn "[ConfigClient] sync error: #{e.message}"
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end
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end
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end
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end
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def stop
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@started = false
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end
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private
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def fetch_all
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uri = URI("#{@config.base_url}/api/fetchAllConfigs")
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http = Net::HTTP.new(uri.host, uri.port)
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http.read_timeout = 10
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request = Net::HTTP::Post.new(uri.path, 'Content-Type' => 'application/json')
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request.body = JSON.generate({
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appName: @config.app_name,
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env: @config.env,
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version: @config.version,
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ignoreGlobal: @config.ignore_global,
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token: @config.token
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})
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response = http.request(request)
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raise "HTTP #{response.code}" unless response.code == '200'
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data = JSON.parse(response.body)
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raise "server error: #{data['msg']}" if data['code'] && data['code'] != 0
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@secret = data['kenaito.config.encrypt-secret'] if data['kenaito.config.encrypt-secret']
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@global_secret = data['kenaito.config.global-encrypt-secret'] if data['kenaito.config.global-encrypt-secret']
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@last_time = data['latest.fetch.timestamp'].to_i if data['latest.fetch.timestamp']
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@cache.write(data)
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apply_configs(data)
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warn "[ConfigClient] fetched #{@configs.size} configs"
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end
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def fetch_changed
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uri = URI("#{@config.base_url}/api/fetchChangedConfigs")
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http = Net::HTTP.new(uri.host, uri.port)
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http.read_timeout = 10
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request = Net::HTTP::Post.new(uri.path, 'Content-Type' => 'application/json')
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request.body = JSON.generate({
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appName: @config.app_name,
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env: @config.env,
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version: @config.version,
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lastTime: @last_time,
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ignoreGlobal: @config.ignore_global,
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token: @config.token
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})
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response = http.request(request)
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result = JSON.parse(response.body)
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raise "server error" if !result['code'] || result['code'] != 0
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changed_data = result['data'] || {}
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@last_time = changed_data.delete('latest.fetch.timestamp').to_i if changed_data['latest.fetch.timestamp']
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changed = {}
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changed_data.each do |k, v|
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changed[k] = try_decrypt(v)
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end
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@configs.merge!(changed)
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@handlers.each { |h| h.call(changed) rescue warn "[ConfigClient] handler error: #{$!.message}" }
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end
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def apply_configs(data)
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data.each do |k, v|
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next if k.start_with?('kenaito.') || k == 'latest.fetch.timestamp'
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next unless v.is_a?(String)
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@configs[k] = try_decrypt(v)
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end
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end
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def try_decrypt(value)
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decrypted = Crypto.decrypt_config(@secret, value)
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decrypted = Crypto.decrypt_config(@global_secret, value) if decrypted == value && !@global_secret.empty?
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decrypted
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end
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end
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end
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