将 AWS SAM Local 与 docker 中的 dynamodb 连接起来 [英] connecting AWS SAM Local with dynamodb in docker
问题描述
我已经使用 AWS sam local 设置了一个 api 网关/aws lambda 对，并确认我可以在运行后成功调用它
I've set up an api gateway/aws lambda pair using AWS sam local and confirmed I can call it successfully after running
sam local start-api
然后我在 docker 容器中添加了一个本地 dynamodb 实例，并使用 aws cli 在其上创建了一个表
I've then added a local dynamodb instance in a docker container and created a table on it using the aws cli
但是，将代码添加到 lambda 以写入我收到的 dynamodb 实例:
But, having added the code to the lambda to write to the dynamodb instance I receive:
2018-02-22T11:13:16.172Z ed9ab38e-fb54-18a4-0852-db7e5b56c8cd 错误:无法写入表:{"message":"connect ECONNREFUSED0.0.0.0:8000","code":"NetworkingError","errno":"ECONNREFUSED","syscall":"connect","address":"0.0.0.0","port":8000,"region":"eu-west-2","hostname":"0.0.0.0","retryable":true,"time":"2018-02-22T11:13:16.165Z"}从命令写入事件:{"name":"test","geolocation":"xyz","type":"createDestination"} END请求 ID:ed9ab38e-fb54-18a4-0852-db7e5b56c8cd
2018-02-22T11:13:16.172Z ed9ab38e-fb54-18a4-0852-db7e5b56c8cd error: could not write to table: {"message":"connect ECONNREFUSED 0.0.0.0:8000","code":"NetworkingError","errno":"ECONNREFUSED","syscall":"connect","address":"0.0.0.0","port":8000,"region":"eu-west-2","hostname":"0.0.0.0","retryable":true,"time":"2018-02-22T11:13:16.165Z"} writing event from command: {"name":"test","geolocation":"xyz","type":"createDestination"} END RequestId: ed9ab38e-fb54-18a4-0852-db7e5b56c8cd
我在网上看到你可能需要连接到同一个 docker 网络，所以我创建了一个网络 docker network create lambda-local 并将我的启动命令更改为:
I saw online that you might need to connect to the same docker network so I created a network docker network create lambda-local and have changed my start commands to:
sam local start-api --docker-network lambda-local
和
docker run -v "$PWD":/dynamodb_local_db -p 8000:8000 --network=lambda-local cnadiminti/dynamodb-local:latest
但仍然收到相同的错误
sam local 正在打印 2018/02/22 11:12:51 将容器 98b19370ab92f3378ce380e9c840177905a49fc986597fef9ef589e624b4eac3 连接到网络
sam local is printing out 2018/02/22 11:12:51 Connecting container 98b19370ab92f3378ce380e9c840177905a49fc986597fef9ef589e624b4eac3 to network lambda-local
我正在使用以下方法创建 dynamodbclient:
I'm creating the dynamodbclient using:
const AWS = require('aws-sdk')
const dynamodbURL = process.env.dynamodbURL || 'http://0.0.0.0:8000'
const awsAccessKeyId = process.env.AWS_ACCESS_KEY_ID || '1234567'
const awsAccessKey = process.env.AWS_SECRET_ACCESS_KEY || '7654321'
const awsRegion = process.env.AWS_REGION || 'eu-west-2'
console.log(awsRegion, 'initialising dynamodb in region: ')
let dynamoDbClient
const makeClient = () => {
dynamoDbClient = new AWS.DynamoDB.DocumentClient({
endpoint: dynamodbURL,
accessKeyId: awsAccessKeyId,
secretAccessKey: awsAccessKey,
region: awsRegion
})
return dynamoDbClient
}
module.exports = {
connect: () => dynamoDbClient || makeClient()
}
并检查我的代码正在创建的 dynamodbclient
and inspecting the dynamodbclient my code is creating shows
DocumentClient {
options:
{ endpoint: 'http://0.0.0.0:8000',
accessKeyId: 'my-key',
secretAccessKey: 'my-secret',
region: 'eu-west-2',
attrValue: 'S8' },
service:
Service {
config:
Config {
credentials: [Object],
credentialProvider: [Object],
region: 'eu-west-2',
logger: null,
apiVersions: {},
apiVersion: null,
endpoint: 'http://0.0.0.0:8000',
httpOptions: [Object],
maxRetries: undefined,
maxRedirects: 10,
paramValidation: true,
sslEnabled: true,
s3ForcePathStyle: false,
s3BucketEndpoint: false,
s3DisableBodySigning: true,
computeChecksums: true,
convertResponseTypes: true,
correctClockSkew: false,
customUserAgent: null,
dynamoDbCrc32: true,
systemClockOffset: 0,
signatureVersion: null,
signatureCache: true,
retryDelayOptions: {},
useAccelerateEndpoint: false,
accessKeyId: 'my-key',
secretAccessKey: 'my-secret' },
endpoint:
Endpoint {
protocol: 'http:',
host: '0.0.0.0:8000',
port: 8000,
hostname: '0.0.0.0',
pathname: '/',
path: '/',
href: 'http://0.0.0.0:8000/' },
_clientId: 1 },
attrValue: 'S8' }
这个设置应该有效吗?我如何让他们互相交谈?
Should this setup work? How do I get them talking to each other?
---- 编辑----
---- edit ----
基于 Twitter 对话，值得一提的是(也许)我可以在 CLI 和 web shell 中与 dynamodb 进行交互
Based on a twitter conversation it's worth mentioning (maybe) that I can interact with dynamodb at the CLI and in the web shell
推荐答案
非常感谢 Heitor Lessa 回答我在 Twitter 上有一个示例存储库
Many thanks to Heitor Lessa who answered me on Twitter with an example repo
这给了我答案...
dynamodb 的 docker 容器在我的上下文中位于 127.0.0.1机器(这就是我可以与之交互的原因)
dynamodb's docker container is on 127.0.0.1 from the context of my machine (which is why I could interact with it)
SAM 本地的 docker 容器在我的上下文中位于 127.0.0.1机器
SAM local's docker container is on 127.0.0.1 from the context of my machine
但是他们不在彼此的上下文中的 127.0.0.1
But they aren't on 127.0.0.1 from each other's context
所以:https://github.com/heitorlessa/sam-local-python-hot-reloading/blob/master/users/users.py#L14
指出我将连接代码更改为:
Pointed me at changing my connection code to:
const AWS = require('aws-sdk')
const awsRegion = process.env.AWS_REGION || 'eu-west-2'
let dynamoDbClient
const makeClient = () => {
const options = {
region: awsRegion
}
if(process.env.AWS_SAM_LOCAL) {
options.endpoint = 'http://dynamodb:8000'
}
dynamoDbClient = new AWS.DynamoDB.DocumentClient(options)
return dynamoDbClient
}
module.exports = {
connect: () => dynamoDbClient || makeClient()
}
重要的几行是:
if(process.env.AWS_SAM_LOCAL) {
options.endpoint = 'http://dynamodb:8000'
}
从 SAM 本地 docker 容器的上下文中，dynamodb 容器通过其名称公开
我的两个启动命令最终为:
My two startup commands ended up as:
docker run -d -v "$PWD":/dynamodb_local_db -p 8000:8000 --network lambda-local --name dynamodb cnadiminti/dynamodb-local
和
AWS_REGION=eu-west-2 sam local start-api --docker-network lambda-local
这里唯一的变化是为 dynamodb 容器命名
with the only change here being to give the dynamodb container a name
这篇关于将 AWS SAM Local 与 docker 中的 dynamodb 连接起来的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
