mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-14 10:13:10 +02:00
e06c9da916
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
174 lines
4.3 KiB
Go
174 lines
4.3 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package aggregatortest
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import (
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"context"
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"math/rand"
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"os"
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"sort"
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"testing"
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"unsafe"
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"go.opentelemetry.io/otel/api/metric"
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ottest "go.opentelemetry.io/otel/internal/testing"
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export "go.opentelemetry.io/otel/sdk/export/metric"
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"go.opentelemetry.io/otel/sdk/metric/aggregator"
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)
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const Magnitude = 1000
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type Profile struct {
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NumberKind metric.NumberKind
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Random func(sign int) metric.Number
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}
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func newProfiles() []Profile {
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rnd := rand.New(rand.NewSource(rand.Int63()))
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return []Profile{
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{
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NumberKind: metric.Int64NumberKind,
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Random: func(sign int) metric.Number {
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return metric.NewInt64Number(int64(sign) * int64(rnd.Intn(Magnitude+1)))
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},
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},
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{
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NumberKind: metric.Float64NumberKind,
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Random: func(sign int) metric.Number {
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return metric.NewFloat64Number(float64(sign) * rnd.Float64() * Magnitude)
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},
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},
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}
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}
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func NewAggregatorTest(mkind metric.Kind, nkind metric.NumberKind) *metric.Descriptor {
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desc := metric.NewDescriptor("test.name", mkind, nkind)
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return &desc
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}
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func RunProfiles(t *testing.T, f func(*testing.T, Profile)) {
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for _, profile := range newProfiles() {
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t.Run(profile.NumberKind.String(), func(t *testing.T) {
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f(t, profile)
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})
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}
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}
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// Ensure local struct alignment prior to running tests.
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func TestMain(m *testing.M) {
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fields := []ottest.FieldOffset{
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{
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Name: "Numbers.numbers",
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Offset: unsafe.Offsetof(Numbers{}.numbers),
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},
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}
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if !ottest.Aligned8Byte(fields, os.Stderr) {
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os.Exit(1)
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}
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os.Exit(m.Run())
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}
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// TODO: Expose Numbers in api/metric for sorting support
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type Numbers struct {
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// numbers has to be aligned for 64-bit atomic operations.
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numbers []metric.Number
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kind metric.NumberKind
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}
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func NewNumbers(kind metric.NumberKind) Numbers {
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return Numbers{
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kind: kind,
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}
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}
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func (n *Numbers) Append(v metric.Number) {
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n.numbers = append(n.numbers, v)
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}
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func (n *Numbers) Sort() {
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sort.Sort(n)
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}
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func (n *Numbers) Less(i, j int) bool {
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return n.numbers[i].CompareNumber(n.kind, n.numbers[j]) < 0
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}
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func (n *Numbers) Len() int {
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return len(n.numbers)
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}
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func (n *Numbers) Swap(i, j int) {
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n.numbers[i], n.numbers[j] = n.numbers[j], n.numbers[i]
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}
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func (n *Numbers) Sum() metric.Number {
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var sum metric.Number
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for _, num := range n.numbers {
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sum.AddNumber(n.kind, num)
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}
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return sum
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}
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func (n *Numbers) Count() int64 {
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return int64(len(n.numbers))
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}
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func (n *Numbers) Min() metric.Number {
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return n.numbers[0]
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}
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func (n *Numbers) Max() metric.Number {
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return n.numbers[len(n.numbers)-1]
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}
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// Median() is an alias for Quantile(0.5).
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func (n *Numbers) Median() metric.Number {
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// Note that len(n.numbers) is 1 greater than the max element
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// index, so dividing by two rounds up. This gives the
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// intended definition for Quantile() in tests, which is to
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// return the smallest element that is at or above the
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// specified quantile.
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return n.numbers[len(n.numbers)/2]
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}
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func (n *Numbers) Points() []metric.Number {
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return n.numbers
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}
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// Performs the same range test the SDK does on behalf of the aggregator.
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func CheckedUpdate(t *testing.T, agg export.Aggregator, number metric.Number, descriptor *metric.Descriptor) {
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ctx := context.Background()
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// Note: Aggregator tests are written assuming that the SDK
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// has performed the RangeTest. Therefore we skip errors that
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// would have been detected by the RangeTest.
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err := aggregator.RangeTest(number, descriptor)
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if err != nil {
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return
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}
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if err := agg.Update(ctx, number, descriptor); err != nil {
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t.Error("Unexpected Update failure", err)
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}
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}
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func CheckedMerge(t *testing.T, aggInto, aggFrom export.Aggregator, descriptor *metric.Descriptor) {
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if err := aggInto.Merge(aggFrom, descriptor); err != nil {
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t.Error("Unexpected Merge failure", err)
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}
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}
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