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Integration between Micronaut and Kafka Messaging
/*
* Copyright 2017-2020 original 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
*
* https://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.micronaut.configuration.kafka.graal;
import com.oracle.svm.core.annotate.*;
import io.micronaut.core.reflect.InstantiationUtils;
import org.apache.kafka.common.metrics.KafkaMetric;
import org.apache.kafka.common.metrics.Metrics;
import org.apache.kafka.common.metrics.MetricsReporter;
import org.apache.kafka.common.record.CompressionType;
import org.apache.kafka.common.utils.AppInfoParser;
import org.graalvm.nativeimage.hosted.Feature;
import org.graalvm.nativeimage.hosted.RuntimeReflection;
import java.util.List;
import java.util.Map;
import java.util.zip.Checksum;
//CHECKSTYLE:OFF
@AutomaticFeature
final class ChecksumFeature implements Feature {
@Override
public void beforeAnalysis(BeforeAnalysisAccess access) {
Class> c = access.findClassByName("java.util.zip.CRC32C");
if (c != null) {
RuntimeReflection.registerForReflectiveInstantiation(c);
RuntimeReflection.register(c);
}
}
}
@TargetClass(className = "org.apache.kafka.common.utils.Crc32C$Java9ChecksumFactory")
@Substitute
final class Java9ChecksumFactory {
@Substitute
public Checksum create() {
return (Checksum) InstantiationUtils.instantiate("java.util.zip.CRC32C", getClass().getClassLoader());
}
}
// Replace unsupported compression types
@TargetClass(className = "org.apache.kafka.common.record.CompressionType")
final class CompressionTypeSubs {
// @Alias @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FromAlias)
// public static CompressionType LZ4 = CompressionType.GZIP;
@Alias @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FromAlias)
public static CompressionType SNAPPY = CompressionType.GZIP;
@Alias @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FromAlias)
public static CompressionType ZSTD = CompressionType.GZIP;
}
// Replace JMX metrics, no operable on GraalVM
@TargetClass(className = "org.apache.kafka.common.metrics.JmxReporter")
@Substitute
final class NoopReporter implements MetricsReporter {
@Substitute
public NoopReporter() {
}
@Substitute
public NoopReporter(String prefix) {
}
@Override
@Substitute
public void init(List metrics) {
}
@Override
@Substitute
public void metricChange(KafkaMetric metric) {
}
@Override
@Substitute
public void metricRemoval(KafkaMetric metric) {
}
@Override
@Substitute
public void close() {
}
@Override
@Substitute
public void configure(Map configs) {
}
}
@TargetClass(AppInfoParser.class)
final class AppInfoParserNoJMX {
@Substitute
public static void registerAppInfo(String prefix, String id, Metrics metrics, long nowMs) {
// no-op
}
@Substitute
public static void unregisterAppInfo(String prefix, String id, Metrics metrics) {
// no-op
}
}
//CHECKSTYLE:ON
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