| 1 | // Copyright 2020 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 ocagent_test |
| 6 | |
| 7 | import ( |
| 8 | "context" |
| 9 | "errors" |
| 10 | "testing" |
| 11 | |
| 12 | "golang.org/x/tools/internal/event" |
| 13 | "golang.org/x/tools/internal/event/keys" |
| 14 | ) |
| 15 | |
| 16 | func TestEncodeMetric(t *testing.T) { |
| 17 | exporter := registerExporter() |
| 18 | const prefix = testNodeStr + ` |
| 19 | "metrics":[` |
| 20 | const suffix = `]}` |
| 21 | tests := []struct { |
| 22 | name string |
| 23 | run func(ctx context.Context) |
| 24 | want string |
| 25 | }{ |
| 26 | { |
| 27 | name: "HistogramFloat64, HistogramInt64", |
| 28 | run: func(ctx context.Context) { |
| 29 | ctx = event.Label(ctx, keyMethod.Of("godoc.ServeHTTP")) |
| 30 | event.Metric(ctx, latencyMs.Of(96.58)) |
| 31 | ctx = event.Label(ctx, keys.Err.Of(errors.New("panic: fatal signal"))) |
| 32 | event.Metric(ctx, bytesIn.Of(97e2)) |
| 33 | }, |
| 34 | want: prefix + ` |
| 35 | { |
| 36 | "metric_descriptor": { |
| 37 | "name": "latency_ms", |
| 38 | "description": "The latency of calls in milliseconds", |
| 39 | "type": 6, |
| 40 | "label_keys": [ |
| 41 | { |
| 42 | "key": "method" |
| 43 | }, |
| 44 | { |
| 45 | "key": "route" |
| 46 | } |
| 47 | ] |
| 48 | }, |
| 49 | "timeseries": [ |
| 50 | { |
| 51 | "start_timestamp": "1970-01-01T00:00:00Z", |
| 52 | "points": [ |
| 53 | { |
| 54 | "timestamp": "1970-01-01T00:00:40Z", |
| 55 | "distributionValue": { |
| 56 | "count": 1, |
| 57 | "sum": 96.58, |
| 58 | "bucket_options": { |
| 59 | "explicit": { |
| 60 | "bounds": [ |
| 61 | 0, |
| 62 | 5, |
| 63 | 10, |
| 64 | 25, |
| 65 | 50 |
| 66 | ] |
| 67 | } |
| 68 | }, |
| 69 | "buckets": [ |
| 70 | {}, |
| 71 | {}, |
| 72 | {}, |
| 73 | {}, |
| 74 | {} |
| 75 | ] |
| 76 | } |
| 77 | } |
| 78 | ] |
| 79 | } |
| 80 | ] |
| 81 | }, |
| 82 | { |
| 83 | "metric_descriptor": { |
| 84 | "name": "latency_ms", |
| 85 | "description": "The latency of calls in milliseconds", |
| 86 | "type": 6, |
| 87 | "label_keys": [ |
| 88 | { |
| 89 | "key": "method" |
| 90 | }, |
| 91 | { |
| 92 | "key": "route" |
| 93 | } |
| 94 | ] |
| 95 | }, |
| 96 | "timeseries": [ |
| 97 | { |
| 98 | "start_timestamp": "1970-01-01T00:00:00Z", |
| 99 | "points": [ |
| 100 | { |
| 101 | "timestamp": "1970-01-01T00:00:40Z", |
| 102 | "distributionValue": { |
| 103 | "count": 1, |
| 104 | "sum": 9700, |
| 105 | "bucket_options": { |
| 106 | "explicit": { |
| 107 | "bounds": [ |
| 108 | 0, |
| 109 | 10, |
| 110 | 50, |
| 111 | 100, |
| 112 | 500, |
| 113 | 1000, |
| 114 | 2000 |
| 115 | ] |
| 116 | } |
| 117 | }, |
| 118 | "buckets": [ |
| 119 | {}, |
| 120 | {}, |
| 121 | {}, |
| 122 | {}, |
| 123 | {}, |
| 124 | {}, |
| 125 | {} |
| 126 | ] |
| 127 | } |
| 128 | } |
| 129 | ] |
| 130 | } |
| 131 | ] |
| 132 | }` + suffix, |
| 133 | }, |
| 134 | } |
| 135 | |
| 136 | ctx := context.TODO() |
| 137 | for _, tt := range tests { |
| 138 | t.Run(tt.name, func(t *testing.T) { |
| 139 | tt.run(ctx) |
| 140 | got := exporter.Output("/v1/metrics") |
| 141 | checkJSON(t, got, []byte(tt.want)) |
| 142 | }) |
| 143 | } |
| 144 | } |
| 145 |
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