Prepare for v0.7.0 release of contrib (#103)

* prepare for release_v0.7.0

* Upgrade metric exporter code to otel-v0.7.0 API

* Update exporters/metric/dogstatsd/dogstatsd_test.go

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

exporters/metric/datadog/datadog.go

@@ -10,7 +10,7 @@ import (
 	"go.opentelemetry.io/otel/api/label"
 	"go.opentelemetry.io/otel/api/metric"
 	export "go.opentelemetry.io/otel/sdk/export/metric"
-	"go.opentelemetry.io/otel/sdk/export/metric/aggregator"
+	"go.opentelemetry.io/otel/sdk/export/metric/aggregation"
 )
 
 const (
@@ -63,17 +63,26 @@ type Exporter struct {
 	client *statsd.Client
 }
 
+var (
+	_ export.Exporter = &Exporter{}
+)
+
 const rate = 1
 
 func defaultFormatter(namespace, name string) string {
 	return name
 }
 
+// ExportKindFor returns export.DeltaExporter for statsd-derived exporters
+func (e *Exporter) ExportKindFor(*metric.Descriptor, aggregation.Kind) export.ExportKind {
+	return export.DeltaExporter
+}
+
 func (e *Exporter) Export(ctx context.Context, cs export.CheckpointSet) error {
-	return cs.ForEach(func(r export.Record) error {
+	return cs.ForEach(e, func(r export.Record) error {
 		// TODO: Use the Resource() method
-		agg := r.Aggregator()
-		name := e.sanitizeMetricName(r.Descriptor().LibraryName(), r.Descriptor().Name())
+		agg := r.Aggregation()
+		name := e.sanitizeMetricName(r.Descriptor().InstrumentationName(), r.Descriptor().Name())
 		itr := label.NewMergeIterator(r.Labels(), r.Resource().LabelSet())
 		tags := append([]string{}, e.opts.Tags...)
 		for itr.Next() {
@@ -82,7 +91,7 @@ func (e *Exporter) Export(ctx context.Context, cs export.CheckpointSet) error {
 			tags = append(tags, tag)
 		}
 		switch agg := agg.(type) {
-		case aggregator.Points:
+		case aggregation.Points:
 			numbers, err := agg.Points()
 			if err != nil {
 				return fmt.Errorf("error getting Points for %s: %w", name, err)
@@ -96,7 +105,7 @@ func (e *Exporter) Export(ctx context.Context, cs export.CheckpointSet) error {
 					return fmt.Errorf("error submitting %s point: %w", name, err)
 				}
 			}
-		case aggregator.MinMaxSumCount:
+		case aggregation.MinMaxSumCount:
 			type record struct {
 				name string
 				f    func() (metric.Number, error)
@@ -111,7 +120,7 @@ func (e *Exporter) Export(ctx context.Context, cs export.CheckpointSet) error {
 					f:    agg.Max,
 				},
 			}
-			if dist, ok := agg.(aggregator.Distribution); ok {
+			if dist, ok := agg.(aggregation.Distribution); ok {
 				recs = append(recs,
 					record{name: name + ".median", f: func() (metric.Number, error) {
 						return dist.Quantile(0.5)
@@ -130,15 +139,15 @@ func (e *Exporter) Export(ctx context.Context, cs export.CheckpointSet) error {
 					return fmt.Errorf("error submitting %s point: %w", name, err)
 				}
 			}
-		case aggregator.Sum:
+		case aggregation.Sum:
 			val, err := agg.Sum()
 			if err != nil {
 				return fmt.Errorf("error getting Sum value for %s: %w", name, err)
 			}
 			if err := e.client.Count(name, val.AsInt64(), tags, rate); err != nil {
 				return fmt.Errorf("error submitting %s point: %w", name, err)
 			}
-		case aggregator.LastValue:
+		case aggregation.LastValue:
 			val, _, err := agg.LastValue()
 			if err != nil {
 				return fmt.Errorf("error getting LastValue for %s: %w", name, err)
@@ -177,8 +186,6 @@ func metricValue(kind metric.NumberKind, number metric.Number) float64 {
 		return number.AsFloat64()
 	case metric.Int64NumberKind:
 		return float64(number.AsInt64())
-	case metric.Uint64NumberKind:
-		return float64(number.AsUint64())
 	}
 	return float64(number)
 }

exporters/metric/datadog/example_test.go

@@ -16,7 +16,7 @@ import (
 	"go.opentelemetry.io/otel/api/kv"
 	"go.opentelemetry.io/otel/api/metric"
 	"go.opentelemetry.io/otel/sdk/metric/controller/push"
-	integrator "go.opentelemetry.io/otel/sdk/metric/integrator/simple"
+	"go.opentelemetry.io/otel/sdk/metric/processor/basic"
 	"go.opentelemetry.io/otel/sdk/metric/selector/simple"
 )
 
@@ -26,7 +26,6 @@ type TestUDPServer struct {
 
 func ExampleExporter() {
 	selector := simple.NewWithSketchDistribution(ddsketch.NewDefaultConfig())
-	myIntegrator := integrator.New(selector, false)
 	exp, err := datadog.NewExporter(datadog.Options{
 		Tags:          []string{"env:dev"},
 		StatsDOptions: []statsd.Option{statsd.WithoutTelemetry()},
@@ -42,7 +41,8 @@ func ExampleExporter() {
 
 	go func() {
 		defer exp.Close()
-		pusher := push.New(myIntegrator, exp, push.WithPeriod(time.Second*60))
+		processor := basic.New(selector, exp)
+		pusher := push.New(processor, exp, push.WithPeriod(time.Second*10))
 		defer pusher.Stop()
 		pusher.Start()
 		global.SetMeterProvider(pusher.Provider())

exporters/metric/datadog/go.mod

@@ -5,5 +5,5 @@ go 1.14
 require (
 	github.com/DataDog/datadog-go v3.7.2+incompatible
 	github.com/DataDog/sketches-go v0.0.0-20190923095040-43f19ad77ff7
-	go.opentelemetry.io/otel v0.6.0
+	go.opentelemetry.io/otel v0.7.0
 )

exporters/metric/datadog/go.sum

@@ -4,23 +4,37 @@ github.com/DataDog/datadog-go v3.7.2+incompatible h1:o4QtYjBU/rG58VPh8Ne6F65YiMY
 github.com/DataDog/datadog-go v3.7.2+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/DataDog/sketches-go v0.0.0-20190923095040-43f19ad77ff7 h1:qELHH0AWCvf98Yf+CNIJx9vOZOfHFDDzgDRYsnNk/vs=
 github.com/DataDog/sketches-go v0.0.0-20190923095040-43f19ad77ff7/go.mod h1:Q5DbzQ+3AkgGwymQO7aZFNP7ns2lZKGtvRBzRXfdi60=
-github.com/benbjohnson/clock v1.0.0 h1:78Jk/r6m4wCi6sndMpty7A//t4dw/RW5fV4ZgDVfX1w=
-github.com/benbjohnson/clock v1.0.0/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
+github.com/benbjohnson/clock v1.0.3 h1:vkLuvpK4fmtSCuo60+yC63p7y0BmQ8gm5ZXGuBCJyXg=
+github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
+github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
+github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
+github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
+github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
+github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
+github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
+github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
+github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.0 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w=
+github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/gofuzz v1.0.0 h1:A8PeW59pxE9IoFRqBp37U+mSNaQoZ46F1f0f863XSXw=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
@@ -34,10 +48,10 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
-github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-go.opentelemetry.io/otel v0.6.0 h1:+vkHm/XwJ7ekpISV2Ixew93gCrxTbuwTF5rSewnLLgw=
-go.opentelemetry.io/otel v0.6.0/go.mod h1:jzBIgIzK43Iu1BpDAXwqOd6UPsSAk+ewVZ5ofSXw4Ek=
+github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+go.opentelemetry.io/otel v0.7.0 h1:u43jukpwqR8EsyeJOMgrsUgZwVI1e1eVw7yuzRkD1l0=
+go.opentelemetry.io/otel v0.7.0/go.mod h1:aZMyHG5TqDOXEgH2tyLiXSUKly1jT3yqE9PmrzIeCdo=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -68,13 +82,20 @@ google.golang.org/genproto v0.0.0-20191009194640-548a555dbc03 h1:4HYDjxeNXAOTv3o
 google.golang.org/genproto v0.0.0-20191009194640-548a555dbc03/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.27.1 h1:zvIju4sqAGvwKspUQOhwnpcqSbzi7/H6QomNNjTL4sk=
-google.golang.org/grpc v1.27.1/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
+google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
+google.golang.org/grpc v1.30.0 h1:M5a8xTlYTxwMn5ZFkwhRabsygDY5G8TYLyQDBxJNAxE=
+google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
+google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
+google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.23.0 h1:4MY060fB1DLGMB/7MBTLnwQUY6+F09GEiz6SsrNqyzM=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.7 h1:VUgggvou5XRW9mHwD/yXxIYSMtY0zoKQf/v226p2nyo=
-gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

exporters/metric/dogstatsd/dogstatsd.go

@@ -20,12 +20,10 @@ import (
 
 	"go.opentelemetry.io/contrib/exporters/metric/dogstatsd/internal/statsd"
 	"go.opentelemetry.io/otel/api/global"
-	"go.opentelemetry.io/otel/api/metric"
 	export "go.opentelemetry.io/otel/sdk/export/metric"
-	"go.opentelemetry.io/otel/sdk/metric/aggregator/array"
-	"go.opentelemetry.io/otel/sdk/metric/aggregator/sum"
 	"go.opentelemetry.io/otel/sdk/metric/controller/push"
-	integrator "go.opentelemetry.io/otel/sdk/metric/integrator/simple"
+	"go.opentelemetry.io/otel/sdk/metric/processor/basic"
+	"go.opentelemetry.io/otel/sdk/metric/selector/simple"
 	"go.opentelemetry.io/otel/sdk/resource"
 )
 
@@ -88,26 +86,19 @@ func NewExportPipeline(config Config, opts ...push.Option) (*push.Controller, er
 		return nil, err
 	}
 
-	// The simple integrator ensures that the export sees the full
+	// Use arrays for Values and sums for everything else
+	selector := simple.NewWithExactDistribution()
+
+	// The basic processor ensures that the exporter sees the full
 	// set of labels as dogstatsd tags.
-	integrator := integrator.New(exporter, false)
+	processor := basic.New(selector, exporter)
 
-	pusher := push.New(integrator, exporter, opts...)
+	pusher := push.New(processor, exporter, opts...)
 	pusher.Start()
 
 	return pusher, nil
 }
 
-// AggregatorFor uses an Array aggregator for Values and a Sum aggregator for counters
-func (*Exporter) AggregatorFor(descriptor *metric.Descriptor) export.Aggregator {
-	switch descriptor.MetricKind() {
-	case metric.ValueObserverKind, metric.ValueRecorderKind:
-		return array.New()
-	default:
-		return sum.New()
-	}
-}
-
 // AppendName is part of the stats-internal adapter interface.
 func (*Exporter) AppendName(rec export.Record, buf *bytes.Buffer) {
 	_, _ = buf.WriteString(rec.Descriptor().Name())

exporters/metric/dogstatsd/dogstatsd_test.go

@@ -79,11 +79,11 @@ func TestDogstatsLabels(t *testing.T) {
 			checkpointSet := test.NewCheckpointSet(res)
 
 			desc := metric.NewDescriptor("test.name", metric.CounterKind, metric.Int64NumberKind)
-			cagg := sum.New()
-			_ = cagg.Update(ctx, metric.NewInt64Number(123), &desc)
-			cagg.Checkpoint(ctx, &desc)
+			cagg, cckpt := test.Unslice2(sum.New(2))
+			require.NoError(t, cagg.Update(ctx, metric.NewInt64Number(123), &desc))
+			require.NoError(t, cagg.SynchronizedMove(cckpt, &desc))
 
-			checkpointSet.Add(&desc, cagg, tc.labels...)
+			checkpointSet.Add(&desc, cckpt, tc.labels...)
 
 			var buf bytes.Buffer
 			exp, err := dogstatsd.NewRawExporter(dogstatsd.Config{

exporters/metric/dogstatsd/go.mod

@@ -4,5 +4,5 @@ go 1.14
 
 require (
 	github.com/stretchr/testify v1.6.1
-	go.opentelemetry.io/otel v0.6.0
+	go.opentelemetry.io/otel v0.7.0
 )