Initial commit: stats-gateway gRPC service + dashboard + CLI

psp-stats-cli/cmd/recent.go

@@ -0,0 +1,65 @@
+package cmd
+
+import (
+	"context"
+	"crypto/tls"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"time"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+
+	statsv1 "github.com/bergabruh/stats-gateway/gen/stats/v1"
+)
+
+func Recent(args []string) {
+	fs := flag.NewFlagSet("recent", flag.ExitOnError)
+	server := fs.String("server", "stats.projectshitpost.fun:443", "gRPC endpoint host:port")
+	node := fs.String("node", "", "fl|pl1 (empty = both)")
+	limit := fs.Int("limit", 20, "max samples (1..1000)")
+	since := fs.String("since", "", "RFC3339 lower bound (optional)")
+	timeout := fs.Duration("timeout", 10*time.Second, "")
+	fs.Parse(args)
+
+	conn, err := grpc.NewClient(*server,
+		grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})))
+	if err != nil {
+		log.Fatalf("dial: %v", err)
+	}
+	defer conn.Close()
+
+	client := statsv1.NewSpeedStatusClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), *timeout)
+	defer cancel()
+
+	stream, err := client.RecentResults(ctx, &statsv1.Filter{
+		Node:  *node,
+		Limit: int32(*limit),
+		Since: *since,
+	})
+	if err != nil {
+		log.Fatalf("RecentResults: %v", err)
+	}
+
+	count := 0
+	for {
+		s, err := stream.Recv()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "recv: %v\n", err)
+			os.Exit(1)
+		}
+		fmt.Printf("%s  %-3s  http=%6.1fms  tls=%6.1fms  tcp=%6.1fms  dns=%5.1fms\n",
+			s.Timestamp, s.Node, s.HttpLatencyMs, s.TlsHandshakeMs, s.TcpRttMs, s.DnsResolveMs)
+		count++
+	}
+	if count == 0 {
+		fmt.Fprintln(os.Stderr, "(no samples)")
+	}
+}