io.opentelemetry.sdk.metrics.internal.aggregator.EmptyMetricData Maven / Gradle / Ivy
/*
* Copyright The OpenTelemetry Authors
* SPDX-License-Identifier: Apache-2.0
*/
package io.opentelemetry.sdk.metrics.internal.aggregator;
import io.opentelemetry.sdk.common.InstrumentationScopeInfo;
import io.opentelemetry.sdk.metrics.Aggregation;
import io.opentelemetry.sdk.metrics.data.Data;
import io.opentelemetry.sdk.metrics.data.MetricData;
import io.opentelemetry.sdk.metrics.data.MetricDataType;
import io.opentelemetry.sdk.resources.Resource;
/**
* This class is internal and is hence not for public use. Its APIs are unstable and can change at
* any time.
*/
public final class EmptyMetricData implements MetricData {
private static final EmptyMetricData INSTANCE = new EmptyMetricData();
private EmptyMetricData() {}
/**
* Get an empty instance of metric data. Empty metric data should not be used except as an
* indication that recordings were dropped via {@link Aggregation#drop()}.
*
* @return an empty MetricData.
*/
public static MetricData getInstance() {
return INSTANCE;
}
@Override
public Resource getResource() {
throw new UnsupportedOperationException("EmptyMetricData does not support getResource().");
}
@Override
public InstrumentationScopeInfo getInstrumentationScopeInfo() {
throw new UnsupportedOperationException(
"EmptyMetricData does not support getInstrumentationScopeInfo().");
}
@Override
public String getName() {
throw new UnsupportedOperationException("EmptyMetricData does not support getName().");
}
@Override
public String getDescription() {
throw new UnsupportedOperationException("EmptyMetricData does not support getDescription().");
}
@Override
public String getUnit() {
throw new UnsupportedOperationException("EmptyMetricData does not support getUnit().");
}
@Override
public MetricDataType getType() {
throw new UnsupportedOperationException("EmptyMetricData does not support getType().");
}
@Override
public Data getData() {
throw new UnsupportedOperationException("EmptyMetricData does not support getData().");
}
@Override
public boolean isEmpty() {
return true;
}
}