| 1 | // Copyright 2019 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package wire |
| 6 | |
| 7 | import ( |
| 8 | "encoding/json" |
| 9 | "fmt" |
| 10 | ) |
| 11 | |
| 12 | type ExportMetricsServiceRequest struct { |
| 13 | Node *Node `json:"node,omitempty"` |
| 14 | Metrics []*Metric `json:"metrics,omitempty"` |
| 15 | Resource *Resource `json:"resource,omitempty"` |
| 16 | } |
| 17 | |
| 18 | type Metric struct { |
| 19 | MetricDescriptor *MetricDescriptor `json:"metric_descriptor,omitempty"` |
| 20 | Timeseries []*TimeSeries `json:"timeseries,omitempty"` |
| 21 | Resource *Resource `json:"resource,omitempty"` |
| 22 | } |
| 23 | |
| 24 | type MetricDescriptor struct { |
| 25 | Name string `json:"name,omitempty"` |
| 26 | Description string `json:"description,omitempty"` |
| 27 | Unit string `json:"unit,omitempty"` |
| 28 | Type MetricDescriptor_Type `json:"type,omitempty"` |
| 29 | LabelKeys []*LabelKey `json:"label_keys,omitempty"` |
| 30 | } |
| 31 | |
| 32 | type MetricDescriptor_Type int32 |
| 33 | |
| 34 | const ( |
| 35 | MetricDescriptor_UNSPECIFIED MetricDescriptor_Type = 0 |
| 36 | MetricDescriptor_GAUGE_INT64 MetricDescriptor_Type = 1 |
| 37 | MetricDescriptor_GAUGE_DOUBLE MetricDescriptor_Type = 2 |
| 38 | MetricDescriptor_GAUGE_DISTRIBUTION MetricDescriptor_Type = 3 |
| 39 | MetricDescriptor_CUMULATIVE_INT64 MetricDescriptor_Type = 4 |
| 40 | MetricDescriptor_CUMULATIVE_DOUBLE MetricDescriptor_Type = 5 |
| 41 | MetricDescriptor_CUMULATIVE_DISTRIBUTION MetricDescriptor_Type = 6 |
| 42 | MetricDescriptor_SUMMARY MetricDescriptor_Type = 7 |
| 43 | ) |
| 44 | |
| 45 | type LabelKey struct { |
| 46 | Key string `json:"key,omitempty"` |
| 47 | Description string `json:"description,omitempty"` |
| 48 | } |
| 49 | |
| 50 | type TimeSeries struct { |
| 51 | StartTimestamp *Timestamp `json:"start_timestamp,omitempty"` |
| 52 | LabelValues []*LabelValue `json:"label_values,omitempty"` |
| 53 | Points []*Point `json:"points,omitempty"` |
| 54 | } |
| 55 | |
| 56 | type LabelValue struct { |
| 57 | Value string `json:"value,omitempty"` |
| 58 | HasValue bool `json:"has_value,omitempty"` |
| 59 | } |
| 60 | |
| 61 | type Point struct { |
| 62 | Timestamp *Timestamp `json:"timestamp,omitempty"` |
| 63 | Value PointValue `json:"value,omitempty"` |
| 64 | } |
| 65 | |
| 66 | type PointInt64Value struct { |
| 67 | Int64Value int64 `json:"int64Value,omitempty"` |
| 68 | } |
| 69 | |
| 70 | // MarshalJSON creates JSON formatted the same way as jsonpb so that the |
| 71 | // OpenCensus service can correctly determine the underlying value type. |
| 72 | // This custom MarshalJSON exists because, |
| 73 | // by default *Point is JSON marshalled as: |
| 74 | // |
| 75 | // {"value": {"int64Value": 1}} |
| 76 | // |
| 77 | // but it should be marshalled as: |
| 78 | // |
| 79 | // {"int64Value": 1} |
| 80 | func (p *Point) MarshalJSON() ([]byte, error) { |
| 81 | if p == nil { |
| 82 | return []byte("null"), nil |
| 83 | } |
| 84 | |
| 85 | switch d := p.Value.(type) { |
| 86 | case PointInt64Value: |
| 87 | return json.Marshal(&struct { |
| 88 | Timestamp *Timestamp `json:"timestamp,omitempty"` |
| 89 | Value int64 `json:"int64Value,omitempty"` |
| 90 | }{ |
| 91 | Timestamp: p.Timestamp, |
| 92 | Value: d.Int64Value, |
| 93 | }) |
| 94 | case PointDoubleValue: |
| 95 | return json.Marshal(&struct { |
| 96 | Timestamp *Timestamp `json:"timestamp,omitempty"` |
| 97 | Value float64 `json:"doubleValue,omitempty"` |
| 98 | }{ |
| 99 | Timestamp: p.Timestamp, |
| 100 | Value: d.DoubleValue, |
| 101 | }) |
| 102 | case PointDistributionValue: |
| 103 | return json.Marshal(&struct { |
| 104 | Timestamp *Timestamp `json:"timestamp,omitempty"` |
| 105 | Value *DistributionValue `json:"distributionValue,omitempty"` |
| 106 | }{ |
| 107 | Timestamp: p.Timestamp, |
| 108 | Value: d.DistributionValue, |
| 109 | }) |
| 110 | default: |
| 111 | return nil, fmt.Errorf("unknown point type %T", p.Value) |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | type PointDoubleValue struct { |
| 116 | DoubleValue float64 `json:"doubleValue,omitempty"` |
| 117 | } |
| 118 | |
| 119 | type PointDistributionValue struct { |
| 120 | DistributionValue *DistributionValue `json:"distributionValue,omitempty"` |
| 121 | } |
| 122 | |
| 123 | type PointSummaryValue struct { |
| 124 | SummaryValue *SummaryValue `json:"summaryValue,omitempty"` |
| 125 | } |
| 126 | |
| 127 | type PointValue interface { |
| 128 | labelPointValue() |
| 129 | } |
| 130 | |
| 131 | func (PointInt64Value) labelPointValue() {} |
| 132 | func (PointDoubleValue) labelPointValue() {} |
| 133 | func (PointDistributionValue) labelPointValue() {} |
| 134 | func (PointSummaryValue) labelPointValue() {} |
| 135 | |
| 136 | type DistributionValue struct { |
| 137 | Count int64 `json:"count,omitempty"` |
| 138 | Sum float64 `json:"sum,omitempty"` |
| 139 | SumOfSquaredDeviation float64 `json:"sum_of_squared_deviation,omitempty"` |
| 140 | BucketOptions BucketOptions `json:"bucket_options,omitempty"` |
| 141 | Buckets []*Bucket `json:"buckets,omitempty"` |
| 142 | } |
| 143 | |
| 144 | type BucketOptionsExplicit struct { |
| 145 | Bounds []float64 `json:"bounds,omitempty"` |
| 146 | } |
| 147 | |
| 148 | type BucketOptions interface { |
| 149 | labelBucketOptions() |
| 150 | } |
| 151 | |
| 152 | func (*BucketOptionsExplicit) labelBucketOptions() {} |
| 153 | |
| 154 | var _ BucketOptions = (*BucketOptionsExplicit)(nil) |
| 155 | var _ json.Marshaler = (*BucketOptionsExplicit)(nil) |
| 156 | |
| 157 | // Declared for the purpose of custom JSON marshaling without cycles. |
| 158 | type bucketOptionsExplicitAlias BucketOptionsExplicit |
| 159 | |
| 160 | // MarshalJSON creates JSON formatted the same way as jsonpb so that the |
| 161 | // OpenCensus service can correctly determine the underlying value type. |
| 162 | // This custom MarshalJSON exists because, |
| 163 | // by default BucketOptionsExplicit is JSON marshalled as: |
| 164 | // |
| 165 | // {"bounds":[1,2,3]} |
| 166 | // |
| 167 | // but it should be marshalled as: |
| 168 | // |
| 169 | // {"explicit":{"bounds":[1,2,3]}} |
| 170 | func (be *BucketOptionsExplicit) MarshalJSON() ([]byte, error) { |
| 171 | return json.Marshal(&struct { |
| 172 | Explicit *bucketOptionsExplicitAlias `json:"explicit,omitempty"` |
| 173 | }{ |
| 174 | Explicit: (*bucketOptionsExplicitAlias)(be), |
| 175 | }) |
| 176 | } |
| 177 | |
| 178 | type Bucket struct { |
| 179 | Count int64 `json:"count,omitempty"` |
| 180 | Exemplar *Exemplar `json:"exemplar,omitempty"` |
| 181 | } |
| 182 | |
| 183 | type Exemplar struct { |
| 184 | Value float64 `json:"value,omitempty"` |
| 185 | Timestamp *Timestamp `json:"timestamp,omitempty"` |
| 186 | Attachments map[string]string `json:"attachments,omitempty"` |
| 187 | } |
| 188 | |
| 189 | type SummaryValue struct { |
| 190 | Count *Int64Value `json:"count,omitempty"` |
| 191 | Sum *DoubleValue `json:"sum,omitempty"` |
| 192 | Snapshot *Snapshot `json:"snapshot,omitempty"` |
| 193 | } |
| 194 | |
| 195 | type Snapshot struct { |
| 196 | Count *Int64Value `json:"count,omitempty"` |
| 197 | Sum *DoubleValue `json:"sum,omitempty"` |
| 198 | PercentileValues []*SnapshotValueAtPercentile `json:"percentile_values,omitempty"` |
| 199 | } |
| 200 | |
| 201 | type SnapshotValueAtPercentile struct { |
| 202 | Percentile float64 `json:"percentile,omitempty"` |
| 203 | Value float64 `json:"value,omitempty"` |
| 204 | } |
| 205 |
Members