serverless .yml 环境变量问题

Question

我正在使用 Lambdas 和 Dynamo DB 进行无服务器练习的 this 页面。

我在“添加创建注释 API”部分，但在测试 API 时遇到问题命令：

serverless invoke local --function create --path mocks/create-event.json

产生此错误

Serverless: DOTENV: Loading environment variables from .env:
Serverless:      - tableName
Serverless: Bundling with Webpack...
error is : ResourceNotFoundException: Requested resource not found
    at Request.extractError (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/protocol/json.js:51:27)
    at Request.callListeners (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
    at Request.emit (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
    at Request.emit (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/request.js:683:14)
    at Request.transition (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/request.js:22:10)
    at AcceptorStateMachine.runTo (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/state_machine.js:14:12)
    at /Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/state_machine.js:26:10
    at Request.<anonymous> (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/request.js:38:9)
    at Request.<anonymous> (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/request.js:685:12)
    at Request.callListeners (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/sequential_executor.js:116:18)
    at Request.emit (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
    at Request.emit (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/request.js:683:14)
    at Request.transition (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/request.js:22:10)
    at AcceptorStateMachine.runTo (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/state_machine.js:14:12)
    at /Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/state_machine.js:26:10
    at Request.<anonymous> (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/request.js:38:9)
    at Request.<anonymous> (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/request.js:685:12)
    at Request.callListeners (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/sequential_executor.js:116:18)
    at callNextListener (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/sequential_executor.js:96:12)
    at IncomingMessage.onEnd (/Users/dannybyrne/notes-app-api/node_modules/aws-sdk/lib/event_listeners.js:307:13)
    at IncomingMessage.emit (events.js:215:7)
    at IncomingMessage.EventEmitter.emit (domain.js:476:20)
    at endReadableNT (_stream_readable.js:1183:12)
    at processTicksAndRejections (internal/process/task_queues.js:80:21) {
  message: 'Requested resource not found',
  code: 'ResourceNotFoundException',
  time: 2019-12-10T18:33:00.494Z,
  requestId: '4D2O3VOI437AE9MTH1M4UPGDUVVV4KQNSO5AEMVJF66Q9ASUAAJG',
  statusCode: 400,
  retryable: false,
  retryDelay: 28.999931507407407
}
{
    "statusCode": 500,
    "headers": {
        "Access-Control-Allow-Origin": "*",
        "Access-Control-Allow-Credentials": true
    },
    "body": "{\"status\":false}"
}

我已将 .env 文件编辑为

tableName='notes'

虽然在 .yml 文件中说

# These environment variables are made available to our functions
  # under process.env.
  environment:
    tableName: notes

我假设这意味着在 create.js 文件中，在 params 对象下

TableName: process.env.tableName,

说明书上说 “我们使用 process.env.tableName 从环境变量中读取 DynamoDB table 的名称。我们将在下面的 serverless.yml 中设置它。我们这样做是为了不必硬编码它在每个函数中。"

这是否意味着我不必在包含的 .env 文件中设置它？当我将此文件重命名为不包含在构建中时，它也会抛出一个错误要求它。当我在 .env 中定义 tableName 并将其设置为 'notes'，如 .yml 文件中定义的那样，并且是 dynamoDB 的名称 table，它会抛出上述错误。

我基本上是想弄清楚 hoew .yml 从 .env 中提取（或不提取）

Answer 1

是的，如果您在提供程序下定义变量，它将可用于所有函数。

serverless .yml 环境变量问题

serverless .yml environment variable issues

environment-variables

aws-lambda

serverless