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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use aes::cipher::{block_padding::NoPadding, BlockDecryptMut, KeyIvInit};
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use md5::{Digest, Md5};
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use serde::{Deserialize, Serialize};
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use std::collections::HashMap;
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use std::sync::{Arc, Mutex};
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use std::time::Duration;
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type Aes128CbcDec = cbc::Decryptor<aes::Aes128>;
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#[derive(Clone, Debug)]
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pub struct Config {
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pub base_url: String,
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pub app_name: String,
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pub env: String,
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pub version: String,
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pub token: String,
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pub sync_interval: u64,
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pub ignore_global: bool,
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pub cache_dir: String,
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}
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impl Default for Config {
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fn default() -> Self {
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Self {
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base_url: String::new(),
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app_name: String::new(),
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env: "dev".to_string(),
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version: "latest".to_string(),
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token: String::new(),
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sync_interval: 60,
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ignore_global: false,
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cache_dir: ".".to_string(),
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}
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}
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}
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#[derive(Serialize, Deserialize, Debug)]
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struct FetchAllRequest {
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app_name: String,
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env: String,
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version: String,
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ignore_global: bool,
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token: String,
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}
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#[derive(Serialize, Deserialize, Debug)]
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struct FetchChangedRequest {
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app_name: String,
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env: String,
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version: String,
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last_time: i64,
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ignore_global: bool,
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token: String,
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}
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fn decrypt_config(secret: &str, data: &str) -> String {
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let prefix = "{Cipher}";
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if !data.starts_with(prefix) {
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return data.to_string();
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}
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let encrypted = &data[prefix.len()..];
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decrypt_with_aes(secret, encrypted)
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}
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fn decrypt_with_aes(key: &str, data: &str) -> String {
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let mut hasher = Md5::new();
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hasher.update(key.as_bytes());
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let result = hasher.finalize();
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let md5_hex = format!("{:x}", result);
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let aes_key = &md5_hex[16..];
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let cipher_text = base64::decode(data).unwrap_or_default();
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let iv = [0u8; 16];
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let mut buf = cipher_text.clone();
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let decrypted = Aes128CbcDec::new_from_slices(aes_key.as_bytes(), &iv)
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.unwrap()
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.decrypt_padded_mut::<NoPadding>(&mut buf)
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.unwrap();
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let padding = decrypted[decrypted.len() - 1] as usize;
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String::from_utf8_lossy(&decrypted[..decrypted.len() - padding]).to_string()
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}
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pub struct ConfigClient {
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config: Config,
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configs: Arc<Mutex<HashMap<String, String>>>,
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secret: Arc<Mutex<String>>,
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global_secret: Arc<Mutex<String>>,
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last_time: Arc<Mutex<i64>>,
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handlers: Arc<Mutex<Vec<Box<dyn Fn(&HashMap<String, String>) + Send + Sync>>>>,
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}
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impl ConfigClient {
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pub fn new(config: Config) -> Self {
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Self {
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config,
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configs: Arc::new(Mutex::new(HashMap::new())),
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secret: Arc::new(Mutex::new(String::new())),
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global_secret: Arc::new(Mutex::new(String::new())),
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last_time: Arc::new(Mutex::new(0)),
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handlers: Arc::new(Mutex::new(Vec::new())),
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}
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}
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pub fn on_change<F>(&self, handler: F)
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where
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F: Fn(&HashMap<String, String>) + Send + Sync + 'static,
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{
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self.handlers.lock().unwrap().push(Box::new(handler));
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}
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pub fn get(&self, key: &str) -> Option<String> {
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self.configs.lock().unwrap().get(key).cloned()
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}
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pub fn get_all(&self) -> HashMap<String, String> {
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self.configs.lock().unwrap().clone()
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}
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pub async fn start(&self) -> Result<(), Box<dyn std::error::Error>> {
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self.fetch_all().await?;
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let configs = self.configs.clone();
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let secret = self.secret.clone();
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let global_secret = self.global_secret.clone();
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let last_time = self.last_time.clone();
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let handlers = self.handlers.clone();
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let config = self.config.clone();
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tokio::spawn(async move {
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loop {
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tokio::time::sleep(Duration::from_secs(config.sync_interval)).await;
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// fetch_changed logic here
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}
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});
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Ok(())
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}
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async fn fetch_all(&self) -> Result<(), Box<dyn std::error::Error>> {
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let url = format!("{}/api/fetchAllConfigs", self.config.base_url);
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let client = reqwest::Client::new();
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let payload = serde_json::json!({
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"appName": self.config.app_name,
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"env": self.config.env,
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"version": self.config.version,
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"ignoreGlobal": self.config.ignore_global,
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"token": self.config.token,
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});
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let resp = client.post(&url).json(&payload).send().await?;
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let data: HashMap<String, serde_json::Value> = resp.json().await?;
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if let Some(code) = data.get("code") {
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if code.as_i64() != Some(0) {
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return Err("server error".into());
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}
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}
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if let Some(s) = data.get("kenaito.config.encrypt-secret") {
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*self.secret.lock().unwrap() = s.as_str().unwrap_or("").to_string();
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}
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if let Some(gs) = data.get("kenaito.config.global-encrypt-secret") {
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*self.global_secret.lock().unwrap() = gs.as_str().unwrap_or("").to_string();
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}
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if let Some(ts) = data.get("latest.fetch.timestamp") {
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*self.last_time.lock().unwrap() = ts.as_i64().unwrap_or(0);
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}
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let mut configs = self.configs.lock().unwrap();
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let secret = self.secret.lock().unwrap().clone();
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let global_secret = self.global_secret.lock().unwrap().clone();
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for (k, v) in data.iter() {
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if k.starts_with("kenaito.") || k == "latest.fetch.timestamp" {
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continue;
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}
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if let Some(s) = v.as_str() {
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let mut decrypted = decrypt_config(&secret, s);
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if decrypted == s && !global_secret.is_empty() {
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decrypted = decrypt_config(&global_secret, s);
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}
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configs.insert(k.clone(), decrypted);
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}
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}
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Ok(())
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}
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}
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