我正在使用 localstack 进行本地开发。我有一个名为 readings 的 DynamoDB 表，我想从 lambda 函数插入项目。
我已经在 python 运行时部署了简单的 lambda 函数:
import os
import boto3
def lambda_handler(events, context):
DYNAMODB_ENDPOINT_URL = os.environ.get("DYNAMODB_ENDPOINT_URL")
dynamodb = boto3.resource("dynamodb", endpoint_url=DYNAMODB_ENDPOINT_URL)
readings_table = dynamodb.Table(DYNAMODB_READINGS_TABLE_NAME)
readings_table.put_item(Item={"reading_id": "10", "other": "test"})
但我收到错误:[ERROR] EndpointConnectionError:无法连接到端点 URL:“http://localstack:4569/”
我尝试了 localhost 和 localstack 以及端口:4566 和 4569 的组合。他们都失败了。
这是我用来启动 localstack 的 docker-compse 服务
localstack:
image: localstack/localstack:0.11.2
ports:
- 4566:4566
- 8080:8080
environment:
SERVICES: "dynamodb,sqs,lambda,iam"
DATA_DIR: "/tmp/localstack/data"
PORT_WEB_UI: "8080"
LOCALSTACK_HOSTNAME: localstack
LAMBDA_EXECUTOR: docker
AWS_ACCESS_KEY_ID: "test"
AWS_SECRET_ACCESS_KEY: "test"
AWS_DEFAULT_REGION: "us-east-1"
volumes:
- localstack_volume:/tmp/localstack/data
- /var/run/docker.sock:/var/run/docker.sock
# When a container is started for the first time, it will execute files with extensions .sh that are found in /docker-entrypoint-initaws.d.
# Files will be executed in alphabetical order. You can easily create aws resources on localstack using `awslocal` (or `aws`) cli tool in the initialization scripts.
# source: https://github.com/localstack/localstack/pull/1018/files#diff-04c6e90faac2675aa89e2176d2eec7d8R185
- ./localstack-startup-scripts/:/docker-entrypoint-initaws.d/
我必须在 lambda 中设置的正确端点 URL 是什么，以便我可以将请求发送到 localstack 的 DynamoDB？
最佳答案
根据 the docs LOCALSTACK_HOSTNAME 是一个只读环境变量:
LOCALSTACK_HOSTNAME: Name of the host where LocalStack services are available. Use this hostname as endpoint (e.g., http://${LOCALSTACK_HOSTNAME}:4566) in order to access the services from within your Lambda functions (e.g., to store an item to DynamoDB or S3 from a Lambda).
关于aws-lambda - localstack 的 Lambda 函数内 DynamoDB 的端点 URL，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/62196416/