minio connection log

pkg/ai_summarizer/minio_errors.go

@@ -1,7 +1,10 @@
 package ai_summarizer
 
 import (
+	"context"
 	"errors"
+	"fmt"
+	"net"
 	"net/http"
 	"strings"
 
@@ -29,3 +32,55 @@ func isMinioNotFound(err error) bool {
 		strings.Contains(msg, "nosuchkey") ||
 		strings.Contains(msg, "not found")
 }
+
+// isMinioConnectionError reports whether err indicates MinIO is unreachable.
+func isMinioConnectionError(err error) bool {
+	if err == nil {
+		return false
+	}
+	if errors.Is(err, ErrMinIOUnavailable) {
+		return true
+	}
+	if errors.Is(err, context.DeadlineExceeded) || errors.Is(err, context.Canceled) {
+		return true
+	}
+	var netErr net.Error
+	if errors.As(err, &netErr) && netErr.Timeout() {
+		return true
+	}
+	var opErr *net.OpError
+	if errors.As(err, &opErr) {
+		return true
+	}
+	msg := strings.ToLower(err.Error())
+	connectionHints := []string{
+		"connection refused",
+		"connection reset",
+		"no such host",
+		"dial tcp",
+		"dial udp",
+		"i/o timeout",
+		"network is unreachable",
+		"broken pipe",
+		"tls handshake",
+		"server gave http response to https client",
+		"eof",
+	}
+	for _, hint := range connectionHints {
+		if strings.Contains(msg, hint) {
+			return true
+		}
+	}
+	return false
+}
+
+// wrapMinIOError attaches ErrMinIOUnavailable when the root cause is connectivity.
+func wrapMinIOError(err error) error {
+	if err == nil || isMinioNotFound(err) {
+		return err
+	}
+	if isMinioConnectionError(err) {
+		return fmt.Errorf("%w: %v", ErrMinIOUnavailable, err)
+	}
+	return err
+}