Added wait-for-it.sh script and fetching config from consul KV store

2022-12-07 02:51:47 +01:00 · 2022-12-07 02:51:47 +01:00 · f2f8a40bd9
commit f2f8a40bd9
parent 7e938e3070
13 changed files with 330 additions and 43 deletions
--- a/Dockerfile.target
+++ b/Dockerfile.target
@ -1,11 +1,12 @@
 # Builder
-ARG BUILDER_IMAGE="git.pbiernat.dev/egommerce/order-builder:latest"
+ARG BUILDER_IMAGE
 FROM ${BUILDER_IMAGE} AS builder

 # Destination image - server
 # FROM gcr.io/distroless/base-debian10
 FROM alpine:3.17

+ARG BUILD_TIME
 ARG BIN_OUTPUT
 ARG SVC_NAME
 ARG SVC_VER
@ -14,10 +15,15 @@ LABEL dev.egommerce.image.author="Piotr Biernat"
 LABEL dev.egommerce.image.vendor="Egommerce"
 LABEL dev.egommerce.image.service=${SVC_NAME}
 LABEL dev.egommerce.image.version=${SVC_VER}
+LABEL dev.egommerce.image.build_time=${BUILD_TIME}

 WORKDIR /
 COPY --from=builder $BIN_OUTPUT /app
 COPY .env.dist /.env
+COPY ./bin/entrypoint.sh ./bin/wait-for-it.sh /
+RUN chmod 755 /entrypoint.sh

 EXPOSE 80
-ENTRYPOINT ["/app"]
+
+CMD ["/app"]
+ENTRYPOINT ["/entrypoint.sh"]
--- a/bin/entrypoint.sh
+++ b/bin/entrypoint.sh
@ -0,0 +1,25 @@
+#!/usr/bin/env sh
+set +e
+
+waitForService()
+{
+    ./wait-for-it.sh $1 -t 2 1>/dev/null 2>&1
+    status=$?
+    while [ $status != 0 ]
+    do
+        echo "[x] wating for $1..."
+        sleep 1
+        ./wait-for-it.sh $1 -t 2 1>/dev/null 2>&1
+        status=$?
+    done
+}
+
+waitForService "postgres-db:5432"
+waitForService "api-eventbus:5672"
+waitForService "api-logger:24224"
+waitForService "api-registry:8500"
+
+
+set -euo pipefail
+
+exec "$@"
--- a/bin/wait-for-it.sh
+++ b/bin/wait-for-it.sh
@ -0,0 +1,165 @@
+#!/usr/bin/env sh
+#   Use this script to test if a given TCP host/port are available
+
+set -e
+
+cmdname=$(basename "$0")
+
+echoerr() {
+    if [ "$QUIET" -ne 1 ]; then
+        printf "%s\n" "$*" 1>&2;
+    fi
+}
+
+usage()
+{
+    exitcode="$1"
+    cat << USAGE >&2
+Usage:
+    $cmdname host:port [-s] [-t timeout] [-- command args]
+    -h HOST | --host=HOST       Host or IP under test
+    -p PORT | --port=PORT       TCP port under test
+                                Alternatively, you specify the host and port as host:port
+    -s | --strict               Only execute subcommand if the test succeeds
+    -q | --quiet                Don't output any status messages
+    -t TIMEOUT | --timeout=TIMEOUT
+                                Timeout in seconds, zero for no timeout
+    -- COMMAND ARGS             Execute command with args after the test finishes
+USAGE
+    exit "$exitcode"
+}
+
+wait_for()
+{
+    if [ "$TIMEOUT" -gt 0 ]; then
+        echoerr "$cmdname: waiting $TIMEOUT seconds for $HOST:$PORT"
+    else
+        echoerr "$cmdname: waiting for $HOST:$PORT without a timeout"
+    fi
+    start_ts=$(date +%s)
+    while true
+    do
+        nc -z "$HOST" "$PORT" >/dev/null 2>&1
+        result=$?
+        if [ $result -eq 0 ]; then
+            end_ts=$(date +%s)
+            echoerr "$cmdname: $HOST:$PORT is available after $((end_ts - start_ts)) seconds"
+            break
+        fi
+        sleep 1
+    done
+    return $result
+}
+
+wait_for_wrapper()
+{
+    # In order to support SIGINT during timeout: http://unix.stackexchange.com/a/57692
+    if [ "$QUIET" -eq 1 ]; then
+        timeout "$TIMEOUT" "$0" -q -child "$HOST":"$PORT" -t "$TIMEOUT" &
+    else
+        timeout "$TIMEOUT" "$0" --child "$HOST":"$PORT" -t "$TIMEOUT" &
+    fi
+    PID=$!
+    trap 'kill -INT -$PID' INT
+    wait $PID
+    RESULT=$?
+    if [ $RESULT -ne 0 ]; then
+        echoerr "$cmdname: timeout occurred after waiting $TIMEOUT seconds for $HOST:$PORT"
+    fi
+    return $RESULT
+}
+
+TIMEOUT=15
+STRICT=0
+CHILD=0
+QUIET=0
+# process arguments
+while [ $# -gt 0 ]
+do
+    case "$1" in
+        *:* )
+        HOST=$(printf "%s\n" "$1"| cut -d : -f 1)
+        PORT=$(printf "%s\n" "$1"| cut -d : -f 2)
+        shift 1
+        ;;
+        --child)
+        CHILD=1
+        shift 1
+        ;;
+        -q | --quiet)
+        QUIET=1
+        shift 1
+        ;;
+        -s | --strict)
+        STRICT=1
+        shift 1
+        ;;
+        -h)
+        HOST="$2"
+        if [ "$HOST" = "" ]; then break; fi
+        shift 2
+        ;;
+        --host=*)
+        HOST=$(printf "%s" "$1" | cut -d = -f 2)
+        shift 1
+        ;;
+        -p)
+        PORT="$2"
+        if [ "$PORT" = "" ]; then break; fi
+        shift 2
+        ;;
+        --port=*)
+        PORT="${1#*=}"
+        shift 1
+        ;;
+        -t)
+        TIMEOUT="$2"
+        if [ "$TIMEOUT" = "" ]; then break; fi
+        shift 2
+        ;;
+        --timeout=*)
+        TIMEOUT="${1#*=}"
+        shift 1
+        ;;
+        --)
+        shift
+        break
+        ;;
+        --help)
+        usage 0
+        ;;
+        *)
+        echoerr "Unknown argument: $1"
+        usage 1
+        ;;
+    esac
+done
+
+if [ "$HOST" = "" -o "$PORT" = "" ]; then
+    echoerr "Error: you need to provide a host and port to test."
+    usage 2
+fi
+
+if [ $CHILD -gt 0 ]; then
+    wait_for
+    RESULT=$?
+    exit $RESULT
+else
+    if [ "$TIMEOUT" -gt 0 ]; then
+        wait_for_wrapper
+        RESULT=$?
+    else
+        wait_for
+        RESULT=$?
+    fi
+fi
+
+if [ "$*" != "" ]; then
+    if [ $RESULT -ne 0 -a $STRICT -eq 1 ]; then
+        echoerr "$cmdname: strict mode, refusing to execute subprocess"
+        exit $RESULT
+    fi
+    exec "$@"
+else
+    exit $RESULT
+fi
--- a/deploy/image-build.sh
+++ b/deploy/image-build.sh
@ -2,39 +2,39 @@
 # RUN IN REPO ROOT DIR !!

 export IMAGE_PREFIX="git.pbiernat.dev/egommerce/order"
-export BUILDER_IMAGE="$IMAGE_PREFIX-builder:tmp"
+export BUILDER_IMAGE="egommerce-builder:order"
+export BUILD_TIME=$(date +"%Y%m%d%H%M%S")
 export SERVER_IMAGE="$IMAGE_PREFIX-svc"
 export WORKER_IMAGE="$IMAGE_PREFIX-worker"
+export DOCKER_BUILDKIT=1

 TARGET=${1:-latest}

-[ ! -d \"src/vendor\" ] && sh -c "cd src; go mod vendor"
-
-export DOCKER_BUILDKIT=1
-
-docker build -t "$BUILDER_IMAGE" -f Dockerfile.builder . && echo "Successfully tagged $BUILDER_IMAGE"
+[ ! -d "src/vendor" ] && sh -c "cd src; go mod vendor"

 echo "Building target $IMAGE_PREFIX images..."
+docker build --rm -t "$BUILDER_IMAGE" -f Dockerfile.builder .
+
 if [ $TARGET = "latest" ]
 then
    # SERVER
    docker build --build-arg SVC_NAME=order-svc --build-arg SVC_VER="1.0" --build-arg BIN_OUTPUT=/go/bin/server \
-        --rm --build-arg BUILDER_IMAGE --cache-from "$SERVER_IMAGE:$TARGET" -t "$SERVER_IMAGE:$TARGET" \
-        -f Dockerfile.target . >/dev/null 2>&1 && echo "Successfully tagged $SERVER_IMAGE:$TARGET" &
+        --build-arg BUILDER_IMAGE=$BUILDER_IMAGE --build-arg BUILD_TIME --rm --cache-from "$SERVER_IMAGE:$TARGET" -t "$SERVER_IMAGE:$TARGET" \
+        -f Dockerfile.target . >/dev/null 2>&1 && echo "Successfully tagged $SERVER_IMAGE:$TARGET"
    
    # WORKER
    docker build --build-arg SVC_NAME=order-worker --build-arg SVC_VER="1.0" --build-arg BIN_OUTPUT=/go/bin/worker \
-        --rm --build-arg BUILDER_IMAGE --cache-from "$WORKER_IMAGE:$TARGET" -t "$WORKER_IMAGE:$TARGET" \
+        --build-arg BUILDER_IMAGE=$BUILDER_IMAGE --build-arg BUILD_TIME --rm --cache-from "$WORKER_IMAGE:$TARGET" -t "$WORKER_IMAGE:$TARGET" \
        -f Dockerfile.target . >/dev/null 2>&1 && echo "Successfully tagged $WORKER_IMAGE:$TARGET"
 else
    # SERVER
    docker build --build-arg SVC_NAME=order-svc --build-arg SVC_VER="dev" --build-arg BIN_OUTPUT=/go/bin/server \
-        --rm --build-arg BUILDER_IMAGE --no-cache -t "$SERVER_IMAGE:$TARGET" \
-        -f Dockerfile.target . >/dev/null 2>&1 && echo "Successfully tagged $SERVER_IMAGE:$TARGET" &
+        --build-arg BUILDER_IMAGE=$BUILDER_IMAGE --build-arg BUILD_TIME --rm --no-cache -t "$SERVER_IMAGE:$TARGET" \
+        -f Dockerfile.target . >/dev/null 2>&1 && echo "Successfully tagged $SERVER_IMAGE:$TARGET"

    # WORKER
    docker build --build-arg SVC_NAME=order-worker --build-arg SVC_VER="dev" --build-arg BIN_OUTPUT=/go/bin/worker \
-        --rm --build-arg BUILDER_IMAGE --no-cache -t "$WORKER_IMAGE:$TARGET" \
+        --build-arg BUILDER_IMAGE=$BUILDER_IMAGE --build-arg BUILD_TIME --rm --no-cache -t "$WORKER_IMAGE:$TARGET" \
        -f Dockerfile.target . >/dev/null 2>&1 && echo "Successfully tagged $WORKER_IMAGE:$TARGET"
 fi

--- a/deploy/image-push.sh
+++ b/deploy/image-push.sh
@ -8,5 +8,6 @@ export WORKER_IMAGE="$IMAGE_BASE-worker"
 TARGET=${1:-latest}

 echo $DOCKER_PASSWORD | docker login git.pbiernat.dev -u $DOCKER_USERNAME --password-stdin
+
 docker push "$SERVER_IMAGE:$TARGET"
 docker push "$WORKER_IMAGE:$TARGET"
--- a/src/cmd/server/main.go
+++ b/src/cmd/server/main.go
@ -23,6 +23,7 @@ const (
 	defEventBusURL   = "amqp://guest:guest@api-eventbus:5672"
 	ebEventsExchange = "api-events"
 	ebEventsQueue    = "order-svc"
+	defKVNmspc       = "dev.egommerce/service/order-svc"
 )

 func main() {
@ -41,6 +42,7 @@ func main() {
 	c.DbURL = config.GetEnv("DATABASE_URL", defDbURL)
 	c.EventBusURL = config.GetEnv("EVENTBUS_URL", defEventBusURL)
 	c.EventBusExchange = ebEventsExchange
+	c.KVNamespace = config.GetEnv("APP_KV_NAMESPACE", defKVNmspc)

 	logHost, logPort := fluentd.ParseAddr(c.LoggerAddr)
 	logger := fluentd.NewLogger(c.GetAppFullName(), logHost, logPort)
--- a/src/cmd/worker/main.go
+++ b/src/cmd/worker/main.go
@ -1,13 +1,18 @@
 package main

 import (
+	"bytes"
+	"encoding/json"
+	"errors"
 	"fmt"
 	"log"
 	"os"
 	"os/signal"
 	"strings"
 	"syscall"
+	"time"

+	discovery "git.pbiernat.dev/egommerce/go-api-pkg/consul"
 	"git.pbiernat.dev/egommerce/go-api-pkg/fluentd"
 	amqp "git.pbiernat.dev/egommerce/go-api-pkg/rabbitmq"
 	"git.pbiernat.dev/egommerce/order-service/internal/app/config"
@ -25,6 +30,7 @@ const (
 	defEventBusURL   = "amqp://guest:guest@api-eventbus:5672"
 	ebEventsExchange = "api-events"
 	ebEventsQueue    = "order-worker"
+	defKVNmspc       = "dev.egommerce/service/order-worker"
 )

 func main() {
@ -41,11 +47,28 @@ func main() {
 	c.EventBusURL = config.GetEnv("EVENTBUS_URL", defEventBusURL)
 	c.EventBusExchange = ebEventsExchange
 	c.EventBusQueue = ebEventsQueue
+	c.KVNamespace = config.GetEnv("APP_KV_NAMESPACE", defKVNmspc)

 	logHost, logPort := fluentd.ParseAddr(c.LoggerAddr)
 	logger := fluentd.NewLogger(c.GetAppFullName(), logHost, logPort)
 	defer logger.Close()

+	consul, err := discovery.NewService(c.RegistryAddr, c.AppID, c.AppName, c.AppID, "", 0)
+	if err != nil {
+		logger.Log("Error connecting to %s: %v", c.RegistryAddr, err)
+	}
+
+	go func(consul *discovery.Service) {
+		interval := time.Second * 3
+		ticker := time.NewTicker(interval)
+		for range ticker.C {
+			err := updateKVConfig(consul, c) // FIXME: duplicated in internal/app/server/server.go
+			if err != nil {
+				logger.Log("KV config update error (skipping): %v\n", err)
+			}
+		}
+	}(consul)
+
 	// db conn
 	dbConn, err := database.Connect(c.DbURL)
 	if err != nil { // fixme: add wait-for-db...
@ -142,3 +165,22 @@ func main() {
 	logger.Log("Waiting for messages...")
 	<-forever
 }
+
+func updateKVConfig(s *discovery.Service, oldCnf *server.Config) error { // FIXME: duplicated in internal/app/server/server.go
+	data, _, err := s.KV().Get(oldCnf.KVNamespace, nil)
+	if err != nil {
+		return err
+	}
+
+	if data == nil {
+		return errors.New("empty KV config data. Skipping")
+	}
+
+	buf := bytes.NewBuffer(data.Value)
+	decoder := json.NewDecoder(buf)
+	if err := decoder.Decode(oldCnf); err != nil {
+		return err
+	}
+
+	return nil
+}
--- a/src/go.mod
+++ b/src/go.mod
@ -3,7 +3,7 @@ module git.pbiernat.dev/egommerce/order-service
 go 1.18

 require (
-	git.pbiernat.dev/egommerce/go-api-pkg v0.0.101
+	git.pbiernat.dev/egommerce/go-api-pkg v0.0.108
 	github.com/gofiber/fiber/v2 v2.40.1
 	github.com/jackc/pgx/v4 v4.17.2
 	github.com/joho/godotenv v1.4.0
--- a/src/go.sum
+++ b/src/go.sum
@ -1,13 +1,13 @@
-git.pbiernat.dev/egommerce/go-api-pkg v0.0.32 h1:ArB/n30m927WMAM4u51guH+qR0Lu4NGyYnYdi7OhlzY=
-git.pbiernat.dev/egommerce/go-api-pkg v0.0.32/go.mod h1:nAwcw2MZtn/54YKq8VQK6RJAsiuoLUtPuazXg8JcqK8=
-git.pbiernat.dev/egommerce/go-api-pkg v0.0.33 h1:1tm+pvUeS6OZLvHmLM3BwFS0Ty/eA3jDRuB60OicosA=
-git.pbiernat.dev/egommerce/go-api-pkg v0.0.33/go.mod h1:nAwcw2MZtn/54YKq8VQK6RJAsiuoLUtPuazXg8JcqK8=
-git.pbiernat.dev/egommerce/go-api-pkg v0.0.34 h1:UO1x6O+cyU7yYYbDCDyhhAypuf4QGIXcmWcBEEjLuYM=
-git.pbiernat.dev/egommerce/go-api-pkg v0.0.34/go.mod h1:nAwcw2MZtn/54YKq8VQK6RJAsiuoLUtPuazXg8JcqK8=
-git.pbiernat.dev/egommerce/go-api-pkg v0.0.100 h1:jw4fiGbZTsfJXJpGV+HQiYeMGZ7DMRMoepjuIwY6FIU=
-git.pbiernat.dev/egommerce/go-api-pkg v0.0.100/go.mod h1:nAwcw2MZtn/54YKq8VQK6RJAsiuoLUtPuazXg8JcqK8=
-git.pbiernat.dev/egommerce/go-api-pkg v0.0.101 h1:NZCFAAlC94+LcN1gjrENnWUHvpWgaNksyB2N4Fiy8C4=
-git.pbiernat.dev/egommerce/go-api-pkg v0.0.101/go.mod h1:nAwcw2MZtn/54YKq8VQK6RJAsiuoLUtPuazXg8JcqK8=
+git.pbiernat.dev/egommerce/go-api-pkg v0.0.103 h1:tVSHVQOBDe1Ofcbodaa/R5gHRD4gYO/d1tw7rVuLJuA=
+git.pbiernat.dev/egommerce/go-api-pkg v0.0.103/go.mod h1:nAwcw2MZtn/54YKq8VQK6RJAsiuoLUtPuazXg8JcqK8=
+git.pbiernat.dev/egommerce/go-api-pkg v0.0.104 h1:YymR7Zyo9xjIZ9S75o2nfyNHp69n2FXHyGbTxtV1p/A=
+git.pbiernat.dev/egommerce/go-api-pkg v0.0.104/go.mod h1:nAwcw2MZtn/54YKq8VQK6RJAsiuoLUtPuazXg8JcqK8=
+git.pbiernat.dev/egommerce/go-api-pkg v0.0.105 h1:8w4p4QNaSF58iL3YiGvqXC4UjUVeeu5D10OQmImA/Z0=
+git.pbiernat.dev/egommerce/go-api-pkg v0.0.105/go.mod h1:nAwcw2MZtn/54YKq8VQK6RJAsiuoLUtPuazXg8JcqK8=
+git.pbiernat.dev/egommerce/go-api-pkg v0.0.106 h1:kOqDvQfk8MzmyQonMMLmZKhW7I5YeDyw6N8YIYHIVwA=
+git.pbiernat.dev/egommerce/go-api-pkg v0.0.106/go.mod h1:nAwcw2MZtn/54YKq8VQK6RJAsiuoLUtPuazXg8JcqK8=
+git.pbiernat.dev/egommerce/go-api-pkg v0.0.108 h1:gr5kzKNR3sCxTz+nbqtOM7vdIely5ZWb8itSLAjTo0I=
+git.pbiernat.dev/egommerce/go-api-pkg v0.0.108/go.mod h1:nAwcw2MZtn/54YKq8VQK6RJAsiuoLUtPuazXg8JcqK8=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
--- a/src/internal/app/server/config.go
+++ b/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 {
--- a/src/internal/app/server/health_handler.go
+++ b/src/internal/app/server/health_handler.go
@ -11,3 +11,7 @@ func (s *Server) HealthHandler(c *fiber.Ctx) error {
 		Status: "OK",
 	})
 }
+
+func (s *Server) ConfigHandler(c *fiber.Ctx) error {
+	return c.JSON(s.conf)
+}
--- a/src/internal/app/server/router.go
+++ b/src/internal/app/server/router.go
@ -8,12 +8,13 @@ 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")
 	order := v1.Group("/order")
 	order.Put("/:orderId/status", s.UpdateOrderStatusHandler)
-
-	s.App.Get("/health", s.HealthHandler)
 }

 func SetupMiddlewares(s *Server) {
--- a/src/internal/app/server/server.go
+++ b/src/internal/app/server/server.go
@ -1,6 +1,9 @@
 package server

 import (
+	"bytes"
+	"encoding/json"
+	"fmt"
 	"os"
 	"os/signal"
 	"syscall"
@ -16,12 +19,14 @@ import (

 type Server struct {
 	*fiber.App
+	conf      *Config
 	log       *fluentd.Logger
 	db        *pgxpool.Pool
 	ebCh      *amqp.Channel
 	discovery *discovery.Service
 	name      string
 	addr      string
+	kvNmspc   string
 }

 type Headers struct {
@ -30,13 +35,13 @@ 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)
 	}
@ -50,14 +55,27 @@ func NewServer(conf *Config, logger *fluentd.Logger, db *pgxpool.Pool, ebCh *amq
 	}
 	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 +116,23 @@ func (s *Server) GetRequestID(c *fiber.Ctx) (string, error) {
 	return hdr.RequestID, nil
 }

+func (s *Server) updateKVConfig() error { // FIXME: duplicated in cmd/worker/main.go
+	data, _, err := s.discovery.KV().Get(s.kvNmspc, nil)
+	if err != nil {
+		fmt.Println(err)
+
+		return err
+	}
+
+	kvCnf := bytes.NewBuffer(data.Value)
+	decoder := json.NewDecoder(kvCnf)
+	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())