| 30 | } |
| 31 | |
| 32 | func unmarshalNode(data []byte) (logicalplan.Node, error) { |
| 33 | t := jsonNode{} |
| 34 | if err := json.Unmarshal(data, &t); err != nil { |
| 35 | return nil, err |
| 36 | } |
| 37 | |
| 38 | switch t.Type { |
| 39 | case logicalplan.VectorSelectorNode: |
| 40 | v := &logicalplan.VectorSelector{} |
| 41 | if err := json.Unmarshal(t.Data, v); err != nil { |
| 42 | return nil, err |
| 43 | } |
| 44 | var err error |
| 45 | for i, m := range v.LabelMatchers { |
| 46 | v.LabelMatchers[i], err = labels.NewMatcher(m.Type, m.Name, m.Value) |
| 47 | if err != nil { |
| 48 | return nil, err |
| 49 | } |
| 50 | } |
| 51 | return v, nil |
| 52 | case logicalplan.MatrixSelectorNode: |
| 53 | m := &logicalplan.MatrixSelector{} |
| 54 | if err := json.Unmarshal(t.Data, m); err != nil { |
| 55 | return nil, err |
| 56 | } |
| 57 | vs, err := unmarshalNode(t.Children[0]) |
| 58 | if err != nil { |
| 59 | return nil, err |
| 60 | } |
| 61 | m.VectorSelector = vs.(*logicalplan.VectorSelector) |
| 62 | return m, nil |
| 63 | case logicalplan.AggregationNode: |
| 64 | a := &logicalplan.Aggregation{} |
| 65 | if err := json.Unmarshal(t.Data, a); err != nil { |
| 66 | return nil, err |
| 67 | } |
| 68 | var err error |
| 69 | a.Expr, err = unmarshalNode(t.Children[0]) |
| 70 | if err != nil { |
| 71 | return nil, err |
| 72 | } |
| 73 | if len(t.Children) > 1 { |
| 74 | a.Param, err = unmarshalNode(t.Children[1]) |
| 75 | if err != nil { |
| 76 | return nil, err |
| 77 | } |
| 78 | } |
| 79 | return a, nil |
| 80 | case logicalplan.BinaryNode: |
| 81 | b := &logicalplan.Binary{} |
| 82 | if err := json.Unmarshal(t.Data, b); err != nil { |
| 83 | return nil, err |
| 84 | } |
| 85 | var err error |
| 86 | b.LHS, err = unmarshalNode(t.Children[0]) |
| 87 | if err != nil { |
| 88 | return nil, err |
| 89 | } |