如何在调用Lambda时通过AWS SDK记录X-Amzn-Request-id？

完全可行，分两种场景处理：

1. 记录当前Lambda自身的执行请求ID #

Lambda执行环境会自动把当前请求的ID注入到上下文对象中，无需额外调用AWS SDK，直接从上下文提取即可：

Python示例 #

def lambda_handler(event, context):
    # 从上下文获取当前Lambda的请求ID
    current_request_id = context.aws_request_id
    print(f"当前Lambda请求ID: {current_request_id}")
    # 业务逻辑代码...
    return {"status": "success"}

Node.js示例 #

exports.handler = async (event, context) => {
    const currentRequestId = context.awsRequestId;
    console.log(`当前Lambda请求ID: ${currentRequestId}`);
    // 业务逻辑代码...
    return { status: "success" };
};

Java示例 #

import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;

public class MyLambdaHandler implements RequestHandler<Object, String> {
    @Override
    public String handleRequest(Object input, Context context) {
        String currentRequestId = context.getAwsRequestId();
        System.out.println("当前Lambda请求ID: " + currentRequestId);
        // 业务逻辑代码...
        return "success";
    }
}

2. 记录调用其他Lambda时的请求ID（即你示例中返回的ID） #

当你的Lambda通过AWS SDK调用另一个Lambda函数时，调用响应中会包含该请求的x-amzn-request-id，可以从响应元数据中提取：

Python（boto3）示例 #

import boto3

lambda_client = boto3.client('lambda', region_name='your-region')

def lambda_handler(event, context):
    # 调用目标Lambda
    invoke_response = lambda_client.invoke(
        FunctionName='target-lambda-function-name',
        Payload=b'{"input": "test"}'
    )
    # 从响应的元数据中提取请求ID
    invoke_request_id = invoke_response['SdkHttpMetadata']['AllHttpHeaders']['x-amzn-RequestId'][0]
    print(f"调用目标Lambda的请求ID: {invoke_request_id}")
    # 处理返回结果...
    return {"status": "success"}

Node.js（AWS SDK v3）示例 #

import { LambdaClient, InvokeCommand } from "@aws-sdk/client-lambda";

const lambdaClient = new LambdaClient({ region: 'your-region' });

exports.handler = async (event) => {
    const command = new InvokeCommand({
        FunctionName: 'target-lambda-function-name',
        Payload: Buffer.from(JSON.stringify({ input: "test" }))
    });
    
    const invokeResponse = await lambdaClient.send(command);
    // SDK v3中直接从$metadata获取请求ID
    const invokeRequestId = invokeResponse.$metadata.requestId;
    console.log(`调用目标Lambda的请求ID: ${invokeRequestId}`);
    // 处理返回结果...
    return { status: "success" };
};

内容的提问来源于stack exchange，提问作者RJK