将 log4j2 与 AWS Lambda 一起使用

Question

我在尝试将 AWS lambda 与 log4j2 一起使用时遇到以下错误。我遵循了在 https://github.com/aws/aws-lambda-java-libs/tree/master/aws-lambda-java-log4j2

ERROR StatusLogger 找不到 log4j2 配置文件。使用默认配置：仅将错误记录到控制台。将系统属性 'org.apache.logging.log4j.simplelog.StatusLogger.level' 设置为 TRACE 以显示 Log4j2 内部初始化日志记录。

有人可以帮忙吗？

Answer 1

我可以让它正常工作 - 让我们看看你的设置有什么不同。我正在使用 OpenJDK 11 和 Java 11 Lambda。我的 Lambda 处理程序如下所示：

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class LambdaHandler {
    private static final Logger logger = LogManager.getLogger(LambdaHandler.class);

    // your handler entry point may be different but that shouldn't matter
    public void handleRequest(InputStream inputStream, OutputStream outputStream, Context context) {
    }
}

我的pom.xml 中的依赖项是： com.amazonaws aws-lambda-java-core 1.2.0

    <dependency>
        <groupId>com.amazonaws</groupId>
        <artifactId>aws-lambda-java-log4j2</artifactId>
        <version>1.1.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.13.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>2.13.0</version>
    </dependency>

    <dependency>
        <groupId>com.github.edwgiz</groupId>
        <artifactId>maven-shade-plugin.log4j2-cachefile-transformer</artifactId>
        <version>2.8.1</version>
    </dependency>

shade 插件的build/plugins 部分是：

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>3.2.2</version>
            <configuration>
                <createDependencyReducedPom>false</createDependencyReducedPom>
                <transformers>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                        <manifestEntries>
                            <Multi-Release>true</Multi-Release>
                        </manifestEntries>
                    </transformer>
                    <transformer
                            implementation="com.github.edwgiz.mavenShadePlugin.log4j2CacheTransformer.PluginsCacheFileTransformer">
                    </transformer>
                </transformers>
            </configuration>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                </execution>
            </executions>
            <dependencies>
                <dependency>
                    <groupId>com.github.edwgiz</groupId>
                    <artifactId>maven-shade-plugin.log4j2-cachefile-transformer</artifactId>
                    <version>2.8.1</version>
                </dependency>
            </dependencies>
        </plugin>

当我的 Lambda 启动时，我会收到消息：

WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance.

我已经用谷歌搜索了这个，但还没有修复它。但是，它似乎并没有伤害任何东西。