feat: add durable Kuknos settlement coordination

infrastructure/config/config.go

@@ -3,6 +3,8 @@ package config
 
 import (
 	"fmt"
+	"os"
+	"strings"
 	"time"
 
 	"github.com/knadh/koanf/parsers/toml"
@@ -11,21 +13,22 @@ import (
 )
 
 type Config struct {
-	Environment string         `koanf:"environment"`
-	GRPC        GRPCConfig     `koanf:"grpc"`
-	Database    DatabaseConfig `koanf:"database"`
+	Environment string           `koanf:"environment"`
+	GRPC        GRPCConfig       `koanf:"grpc"`
+	Database    DatabaseConfig   `koanf:"db"`
+	Settlement  SettlementConfig `koanf:"settlement"`
 }
 
 type DashboardConfig struct {
 	Environment string         `koanf:"environment"`
 	HTTP        HTTPConfig     `koanf:"http"`
-	Database    DatabaseConfig `koanf:"database"`
+	Database    DatabaseConfig `koanf:"db"`
 }
 
 type GRPCConfig struct {
 	Host            string        `koanf:"host"`
 	Port            int           `koanf:"port"`
-	ShutdownTimeout time.Duration `koanf:"shutdown-timeout"`
+	ShutdownTimeout time.Duration `koanf:"timeout"`
 }
 
 type HTTPConfig struct {
@@ -36,12 +39,23 @@ type HTTPConfig struct {
 }
 
 type DatabaseConfig struct {
-	Host     string `koanf:"host"`
-	Port     int    `koanf:"port"`
-	Name     string `koanf:"name"`
-	User     string `koanf:"user"`
-	Password string `koanf:"password"`
-	SSLMode  string `koanf:"ssl-mode"`
+	Host         string `koanf:"host"`
+	Port         int    `koanf:"port"`
+	Name         string `koanf:"name"`
+	User         string `koanf:"user"`
+	Password     string `koanf:"password"`
+	GormLogLevel int    `koanf:"gorm-log-level"`
+	SSLMode      string `koanf:"-"`
+}
+
+type SettlementConfig struct {
+	Enabled      bool          `koanf:"enabled"`
+	Endpoint     string        `koanf:"endpoint"`
+	WorkerID     string        `koanf:"worker-id"`
+	PollInterval time.Duration `koanf:"poll-interval"`
+	BatchSize    int           `koanf:"batch-size"`
+	MaxAttempts  int           `koanf:"max-attempts"`
+	AdminToken   string        `koanf:"admin-token"`
 }
 
 func Load(path string) (*Config, error) {
@@ -52,12 +66,14 @@ func Load(path string) (*Config, error) {
 			Port:            8600,
 			ShutdownTimeout: 10 * time.Second,
 		},
-		Database: defaultDatabaseConfig(),
+		Database:   defaultDatabaseConfig(),
+		Settlement: SettlementConfig{WorkerID: "gl-settlement-1", PollInterval: 5 * time.Second, BatchSize: 20, MaxAttempts: 8},
 	}
 
 	if err := load(path, cfg); err != nil {
 		return nil, err
 	}
+	applyEnvironment(&cfg.Database, &cfg.Settlement)
 	if err := cfg.Validate(); err != nil {
 		return nil, err
 	}
@@ -78,12 +94,28 @@ func LoadDashboard(path string) (*DashboardConfig, error) {
 	if err := load(path, cfg); err != nil {
 		return nil, err
 	}
+	applyEnvironment(&cfg.Database, nil)
 	if err := cfg.Validate(); err != nil {
 		return nil, err
 	}
 	return cfg, nil
 }
 
+func applyEnvironment(database *DatabaseConfig, settlement *SettlementConfig) {
+	if value, ok := os.LookupEnv("DARANO_GL_DB_PASSWORD"); ok {
+		database.Password = value
+	}
+	if settlement == nil {
+		return
+	}
+	if value, ok := os.LookupEnv("DARANO_GL_SETTLEMENT_ENDPOINT"); ok {
+		settlement.Endpoint = strings.TrimRight(value, "/")
+	}
+	if value, ok := os.LookupEnv("DARANO_GL_ADMIN_TOKEN"); ok {
+		settlement.AdminToken = value
+	}
+}
+
 func load(path string, target any) error {
 	k := koanf.New(".")
 	if err := k.Load(file.Provider(path), toml.Parser()); err != nil {
@@ -115,6 +147,9 @@ func (c *Config) Validate() error {
 	if c.GRPC.ShutdownTimeout <= 0 {
 		return fmt.Errorf("grpc shutdown timeout must be positive")
 	}
+	if c.Environment == "production" && c.Settlement.AdminToken == "" {
+		return fmt.Errorf("settlement admin token is required in production")
+	}
 	return validateDatabase(c.Database)
 }