co.elastic.apm.agent.sdk.DynamicTransformer Maven / Gradle / Ivy
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* Licensed to Elasticsearch B.V. under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch B.V. licenses this file to you 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 co.elastic.apm.agent.sdk;
import co.elastic.apm.agent.sdk.internal.InternalUtil;
import net.bytebuddy.description.type.TypeDescription;
import net.bytebuddy.matcher.ElementMatcher;
import java.util.Collection;
import java.util.ServiceLoader;
public class DynamicTransformer {
private static final DynamicTransformerProvider transformer;
static {
transformer = InternalUtil.getServiceProvider(DynamicTransformerProvider.class);
}
/**
* Instruments a specific class at runtime with one or multiple instrumentation classes.
*
* Note that {@link ElasticApmInstrumentation#getTypeMatcher()} will be
* {@linkplain net.bytebuddy.matcher.ElementMatcher.Junction#and(ElementMatcher) conjoined} with a
* computed {@link ElementMatcher}{@code <}{@link TypeDescription}{@code >}
* that is specific to the provided class to instrument.
*
*
* @param classToInstrument the class which should be instrumented.
* @param instrumentationClasses the instrumentation which should be applied to the class to instrument.
*/
public static void ensureInstrumented(Class classToInstrument, Collection> instrumentationClasses) {
transformer.ensureInstrumented(classToInstrument, instrumentationClasses);
}
/**
* This is an internal class.
* Provides the implementation for the dynamic transformation.
*/
public interface DynamicTransformerProvider {
void ensureInstrumented(Class classToInstrument, Collection> instrumentationClasses);
}
}