Added KV Config support and updated build scripts

src/internal/app/server/config.go

@@ -3,18 +3,24 @@ package server
 import "fmt"
 
 type Config struct {
-	AppID            string
-	AppName          string
-	AppDomain        string
-	NetAddr          string
-	Port             int
-	LoggerAddr       string
-	RegistryAddr     string
-	DbURL            string
-	MongoDbUrl       string
-	EventBusURL      string
-	EventBusExchange string
-	EventBusQueue    string
+	AppID        string
+	AppName      string
+	AppDomain    string
+	NetAddr      string
+	Port         int
+	RegistryAddr string
+	KVNamespace  string
+
+	LoggerAddr       string `json:"logger_addr"`
+	DbURL            string `json:"db_url"`
+	MongoDbUrl       string `json:"mongodb_url"`
+	EventBusURL      string `json:"eventbus_url"`
+	EventBusExchange string `json:"eventbus_exchange"`
+	EventBusQueue    string `json:"eventbus_queue"`
+	HttpReadTimeout  int    `json:"http_read_timeout"`
+	HttpWriteTimeout int    `json:"http_write_timeout"`
+	HttpIdleTimeout  int    `json:"http_idle_timeout"`
+	// Fields with json mapping are available trough ConsulKV
 }
 
 func (c *Config) GetAppFullName() string {

src/internal/app/server/health_handler.go

@@ -10,3 +10,7 @@ func (s *Server) HealthHandler(c *fiber.Ctx) error {
 		Status: "OK",
 	})
 }
+
+func (s *Server) ConfigHandler(c *fiber.Ctx) error {
+	return c.JSON(s.conf)
+}

src/internal/app/server/router.go

@@ -9,6 +9,7 @@ import (
 
 func SetupRoutes(s *Server) {
 	s.App.Get("/health", s.HealthHandler)
+	s.App.Get("/config", s.ConfigHandler)
 
 	api := s.App.Group("/api")
 	v1 := api.Group("/v1")

src/internal/app/server/server.go

@@ -1,6 +1,9 @@
 package server
 
 import (
+	"bytes"
+	"encoding/json"
+	"fmt"
 	"os"
 	"os/signal"
 	"syscall"
@@ -15,12 +18,13 @@ import (
 
 type Server struct {
 	*fiber.App
-	log *fluentd.Logger
-	db  *pgxpool.Pool
-	// ebCh      *amqp.Channel
+	conf      *Config
+	log       *fluentd.Logger
+	db        *pgxpool.Pool
 	discovery *discovery.Service
 	name      string
 	addr      string
+	kvNmspc   string
 }
 
 type Headers struct {
@@ -29,13 +33,13 @@ type Headers struct {
 
 func NewServer(conf *Config, logger *fluentd.Logger, db *pgxpool.Pool /*, ebCh *amqp.Channel*/) *Server {
 	logger.Log("API_ID: %s", conf.AppID)
-	discovery, err := discovery.NewService(conf.RegistryAddr, conf.AppID, conf.AppName, conf.AppID, conf.AppDomain, conf.Port)
+	consul, err := discovery.NewService(conf.RegistryAddr, conf.AppID, conf.AppName, conf.AppID, conf.AppDomain, conf.Port)
 	if err != nil {
 		logger.Log("Error connecting to %s: %v", conf.RegistryAddr, err)
 	}
 
-	logger.Log("Registering service with name: %s, address: %s", discovery.Name, discovery.Address)
-	err = discovery.Register()
+	logger.Log("Registering service with name: %s, address: %s", consul.Name, consul.Address)
+	err = consul.Register()
 	if err != nil {
 		logger.Log("register error: %v", err)
 	}
@@ -49,14 +53,27 @@ func NewServer(conf *Config, logger *fluentd.Logger, db *pgxpool.Pool /*, ebCh *
 	}
 	s := &Server{
 		fiber.New(cnf),
+		conf,
 		logger,
 		db,
 		/*ebCh,*/
-		discovery,
+		consul,
 		conf.AppName,
 		conf.NetAddr,
+		conf.KVNamespace,
 	}
 
+	go func(s *Server) { // Consul KV config updater
+		interval := time.Second * 30
+		ticker := time.NewTicker(interval)
+		for range ticker.C {
+			err := s.updateKVConfig()
+			if err != nil {
+				logger.Log("KV config update error (skipping): %v\n", err)
+			}
+		}
+	}(s)
+
 	SetupMiddlewares(s)
 	SetupRoutes(s)
 
@@ -98,6 +115,23 @@ func (s *Server) GetRequestID(c *fiber.Ctx) (string, error) {
 	return hdr.RequestID, nil
 }
 
+func (s *Server) updateKVConfig() error {
+	config, _, err := s.discovery.KV().Get(s.kvNmspc, nil)
+	if err != nil {
+		fmt.Println(err)
+
+		return err
+	}
+
+	buf := bytes.NewBuffer(config.Value)
+	decoder := json.NewDecoder(buf)
+	if err := decoder.Decode(&s.conf); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func (s *Server) gracefulShutdown() error {
 	s.log.Log("Server is going down...")
 	s.log.Log("Unregistering service: %s", s.discovery.GetID())