/
BigtableStackdriverStatsExporter.java
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/
BigtableStackdriverStatsExporter.java
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/*
* Copyright 2022 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.cloud.bigtable.stats;
import com.google.api.MonitoredResource;
import com.google.api.core.InternalApi;
import com.google.api.gax.core.FixedCredentialsProvider;
import com.google.api.gax.grpc.InstantiatingGrpcChannelProvider;
import com.google.auth.Credentials;
import com.google.cloud.monitoring.v3.MetricServiceClient;
import com.google.cloud.monitoring.v3.MetricServiceSettings;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.MoreObjects;
import com.google.common.base.Preconditions;
import io.opencensus.common.Duration;
import io.opencensus.exporter.metrics.util.IntervalMetricReader;
import io.opencensus.exporter.metrics.util.MetricReader;
import io.opencensus.metrics.Metrics;
import java.io.IOException;
import javax.annotation.Nullable;
import javax.annotation.concurrent.GuardedBy;
@InternalApi
public class BigtableStackdriverStatsExporter {
static final Object lock = new Object();
@Nullable
@GuardedBy("lock")
private static BigtableStackdriverStatsExporter instance = null;
// Default export interval is 1 minute
private static final Duration EXPORT_INTERVAL = Duration.create(60, 0);
private static final String RESOURCE_TYPE = "bigtable_client_raw";
private static final String MONITORING_ENDPOINT =
MoreObjects.firstNonNull(
System.getProperty("bigtable.test-monitoring-endpoint"),
MetricServiceSettings.getDefaultEndpoint());
private final IntervalMetricReader intervalMetricReader;
private BigtableStackdriverStatsExporter(
MetricServiceClient metricServiceClient,
Duration exportInterval,
MonitoredResource monitoredResource) {
IntervalMetricReader.Options.Builder intervalMetricReaderOptionsBuilder =
IntervalMetricReader.Options.builder();
intervalMetricReaderOptionsBuilder.setExportInterval(exportInterval);
this.intervalMetricReader =
IntervalMetricReader.create(
new BigtableCreateTimeSeriesExporter(metricServiceClient, monitoredResource),
MetricReader.create(
MetricReader.Options.builder()
.setMetricProducerManager(
Metrics.getExportComponent().getMetricProducerManager())
.build()),
intervalMetricReaderOptionsBuilder.build());
}
public static void register(Credentials credentials) throws IOException {
synchronized (lock) {
Preconditions.checkState(
instance == null, "Bigtable Stackdriver stats exporter is already created");
// Default timeout for creating a client is 1 minute
MetricServiceClient client = createMetricServiceClient(credentials, Duration.create(60L, 0));
MonitoredResource resourceType =
MonitoredResource.newBuilder().setType(RESOURCE_TYPE).build();
instance = new BigtableStackdriverStatsExporter(client, EXPORT_INTERVAL, resourceType);
}
}
@GuardedBy("lock")
@VisibleForTesting
static MetricServiceClient createMetricServiceClient(Credentials credentials, Duration deadline)
throws IOException {
MetricServiceSettings.Builder settingsBuilder =
MetricServiceSettings.newBuilder()
.setTransportChannelProvider(InstantiatingGrpcChannelProvider.newBuilder().build());
settingsBuilder.setCredentialsProvider(FixedCredentialsProvider.create(credentials));
settingsBuilder.setEndpoint(MONITORING_ENDPOINT);
org.threeten.bp.Duration timeout = org.threeten.bp.Duration.ofMillis(deadline.toMillis());
settingsBuilder.createServiceTimeSeriesSettings().setSimpleTimeoutNoRetries(timeout);
return MetricServiceClient.create(settingsBuilder.build());
}
}