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Modify metrics example to export via OTLP to telemetry.googleapis.com #447

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21 changes: 19 additions & 2 deletions examples/metrics/build.gradle
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Original file line number Diff line number Diff line change
Expand Up @@ -29,16 +29,33 @@ jib {
containerizingMode = 'packaged'
}

mainClassName = 'com.google.cloud.opentelemetry.example.metrics.MetricsExporterExample'
def autoconf_config = [
'-Dotel.exporter.otlp.endpoint=https://telemetry.googleapis.com',
'-Dotel.resource.attributes=gcp.project_id=<YOUR_PROJECT_ID>',
'-Dotel.metrics.exporter=otlp',
'-Dotel.logs.exporter=none',
'-Dotel.traces.exporter=none',
'-Dotel.service.name=metrics-example',
'-Dotel.exporter.otlp.protocol=http/protobuf',
'-Dotel.java.global-autoconfigure.enabled=true',
]

application {
mainClassName = 'com.google.cloud.opentelemetry.example.metrics.MetricsExporterExample'
applicationDefaultJvmArgs = autoconf_config
}

description = 'Examples for Cloud Monitoring Exporter'

dependencies {
implementation(libraries.opentelemetry_api)
implementation(libraries.opentelemetry_sdk_metrics)
implementation(libraries.opentelemetry_sdk)
implementation(libraries.opentelemetry_sdk_autoconf)
implementation(libraries.google_cloud_monitoring)
implementation project(':exporter-metrics')
implementation(libraries.opentelemetry_gcp_resources)
implementation(libraries.opentelemetry_otlp_exporter)
implementation(libraries.opentelemetry_gcp_auth_extension)
// required by resource detection
implementation(libraries.opentelemetry_autoconfigure_spi)
// this helps in debugging as it outputs all export to std out
Expand Down
39 changes: 21 additions & 18 deletions .../src/main/java/com/google/cloud/opentelemetry/example/metrics/MetricsExporterExample.java
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Original file line number Diff line number Diff line change
Expand Up @@ -28,20 +28,20 @@
import io.grpc.ManagedChannelBuilder;
import io.opentelemetry.api.metrics.LongCounter;
import io.opentelemetry.api.metrics.Meter;
import io.opentelemetry.contrib.gcp.resource.GCPResourceProvider;
import io.opentelemetry.exporter.logging.LoggingMetricExporter;
import io.opentelemetry.sdk.OpenTelemetrySdk;
import io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk;
import io.opentelemetry.sdk.common.CompletableResultCode;
import io.opentelemetry.sdk.metrics.SdkMeterProvider;
import io.opentelemetry.sdk.metrics.export.MetricExporter;
import io.opentelemetry.sdk.metrics.export.PeriodicMetricReader;
import io.opentelemetry.sdk.resources.Resource;
import java.io.IOException;
import java.time.Duration;
import java.util.Random;
import java.util.concurrent.TimeUnit;

public class MetricsExporterExample {
private static SdkMeterProvider METER_PROVIDER;
private static OpenTelemetrySdk OPEN_TELEMETRY_SDK;

private static Meter METER;
private static final Random RANDOM = new Random();
Expand Down Expand Up @@ -81,25 +81,28 @@ private static MetricConfiguration generateMetricExporterConfig(boolean useDefau
}

private static void setupMetricExporter(MetricConfiguration metricConfiguration) {
GCPResourceProvider resourceProvider = new GCPResourceProvider();
MetricExporter metricExporter =
GoogleCloudMetricExporter.createWithConfiguration(metricConfiguration);
MetricExporter metricDebugExporter = LoggingMetricExporter.create();
METER_PROVIDER =
SdkMeterProvider.builder()
.setResource(Resource.create(resourceProvider.getAttributes()))
.registerMetricReader(
PeriodicMetricReader.builder(metricExporter)
.setInterval(Duration.ofSeconds(30))
.build())
.registerMetricReader(
PeriodicMetricReader.builder(metricDebugExporter)
.setInterval(Duration.ofSeconds(30))
.build())
.build();

OPEN_TELEMETRY_SDK =
AutoConfiguredOpenTelemetrySdk.builder()
.addMeterProviderCustomizer(
(meterProviderBuilder, configProperties) ->
meterProviderBuilder
.registerMetricReader(
PeriodicMetricReader.builder(metricExporter)
.setInterval(Duration.ofSeconds(30))
.build())
.registerMetricReader(
PeriodicMetricReader.builder(metricDebugExporter)
.setInterval(Duration.ofSeconds(30))
.build()))
.build()
.getOpenTelemetrySdk();

METER =
METER_PROVIDER
OPEN_TELEMETRY_SDK
.meterBuilder("instrumentation-library-name")
.setInstrumentationVersion("semver:1.0.0")
.build();
Expand Down Expand Up @@ -148,7 +151,7 @@ public static void main(String[] args) throws InterruptedException, IOException
} finally {
System.out.println("Shutting down the metrics-example application");

CompletableResultCode resultCode = METER_PROVIDER.shutdown();
CompletableResultCode resultCode = OPEN_TELEMETRY_SDK.getSdkMeterProvider().shutdown();
// Wait upto 60 seconds for job to complete
resultCode.join(60, TimeUnit.SECONDS);
if (resultCode.isSuccess()) {
Expand Down
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