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138 changes: 138 additions & 0 deletions
138
...d-spanner/src/main/java/com/google/cloud/spanner/BuiltInOpenTelemetryMetricsProvider.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| package com.google.cloud.spanner; | ||
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|
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| import static com.google.cloud.spanner.SpannerMetricsConstant.CLIENT_NAME_KEY; | ||
| import static com.google.cloud.spanner.SpannerMetricsConstant.CLIENT_UID_KEY; | ||
| import static com.google.cloud.spanner.SpannerMetricsConstant.INSTANCE_CONFIG_ID_KEY; | ||
| import static com.google.cloud.spanner.SpannerMetricsConstant.DIRECT_PATH_ENABLED_KEY; | ||
| import static com.google.cloud.spanner.SpannerMetricsConstant.LOCATION_ID_KEY; | ||
| import static com.google.cloud.spanner.SpannerMetricsConstant.PROJECT_ID_KEY; | ||
|
|
||
| import com.google.api.gax.core.GaxProperties; | ||
| import com.google.auth.Credentials; | ||
| import com.google.cloud.opentelemetry.detection.DetectedPlatform; | ||
| import com.google.cloud.opentelemetry.detection.GCPPlatformDetector; | ||
| import com.google.common.collect.ImmutableSet; | ||
| import io.opentelemetry.api.OpenTelemetry; | ||
| import io.opentelemetry.api.common.AttributeKey; | ||
| import io.opentelemetry.sdk.OpenTelemetrySdk; | ||
| import io.opentelemetry.sdk.metrics.InstrumentSelector; | ||
| import io.opentelemetry.sdk.metrics.InstrumentType; | ||
| import io.opentelemetry.sdk.metrics.SdkMeterProvider; | ||
| import io.opentelemetry.sdk.metrics.SdkMeterProviderBuilder; | ||
| import io.opentelemetry.sdk.metrics.View; | ||
| import io.opentelemetry.sdk.metrics.export.MetricExporter; | ||
| import io.opentelemetry.sdk.metrics.export.PeriodicMetricReader; | ||
| import java.io.IOException; | ||
| import java.lang.management.ManagementFactory; | ||
| import java.net.InetAddress; | ||
| import java.net.UnknownHostException; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.UUID; | ||
| import java.util.logging.Level; | ||
| import java.util.logging.Logger; | ||
| import java.util.stream.Collectors; | ||
| import javax.annotation.Nullable; | ||
|
|
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| class BuiltInOpenTelemetryMetricsProvider { | ||
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| private static final Logger logger = | ||
| Logger.getLogger(BuiltInOpenTelemetryMetricsProvider.class.getName()); | ||
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| private OpenTelemetry openTelemetry; | ||
| public OpenTelemetry getOpenTelemetry(String projectId, @Nullable Credentials credentials) { | ||
| if (this.openTelemetry == null) { | ||
|
|
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| // Use custom exporter | ||
| MetricExporter metricExporter = null; | ||
| try { | ||
| metricExporter = SpannerCloudMonitoringExporter.create(projectId, credentials); | ||
|
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| SdkMeterProviderBuilder sdkMeterProviderBuilder = SdkMeterProvider.builder(); | ||
| registerView(sdkMeterProviderBuilder, SpannerMetricsConstant.OPERATION_LATENCY_NAME, SpannerMetricsConstant.OPERATION_LATENCIES_NAME); | ||
| registerView(sdkMeterProviderBuilder, SpannerMetricsConstant.ATTEMPT_LATENCY_NAME, SpannerMetricsConstant.ATTEMPT_LATENCIES_NAME); | ||
| registerView(sdkMeterProviderBuilder, SpannerMetricsConstant.OPERATION_COUNT_NAME, SpannerMetricsConstant.OPERATION_COUNT_NAME); | ||
| registerView(sdkMeterProviderBuilder, SpannerMetricsConstant.ATTEMPT_COUNT_NAME, SpannerMetricsConstant.ATTEMPT_COUNT_NAME); | ||
|
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| SdkMeterProvider sdkMeterProvider = | ||
| sdkMeterProviderBuilder | ||
| .registerMetricReader(PeriodicMetricReader.create(metricExporter)) | ||
| .build(); | ||
|
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| this.openTelemetry = | ||
| OpenTelemetrySdk.builder().setMeterProvider(sdkMeterProvider).build(); | ||
| } catch (IOException e) { | ||
| logger.log(Level.WARNING, "Unable to get OpenTelemetry object for client side metrics, will skip exporting client side metrics", e); | ||
| } | ||
| } | ||
| return this.openTelemetry; | ||
| } | ||
|
|
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| public Map<String, String> getClientAttributes(String projectId) { | ||
| Map<String, String> clientAttributes = new HashMap<>(); | ||
| clientAttributes.put(LOCATION_ID_KEY.getKey(), detectClientLocation()); | ||
| clientAttributes.put(PROJECT_ID_KEY.getKey(), projectId); | ||
| clientAttributes.put(INSTANCE_CONFIG_ID_KEY.getKey(), "us-central1"); | ||
| clientAttributes.put(DIRECT_PATH_ENABLED_KEY.getKey(), "true"); | ||
| clientAttributes.put(CLIENT_NAME_KEY.getKey(), "spanner-java/" + GaxProperties.getLibraryVersion(SpannerCloudMonitoringExporterUtils.class)); | ||
| clientAttributes.put(CLIENT_UID_KEY.getKey(), getDefaultTaskValue()); | ||
| return clientAttributes; | ||
| } | ||
|
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| private void registerView(SdkMeterProviderBuilder sdkMeterProviderBuilder, String metricName, String metricViewName) { | ||
| InstrumentSelector selector = | ||
| InstrumentSelector.builder() | ||
| .setName(SpannerMetricsConstant.METER_NAME + '/' | ||
| + metricName) | ||
| .setMeterName(SpannerMetricsConstant.GAX_METER_NAME) | ||
| .setType(InstrumentType.HISTOGRAM) | ||
| .setUnit("ms") | ||
| .build(); | ||
| Set<String> attributesFilter = | ||
| ImmutableSet.<String>builder() | ||
| .addAll( | ||
| SpannerMetricsConstant.COMMON_ATTRIBUTES.stream() | ||
| .map(AttributeKey::getKey) | ||
| .collect(Collectors.toSet())) | ||
| .build(); | ||
| View view = | ||
| View.builder() | ||
| .setName(SpannerMetricsConstant.METER_NAME + '/' | ||
| + metricViewName) | ||
| .setAggregation(SpannerMetricsConstant.AGGREGATION_WITH_MILLIS_HISTOGRAM) | ||
| .setAttributeFilter(attributesFilter) | ||
| .build(); | ||
| sdkMeterProviderBuilder.registerView(selector, view); | ||
| } | ||
|
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|
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| private String detectClientLocation() { | ||
| GCPPlatformDetector detector = GCPPlatformDetector.DEFAULT_INSTANCE; | ||
| DetectedPlatform detectedPlatform = detector.detectPlatform(); | ||
| String region = detectedPlatform.getAttributes().get("cloud.region"); | ||
| return region; | ||
| } | ||
|
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|
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| /** | ||
| * In most cases this should look like ${UUID}@${hostname}. The hostname will be retrieved from | ||
| * the jvm name and fallback to the local hostname. | ||
| */ | ||
| private String getDefaultTaskValue() { | ||
| // Something like '<pid>@<hostname>' | ||
| final String jvmName = ManagementFactory.getRuntimeMXBean().getName(); | ||
| // If jvm doesn't have the expected format, fallback to the local hostname | ||
| if (jvmName.indexOf('@') < 1) { | ||
| String hostname = "localhost"; | ||
| try { | ||
| hostname = InetAddress.getLocalHost().getHostName(); | ||
| } catch (UnknownHostException e) { | ||
| logger.log(Level.INFO, "Unable to get the hostname.", e); | ||
| } | ||
| // Generate a random number and use the same format "random_number@hostname". | ||
| return UUID.randomUUID() + "@" + hostname; | ||
| } | ||
| return UUID.randomUUID() + jvmName; | ||
| } | ||
| } |
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