feat: 测试交付 Q1 混沌压测骨架与 Q4 镜像骨架

cmd/nixmsg/healthcheck.go

@@ -3,36 +3,74 @@ package main
 import (
 	"fmt"
 	"io"
+	"net"
 	"net/http"
 	"os"
 	"path/filepath"
 	"strings"
 	"time"
+
+	"git.asio.asia/nixevol/NixMsg/internal/config"
 )
 
+// healthcheck 请求本机 /healthz，成功退出 0。给 Docker HEALTHCHECK 用。
 func cmdHealthcheck(_ []string) error {
-	cfg, err := loadAndValidateConfig()
+	cfgPath := config.PathFromEnv()
+	cfg, err := config.Load(cfgPath)
+	if err != nil {
+		// 无配置时仍尝试 data_dir 默认值下的 listen.addr
+		cfg = config.Default()
+	}
+	addr, err := resolveHealthAddr(cfg.DataDir, cfg.Listen)
 	if err != nil {
 		return err
 	}
-	addrBytes, err := os.ReadFile(filepath.Join(cfg.DataDir, "listen.addr"))
-	if err != nil {
-		return fmt.Errorf("read listen.addr: %w", err)
-	}
-	addr := strings.TrimSpace(string(addrBytes))
-	if addr == "" {
-		return fmt.Errorf("listen.addr is empty")
-	}
 	url := "http://" + addr + "/healthz"
-	client := &http.Client{Timeout: 5 * time.Second}
+	client := &http.Client{Timeout: 3 * time.Second}
 	resp, err := client.Get(url)
 	if err != nil {
-		return err
+		return fmt.Errorf("healthcheck %s: %w", url, err)
 	}
 	defer func() { _ = resp.Body.Close() }()
-	body, _ := io.ReadAll(io.LimitReader(resp.Body, 1024))
+	_, _ = io.Copy(io.Discard, resp.Body)
 	if resp.StatusCode != http.StatusOK {
-		return fmt.Errorf("healthz status %d: %s", resp.StatusCode, strings.TrimSpace(string(body)))
+		return fmt.Errorf("healthcheck %s: status %d", url, resp.StatusCode)
 	}
 	return nil
 }
+
+func resolveHealthAddr(dataDir, listen string) (string, error) {
+	path := filepath.Join(dataDir, "listen.addr")
+	if b, err := os.ReadFile(path); err == nil {
+		addr := strings.TrimSpace(string(b))
+		if addr != "" {
+			return rewriteLoopback(addr), nil
+		}
+	}
+	if listen == "" {
+		return "", fmt.Errorf("no listen.addr and empty listen")
+	}
+	host, port, err := net.SplitHostPort(listen)
+	if err != nil {
+		// listen 可能是 ":7443"
+		if strings.HasPrefix(listen, ":") {
+			return "127.0.0.1" + listen, nil
+		}
+		return "", fmt.Errorf("parse listen %q: %w", listen, err)
+	}
+	if host == "" || host == "0.0.0.0" || host == "::" {
+		host = "127.0.0.1"
+	}
+	return net.JoinHostPort(host, port), nil
+}
+
+func rewriteLoopback(addr string) string {
+	host, port, err := net.SplitHostPort(addr)
+	if err != nil {
+		return addr
+	}
+	if host == "" || host == "0.0.0.0" || host == "::" {
+		host = "127.0.0.1"
+	}
+	return net.JoinHostPort(host, port)
+}