feat(lua-client): 新增 Lua 客户端 SDK 及示例

2026-07-20 21:18:35 +08:00
parent 881c9319df
commit 295de72308
11 changed files with 1390 additions and 4 deletions
@@ -0,0 +1,120 @@
+#!/usr/bin/env lua
+
+-- 添加客户端库路径
+local script_dir = debug.getinfo(1, "S").source:match("@(.+)/[^/]+$") or "."
+package.path = package.path .. ";" .. script_dir .. "/../kenaito-conf-lua-client/?.lua"
+
+local kenaito = require("kenaito_conf")
+
+-- 读取环境变量
+local function get_env(key, default)
+    local value = os.getenv(key)
+    if value and value ~= "" then
+        return value
+    end
+    return default
+end
+
+-- 配置值（可被远程配置覆盖）
+local config_values = {
+    ["database.host"] = get_env("DATABASE_HOST", "192.168.1.1"),
+    ["database.port"] = get_env("DATABASE_PORT", "8888"),
+    ["database.name"] = get_env("DATABASE_NAME", "xxxx"),
+    ["database.user"] = get_env("DATABASE_USER", "xxxx"),
+    ["database.password"] = get_env("DATABASE_PASSWORD", "xxxxxxxx"),
+}
+
+-- 创建配置
+local config = kenaito.Config.new({
+    base_url = get_env("KENAITO_BASE_URL", "http://localhost:8080"),
+    app_name = get_env("KENAITO_APP_NAME", "kenaito-springboot-demo"),
+    env = get_env("KENAITO_ENV", "daily"),
+    version = get_env("KENAITO_VERSION", "latest"),
+    token = get_env("KENAITO_TOKEN", ""),
+    sync_interval = tonumber(get_env("KENAITO_SYNC_INTERVAL", "10")),
+    cache_dir = get_env("KENAITO_CACHE_DIR", "."),
+})
+
+-- 创建客户端
+local client = kenaito.Client.new({ config = config })
+
+-- 监听配置变更
+client:on_change(function(changed)
+    print("Config changed:")
+    for k, v in pairs(changed) do
+        print("  " .. k .. " = " .. v)
+        if config_values[k] then
+            config_values[k] = v
+            print("  [updated] " .. k .. " = " .. v)
+        end
+    end
+end)
+
+-- 启动客户端
+local ok, err = pcall(function()
+    client:start()
+end)
+
+if not ok then
+    print("Failed to init config client, using local defaults: " .. tostring(err))
+end
+
+-- 应用远程配置
+local remote = client:get_all()
+local count = 0
+for _ in pairs(remote) do
+    count = count + 1
+end
+
+for k, v in pairs(remote) do
+    if config_values[k] then
+        config_values[k] = v
+    end
+end
+
+print("loaded " .. count .. " configs from remote")
+print()
+
+-- 显示当前配置
+print("Current configs:")
+local keys = {}
+for k in pairs(config_values) do
+    table.insert(keys, k)
+end
+table.sort(keys)
+for _, k in ipairs(keys) do
+    print("  " .. k .. " = " .. config_values[k])
+end
+
+print()
+print("Listening for config changes... (press Ctrl+C to stop)")
+
+-- 同步循环
+local running = true
+
+-- 注册信号处理（如果支持）
+if package.loaded["posix.signal"] then
+    local signal = require("posix.signal")
+    signal.signal(signal.SIGINT, function()
+        print("\nShutting down...")
+        running = false
+        client:stop()
+    end)
+end
+
+-- 主循环
+while running do
+    client:sync_once()
+    
+    -- 等待 sync_interval 秒，期间检查是否应该停止
+    for i = 1, config.sync_interval * 10 do
+        if not running then
+            break
+        end
+        -- 休眠 0.1 秒
+        local start = os.clock()
+        while os.clock() - start < 0.1 do
+            -- busy wait
+        end
+    end
+end