implement grpc client

cmd/agent/grpc_client.go

@@ -0,0 +1,108 @@
+package main
+
+import (
+	"context"
+	"log"
+
+	"github.com/The-Gleb/go_metrics_and_alerting/internal/domain/entity"
+	"github.com/The-Gleb/go_metrics_and_alerting/internal/logger"
+	metrics "github.com/The-Gleb/go_metrics_and_alerting/internal/proto"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+type grpcClient struct {
+	client        metrics.MetricServiceClient
+	signKey       []byte
+	publicKeyPath string
+}
+
+func NewGRPCClient(
+	address string, signKey []byte, publicKeyPath string,
+) (*grpcClient, error) {
+	conn, err := grpc.Dial(
+		address,
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithChainUnaryInterceptor(),
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	c := metrics.NewMetricServiceClient(conn)
+
+	// TODO: interceptors
+
+	return &grpcClient{
+		client:        c,
+		signKey:       signKey,
+		publicKeyPath: publicKeyPath,
+	}, nil
+
+}
+
+// func (c *grpcClient) SomeInterceptor(
+// 	ctx context.Context, method string, req any, reply any, cc *grpc.ClientConn,
+// 	invoker grpc.UnaryInvoker, opts ...grpc.CallOption,
+// ) error {
+
+// }
+
+func (c *grpcClient) SendMetricSet(metricsMap *metricsMap) {
+	metricStructs := make([]*metrics.UpdateMetricRequest, 0)
+
+	for name, value := range metricsMap.Gauge {
+
+		m := metrics.UpdateMetricRequest{
+			Type:  metrics.MetricType_GAUGE,
+			Name:  name,
+			Value: value,
+		}
+
+		metricStructs = append(metricStructs, &m)
+
+	}
+
+	metricStructs = append(metricStructs, &metrics.UpdateMetricRequest{
+		Type:  metrics.MetricType_COUNTER,
+		Name:  "PollCount",
+		Delta: metricsMap.PollCount.Load(),
+	})
+
+	in := &metrics.UpdateMetricSetRequest{
+		Metrics: metricStructs,
+	}
+
+	logger.Log.Debug("METRICS TO SEND")
+	logger.Log.Debug(metricStructs)
+
+	resp, err := c.client.UpdateMetricSet(context.Background(), in)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	logger.Log.Debugf("%d metrics updated", resp.GetUpdatedNum())
+
+}
+
+func (c *grpcClient) GetAllMetrics() ([]entity.Metric, error) {
+	resp, err := c.client.GetAllMetrics(context.Background(), &metrics.GetAllMetricsRequest{})
+	if err != nil {
+		return nil, err
+	}
+
+	metricStructs := make([]entity.Metric, len(resp.Metrics))
+
+	for _, m := range resp.Metrics {
+		counter := m.GetCounterValue()
+
+		metricStructs = append(metricStructs, entity.Metric{
+			MType: metrics.MetricType_name[int32(m.Type)],
+			ID:    m.GetName(),
+			Value: &m.GaugeValue,
+			Delta: &counter,
+		})
+	}
+
+	return metricStructs, nil
+}

cmd/agent/http_client.go

@@ -0,0 +1,189 @@
+package main
+
+import (
+	"bytes"
+	"compress/gzip"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/The-Gleb/go_metrics_and_alerting/internal/domain/entity"
+	"github.com/The-Gleb/go_metrics_and_alerting/internal/logger"
+	"github.com/go-resty/resty/v2"
+)
+
+type httpClient struct {
+	c             *resty.Client
+	publicKeyPath string
+	signKey       []byte
+}
+
+func NewHTTPClient(
+	address string,
+	signKey []byte,
+	publicKeyPath string,
+) (*httpClient, error) {
+	baseURL := fmt.Sprintf("http://%s", address)
+	client := resty.New()
+	client.
+		SetRetryCount(3).
+		SetRetryMaxWaitTime(5 * time.Second).
+		SetRetryAfter(func(c *resty.Client, r *resty.Response) (time.Duration, error) {
+			logger.Log.Debug("attempt: %d", r.Request.Attempt)
+			dur := time.Duration(r.Request.Attempt*2-1) * time.Second
+			return dur, nil
+		}).
+		SetBaseURL(baseURL)
+
+	return &httpClient{
+		c:             client,
+		publicKeyPath: publicKeyPath,
+		signKey:       signKey,
+	}, nil
+}
+
+func (c *httpClient) SendMetricSet(metrics *metricsMap) {
+	metricStructs := make([]entity.Metric, 0)
+
+	metrics.mu.RLock()
+	for name, value := range metrics.Gauge {
+		metricStructs = append(metricStructs, entity.Metric{
+			MType: "gauge",
+			ID:    name,
+			Value: &value,
+		})
+	}
+	metrics.mu.RUnlock()
+
+	counter := metrics.PollCount.Load()
+	metricStructs = append(metricStructs, entity.Metric{
+		MType: "counter",
+		ID:    "PollCount",
+		Delta: &counter,
+	})
+
+	data, err := json.Marshal(metricStructs)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	logger.Log.Debug("sent body is", string(data))
+
+	var sign []byte
+	if len(c.signKey) > 0 {
+		sign, err = hash(data, c.signKey)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		logger.Log.Debug("signKey is ", string(c.signKey))
+		logger.Log.Debug("hex encoded signature is ", hex.EncodeToString(sign))
+	}
+
+	buf := bytes.Buffer{}
+	gw := gzip.NewWriter(&buf)
+	gw.Write(data)
+	err = gw.Close()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	body := buf.Bytes()
+
+	if c.publicKeyPath != "" {
+		var err error
+		body, err = encrypt(body, c.publicKeyPath)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	resp, err := c.c.R().
+		SetHeader("Content-Type", "application/json").
+		SetHeader("Content-Encoding", "gzip").
+		SetHeader("Accept-Encoding", "gzip").
+		SetHeader("HashSHA256", hex.EncodeToString(sign)).
+		SetHeader("X-Real-IP", "127.0.0.1").
+		SetBody(body).
+		Post("/updates/")
+	if err != nil {
+		log.Fatal(err)
+		return
+	}
+
+	// logger.Log.Debug(resp.Header().Get("Content-Encoding"))
+	logger.Log.Debugf("response code %d", resp.StatusCode())
+	logger.Log.Debugf("response body %d", string(resp.Body()))
+
+}
+
+func (c *httpClient) SendMetricsJSON(metrics *metricsMap) {
+	pollCount := metrics.PollCount.Load()
+
+	for name, val := range metrics.Gauge {
+		var result entity.Metric
+		_, err := c.c.R().
+			SetBody(&entity.Metric{
+				ID:    name,
+				MType: "gauge",
+				Value: &val,
+			}).
+			SetResult(&result).
+			Post("/update/")
+
+		if err != nil {
+			return
+		}
+	}
+	var result entity.Metric
+	_, err := c.c.R().
+		SetBody(&entity.Metric{
+			ID:    "PollCount",
+			MType: "counter",
+			Delta: &pollCount,
+		}).
+		SetResult(&result).
+		Post("/update/")
+
+	if err != nil {
+		return
+	}
+	log.Printf("\nUpdated to %v\n", result)
+}
+
+func (c *httpClient) SendMetrics(metrics *metricsMap) {
+	pollCount := metrics.PollCount.Load()
+
+	for name, val := range metrics.Gauge {
+		requestURL := fmt.Sprintf("%s/update/gauge/%s/%f", c.c.BaseURL, name, val)
+
+		resp, err := c.c.R().
+			SetHeader("Content-Type", "application/json").
+			SetHeader("Content-Encoding", "gzip").
+			SetHeader("Accept-Encoding", "gzip").
+			Post(requestURL)
+		if err != nil {
+			log.Printf("client: error making http request: %s\n", err)
+			return
+		}
+		log.Println(string(resp.Body()))
+	}
+
+	requestURL := fmt.Sprintf("%s/update/counter/PollCount/%d", c.c.BaseURL, pollCount)
+	resp, err := c.c.R().
+		SetHeader("Content-Type", "application/json").
+		Post(requestURL)
+	if err != nil {
+		log.Printf("client: error making http request: %s\n", err)
+		return
+	}
+
+	logger.Log.Infow("METRICS SENT - : %s\nStatus: %d\n",
+		"ADDRES", c.c.BaseURL,
+		"Status", resp.StatusCode(),
+	)
+	log.Printf("client: status code: %d\n", resp.StatusCode())
+	log.Println(string(resp.Body()))
+}