Добавил логи

internal/metadata/http.go

@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"log/slog"
 	"net/http"
 	"net/url"
 	"time"
@@ -38,7 +39,7 @@ const maxBody = 4 << 20 // 4 MiB — потолок на тело ответа
 
 // getJSON выполняет GET и декодирует JSON-ответ в out. headers — опц.
 // дополнительные заголовки (напр. Authorization).
-func getJSON(ctx context.Context, hc *http.Client, rawURL string, headers map[string]string, out any) error {
+func getJSON(ctx context.Context, hc *http.Client, log *slog.Logger, rawURL string, headers map[string]string, out any) error {
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, rawURL, nil)
 	if err != nil {
 		return fmt.Errorf("metadata: build request: %w", err)
@@ -47,11 +48,11 @@ func getJSON(ctx context.Context, hc *http.Client, rawURL string, headers map[st
 	for k, v := range headers {
 		req.Header.Set(k, v)
 	}
-	return doJSON(hc, req, out)
+	return doJSON(hc, log, req, out)
 }
 
 // postJSON выполняет POST с JSON-телом и декодирует ответ.
-func postJSON(ctx context.Context, hc *http.Client, rawURL string, body, out any) error {
+func postJSON(ctx context.Context, hc *http.Client, log *slog.Logger, rawURL string, body, out any) error {
 	payload, err := json.Marshal(body)
 	if err != nil {
 		return fmt.Errorf("metadata: marshal body: %w", err)
@@ -62,26 +63,46 @@ func postJSON(ctx context.Context, hc *http.Client, rawURL string, body, out any
 	}
 	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("Accept", "application/json")
-	return doJSON(hc, req, out)
+	return doJSON(hc, log, req, out)
 }
 
-func doJSON(hc *http.Client, req *http.Request, out any) error {
+// doJSON выполняет запрос и декодирует ответ, логируя исход. В лог идут только
+// host и path (без query) — у TMDB api_key передаётся query-параметром, его
+// нельзя светить в логах.
+func doJSON(hc *http.Client, log *slog.Logger, req *http.Request, out any) error {
+	if log == nil {
+		log = slog.Default()
+	}
+	start := time.Now()
 	resp, err := hc.Do(req)
 	if err != nil {
+		log.Warn("metadata: request failed",
+			"method", req.Method, "host", req.URL.Host, "path", req.URL.Path,
+			"duration", time.Since(start), "err", err)
 		return fmt.Errorf("metadata: request: %w", err)
 	}
 	defer func() { _ = resp.Body.Close() }()
 
 	raw, err := io.ReadAll(io.LimitReader(resp.Body, maxBody))
 	if err != nil {
+		log.Warn("metadata: read body failed",
+			"host", req.URL.Host, "path", req.URL.Path, "err", err)
 		return fmt.Errorf("metadata: read body: %w", err)
 	}
 	if resp.StatusCode != http.StatusOK {
+		log.Warn("metadata: non-ok status",
+			"method", req.Method, "host", req.URL.Host, "path", req.URL.Path,
+			"status", resp.StatusCode, "duration", time.Since(start))
 		return fmt.Errorf("metadata: status %d: %s", resp.StatusCode, snippet(raw))
 	}
 	if err := json.Unmarshal(raw, out); err != nil {
+		log.Warn("metadata: decode failed",
+			"host", req.URL.Host, "path", req.URL.Path, "err", err)
 		return fmt.Errorf("metadata: decode: %w (body: %s)", err, snippet(raw))
 	}
+	log.Debug("metadata: request ok",
+		"method", req.Method, "host", req.URL.Host, "path", req.URL.Path,
+		"duration", time.Since(start))
 	return nil
 }