配置Cassandra与micronaut框架从yaml

Question

我正在使用micronaut框架，并试图从应用程序配置cassandra数据访问。yml对于标准测试用例，我可以配置datastax驱动程序

cassandra:
    default:
        clusterName: "Test Cluster"
        contactPoint: "192.168.99.100"
        port: 9042
        maxSchemaAgreementWaitSeconds: 20
        ssl: false

然而，我找不到一种方法来提供与方法一起使用的配置。带凭证

我看到了https://github.com/micronaut-projects/micronaut-core/blob/dc8c423be1979817c9c8f53440f3b87e775523b2/configurations/cassandra/src/main/java/io/micronaut/configuration/cassandra/CassandraConfiguration.java

执行以下操作

 @ConfigurationBuilder(allowZeroArgs = true, prefixes = { "with", "add" })
    Cluster.Builder builder = Cluster.builder();

然而，withCredentials方法需要两个参数https://docs.datastax.com/en/drivers/java/2.0/com/datastax/driver/core/Cluster.Builder.html#withCredentials-爪哇。lang.String-java。串-

public Cluster.Builder withCredentials(String username,
                                       String password)

yaml如何为这种方法提供配置？

Answer 1

通过@graemem-rocher在https://github.com/micronaut-projects/micronaut-core/issues/1106中添加的新功能，我能够做到以下几点：

import com.datastax.driver.core.Cluster
import io.micronaut.context.ApplicationContext
import io.micronaut.context.event.BeanCreatedEvent
import io.micronaut.context.event.BeanCreatedEventListener
import org.slf4j.Logger
import org.slf4j.LoggerFactory

import javax.inject.Singleton

@Singleton
class ClusterBuilderListener implements BeanCreatedEventListener<Cluster.Builder> {
    private static final Logger LOG = LoggerFactory.getLogger(ClusterBuilderListener.class)

    @Override
    Cluster.Builder onCreated(BeanCreatedEvent<Cluster.Builder> event) {
        def builder = event.getBean()
        ApplicationContext applicationContext = (ApplicationContext) event.getSource()

        if(applicationContext.getEnvironment().getActiveNames().contains('pro') ){
            builder.withCredentials("username", "password")
        }
        return builder
    }
}