initial commit

internal/config/config.go

@@ -0,0 +1,85 @@
+package config
+
+import (
+	"os"
+	"strconv"
+)
+
+// Config holds all configuration for meta-core
+type Config struct {
+	// Core paths
+	MetaCorePath string // Path to meta-core volume (default: /meta-core)
+	FilesPath    string // Path to files volume (default: /files)
+
+	// Service identification
+	ServiceName    string // Service name (e.g., "meta-sort", "meta-fuse")
+	ServiceVersion string // Service version (default: "1.0.0")
+	APIPort        int    // Service HTTP port (for leader info)
+	BaseURL        string // Base URL for stable service discovery
+
+	// Redis configuration
+	RedisPort int // Redis port (default: 6379)
+
+	// HTTP API configuration
+	HTTPPort int    // HTTP API port (default: 9000)
+	HTTPHost string // HTTP API host (default: "127.0.0.1")
+
+	// Timing configuration
+	HealthCheckIntervalMS int // Health check interval in ms (default: 5000)
+	HeartbeatIntervalMS   int // Service heartbeat interval in ms (default: 30000)
+	StaleThresholdMS      int // Stale service threshold in ms (default: 60000)
+}
+
+// Load creates a Config from environment variables
+func Load() *Config {
+	return &Config{
+		MetaCorePath:          getEnv("META_CORE_PATH", "/meta-core"),
+		FilesPath:             getEnv("FILES_PATH", "/files"),
+		ServiceName:           getEnv("SERVICE_NAME", "meta-core"),
+		ServiceVersion:        getEnv("SERVICE_VERSION", "1.0.0"),
+		APIPort:               getEnvInt("API_PORT", 8180),
+		BaseURL:               getEnv("BASE_URL", ""),
+		RedisPort:             getEnvInt("REDIS_PORT", 6379),
+		HTTPPort:              getEnvInt("META_CORE_HTTP_PORT", 9000),
+		HTTPHost:              getEnv("META_CORE_HTTP_HOST", "127.0.0.1"),
+		HealthCheckIntervalMS: getEnvInt("HEALTH_CHECK_INTERVAL_MS", 5000),
+		HeartbeatIntervalMS:   getEnvInt("HEARTBEAT_INTERVAL_MS", 30000),
+		StaleThresholdMS:      getEnvInt("STALE_THRESHOLD_MS", 60000),
+	}
+}
+
+// LockFilePath returns the path to the leader lock file
+func (c *Config) LockFilePath() string {
+	return c.MetaCorePath + "/locks/kv-leader.lock"
+}
+
+// InfoFilePath returns the path to the leader info file
+func (c *Config) InfoFilePath() string {
+	return c.MetaCorePath + "/locks/kv-leader.info"
+}
+
+// RedisDataDir returns the path to Redis data directory
+func (c *Config) RedisDataDir() string {
+	return c.MetaCorePath + "/db/redis"
+}
+
+// ServicesDir returns the path to services directory
+func (c *Config) ServicesDir() string {
+	return c.MetaCorePath + "/services"
+}
+
+func getEnv(key, defaultValue string) string {
+	if value := os.Getenv(key); value != "" {
+		return value
+	}
+	return defaultValue
+}
+
+func getEnvInt(key string, defaultValue int) int {
+	if value := os.Getenv(key); value != "" {
+		if intVal, err := strconv.Atoi(value); err == nil {
+			return intVal
+		}
+	}
+	return defaultValue
+}