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/*
* SonarQube
* Copyright (C) 2009-2025 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.telemetry.metrics;
import java.util.Collections;
import java.util.Set;
import java.util.stream.Collectors;
import org.sonar.telemetry.core.Granularity;
import org.sonar.telemetry.core.TelemetryDataProvider;
import org.sonar.telemetry.core.schema.InstallationMetric;
import org.sonar.telemetry.core.schema.LanguageMetric;
import org.sonar.telemetry.core.schema.Metric;
import org.sonar.telemetry.core.schema.ProjectMetric;
import org.sonar.telemetry.core.schema.UserMetric;
public class TelemetryMetricsMapper {
private TelemetryMetricsMapper() {
}
public static Set<Metric> mapFromDataProvider(TelemetryDataProvider<?> provider) {
switch (provider.getDimension()) {
case INSTALLATION -> {
return mapInstallationMetric(provider);
}
case PROJECT -> {
return mapProjectMetric(provider);
}
case USER -> {
return mapUserMetric(provider);
}
case LANGUAGE -> {
return mapLanguageMetric(provider);
}
default -> throw new IllegalArgumentException("Dimension: " + provider.getDimension() + " not yet implemented.");
}
}
private static Set<Metric> mapInstallationMetric(TelemetryDataProvider<?> provider) {
// Case 1: the provider has implemented getValues() and it is non‐empty
var multiValues = provider.getValues();
if (!multiValues.isEmpty()) {
return multiValues.entrySet().stream()
.map(entry -> new InstallationMetric(
provider.getMetricKey() + "." + entry.getKey(),
entry.getValue(),
provider.getType(),
provider.getGranularity()))
.collect(Collectors.toSet());
}
// Case 2: the provider has implemented getValue() and it is non‐empty
var singleValue = provider.getValue();
if (singleValue.isPresent()) {
return Collections.singleton(new InstallationMetric(
provider.getMetricKey(),
singleValue.orElse(null),
provider.getType(),
provider.getGranularity()));
}
// Case 3: the provider has not implemented getValue() or getValues(), or both are empty
if (provider.getGranularity() == Granularity.ADHOC) {
return Collections.emptySet();
} else {
// It's not clear whether we actually want to send a null metric in this case, but we do for now to be consistent with the previous implementation.
return Collections.singleton(new InstallationMetric(
provider.getMetricKey(),
null,
provider.getType(),
provider.getGranularity()));
}
}
// Note: Dimension.USER does not currently support getValue(). But we just silently ignore it if a provider tries to use it.
private static Set<Metric> mapUserMetric(TelemetryDataProvider<?> provider) {
return provider.getValues().entrySet().stream()
.map(entry -> new UserMetric(
provider.getMetricKey(),
entry.getValue(),
entry.getKey(),
provider.getType(),
provider.getGranularity()))
.collect(Collectors.toSet());
}
// Note: Dimension.PROJECT does not currently support getValue(). But we just silently ignore it if a provider tries to use it.
private static Set<Metric> mapProjectMetric(TelemetryDataProvider<?> provider) {
return provider.getValues().entrySet().stream()
.map(entry -> new ProjectMetric(
provider.getMetricKey(),
entry.getValue(),
entry.getKey(),
provider.getType(),
provider.getGranularity()))
.collect(Collectors.toSet());
}
// Note: Dimension.LANGUAGE does not currently support getValue(). But we just silently ignore it if a provider tries to use it.
private static Set<Metric> mapLanguageMetric(TelemetryDataProvider<?> provider) {
return provider.getValues().entrySet().stream()
.map(entry -> new LanguageMetric(
provider.getMetricKey(),
entry.getValue(),
entry.getKey(),
provider.getType(),
provider.getGranularity()))
.collect(Collectors.toSet());
}
}
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