Issue-#8 Add Metrics for Web API

Makefile

@@ -14,8 +14,9 @@ WEBAPP_INTEGRATION_TEST_PATH?=./cmd/aznum2words-webapp/it
 
 # set of env variables that you need for testing
 WEBAPP_ENV_LOCAL_TEST=\
-  HOST=0.0.0.0 \
-  PORT=8080 \
+  APP_HOST=0.0.0.0 \
+  APP_PORT=8080 \
+  METRIC_PORT=9090 \
   DEPLOY_ENV=LOCAL
 
 # this command will start a docker components that we set in docker-compose.webapp.integration.yml

cmd/aznum2words-webapp/.env.local

@@ -1,2 +1,3 @@
-PORT=8080
-HOST=0.0.0.0
+APP_HOST=0.0.0.0
+APP_PORT=8080
+METRIC_PORT=9090

cmd/aznum2words-webapp/aznum2words-webapp.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"github.com/davecgh/go-spew/spew"
 	"github.com/egasimov/aznum2words/cmd/aznum2words-webapp/api/converterapi"
 	"github.com/egasimov/aznum2words/cmd/aznum2words-webapp/api/healthapi"
 	"github.com/egasimov/aznum2words/cmd/aznum2words-webapp/config"
@@ -16,16 +15,22 @@ func main() {
 	var converterApi = new(converterapi.Api)
 	var healthApi = new(healthapi.Api)
 
-	r := router.New()
-	h := handler.NewHandler(converterApi, healthApi)
-	h.Register(r)
+	// Create a app server for handlers
+	routerApp := router.NewMainServer()
+	handlerApi := handler.NewHandler(converterApi, healthApi)
+	handlerApi.Register(routerApp)
 
-	netListenAddr := spew.Sprintf(
-		"%s:%s",
-		config.GetConfig().Host,
-		config.GetConfig().Port,
-	)
+	// Create a prometheus server for exposing metrics
+	routerPrometheus := router.NewPrometheusServer(routerApp)
+
+	go func() {
+		routerPrometheus.Logger.Fatal(routerPrometheus.Start(
+			config.GetConfig().GetMetricNetListenAddr()),
+		)
+	}()
 
 	// And we serve HTTP until the world ends.
-	r.Logger.Fatal(r.Start(netListenAddr))
+	routerApp.Logger.Fatal(routerApp.Start(
+		config.GetConfig().GetAppNetListenAddr(),
+	))
 }

cmd/aznum2words-webapp/config/config.go

@@ -1,6 +1,7 @@
 package config
 
 import (
+	"fmt"
 	"github.com/alexflint/go-arg"
 	"github.com/egasimov/aznum2words/cmd/aznum2words-webapp/constant"
 	"github.com/joho/godotenv"
@@ -10,8 +11,25 @@ import (
 
 // Config holds a configuration variables.
 type Config struct {
-	Port string `arg:"-p, env:PORT" default:"8080"`
-	Host string `arg:"-h, env:HOST" default:"0.0.0.0"`
+	AppHost    string `arg:"-h, env:APP_HOST" default:"0.0.0.0"`
+	AppPort    string `arg:"-p, env:APP_PORT" default:"8080"`
+	MetricPort string `arg:"-m, env:METRIC_PORT" default:"9090"`
+}
+
+func (this *Config) GetAppNetListenAddr() string {
+	return fmt.Sprintf(
+		"%s:%s",
+		this.AppHost,
+		this.AppPort,
+	)
+}
+
+func (this *Config) GetMetricNetListenAddr() string {
+	return fmt.Sprintf(
+		"%s:%s",
+		this.AppHost,
+		this.MetricPort,
+	)
 }
 
 var conf *Config = &Config{}

cmd/aznum2words-webapp/it/e2e_test.go

@@ -24,14 +24,19 @@ func TestConverterAPI_Success(t *testing.T) {
 		"negative-floating-point-numbers.json",
 	}
 
-	hostVal := os.Getenv("HOST")
-	portVal := os.Getenv("PORT")
-	if portVal == "" {
-		portVal = "8080"
+	appHostVal := os.Getenv("APP_HOST")
+	appPortVal := os.Getenv("APP_PORT")
+	if appPortVal == "" {
+		appPortVal = "8080"
+	}
+
+	metricPortVal := os.Getenv("METRIC_PORT")
+	if metricPortVal == "" {
+		metricPortVal = "9090"
 	}
 
 	apiClient := aznum2wordsclient.AzNum2WordsClient{
-		Server:         fmt.Sprintf("http://%s:%s", hostVal, portVal),
+		Server:         fmt.Sprintf("http://%s:%s", appHostVal, appPortVal),
 		Client:         http.DefaultClient,
 		RequestEditors: nil,
 	}

cmd/aznum2words-webapp/router/router.go

@@ -1,6 +1,7 @@
 package router
 
 import (
+	"github.com/labstack/echo-contrib/prometheus"
 	"github.com/labstack/echo/v4"
 	echomiddleware "github.com/labstack/echo/v4/middleware"
 )
@@ -12,16 +13,41 @@ var loggerConfig = echomiddleware.LoggerConfig{
 	CustomTimeFormat: "2006-01-02 15:04:05.00000",
 }
 
-func New() *echo.Echo {
-	e := echo.New()
+func NewMainServer() *echo.Echo {
+	echoMainServer := echo.New()
+	echoMainServer.HideBanner = true
 
-	e.Use(echomiddleware.CORS())
-	e.Use(echomiddleware.RequestIDWithConfig(
+	echoMainServer.Use(echomiddleware.CORS())
+	echoMainServer.Use(echomiddleware.RequestIDWithConfig(
 		echomiddleware.RequestIDConfig{
 			TargetHeader: echo.HeaderXCorrelationID,
 		}))
 	// Log all requests
-	e.Use(echomiddleware.LoggerWithConfig(loggerConfig))
+	echoMainServer.Use(echomiddleware.LoggerWithConfig(loggerConfig))
 
-	return e
+	return echoMainServer
+}
+
+func NewPrometheusServer(echoMainServer *echo.Echo) *echo.Echo {
+	// Create Prometheus server and Middleware
+	echoPrometheus := echo.New()
+	echoPrometheus.HideBanner = true
+
+	echoPrometheus.Use(echomiddleware.CORS())
+	echoPrometheus.Use(echomiddleware.RequestIDWithConfig(
+		echomiddleware.RequestIDConfig{
+			TargetHeader: echo.HeaderXCorrelationID,
+		}))
+	// Log all requests
+	echoPrometheus.Use(echomiddleware.LoggerWithConfig(loggerConfig))
+
+	prom := prometheus.NewPrometheus("echo", nil)
+
+	// Scrape metrics from Main Server
+	echoMainServer.Use(prom.HandlerFunc)
+
+	// Setup metrics endpoint at another server
+	prom.SetMetricsPath(echoPrometheus)
+
+	return echoPrometheus
 }

docker-compose.webapp.integration.yml

@@ -10,9 +10,11 @@ services:
       - aznum2words-network
     ports:
       - "8080:8080"
+      - "9090:9090"
     environment:
       - DEPLOY_ENV=STAGING
-      - PORT=8080
+      - APP_PORT=8080
+      - METRIC_PORT=9090
 networks:
   aznum2words-network:
     ipam:

docker-compose.webapp.local.yml

@@ -9,10 +9,12 @@ services:
     networks:
       - aznum2words-network
     ports:
-      - "8080:${PORT}"
+      - "8080:${APP_PORT}"
+      - "9090:${METRIC_PORT}"
     environment:
       - DEPLOY_ENV=TEST
-      - PORT=8080
+      - APP_PORT=8080
+      - METRIC_PORT=9090
 networks:
   aznum2words-network:
     ipam:

go.mod

@@ -4,29 +4,41 @@ go 1.18
 
 require (
 	github.com/alexflint/go-arg v1.4.3
-	github.com/davecgh/go-spew v1.1.1
 	github.com/deepmap/oapi-codegen v1.12.4
 	github.com/getkin/kin-openapi v0.107.0
 	github.com/joho/godotenv v1.5.1
+	github.com/labstack/echo-contrib v0.14.1
 	github.com/labstack/echo/v4 v4.10.2
 	github.com/spf13/cobra v1.6.1
 )
 
 require (
 	github.com/alexflint/go-scalar v1.1.0 // indirect
 	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
 	github.com/go-openapi/swag v0.21.1 // indirect
 	github.com/golang-jwt/jwt v3.2.2+incompatible // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/inconshreveable/mousetrap v1.0.1 // indirect
 	github.com/invopop/yaml v0.1.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/labstack/gommon v0.4.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.17 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
+	github.com/prometheus/client_golang v1.14.0 // indirect
+	github.com/prometheus/client_model v0.3.0 // indirect
+	github.com/prometheus/common v0.40.0 // indirect
+	github.com/prometheus/procfs v0.9.0 // indirect
+	github.com/rogpeppe/go-internal v1.10.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
@@ -35,6 +47,7 @@ require (
 	golang.org/x/sys v0.5.0 // indirect
 	golang.org/x/text v0.7.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -5,7 +5,11 @@ github.com/alexflint/go-scalar v1.1.0 h1:aaAouLLzI9TChcPXotr6gUhq+Scr8rl0P9P4Pnl
 github.com/alexflint/go-scalar v1.1.0/go.mod h1:LoFvNMqS1CPrMVltza4LvnGKhaSpc3oyLEBUZVhhS2o=
 github.com/apapsch/go-jsonmerge/v2 v2.0.0 h1:axGnT1gRIfimI7gJifB699GoE/oq+F2MU7Dml6nw9rQ=
 github.com/apapsch/go-jsonmerge/v2 v2.0.0/go.mod h1:lvDnEdqiQrp0O42VQGgmlKpxL1AP2+08jFMw88y4klk=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bmatcuk/doublestar v1.1.1/go.mod h1:UD6OnuiIn0yFxxA2le/rnRU1G4RaI4UvFv1sNto9p6w=
+github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
+github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -22,6 +26,14 @@ github.com/go-openapi/swag v0.21.1 h1:wm0rhTb5z7qpJRHBdPOMuY4QjVUMbF6/kwoYeRAOrK
 github.com/go-openapi/swag v0.21.1/go.mod h1:QYRuS/SOXUCsnplDa677K7+DxSOj6IPNl/eQntq43wQ=
 github.com/golang-jwt/jwt v3.2.2+incompatible h1:IfV12K8xAKAnZqdXVzCZ+TOjboZ2keLg81eXfW3O+oY=
 github.com/golang-jwt/jwt v3.2.2+incompatible/go.mod h1:8pz2t5EyA70fFQQSrl6XZXzqecmYZeUEB8OUGHkxJ+I=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.5/go.mod h1:6O5/vntMXwX2lRkT1hjjk0nAC1IDOTvTlVgjlRvqsdk=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
+github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
@@ -33,12 +45,17 @@ github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
 github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/juju/gnuflag v0.0.0-20171113085948-2ce1bb71843d/go.mod h1:2PavIy+JPciBPrBUjwbNvtwB6RQlve+hkpll6QSNmOE=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/labstack/echo-contrib v0.14.1 h1:oNUSCeXQOlCGt3eWafzu0mkXjIh3SINnYgE/UR2kYXQ=
+github.com/labstack/echo-contrib v0.14.1/go.mod h1:6jgpHPjGRk0qrysPCfv3SCau6kewjQtYzOk1fLZGMeQ=
 github.com/labstack/echo/v4 v4.10.2 h1:n1jAhnq/elIFTHr1EYpiYtyKgx4RW9ccVgkqByZaN2M=
 github.com/labstack/echo/v4 v4.10.2/go.mod h1:OEyqf2//K1DFdE57vw2DRgWY0M7s65IVQO2FzvI4J5k=
 github.com/labstack/gommon v0.4.0 h1:y7cvthEAEbU0yHOf4axH8ZG2NH8knB9iNSoTO8dyIk8=
@@ -55,12 +72,28 @@ github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27k
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPng=
 github.com/mattn/go-isatty v0.0.17/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zkfA9PSy5pEvNWRP0ET0TIVo=
+github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
+github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
 github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 h1:RWengNIwukTxcDr9M+97sNutRR1RKhG96O6jWumTTnw=
 github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826/go.mod h1:TaXosZuwdSHYgviHp1DAtfrULt5eUgsSMsZf+YrPgl8=
-github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/prometheus/client_golang v1.14.0 h1:nJdhIvne2eSX/XRAFV9PcvFFRbrjbcTUj0VP62TMhnw=
+github.com/prometheus/client_golang v1.14.0/go.mod h1:8vpkKitgIVNcqrRBWh1C4TIUQgYNtG/XQE4E/Zae36Y=
+github.com/prometheus/client_model v0.3.0 h1:UBgGFHqYdG/TPFD1B1ogZywDqEkwp3fBMvqdiQ7Xew4=
+github.com/prometheus/client_model v0.3.0/go.mod h1:LDGWKZIo7rky3hgvBe+caln+Dr3dPggB5dvjtD7w9+w=
+github.com/prometheus/common v0.40.0 h1:Afz7EVRqGg2Mqqf4JuF9vdvp1pi220m55Pi9T2JnO4Q=
+github.com/prometheus/common v0.40.0/go.mod h1:L65ZJPSmfn/UBWLQIHV7dBrKFidB/wPlF1y5TlSt9OE=
+github.com/prometheus/procfs v0.9.0 h1:wzCHvIvM5SxWqYvwgVL7yJY8Lz3PKn49KQtpgMYJfhI=
+github.com/prometheus/procfs v0.9.0/go.mod h1:+pB4zwohETzFnmlpe6yd2lSc+0/46IYZRB/chUwxUZY=
+github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
+github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/spf13/cobra v1.6.1 h1:o94oiPyS4KD1mPy2fmcYYHHfCxLqYjJOhGsCHFZtEzA=
 github.com/spf13/cobra v1.6.1/go.mod h1:IOw/AERYS7UzyrGinqmz6HLUo219MORXGxhbaJUqzrY=
@@ -83,6 +116,7 @@ golang.org/x/crypto v0.6.0 h1:qfktjS5LUO+fFKeJXZ+ikTRijMmljikvG68fpMMruSc=
 golang.org/x/crypto v0.6.0/go.mod h1:OFC/31mSvZgRz0V1QTNCzfAI1aIRzbiufJtkMIlEp58=
 golang.org/x/net v0.7.0 h1:rJrUqqhjsgNp7KqAIc25s9pZnjU7TUcSY7HcVZjdn1g=
 golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211103235746-7861aae1554b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -93,10 +127,15 @@ golang.org/x/text v0.7.0 h1:4BRB4x83lYWy72KwLD/qYDuTu7q9PjSagHvijDw7cLo=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
 golang.org/x/time v0.3.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=

webapp.Dockerfile

@@ -26,6 +26,7 @@ WORKDIR /
 COPY --from=build /aznum2words-go-svc /app/aznum2words-go-svc-exec
 
 EXPOSE 8080
+EXPOSE 9090
 
 USER root