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/*
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [https://neo4j.com]
*
* 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 org.neo4j.driver.internal.svm;
import com.oracle.svm.core.annotate.Substitute;
import com.oracle.svm.core.annotate.TargetClass;
import java.time.Clock;
import org.neo4j.driver.Config;
import org.neo4j.driver.MetricsAdapter;
import org.neo4j.driver.internal.DriverFactory;
import org.neo4j.driver.internal.metrics.DevNullMetricsProvider;
import org.neo4j.driver.internal.metrics.InternalMetricsProvider;
import org.neo4j.driver.internal.metrics.MetricsProvider;
import org.neo4j.driver.internal.metrics.MicrometerMetricsProvider;
@TargetClass(DriverFactory.class)
final class Target_org_neo4j_driver_internal_DriverFactory {
/**
* Substitutes metrics adapter in such a way that it falls back to off when Micrometer is not available.
*
* @param config Drivers config
* @param clock Clock to use
* @return A metrics provider, never null
*/
@Substitute
@SuppressWarnings("ProtectedMemberInFinalClass")
protected static MetricsProvider getOrCreateMetricsProvider(Config config, Clock clock) {
var metricsAdapter = config.metricsAdapter();
if (metricsAdapter == null) {
metricsAdapter = config.isMetricsEnabled() ? MetricsAdapter.DEFAULT : MetricsAdapter.DEV_NULL;
}
switch (metricsAdapter) {
case DEV_NULL -> {
return DevNullMetricsProvider.INSTANCE;
}
case DEFAULT -> {
return new InternalMetricsProvider(clock, config.logging());
}
case MICROMETER -> {
try {
@SuppressWarnings("unused")
var metricsClass = Class.forName("io.micrometer.core.instrument.Metrics");
return MicrometerMetricsProvider.forGlobalRegistry();
} catch (ClassNotFoundException e) {
return DevNullMetricsProvider.INSTANCE;
}
}
}
throw new IllegalStateException("Unknown or unsupported MetricsAdapter: " + metricsAdapter);
}
}
class MicrometerSubstitutions {}
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