Added Internal API Client's classes

api/basket.go

@@ -0,0 +1,36 @@
+package api
+
+import (
+	"fmt"
+
+	def "git.pbiernat.dev/egommerce/api-entities/http"
+	"github.com/go-redis/redis/v8"
+)
+
+func NewBasketAPI(redis *redis.Client) *BasketAPI {
+	return &BasketAPI{NewHttpClient(redis)}
+}
+
+type BasketAPI struct {
+	httpClient *HttpClient
+}
+
+func (a *BasketAPI) GetBasket(basketID string) (*def.GetBasketResponse, error) {
+	req := &def.GetBasketRequest{BasketID: basketID}
+	res := new(def.GetBasketResponse)
+	if err := a.httpClient.SendGet("basket", "/api/v1/basket", req, res); err != nil {
+		return nil, err
+	}
+
+	return res, nil
+}
+
+func (a *BasketAPI) GetBasketItems(basketID string) ([]*def.GetBasketItemsResponse, error) {
+	url := fmt.Sprintf("/api/v1/basket/%s/items", basketID)
+	var res []*def.GetBasketItemsResponse
+	if err := a.httpClient.SendGet("basket", url, nil, &res); err != nil {
+		return nil, err
+	}
+
+	return res, nil
+}

api/http.go

@@ -0,0 +1,98 @@
+package api
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"math/rand"
+	"net/http"
+
+	"github.com/go-redis/redis/v8"
+)
+
+const (
+	HEADER_USER_AGENT = "order-httpclient"
+)
+
+type HttpClient struct {
+	redis *redis.Client
+}
+
+func NewHttpClient(redis *redis.Client) *HttpClient {
+	return &HttpClient{redis}
+}
+
+func (c *HttpClient) SendGet(api, url string, data, out any) error {
+	res, err := c.sendRequest(api, url, http.MethodGet, data)
+	if err != nil {
+		return err
+	}
+
+	decoder := json.NewDecoder(res.Body)
+	err = decoder.Decode(&out)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *HttpClient) SendPost(api, url string, data, out any) (any, error) {
+	res, err := c.sendRequest(api, url, http.MethodPost, data)
+	if err != nil {
+		return nil, err
+	}
+
+	decoder := json.NewDecoder(res.Body)
+	err = decoder.Decode(out)
+	if err != nil {
+		return nil, err
+	}
+
+	return out, nil
+}
+
+func (c *HttpClient) sendRequest(api, url, method string, data any) (*http.Response, error) {
+	apiUrl := c.getApiUrl(api) + url
+	client := &http.Client{}
+
+	json, err := json.Marshal(&data)
+	if err != nil {
+		return nil, err
+	}
+
+	req, err := http.NewRequest(method, apiUrl, bytes.NewBuffer(json))
+	if err != nil {
+		return nil, err
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("User-Agent", HEADER_USER_AGENT)
+	res, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	// defer res.Body.Close()
+
+	return res, nil
+}
+
+func (c *HttpClient) getApiUrl(api string) string {
+	ctx, key, apiAddr := context.Background(), "internal__"+api+"_ips", api
+	// FIXME: key name ^^
+	cmd := c.redis.LLen(ctx, key)
+	if cmd.Err() == nil {
+		len := int(cmd.Val())
+		if len == 0 {
+			apiAddr = c.redis.LIndex(ctx, key, 0).Val()
+		} else {
+			apiAddr = c.redis.LIndex(ctx, key, int64(rand.Intn(len-0)+0)).Val()
+		}
+	}
+
+	if apiAddr == "" {
+		apiAddr = api // default api run on 80 int port
+	}
+
+	return "http://" + apiAddr
+}

api/pricing.go

@@ -0,0 +1,26 @@
+package api
+
+import (
+	"fmt"
+
+	def "git.pbiernat.dev/egommerce/api-entities/http"
+	"github.com/go-redis/redis/v8"
+)
+
+func NewPricingAPI(redis *redis.Client) *PricingAPI {
+	return &PricingAPI{NewHttpClient(redis)}
+}
+
+type PricingAPI struct {
+	httpClient *HttpClient
+}
+
+func (a *PricingAPI) GetProductPrice(productID int) (*def.ProductPriceResponse, error) {
+	url := fmt.Sprintf("/api/v1/product/%d", productID)
+	res := new(def.ProductPriceResponse)
+	if err := a.httpClient.SendGet("pricing", url, nil, res); err != nil {
+		return nil, err
+	}
+
+	return res, nil
+}

consul/discovery.go

@@ -14,20 +14,23 @@ type Service struct {
 	Address    string
 	appID      string
 	domain     string
+	pathPrefix string
 	port       int
 	ttl        time.Duration
 	agent      *consul.Agent
 	kv         *consul.KV
+	catalog    *consul.Catalog
 }
 
 var ErrServiceUnavailable = fmt.Errorf("Service is unavailable")
 
-func NewService(servAddr, id, name, hostname, domain string, appPort int) (*Service, error) {
+func NewService(servAddr, id, name, hostname, domain, pathPrefix string, appPort int) (*Service, error) {
 	s := new(Service)
 	s.Name = name
 	s.Address = hostname
 	s.appID = id
 	s.domain = domain
+	s.pathPrefix = pathPrefix
 	s.port = appPort
 	s.ttl = time.Second * 15
 
@@ -37,6 +40,7 @@ func NewService(servAddr, id, name, hostname, domain string, appPort int) (*Serv
 	}
 	s.agent = client.Agent()
 	s.kv = client.KV()
+	s.catalog = client.Catalog()
 
 	return s, nil
 }
@@ -104,6 +108,10 @@ func (s *Service) KV() *consul.KV {
 	return s.kv
 }
 
+func (s *Service) Catalog() *consul.Catalog {
+	return s.catalog
+}
+
 func (s *Service) healthCheck() (bool, error) {
 	alive := func() bool {
 		client := &http.Client{}
@@ -139,22 +147,18 @@ func (s *Service) healthCheck() (bool, error) {
 func (s *Service) getTags() []string {
 	tags := []string{
 		"traefik.enable=true",
-		"traefik.http.routers." + s.Name + ".rule=Headers(`X-API-SERVICE`, `" + s.Name + "`)",
+		"traefik.http.routers." + s.Name + ".rule=PathPrefix(`" + s.pathPrefix + "`)",
 		"traefik.http.routers." + s.Name + ".entryPoints=https",
 		"traefik.http.routers." + s.Name + ".tls=true",
 		"traefik.http.routers." + s.Name + ".service=" + s.Name,
-		"traefik.http.routers." + s.Name + ".middlewares=compress,requestid",
+		"traefik.http.routers." + s.Name + ".middlewares=requestid,stripprefix_" + s.Name,
 		"traefik.http.services." + s.Name + ".loadbalancer.server.scheme=http",
 		"traefik.http.services." + s.Name + ".loadbalancer.server.port=" + strconv.Itoa(s.port),
-		"traefik.http.middlewares.compress.compress=true",
+		"traefik.http.services." + s.Name + ".loadbalancer.passhostheader=false",
 		"traefik.http.middlewares.requestid.plugin.requestid.headerName=X-Request-ID",
+		"traefik.http.middlewares.stripprefix_" + s.Name + ".stripprefix.prefixes=" + s.pathPrefix,
 		"traefik.tls.certificates.certfile=/certs/client.cert",
 		"traefik.tls.certificates.keyfile=/certs/client.key",
-		// "traefik.http.services." + s.Name + ".loadbalancer.passhostheader=false",
-		// "traefik.http.services." + s.Name + ".loadbalancer.servers." + fullName + "=" + bFullAddr,
-		// "traefik.http.services." + s.Name + ".loadbalancer.servers." + fullName + ".url=" + bFullAddr,
-		// "traefik.http.services." + s.Name + ".loadbalancer.healthcheck.path=/health",
-		// "traefik.http.services." + s.Name + ".loadbalancer.healthcheck.interval=10s",
 	}
 
 	return tags

go.mod

@@ -4,6 +4,7 @@ go 1.18
 
 require (
 	github.com/fluent/fluent-logger-golang v1.9.0
+	github.com/go-redis/redis/v8 v8.11.5
 	github.com/hashicorp/consul/api v1.18.0
 	github.com/streadway/amqp v1.0.0
 )
@@ -11,6 +12,8 @@ require (
 require (
 	github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da // indirect
 	github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/fatih/color v1.9.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.1 // indirect
 	github.com/hashicorp/go-hclog v0.12.0 // indirect

go.sum

@@ -6,15 +6,22 @@ github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgI
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 h1:DDGfHa7BWjL4YnC6+E63dPcxHo2sUxDIu8g3QgEJdRY=
 github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
+github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 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=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fatih/color v1.9.0 h1:8xPHl4/q1VyqGIPif1F+1V3Y3lSmrq01EabUW3CoW5s=
 github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
 github.com/fluent/fluent-logger-golang v1.9.0 h1:zUdY44CHX2oIUc7VTNZc+4m+ORuO/mldQDA7czhWXEg=
 github.com/fluent/fluent-logger-golang v1.9.0/go.mod h1:2/HCT/jTy78yGyeNGQLGQsjF3zzzAuy6Xlk6FCMV5eU=
+github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
+github.com/go-redis/redis/v8 v8.11.5 h1:AcZZR7igkdvfVmQTPnu9WE37LRrO/YrBH5zWyjDC0oI=
+github.com/go-redis/redis/v8 v8.11.5/go.mod h1:gREzHqY1hg6oD9ngVRbLStwAWKhA0FEgq8Jd4h5lpwo=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c h1:964Od4U6p2jUkFxvCydnIczKteheJEzHRToSGK3Bnlw=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/go-cmp v0.5.7 h1:81/ik6ipDQS2aGcBfIN5dHDB36BwrStyeAQquSYCV4o=
@@ -85,6 +92,9 @@ github.com/mitchellh/go-wordwrap v1.0.0/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUb
 github.com/mitchellh/mapstructure v0.0.0-20160808181253-ca63d7c062ee/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
 github.com/mitchellh/mapstructure v1.4.1 h1:CpVNEelQCZBooIPDn+AR3NpivK/TIKU8bDxdASFVQag=
 github.com/mitchellh/mapstructure v1.4.1/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
+github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
+github.com/onsi/gomega v1.18.1 h1:M1GfJqGRrBrrGGsbxzV5dqM2U2ApXefZCQpkukxYRLE=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c h1:Lgl0gzECD8GnQ5QCWA8o6BtfL6mDH5rQgM4/fX3avOs=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
 github.com/philhofer/fwd v1.1.1 h1:GdGcTjf5RNAxwS4QLsiMzJYj5KEvPJD3Abr261yRQXQ=
@@ -149,6 +159,7 @@ golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9sn
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190907020128-2ca718005c18/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
@@ -161,7 +172,9 @@ golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1N
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=