Initial commit (code only without large binaries)

EdgeAPI/internal/clickhouse/config.go

@@ -0,0 +1,134 @@
+// Package clickhouse 提供 ClickHouse 只读客户端，用于查询 logs_ingest（Fluent Bit 写入）。
+// 配置优先从后台页面（edgeSysSettings.clickhouseConfig）读取，其次 api.yaml，最后环境变量。
+package clickhouse
+
+import (
+	"github.com/TeaOSLab/EdgeAPI/internal/configs"
+	"github.com/TeaOSLab/EdgeAPI/internal/db/models"
+	"os"
+	"strconv"
+	"strings"
+	"sync"
+)
+
+const (
+	envHost          = "CLICKHOUSE_HOST"
+	envPort          = "CLICKHOUSE_PORT"
+	envUser          = "CLICKHOUSE_USER"
+	envPassword      = "CLICKHOUSE_PASSWORD"
+	envDatabase      = "CLICKHOUSE_DATABASE"
+	envScheme        = "CLICKHOUSE_SCHEME"
+	defaultPort      = 8443
+	defaultDB        = "default"
+	defaultScheme    = "https"
+)
+
+var (
+	sharedConfig *Config
+	configOnce   sync.Once
+	configLocker sync.Mutex
+)
+
+// Config ClickHouse 连接配置（仅查询，不从代码写库）
+type Config struct {
+	Host          string
+	Port          int
+	User          string
+	Password      string
+	Database      string
+	Scheme        string
+	TLSSkipVerify bool
+	TLSServerName string
+}
+
+// SharedConfig 返回全局配置（优先从后台 DB 读取，其次 api.yaml，最后环境变量）
+func SharedConfig() *Config {
+	configLocker.Lock()
+	defer configLocker.Unlock()
+	if sharedConfig != nil {
+		return sharedConfig
+	}
+	sharedConfig = loadConfig()
+	return sharedConfig
+}
+
+// ResetSharedConfig 清空缓存，下次 SharedConfig() 时重新从 DB/文件/环境变量加载（后台保存 ClickHouse 配置后调用）
+func ResetSharedConfig() {
+	configLocker.Lock()
+	defer configLocker.Unlock()
+	sharedConfig = nil
+}
+
+func loadConfig() *Config {
+	cfg := &Config{Port: defaultPort, Database: defaultDB, Scheme: defaultScheme, TLSSkipVerify: true}
+	// 1) 优先从后台页面配置（DB）读取
+	if models.SharedSysSettingDAO != nil {
+		if dbCfg, err := models.SharedSysSettingDAO.ReadClickHouseConfig(nil); err == nil && dbCfg != nil && dbCfg.Host != "" {
+			cfg.Host = dbCfg.Host
+			cfg.Port = dbCfg.Port
+			cfg.User = dbCfg.User
+			cfg.Password = dbCfg.Password
+			cfg.Database = dbCfg.Database
+			cfg.Scheme = normalizeScheme(dbCfg.Scheme)
+			cfg.TLSSkipVerify = true
+			cfg.TLSServerName = ""
+			if cfg.Port <= 0 {
+				cfg.Port = defaultPort
+			}
+			if cfg.Database == "" {
+				cfg.Database = defaultDB
+			}
+			return cfg
+		}
+	}
+	// 2) 其次 api.yaml
+	apiConfig, err := configs.SharedAPIConfig()
+	if err == nil && apiConfig != nil && apiConfig.ClickHouse != nil && apiConfig.ClickHouse.Host != "" {
+		ch := apiConfig.ClickHouse
+		cfg.Host = ch.Host
+		cfg.Port = ch.Port
+		cfg.User = ch.User
+		cfg.Password = ch.Password
+		cfg.Database = ch.Database
+		cfg.Scheme = normalizeScheme(ch.Scheme)
+		cfg.TLSSkipVerify = true
+		cfg.TLSServerName = ""
+		if cfg.Port <= 0 {
+			cfg.Port = defaultPort
+		}
+		if cfg.Database == "" {
+			cfg.Database = defaultDB
+		}
+		return cfg
+	}
+	// 3) 最后环境变量
+	cfg.Host = os.Getenv(envHost)
+	cfg.User = os.Getenv(envUser)
+	cfg.Password = os.Getenv(envPassword)
+	cfg.Database = os.Getenv(envDatabase)
+	if cfg.Database == "" {
+		cfg.Database = defaultDB
+	}
+	cfg.Scheme = normalizeScheme(os.Getenv(envScheme))
+	cfg.TLSServerName = ""
+	if p := os.Getenv(envPort); p != "" {
+		if v, err := strconv.Atoi(p); err == nil {
+			cfg.Port = v
+		}
+	}
+	cfg.TLSSkipVerify = true
+	return cfg
+}
+
+func normalizeScheme(scheme string) string {
+	s := strings.ToLower(strings.TrimSpace(scheme))
+	if s == "https" {
+		return "https"
+	}
+	return defaultScheme
+}
+
+// IsConfigured 是否已配置（Host 非空即视为启用 ClickHouse 查询）
+func (c *Config) IsConfigured() bool {
+	return c != nil && c.Host != ""
+}