zipkin2.server.internal.cassandra3.ZipkinCassandra3StorageConfiguration Maven / Gradle / Ivy

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/*
 * Copyright The OpenZipkin Authors
 * SPDX-License-Identifier: Apache-2.0
 */
package zipkin2.server.internal.cassandra3;

import java.util.List;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Import;
import zipkin2.server.internal.ConditionalOnSelfTracing;
import zipkin2.storage.StorageComponent;
import zipkin2.storage.cassandra.CassandraStorage;
import zipkin2.storage.cassandra.CassandraStorage.SessionFactory;

/**
 * This storage accepts Cassandra logs in a specified category. Each log entry is expected to
 * contain a single span, which is TBinaryProtocol big-endian, then base64 encoded. Decoded spans
 * are stored asynchronously.
 */
@ConditionalOnClass(CassandraStorage.class)
@EnableConfigurationProperties(ZipkinCassandra3StorageProperties.class)
@ConditionalOnProperty(name = "zipkin.storage.type", havingValue = "cassandra3")
@ConditionalOnMissingBean(StorageComponent.class)
@Import(ZipkinCassandra3StorageConfiguration.TracingSessionFactoryEnhancer.class)
// This component is named .*Cassandra3.* even though the package already says cassandra3 because
// Spring Boot configuration endpoints only printout the simple name of the class
public class ZipkinCassandra3StorageConfiguration {
  @Bean SessionFactory sessionFactory() {
    return SessionFactory.DEFAULT;
  }
  @Bean @ConditionalOnMissingBean StorageComponent storage(
      ZipkinCassandra3StorageProperties properties,
      SessionFactory sessionFactory,
      @Value("${zipkin.storage.strict-trace-id:true}") boolean strictTraceId,
      @Value("${zipkin.storage.search-enabled:true}") boolean searchEnabled,
      @Value("${zipkin.storage.autocomplete-keys:}") List autocompleteKeys,
      @Value("${zipkin.storage.autocomplete-ttl:3600000}") int autocompleteTtl,
      @Value("${zipkin.storage.autocomplete-cardinality:20000}") int autocompleteCardinality) {
    return properties.toBuilder()
      .strictTraceId(strictTraceId)
      .searchEnabled(searchEnabled)
      .autocompleteKeys(autocompleteKeys)
      .autocompleteTtl(autocompleteTtl)
      .autocompleteCardinality(autocompleteCardinality)
      .sessionFactory(sessionFactory).build();
  }

  @ConditionalOnSelfTracing
  static class TracingSessionFactoryEnhancer  implements BeanPostProcessor, BeanFactoryAware {
    /**
     * Need this to resolve cyclic instantiation issue with spring when instantiating with tracing.
     *
     * Ref: Tracking down cause of Spring's "not
     * eligible for auto-proxying"
     */
    BeanFactory beanFactory;

    @Override public Object postProcessBeforeInitialization(Object bean, String beanName) {
      return bean;
    }

    @Override public Object postProcessAfterInitialization(Object bean, String beanName) {
      //if (bean instanceof SessionFactory && beanFactory.containsBean("tracing")) {
      //  SessionFactory delegate = (SessionFactory) bean;
      //  Tracing tracing = beanFactory.getBean(Tracing.class);
      //  return (SessionFactory) storage -> TracingSession.create(tracing, delegate.create(storage));
      //}
      return bean;
    }

    @Override public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
      this.beanFactory = beanFactory;
    }
  }
}