[processor/groupbyattrs] move from OpenCensus to OpenTelemetry (open-…

…telemetry#30764)

Fixes open-telemetry#30763

---------

Signed-off-by: Alex Boten <[email protected]>

.chloggen/codeboten_rm-groupbyattrs-census.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: groupbyattrsprocessor
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: move metrics from OpenCensus to OpenTelemetry
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [30763]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

processor/filterprocessor/telemetry_test.go

@@ -12,16 +12,16 @@ import (
 	"go.opentelemetry.io/collector/processor"
 	"go.opentelemetry.io/collector/processor/processortest"
 	"go.opentelemetry.io/otel/attribute"
-	sdkmetric "go.opentelemetry.io/otel/sdk/metric"
+	"go.opentelemetry.io/otel/sdk/metric"
 	"go.opentelemetry.io/otel/sdk/metric/metricdata"
 	"go.opentelemetry.io/otel/sdk/metric/metricdata/metricdatatest"
 
 	"github.com/open-telemetry/opentelemetry-collector-contrib/processor/filterprocessor/internal/metadata"
 )
 
 type testTelemetry struct {
-	reader        *sdkmetric.ManualReader
-	meterProvider *sdkmetric.MeterProvider
+	reader        *metric.ManualReader
+	meterProvider *metric.MeterProvider
 }
 
 type expectedMetrics struct {
@@ -40,10 +40,10 @@ func telemetryTest(t *testing.T, name string, testFunc func(t *testing.T, tel te
 }
 
 func setupTelemetry() testTelemetry {
-	reader := sdkmetric.NewManualReader()
+	reader := metric.NewManualReader()
 	return testTelemetry{
 		reader:        reader,
-		meterProvider: sdkmetric.NewMeterProvider(sdkmetric.WithReader(reader)),
+		meterProvider: metric.NewMeterProvider(metric.WithReader(reader)),
 	}
 }
 

processor/groupbyattrsprocessor/factory.go

@@ -5,9 +5,7 @@ package groupbyattrsprocessor // import "github.com/open-telemetry/opentelemetry
 
 import (
 	"context"
-	"sync"
 
-	"go.opencensus.io/stats/view"
 	"go.opentelemetry.io/collector/component"
 	"go.opentelemetry.io/collector/consumer"
 	"go.opentelemetry.io/collector/processor"
@@ -21,15 +19,8 @@ var (
 	consumerCapabilities = consumer.Capabilities{MutatesData: true}
 )
 
-var once sync.Once
-
 // NewFactory returns a new factory for the Filter processor.
 func NewFactory() processor.Factory {
-	once.Do(func() {
-		// TODO: as with other -contrib factories registering metrics, this is causing the error being ignored
-		_ = view.Register(metricViews()...)
-	})
-
 	return processor.NewFactory(
 		metadata.Type,
 		createDefaultConfig,
@@ -45,23 +36,27 @@ func createDefaultConfig() component.Config {
 	}
 }
 
-func createGroupByAttrsProcessor(logger *zap.Logger, attributes []string) *groupByAttrsProcessor {
+func createGroupByAttrsProcessor(set processor.CreateSettings, attributes []string) (*groupByAttrsProcessor, error) {
 	var nonEmptyAttributes []string
 	presentAttributes := make(map[string]struct{})
 
 	for _, str := range attributes {
 		if str != "" {
 			_, isPresent := presentAttributes[str]
 			if isPresent {
-				logger.Warn("A grouping key is already present", zap.String("key", str))
+				set.Logger.Warn("A grouping key is already present", zap.String("key", str))
 			} else {
 				nonEmptyAttributes = append(nonEmptyAttributes, str)
 				presentAttributes[str] = struct{}{}
 			}
 		}
 	}
 
-	return &groupByAttrsProcessor{logger: logger, groupByKeys: nonEmptyAttributes}
+	it, err := newProcessorTelemetry(set.TelemetrySettings)
+	if err != nil {
+		return nil, err
+	}
+	return &groupByAttrsProcessor{logger: set.Logger, groupByKeys: nonEmptyAttributes, internalTelemetry: it}, nil
 }
 
 // createTracesProcessor creates a trace processor based on this config.
@@ -72,7 +67,10 @@ func createTracesProcessor(
 	nextConsumer consumer.Traces) (processor.Traces, error) {
 
 	oCfg := cfg.(*Config)
-	gap := createGroupByAttrsProcessor(set.Logger, oCfg.GroupByKeys)
+	gap, err := createGroupByAttrsProcessor(set, oCfg.GroupByKeys)
+	if err != nil {
+		return nil, err
+	}
 
 	return processorhelper.NewTracesProcessor(
 		ctx,
@@ -91,7 +89,10 @@ func createLogsProcessor(
 	nextConsumer consumer.Logs) (processor.Logs, error) {
 
 	oCfg := cfg.(*Config)
-	gap := createGroupByAttrsProcessor(set.Logger, oCfg.GroupByKeys)
+	gap, err := createGroupByAttrsProcessor(set, oCfg.GroupByKeys)
+	if err != nil {
+		return nil, err
+	}
 
 	return processorhelper.NewLogsProcessor(
 		ctx,
@@ -110,7 +111,10 @@ func createMetricsProcessor(
 	nextConsumer consumer.Metrics) (processor.Metrics, error) {
 
 	oCfg := cfg.(*Config)
-	gap := createGroupByAttrsProcessor(set.Logger, oCfg.GroupByKeys)
+	gap, err := createGroupByAttrsProcessor(set, oCfg.GroupByKeys)
+	if err != nil {
+		return nil, err
+	}
 
 	return processorhelper.NewMetricsProcessor(
 		ctx,

processor/groupbyattrsprocessor/factory_test.go

@@ -8,9 +8,9 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 	"go.opentelemetry.io/collector/consumer/consumertest"
 	"go.opentelemetry.io/collector/processor/processortest"
-	"go.uber.org/zap"
 )
 
 func TestDefaultConfiguration(t *testing.T) {
@@ -41,12 +41,14 @@ func TestCreateTestProcessor(t *testing.T) {
 
 func TestNoKeys(t *testing.T) {
 	// This is allowed since can be used for compacting data
-	gap := createGroupByAttrsProcessor(zap.NewNop(), []string{})
+	gap, err := createGroupByAttrsProcessor(processortest.NewNopCreateSettings(), []string{})
+	require.NoError(t, err)
 	assert.NotNil(t, gap)
 }
 
 func TestDuplicateKeys(t *testing.T) {
-	gbap := createGroupByAttrsProcessor(zap.NewNop(), []string{"foo", "foo", ""})
+	gbap, err := createGroupByAttrsProcessor(processortest.NewNopCreateSettings(), []string{"foo", "foo", ""})
+	require.NoError(t, err)
 	assert.NotNil(t, gbap)
 	assert.EqualValues(t, []string{"foo"}, gbap.groupByKeys)
 }

processor/groupbyattrsprocessor/go.mod

@@ -6,13 +6,14 @@ require (
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/coreinternal v0.93.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatautil v0.93.0
 	github.com/stretchr/testify v1.8.4
-	go.opencensus.io v0.24.0
 	go.opentelemetry.io/collector/component v0.93.1-0.20240130182548-89388addcc7f
 	go.opentelemetry.io/collector/confmap v0.93.1-0.20240130182548-89388addcc7f
 	go.opentelemetry.io/collector/consumer v0.93.1-0.20240130182548-89388addcc7f
 	go.opentelemetry.io/collector/pdata v1.0.2-0.20240130181942-9c7177496fd5
 	go.opentelemetry.io/collector/processor v0.93.1-0.20240130182548-89388addcc7f
+	go.opentelemetry.io/otel v1.22.0
 	go.opentelemetry.io/otel/metric v1.22.0
+	go.opentelemetry.io/otel/sdk/metric v1.22.0
 	go.opentelemetry.io/otel/trace v1.22.0
 	go.uber.org/goleak v1.3.0
 	go.uber.org/zap v1.26.0
@@ -42,10 +43,8 @@ require (
 	github.com/prometheus/procfs v0.12.0 // indirect
 	go.opentelemetry.io/collector v0.93.1-0.20240130182548-89388addcc7f // indirect
 	go.opentelemetry.io/collector/config/configtelemetry v0.93.1-0.20240130182548-89388addcc7f // indirect
-	go.opentelemetry.io/otel v1.22.0 // indirect
 	go.opentelemetry.io/otel/exporters/prometheus v0.45.0 // indirect
 	go.opentelemetry.io/otel/sdk v1.22.0 // indirect
-	go.opentelemetry.io/otel/sdk/metric v1.22.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/net v0.20.0 // indirect
 	golang.org/x/sys v0.16.0 // indirect