| 63 | } |
| 64 | |
| 65 | func (w *WriteRequest) Sign(ctx context.Context) (string, error) { |
| 66 | u, err := users.TenantID(ctx) |
| 67 | if err != nil { |
| 68 | return "", err |
| 69 | } |
| 70 | |
| 71 | s := signerPool.Get().(*signer) |
| 72 | defer func() { |
| 73 | s.Reset() |
| 74 | signerPool.Put(s) |
| 75 | }() |
| 76 | s.WriteString(u) |
| 77 | |
| 78 | for _, md := range w.Metadata { |
| 79 | s.WriteString(strconv.Itoa(int(md.Type))) |
| 80 | s.WriteString(md.MetricFamilyName) |
| 81 | s.WriteString(md.Help) |
| 82 | s.WriteString(md.Unit) |
| 83 | } |
| 84 | |
| 85 | for _, ts := range w.Timeseries { |
| 86 | for _, lbl := range ts.Labels { |
| 87 | s.WriteString(lbl.Name) |
| 88 | s.WriteString(lbl.Value) |
| 89 | } |
| 90 | |
| 91 | for _, ex := range ts.Exemplars { |
| 92 | for _, lbl := range ex.Labels { |
| 93 | s.WriteString(lbl.Name) |
| 94 | s.WriteString(lbl.Value) |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | return fmt.Sprintf("%v/%v", signVersion, s.Sum64()), nil |
| 100 | } |