config: Add support to configure periodic reader interval and timeout

config/metric.go

@@ -16,7 +16,6 @@ import (
 
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
-
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc"
 	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp"
@@ -59,7 +58,15 @@ func metricReader(ctx context.Context, r MetricReader) (sdkmetric.Reader, error)
 	}
 
 	if r.Periodic != nil {
-		return periodicExporter(ctx, r.Periodic.Exporter)
+		var opts []sdkmetric.PeriodicReaderOption
+		if r.Periodic.Interval != nil {
+			opts = append(opts, sdkmetric.WithInterval(time.Duration(*r.Periodic.Interval)*time.Millisecond))
+		}
+
+		if r.Periodic.Timeout != nil {
+			opts = append(opts, sdkmetric.WithTimeout(time.Duration(*r.Periodic.Timeout)*time.Millisecond))
+		}
+		return periodicExporter(ctx, r.Periodic.Exporter, opts...)
 	}
 
 	if r.Pull != nil {

config/metric_test.go

@@ -9,6 +9,7 @@ import (
 	"net/url"
 	"reflect"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -450,6 +451,23 @@ func TestReader(t *testing.T) {
 			},
 			wantReader: sdkmetric.NewPeriodicReader(consoleExporter),
 		},
+		{
+			name: "periodic/console-exporter-with-extra-options",
+			reader: MetricReader{
+				Periodic: &PeriodicMetricReader{
+					Interval: newIntPtr(30_000),
+					Timeout:  newIntPtr(5_000),
+					Exporter: MetricExporter{
+						Console: Console{},
+					},
+				},
+			},
+			wantReader: sdkmetric.NewPeriodicReader(
+				consoleExporter,
+				sdkmetric.WithInterval(30_000*time.Millisecond),
+				sdkmetric.WithTimeout(5_000*time.Millisecond),
+			),
+		},
 	}
 	for _, tt := range testCases {
 		t.Run(tt.name, func(t *testing.T) {
@@ -476,3 +494,7 @@ func TestReader(t *testing.T) {
 		})
 	}
 }
+
+func newIntPtr(i int) *int {
+	return &i
+}