Convert XConfigure into constructor for metrics (#1175)

* Convert XConfigure into constructor for metrics

A follow up of #1155.

* Add to CHANGELOG

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

CHANGELOG.md

@@ -40,6 +40,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
    recommend the use of `newConfig()` instead of `configure()`. (#1163)
 - The `otlp.Config` type has been unexported and changed to `otlp.config`, along with its initializer. (#1163)
 - Don't consider unset environment variable for resource detection to be an error. (#1170)
+- Rename `go.opentelemetry.io/otel/api/metric.ConfigureInstrument` to `NewInstrumentConfig` and
+  `go.opentelemetry.io/otel/api/metric.ConfigureMeter` to `NewMeterConfig`.
 
 ### Fixed
 

api/global/internal/meter.go

@@ -152,7 +152,7 @@ func (p *meterProvider) Meter(instrumentationName string, opts ...metric.MeterOp
 
 	key := meterKey{
 		Name:    instrumentationName,
-		Version: metric.ConfigureMeter(opts).InstrumentationVersion,
+		Version: metric.NewMeterConfig(opts...).InstrumentationVersion,
 	}
 	entry, ok := p.meters[key]
 	if !ok {

api/metric/api_test.go

@@ -110,7 +110,7 @@ func TestOptions(t *testing.T) {
 	}
 	for idx, tt := range testcases {
 		t.Logf("Testing counter case %s (%d)", tt.name, idx)
-		if diff := cmp.Diff(metric.ConfigureInstrument(tt.opts), metric.InstrumentConfig{
+		if diff := cmp.Diff(metric.NewInstrumentConfig(tt.opts...), metric.InstrumentConfig{
 			Description: tt.desc,
 			Unit:        tt.unit,
 		}); diff != "" {

api/metric/config.go

@@ -37,9 +37,9 @@ type InstrumentOption interface {
 	ApplyInstrument(*InstrumentConfig)
 }
 
-// ConfigureInstrument is a helper that applies all the InstrumentOptions
-// to an InstrumentConfig.
-func ConfigureInstrument(opts []InstrumentOption) InstrumentConfig {
+// NewInstrumentConfig creates a new InstrumentConfig
+// and applies all the given options.
+func NewInstrumentConfig(opts ...InstrumentOption) InstrumentConfig {
 	var config InstrumentConfig
 	for _, o := range opts {
 		o.ApplyInstrument(&config)
@@ -93,9 +93,9 @@ type MeterOption interface {
 	ApplyMeter(*MeterConfig)
 }
 
-// ConfigureMeter is a helper that applies all the MeterOptions to a
-// MeterConfig.
-func ConfigureMeter(opts []MeterOption) MeterConfig {
+// NewMeterConfig creates a new MeterConfig and applies
+// all the given options.
+func NewMeterConfig(opts ...MeterOption) MeterConfig {
 	var config MeterConfig
 	for _, o := range opts {
 		o.ApplyMeter(&config)

api/metric/descriptor.go

@@ -32,7 +32,7 @@ func NewDescriptor(name string, mkind Kind, nkind NumberKind, opts ...Instrument
 		name:       name,
 		kind:       mkind,
 		numberKind: nkind,
-		config:     ConfigureInstrument(opts),
+		config:     NewInstrumentConfig(opts...),
 	}
 }
 

api/metric/sdkapi.go

@@ -89,6 +89,6 @@ func WrapMeterImpl(impl MeterImpl, instrumentatioName string, opts ...MeterOptio
 	return Meter{
 		impl:    impl,
 		name:    instrumentatioName,
-		version: ConfigureMeter(opts).InstrumentationVersion,
+		version: NewMeterConfig(opts...).InstrumentationVersion,
 	}
 }