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opentelemetry-go/exporter/metric/internal/statsd/labels_test.go
Joshua MacDonald b9706b20f9
Dogstatsd metrics exporter (#326)
* Add MetricAggregator.Merge() implementations

* Update from feedback

* Type

* Ckpt

* Ckpt

* Add push controller

* Ckpt

* Add aggregator interfaces, stdout encoder

* Modify basic main.go

* Main is working

* Batch stdout output

* Sum udpate

* Rename stdout

* Add stateless/stateful Batcher options

* Undo a for-loop in the example, remove a done TODO

* Update imports

* Add note

* Rename defaultkeys

* Support variable label encoder to speed OpenMetrics/Statsd export

* Lint

* Checkpoint

* Checkpoint

* Doc

* Precommit/lint

* Simplify Aggregator API

* Record->Identifier

* Remove export.Record a.k.a. Identifier

* Checkpoint

* Propagate errors to the SDK, remove a bunch of 'TODO warn'

* Checkpoint

* Introduce export.Labels

* Comments in export/metric.go

* Comment

* More merge

* More doc

* Complete example

* Lint fixes

* Add a testable example

* Lint

* Dogstats

* Let Export return an error

* Checkpoint

* add a basic stdout exporter test

* Add measure test; fix aggregator APIs

* Use JSON numbers, not strings

* Test stdout exporter error

* Add a test for the call to RangeTest

* Add error handler API to improve correctness test; return errors from RecordOne

* Undo the previous -- do not expose errors

* Add simple selector variations, test

* Repair examples

* Test push controller error handling

* Add SDK label encoder tests

* Add a defaultkeys batcher test

* Add an ungrouped batcher test

* Lint new tests

* Respond to krnowak's feedback

* Checkpoint

* Funciontal example using unixgram

* Tidy the example

* Add a packet-split test

* More tests

* Undo comment

* Use concrete receivers for export records and labels, since the constructors return structs not pointers

* Bug fix for stateful batchers; clone an aggregator for long term storage

* Remove TODO addressed in #318

* Add errors to all aggregator interfaces

* Handle ErrNoLastValue case in stdout exporter

* Move aggregator API into sdk/export/metric/aggregator

* Update all aggregator exported-method comments

* Document the aggregator APIs

* More aggregator comments

* Add multiple updates to the ungrouped test

* Fixes for feedback from Gustavo and Liz

* Producer->CheckpointSet; add FinishedCollection

* Process takes an export.Record

* ReadCheckpoint->CheckpointSet

* EncodeLabels->Encode

* Format a better inconsistent type error; add more aggregator API tests

* More RangeTest test coverage

* Make benbjohnson/clock a test-only dependency

* Handle ErrNoLastValue in stress_test

* Update comments; use a pipe vs a unix socket in the example test

* Update test

* Spelling

* Typo fix

* Rename DefaultLabelEncoder to NewDefaultLabelEncoder for clarity

* Rename DefaultLabelEncoder to NewDefaultLabelEncoder for clarity

* Test different adapters; add ForceEncode to statsd label encoder
2019-11-21 20:46:05 -08:00

74 lines
2.4 KiB
Go

// Copyright 2019, OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package statsd_test
import (
"testing"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/otel/api/core"
"go.opentelemetry.io/otel/api/key"
"go.opentelemetry.io/otel/exporter/metric/internal/statsd"
export "go.opentelemetry.io/otel/sdk/export/metric"
sdk "go.opentelemetry.io/otel/sdk/metric"
)
var testLabels = []core.KeyValue{
key.New("A").String("B"),
key.New("C").String("D"),
key.New("E").Float64(1.5),
}
func TestLabelSyntax(t *testing.T) {
encoder := statsd.NewLabelEncoder()
require.Equal(t, `|#A:B,C:D,E:1.5`, encoder.Encode(testLabels))
require.Equal(t, `|#A:B`, encoder.Encode([]core.KeyValue{
key.New("A").String("B"),
}))
require.Equal(t, "", encoder.Encode(nil))
}
func TestLabelForceEncode(t *testing.T) {
defaultLabelEncoder := sdk.NewDefaultLabelEncoder()
statsdLabelEncoder := statsd.NewLabelEncoder()
exportLabelsDefault := export.NewLabels(testLabels, defaultLabelEncoder.Encode(testLabels), defaultLabelEncoder)
exportLabelsStatsd := export.NewLabels(testLabels, statsdLabelEncoder.Encode(testLabels), statsdLabelEncoder)
statsdEncoding := exportLabelsStatsd.Encoded()
require.NotEqual(t, statsdEncoding, exportLabelsDefault.Encoded())
forced, repeat := statsdLabelEncoder.ForceEncode(exportLabelsDefault)
require.Equal(t, statsdEncoding, forced)
require.True(t, repeat)
forced, repeat = statsdLabelEncoder.ForceEncode(exportLabelsStatsd)
require.Equal(t, statsdEncoding, forced)
require.False(t, repeat)
// Check that this works for an embedded implementation.
exportLabelsEmbed := export.NewLabels(testLabels, statsdEncoding, struct {
*statsd.LabelEncoder
}{LabelEncoder: statsdLabelEncoder})
forced, repeat = statsdLabelEncoder.ForceEncode(exportLabelsEmbed)
require.Equal(t, statsdEncoding, forced)
require.False(t, repeat)
}