Files
forgetting/internal/ui/monitor_test.go
T
maeneko 96c21408e6 Prometheus on a node; panel under a URL prefix; open ports on migrate import
A panel without VPN (e.g. after the move) can use a Prometheus that lives on
a node, such as the one with history left on the old server (node #0). Both
directions go through the agent's WSS: the node's Prometheus scrapes
127.0.0.1:AGENT_METRICS_PORT/metrics, the agent checks its token and asks
core (metrics → metrics_res, the same exposition as /metrics, at most once
per 5 s per connection); the monitor tab reads it back through the agent,
which forwards only GET /-/ready and /api/v1/query[_range]. The panel finds
it by itself (local first, then the lowest-id node), and the install/remove
buttons work on a panel without VPN. `monitor install` on a node without its
own panel picks AGENT_METRICS_PORT, writes it to cli.env and restarts the
agent; on the old server it keeps the collected data.

The panel works behind nginx in a subfolder: relative asset and API paths,
relative directory redirects, and the client address from X-Forwarded-For /
X-Real-IP only from trusted proxies (loopback, TRUST_PROXY).

migrate import opens the moved SUB_PORT/NODE_PORT in UFW when it is active.
2026-10-21 19:25:54 +03:00

144 lines
4.6 KiB
Go

package ui
import (
"context"
"crypto/ed25519"
"crypto/rand"
"crypto/sha256"
"crypto/x509"
"encoding/hex"
"encoding/pem"
"io"
"net"
"net/http"
"net/http/httptest"
"os"
"os/exec"
"path/filepath"
"strconv"
"strings"
"testing"
"time"
"github.com/maeneko/forgetting/internal/agent"
)
func freePort(t *testing.T) int {
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer l.Close()
return l.Addr().(*net.TCPAddr).Port
}
// Панель без VPN, Prometheus — на ноде #0 (сервер, с которого панель переехала): вкладка
// читает его через агента, а сам он скрейпит метрики панели у агента, тот — у core.
func TestPrometheusOnNodeZero(t *testing.T) {
if _, err := exec.LookPath("openssl"); err != nil {
t.Skip("нет openssl для сертификата хаба")
}
dir := t.TempDir()
hubPort := freePort(t)
t.Setenv("NODE_TLS_KEY_FILE", filepath.Join(dir, "node_tls.key"))
t.Setenv("NODE_TLS_CERT_FILE", filepath.Join(dir, "node_tls.crt"))
a := testApp(t, dir, "off")
t.Setenv("NODE_PORT", strconv.Itoa(hubPort))
var err error
if a.nodes, err = newNodes(a); err != nil {
t.Fatal(err)
}
if a.metrics, err = newMetrics(a); err != nil {
t.Fatal(err)
}
pub, priv, _ := ed25519.GenerateKey(rand.Reader)
der, _ := x509.MarshalPKCS8PrivateKey(priv)
keyFile := filepath.Join(dir, "node.key")
os.WriteFile(keyFile, pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: der}), 0o600)
if _, err := a.db.Exec("INSERT INTO nodes (id, name, pub, created_at) VALUES (0, 'VPN', ?, 1)", b64url.EncodeToString(pub)); err != nil {
t.Fatal(err)
}
ctrl := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.URL.Path {
case "/api/metrics":
io.WriteString(w, `{"up":true,"peers":{"total":2,"online":1}}`)
case "/health":
io.WriteString(w, `{"status":"ok","server":"VPN"}`)
default:
w.WriteHeader(404)
}
}))
defer ctrl.Close()
prom := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.URL.Path {
case "/-/ready":
io.WriteString(w, "Prometheus Server is Ready.\n")
case "/api/v1/query_range":
io.WriteString(w, `{"status":"success","data":{"resultType":"matrix","result":[{"metric":{"server":"VPN","server_id":"0"},"values":[[100,"3"],[115,"4"]]}]}}`)
default:
w.WriteHeader(400)
}
}))
defer prom.Close()
a.nodes.Start()
metricsPort := freePort(t)
hashFile := filepath.Join(dir, "monitor_token.sha256")
sum := sha256.Sum256([]byte("awgm_node"))
os.WriteFile(hashFile, []byte(hex.EncodeToString(sum[:])+"\n"), 0o644)
ag, err := agent.New(agent.Config{
CoreHost: "127.0.0.1", CorePort: hubPort, CorePin: b64url.EncodeToString(a.nodes.pin), NodeID: 0,
Ctrl: ctrl.URL, NodeKeyFile: keyFile, InternalKey: filepath.Join(dir, "none"),
PromURL: prom.URL, MetricsPort: metricsPort, MonitorHash: hashFile,
Logf: t.Logf, Errorf: t.Logf,
})
if err != nil {
t.Fatal(err)
}
ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
defer cancel()
go ag.Run(ctx)
for !a.nodes.IsOnline(0) {
if ctx.Err() != nil {
t.Fatal("нода #0 не подключилась")
}
time.Sleep(20 * time.Millisecond)
}
m := newMonitor(a)
m.promURL = "http://127.0.0.1:1" // своего Prometheus у панели нет
src := m.source()
if src == nil || src.local || src.node != 0 {
t.Fatalf("Prometheus не найден на ноде #0: %+v", src)
}
s, err := m.rangeQuery(src, "awg_peers_online", 100, 115, 15)
if err != nil || len(s.ids) != 1 || s.m[0].name != "VPN" || len(s.m[0].points) != 2 || s.m[0].points[1][1] != 4 {
t.Fatalf("query_range через агента: %+v %v", s, err)
}
if h := m.host(m.target(src, nil)); h == nil {
t.Error("вкладка не знает, на каком сервере Prometheus")
}
req, _ := http.NewRequest("GET", "http://127.0.0.1:"+strconv.Itoa(metricsPort)+"/metrics", nil)
req.Header.Set("Authorization", "Bearer awgm_node")
resp, err := http.DefaultClient.Do(req)
if err != nil {
t.Fatal(err)
}
body, _ := io.ReadAll(resp.Body)
resp.Body.Close()
if resp.StatusCode != 200 || !strings.Contains(string(body), `awg_peers_online{server="VPN",server_id="0"} 1`) {
t.Errorf("скрейп через агента: %d\n%s", resp.StatusCode, body)
}
// Второй скрейп сразу же — отказ: каждый опрашивает все серверы.
resp, err = http.DefaultClient.Do(req)
if err == nil {
resp.Body.Close()
if resp.StatusCode != 429 {
t.Errorf("частый скрейп: %d", resp.StatusCode)
}
}
}