#19975

Committed 08 Sep 2025 09:55PM UTC coverage: 88.547% (+0.01%) from 88.535%

Build # #19975

Build Type

push

github

Committed by

web-flow

Commit Message

otel: subchannel metrics A94 (#12202)

Implements [A94](https://github.com/grpc/proposal/pull/485/files) except for the exact reason for disconnect_error

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/../opentelemetry/src/main/java/io/grpc/opentelemetry/OpenTelemetryMetricSink.java

/*
 * Copyright 2024 The gRPC Authors
 *
 * 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
 *
 *     http://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 io.grpc.opentelemetry;

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import io.grpc.CallbackMetricInstrument;
import io.grpc.DoubleCounterMetricInstrument;
import io.grpc.DoubleHistogramMetricInstrument;
import io.grpc.LongCounterMetricInstrument;
import io.grpc.LongGaugeMetricInstrument;
import io.grpc.LongHistogramMetricInstrument;
import io.grpc.LongUpDownCounterMetricInstrument;
import io.grpc.MetricInstrument;
import io.grpc.MetricSink;
import io.opentelemetry.api.common.Attributes;
import io.opentelemetry.api.common.AttributesBuilder;
import io.opentelemetry.api.metrics.BatchCallback;
import io.opentelemetry.api.metrics.DoubleCounter;
import io.opentelemetry.api.metrics.DoubleHistogram;
import io.opentelemetry.api.metrics.LongCounter;
import io.opentelemetry.api.metrics.LongHistogram;
import io.opentelemetry.api.metrics.LongUpDownCounter;
import io.opentelemetry.api.metrics.Meter;
import io.opentelemetry.api.metrics.ObservableLongMeasurement;
import io.opentelemetry.api.metrics.ObservableMeasurement;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;

final class OpenTelemetryMetricSink implements MetricSink {
  private static final Logger logger = Logger.getLogger(OpenTelemetryMetricSink.class.getName());
  private final Object lock = new Object();
  private final Meter openTelemetryMeter;
  private final Map<String, Boolean> enableMetrics;
  private final boolean disableDefaultMetrics;
  private final Set<String> optionalLabels;
  private volatile List<MeasuresData> measures = new ArrayList<>();

  OpenTelemetryMetricSink(Meter meter, Map<String, Boolean> enableMetrics,
      boolean disableDefaultMetrics, List<String> optionalLabels) {
    this.openTelemetryMeter = checkNotNull(meter, "meter");
    this.enableMetrics = ImmutableMap.copyOf(enableMetrics);
    this.disableDefaultMetrics = disableDefaultMetrics;
    this.optionalLabels = ImmutableSet.copyOf(optionalLabels);
  }

  @Override
  public Map<String, Boolean> getEnabledMetrics() {
    return enableMetrics;
  }

  @Override
  public Set<String> getOptionalLabels() {
    return optionalLabels;
  }

  @Override
  public int getMeasuresSize() {
    return measures.size();
  }

  @VisibleForTesting
  List<MeasuresData> getMeasures() {
    synchronized (lock) {
      return Collections.unmodifiableList(measures);
    }
  }

  @Override
  public void addDoubleCounter(DoubleCounterMetricInstrument metricInstrument, double value,
      List<String> requiredLabelValues, List<String> optionalLabelValues) {
    MeasuresData instrumentData = measures.get(metricInstrument.getIndex());
    if (instrumentData == null) {
      // Disabled metric
      return;
    }
    Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),
        metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,
        instrumentData.getOptionalLabelsBitSet());
    DoubleCounter counter = (DoubleCounter) instrumentData.getMeasure();
    counter.add(value, attributes);
  }

  @Override
  public void addLongCounter(LongCounterMetricInstrument metricInstrument, long value,
      List<String> requiredLabelValues, List<String> optionalLabelValues) {
    MeasuresData instrumentData = measures.get(metricInstrument.getIndex());
    if (instrumentData == null) {
      // Disabled metric
      return;
    }
    Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),
        metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,
        instrumentData.getOptionalLabelsBitSet());
    LongCounter counter = (LongCounter) instrumentData.getMeasure();
    counter.add(value, attributes);
  }

  @Override
  public void addLongUpDownCounter(LongUpDownCounterMetricInstrument metricInstrument, long value,
                                   List<String> requiredLabelValues,
                                   List<String> optionalLabelValues) {
    MeasuresData instrumentData = measures.get(metricInstrument.getIndex());
    if (instrumentData == null) {
      // Disabled metric
      return;
    }
    Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),
        metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,
        instrumentData.getOptionalLabelsBitSet());
    LongUpDownCounter counter = (LongUpDownCounter) instrumentData.getMeasure();
    counter.add(value, attributes);
  }

  @Override
  public void recordDoubleHistogram(DoubleHistogramMetricInstrument metricInstrument, double value,
      List<String> requiredLabelValues, List<String> optionalLabelValues) {
    MeasuresData instrumentData = measures.get(metricInstrument.getIndex());
    if (instrumentData == null) {
      // Disabled metric
      return;
    }
    Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),
        metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,
        instrumentData.getOptionalLabelsBitSet());
    DoubleHistogram histogram = (DoubleHistogram) instrumentData.getMeasure();
    histogram.record(value, attributes);
  }

  @Override
  public void recordLongHistogram(LongHistogramMetricInstrument metricInstrument, long value,
      List<String> requiredLabelValues, List<String> optionalLabelValues) {
    MeasuresData instrumentData = measures.get(metricInstrument.getIndex());
    if (instrumentData == null) {
      // Disabled metric
      return;
    }
    Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),
        metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,
        instrumentData.getOptionalLabelsBitSet());
    LongHistogram histogram = (LongHistogram) instrumentData.getMeasure();
    histogram.record(value, attributes);
  }

  @Override
  public void recordLongGauge(LongGaugeMetricInstrument metricInstrument, long value,
      List<String> requiredLabelValues, List<String> optionalLabelValues) {
    MeasuresData instrumentData = measures.get(metricInstrument.getIndex());
    if (instrumentData == null) {
      // Disabled metric
      return;
    }
    Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),
        metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,
        instrumentData.getOptionalLabelsBitSet());
    ObservableLongMeasurement gauge = (ObservableLongMeasurement) instrumentData.getMeasure();
    gauge.record(value, attributes);
  }

  @Override
  public Registration registerBatchCallback(Runnable callback,
      CallbackMetricInstrument... metricInstruments) {
    List<ObservableMeasurement> measurements = new ArrayList<>(metricInstruments.length);
    for (CallbackMetricInstrument metricInstrument: metricInstruments) {
      MeasuresData instrumentData = measures.get(metricInstrument.getIndex());
      if (instrumentData == null) {
        // Disabled metric
        continue;
      }
      if (!(instrumentData.getMeasure() instanceof ObservableMeasurement)) {
        logger.log(Level.FINE, "Unsupported metric instrument type : {0} {1}",
            new Object[] {metricInstrument, instrumentData.getMeasure().getClass()});
        continue;
      }
      measurements.add((ObservableMeasurement) instrumentData.getMeasure());
    }
    if (measurements.isEmpty()) {
      return () -> { };
    }
    ObservableMeasurement first = measurements.get(0);
    measurements.remove(0);
    BatchCallback closeable = openTelemetryMeter.batchCallback(
        callback, first, measurements.toArray(new ObservableMeasurement[0]));
    return closeable::close;
  }

  @Override
  public void updateMeasures(List<MetricInstrument> instruments) {
    synchronized (lock) {
      if (measures.size() >= instruments.size()) {
        // Already up-to-date
        return;
      }

      List<MeasuresData> newMeasures = new ArrayList<>(instruments.size());
      // Reuse existing measures
      newMeasures.addAll(measures);

      for (int i = measures.size(); i < instruments.size(); i++) {
        MetricInstrument instrument = instruments.get(i);
        // Check if the metric is disabled
        if (!shouldEnableMetric(instrument)) {
          // Adding null measure for disabled Metric
          newMeasures.add(null);
          continue;
        }

        BitSet bitSet = new BitSet(instrument.getOptionalLabelKeys().size());
        if (optionalLabels.isEmpty()) {
          // initialize an empty list
        } else {
          List<String> labels = instrument.getOptionalLabelKeys();
          for (int j = 0; j < labels.size(); j++) {
            if (optionalLabels.contains(labels.get(j))) {
              bitSet.set(j);
            }
          }
        }

        int index = instrument.getIndex();
        String name = instrument.getName();
        String unit = instrument.getUnit();
        String description = instrument.getDescription();

        Object openTelemetryMeasure;
        if (instrument instanceof DoubleCounterMetricInstrument) {
          openTelemetryMeasure = openTelemetryMeter.counterBuilder(name)
              .setUnit(unit)
              .setDescription(description)
              .ofDoubles()
              .build();
        } else if (instrument instanceof LongCounterMetricInstrument) {
          openTelemetryMeasure = openTelemetryMeter.counterBuilder(name)
              .setUnit(unit)
              .setDescription(description)
              .build();
        } else if (instrument instanceof DoubleHistogramMetricInstrument) {
          openTelemetryMeasure = openTelemetryMeter.histogramBuilder(name)
              .setUnit(unit)
              .setDescription(description)
              .build();
        } else if (instrument instanceof LongHistogramMetricInstrument) {
          openTelemetryMeasure = openTelemetryMeter.histogramBuilder(name)
              .setUnit(unit)
              .setDescription(description)
              .ofLongs()
              .build();
        } else if (instrument instanceof LongGaugeMetricInstrument) {
          openTelemetryMeasure = openTelemetryMeter.gaugeBuilder(name)
              .setUnit(unit)
              .setDescription(description)
              .ofLongs()
              .buildObserver();
        } else if (instrument instanceof LongUpDownCounterMetricInstrument) {
          openTelemetryMeasure = openTelemetryMeter.upDownCounterBuilder(name)
              .setUnit(unit)
              .setDescription(description)
              .build();
        } else {
          logger.log(Level.FINE, "Unsupported metric instrument type : {0}", instrument);
          openTelemetryMeasure = null;
        }
        newMeasures.add(index, new MeasuresData(bitSet, openTelemetryMeasure));
      }

      measures = newMeasures;
    }
  }

  private boolean shouldEnableMetric(MetricInstrument instrument) {
    Boolean explicitlyEnabled = enableMetrics.get(instrument.getName());
    if (explicitlyEnabled != null) {
      return explicitlyEnabled;
    }
    return instrument.isEnableByDefault() && !disableDefaultMetrics;
  }


  private Attributes createAttributes(List<String> requiredLabelKeys,
      List<String> optionalLabelKeys,
      List<String> requiredLabelValues, List<String> optionalLabelValues, BitSet bitSet) {
    AttributesBuilder builder = Attributes.builder();
    // Required Labels
    for (int i = 0; i < requiredLabelKeys.size(); i++) {
      builder.put(requiredLabelKeys.get(i), requiredLabelValues.get(i));
    }
    // Optional labels
    for (int i = bitSet.nextSetBit(0); i >= 0; i = bitSet.nextSetBit(i + 1)) {
      if (i == Integer.MAX_VALUE) {
        break; // or (i+1) would overflow
      }
      builder.put(optionalLabelKeys.get(i), optionalLabelValues.get(i));
    }
    return builder.build();
  }

  static final class MeasuresData {
    final BitSet optionalLabelsIndices;
    final Object measure;

    MeasuresData(BitSet optionalLabelsIndices, Object measure) {
      this.optionalLabelsIndices = optionalLabelsIndices;
      this.measure = measure;
    }

    public BitSet getOptionalLabelsBitSet() {
      return optionalLabelsIndices;
    }

    public Object getMeasure() {
      return measure;
    }
  }

}

1	/*
2	* Copyright 2024 The gRPC Authors
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16
17	package io.grpc.opentelemetry;
18
19	import static com.google.common.base.Preconditions.checkNotNull;
20
21	import com.google.common.annotations.VisibleForTesting;
22	import com.google.common.collect.ImmutableMap;
23	import com.google.common.collect.ImmutableSet;
24	import io.grpc.CallbackMetricInstrument;
25	import io.grpc.DoubleCounterMetricInstrument;
26	import io.grpc.DoubleHistogramMetricInstrument;
27	import io.grpc.LongCounterMetricInstrument;
28	import io.grpc.LongGaugeMetricInstrument;
29	import io.grpc.LongHistogramMetricInstrument;
30	import io.grpc.LongUpDownCounterMetricInstrument;
31	import io.grpc.MetricInstrument;
32	import io.grpc.MetricSink;
33	import io.opentelemetry.api.common.Attributes;
34	import io.opentelemetry.api.common.AttributesBuilder;
35	import io.opentelemetry.api.metrics.BatchCallback;
36	import io.opentelemetry.api.metrics.DoubleCounter;
37	import io.opentelemetry.api.metrics.DoubleHistogram;
38	import io.opentelemetry.api.metrics.LongCounter;
39	import io.opentelemetry.api.metrics.LongHistogram;
40	import io.opentelemetry.api.metrics.LongUpDownCounter;
41	import io.opentelemetry.api.metrics.Meter;
42	import io.opentelemetry.api.metrics.ObservableLongMeasurement;
43	import io.opentelemetry.api.metrics.ObservableMeasurement;
44	import java.util.ArrayList;
45	import java.util.BitSet;
46	import java.util.Collections;
47	import java.util.List;
48	import java.util.Map;
49	import java.util.Set;
50	import java.util.logging.Level;
51	import java.util.logging.Logger;
52
53	final class OpenTelemetryMetricSink implements MetricSink {
54	private static final Logger logger = Logger.getLogger(OpenTelemetryMetricSink.class.getName());	1✔
55	private final Object lock = new Object();	1✔
56	private final Meter openTelemetryMeter;
57	private final Map<String, Boolean> enableMetrics;
58	private final boolean disableDefaultMetrics;
59	private final Set<String> optionalLabels;
60	private volatile List<MeasuresData> measures = new ArrayList<>();	1✔
61
62	OpenTelemetryMetricSink(Meter meter, Map<String, Boolean> enableMetrics,
63	boolean disableDefaultMetrics, List<String> optionalLabels) {	1✔
64	this.openTelemetryMeter = checkNotNull(meter, "meter");	1✔
65	this.enableMetrics = ImmutableMap.copyOf(enableMetrics);	1✔
66	this.disableDefaultMetrics = disableDefaultMetrics;	1✔
67	this.optionalLabels = ImmutableSet.copyOf(optionalLabels);	1✔
68	}	1✔
69
70	@Override
71	public Map<String, Boolean> getEnabledMetrics() {
72	return enableMetrics;	×
73	}
74
75	@Override
76	public Set<String> getOptionalLabels() {
77	return optionalLabels;	×
78	}
79
80	@Override
81	public int getMeasuresSize() {
82	return measures.size();	1✔
83	}
84
85	@VisibleForTesting
86	List<MeasuresData> getMeasures() {
87	synchronized (lock) {	1✔
88	return Collections.unmodifiableList(measures);	1✔
89	}
90	}
91
92	@Override
93	public void addDoubleCounter(DoubleCounterMetricInstrument metricInstrument, double value,
94	List<String> requiredLabelValues, List<String> optionalLabelValues) {
95	MeasuresData instrumentData = measures.get(metricInstrument.getIndex());	1✔
96	if (instrumentData == null) {	1✔
97	// Disabled metric
98	return;	×
99	}
100	Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),	1✔
101	metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,	1✔
102	instrumentData.getOptionalLabelsBitSet());	1✔
103	DoubleCounter counter = (DoubleCounter) instrumentData.getMeasure();	1✔
104	counter.add(value, attributes);	1✔
105	}	1✔
106
107	@Override
108	public void addLongCounter(LongCounterMetricInstrument metricInstrument, long value,
109	List<String> requiredLabelValues, List<String> optionalLabelValues) {
110	MeasuresData instrumentData = measures.get(metricInstrument.getIndex());	1✔
111	if (instrumentData == null) {	1✔
112	// Disabled metric
113	return;	1✔
114	}
115	Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),	1✔
116	metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,	1✔
117	instrumentData.getOptionalLabelsBitSet());	1✔
118	LongCounter counter = (LongCounter) instrumentData.getMeasure();	1✔
119	counter.add(value, attributes);	1✔
120	}	1✔
121
122	@Override
123	public void addLongUpDownCounter(LongUpDownCounterMetricInstrument metricInstrument, long value,
124	List<String> requiredLabelValues,
125	List<String> optionalLabelValues) {
126	MeasuresData instrumentData = measures.get(metricInstrument.getIndex());	1✔
127	if (instrumentData == null) {	1✔
128	// Disabled metric
129	return;	1✔
130	}
131	Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),	1✔
132	metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,	1✔
133	instrumentData.getOptionalLabelsBitSet());	1✔
134	LongUpDownCounter counter = (LongUpDownCounter) instrumentData.getMeasure();	1✔
135	counter.add(value, attributes);	1✔
136	}	1✔
137
138	@Override
139	public void recordDoubleHistogram(DoubleHistogramMetricInstrument metricInstrument, double value,
140	List<String> requiredLabelValues, List<String> optionalLabelValues) {
141	MeasuresData instrumentData = measures.get(metricInstrument.getIndex());	1✔
142	if (instrumentData == null) {	1✔
143	// Disabled metric
144	return;	1✔
145	}
146	Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),	1✔
147	metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,	1✔
148	instrumentData.getOptionalLabelsBitSet());	1✔
149	DoubleHistogram histogram = (DoubleHistogram) instrumentData.getMeasure();	1✔
150	histogram.record(value, attributes);	1✔
151	}	1✔
152
153	@Override
154	public void recordLongHistogram(LongHistogramMetricInstrument metricInstrument, long value,
155	List<String> requiredLabelValues, List<String> optionalLabelValues) {
156	MeasuresData instrumentData = measures.get(metricInstrument.getIndex());	1✔
157	if (instrumentData == null) {	1✔
158	// Disabled metric
159	return;	1✔
160	}
161	Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),	1✔
162	metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,	1✔
163	instrumentData.getOptionalLabelsBitSet());	1✔
164	LongHistogram histogram = (LongHistogram) instrumentData.getMeasure();	1✔
165	histogram.record(value, attributes);	1✔
166	}	1✔
167
168	@Override
169	public void recordLongGauge(LongGaugeMetricInstrument metricInstrument, long value,
170	List<String> requiredLabelValues, List<String> optionalLabelValues) {
171	MeasuresData instrumentData = measures.get(metricInstrument.getIndex());	1✔
172	if (instrumentData == null) {	1✔
173	// Disabled metric
174	return;	1✔
175	}
176	Attributes attributes = createAttributes(metricInstrument.getRequiredLabelKeys(),	1✔
177	metricInstrument.getOptionalLabelKeys(), requiredLabelValues, optionalLabelValues,	1✔
178	instrumentData.getOptionalLabelsBitSet());	1✔
179	ObservableLongMeasurement gauge = (ObservableLongMeasurement) instrumentData.getMeasure();	1✔
180	gauge.record(value, attributes);	1✔
181	}	1✔
182
183	@Override
184	public Registration registerBatchCallback(Runnable callback,
185	CallbackMetricInstrument... metricInstruments) {
186	List<ObservableMeasurement> measurements = new ArrayList<>(metricInstruments.length);	1✔
187	for (CallbackMetricInstrument metricInstrument: metricInstruments) {	1✔
188	MeasuresData instrumentData = measures.get(metricInstrument.getIndex());	1✔
189	if (instrumentData == null) {	1✔
190	// Disabled metric
191	continue;	1✔
192	}
193	if (!(instrumentData.getMeasure() instanceof ObservableMeasurement)) {	1✔
194	logger.log(Level.FINE, "Unsupported metric instrument type : {0} {1}",	×
195	new Object[] {metricInstrument, instrumentData.getMeasure().getClass()});	×
196	continue;	×
197	}
198	measurements.add((ObservableMeasurement) instrumentData.getMeasure());	1✔
199	}
200	if (measurements.isEmpty()) {	1✔
201	return () -> { };	1✔
202	}
203	ObservableMeasurement first = measurements.get(0);	1✔
204	measurements.remove(0);	1✔
205	BatchCallback closeable = openTelemetryMeter.batchCallback(	1✔
206	callback, first, measurements.toArray(new ObservableMeasurement[0]));	1✔
207	return closeable::close;	1✔
208	}
209
210	@Override
211	public void updateMeasures(List<MetricInstrument> instruments) {
212	synchronized (lock) {	1✔
213	if (measures.size() >= instruments.size()) {	1✔
214	// Already up-to-date
215	return;	×
216	}
217
218	List<MeasuresData> newMeasures = new ArrayList<>(instruments.size());	1✔
219	// Reuse existing measures
220	newMeasures.addAll(measures);	1✔
221
222	for (int i = measures.size(); i < instruments.size(); i++) {	1✔
223	MetricInstrument instrument = instruments.get(i);	1✔
224	// Check if the metric is disabled
225	if (!shouldEnableMetric(instrument)) {	1✔
226	// Adding null measure for disabled Metric
227	newMeasures.add(null);	1✔
228	continue;	1✔
229	}
230
231	BitSet bitSet = new BitSet(instrument.getOptionalLabelKeys().size());	1✔
232	if (optionalLabels.isEmpty()) {	1✔
233	// initialize an empty list
234	} else {
235	List<String> labels = instrument.getOptionalLabelKeys();	1✔
236	for (int j = 0; j < labels.size(); j++) {	1✔
237	if (optionalLabels.contains(labels.get(j))) {	1✔
238	bitSet.set(j);	1✔
239	}
240	}
241	}
242
243	int index = instrument.getIndex();	1✔
244	String name = instrument.getName();	1✔
245	String unit = instrument.getUnit();	1✔
246	String description = instrument.getDescription();	1✔
247
248	Object openTelemetryMeasure;
249	if (instrument instanceof DoubleCounterMetricInstrument) {	1✔
250	openTelemetryMeasure = openTelemetryMeter.counterBuilder(name)	1✔
251	.setUnit(unit)	1✔
252	.setDescription(description)	1✔
253	.ofDoubles()	1✔
254	.build();	1✔
255	} else if (instrument instanceof LongCounterMetricInstrument) {	1✔
256	openTelemetryMeasure = openTelemetryMeter.counterBuilder(name)	1✔
257	.setUnit(unit)	1✔
258	.setDescription(description)	1✔
259	.build();	1✔
260	} else if (instrument instanceof DoubleHistogramMetricInstrument) {	1✔
261	openTelemetryMeasure = openTelemetryMeter.histogramBuilder(name)	1✔
262	.setUnit(unit)	1✔
263	.setDescription(description)	1✔
264	.build();	1✔
265	} else if (instrument instanceof LongHistogramMetricInstrument) {	1✔
266	openTelemetryMeasure = openTelemetryMeter.histogramBuilder(name)	1✔
267	.setUnit(unit)	1✔
268	.setDescription(description)	1✔
269	.ofLongs()	1✔
270	.build();	1✔
271	} else if (instrument instanceof LongGaugeMetricInstrument) {	1✔
272	openTelemetryMeasure = openTelemetryMeter.gaugeBuilder(name)	1✔
273	.setUnit(unit)	1✔
274	.setDescription(description)	1✔
275	.ofLongs()	1✔
276	.buildObserver();	1✔
277	} else if (instrument instanceof LongUpDownCounterMetricInstrument) {	1✔
278	openTelemetryMeasure = openTelemetryMeter.upDownCounterBuilder(name)	1✔
279	.setUnit(unit)	1✔
280	.setDescription(description)	1✔
281	.build();	1✔
282	} else {
283	logger.log(Level.FINE, "Unsupported metric instrument type : {0}", instrument);	×
284	openTelemetryMeasure = null;	×
285	}
286	newMeasures.add(index, new MeasuresData(bitSet, openTelemetryMeasure));	1✔
287	}
288
289	measures = newMeasures;	1✔
290	}	1✔
291	}	1✔
292
293	private boolean shouldEnableMetric(MetricInstrument instrument) {
294	Boolean explicitlyEnabled = enableMetrics.get(instrument.getName());	1✔
295	if (explicitlyEnabled != null) {	1✔
296	return explicitlyEnabled;	1✔
297	}
298	return instrument.isEnableByDefault() && !disableDefaultMetrics;	1✔
299	}
300
301
302	private Attributes createAttributes(List<String> requiredLabelKeys,
303	List<String> optionalLabelKeys,
304	List<String> requiredLabelValues, List<String> optionalLabelValues, BitSet bitSet) {
305	AttributesBuilder builder = Attributes.builder();	1✔
306	// Required Labels
307	for (int i = 0; i < requiredLabelKeys.size(); i++) {	1✔
308	builder.put(requiredLabelKeys.get(i), requiredLabelValues.get(i));	1✔
309	}
310	// Optional labels
311	for (int i = bitSet.nextSetBit(0); i >= 0; i = bitSet.nextSetBit(i + 1)) {	1✔
312	if (i == Integer.MAX_VALUE) {	1✔
313	break; // or (i+1) would overflow	×
314	}
315	builder.put(optionalLabelKeys.get(i), optionalLabelValues.get(i));	1✔
316	}
317	return builder.build();	1✔
318	}
319
320	static final class MeasuresData {
321	final BitSet optionalLabelsIndices;
322	final Object measure;
323
324	MeasuresData(BitSet optionalLabelsIndices, Object measure) {	1✔
325	this.optionalLabelsIndices = optionalLabelsIndices;	1✔
326	this.measure = measure;	1✔
327	}	1✔
328
329	public BitSet getOptionalLabelsBitSet() {
330	return optionalLabelsIndices;	1✔
331	}
332
333	public Object getMeasure() {
334	return measure;	1✔
335	}
336	}
337
338	}

grpc / grpc-java / #19975

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