从 netlify 函数运行 fauna FQL 查询时出错

如何解决从 netlify 函数运行 fauna FQL 查询时出错

我正在尝试从 netlify 函数运行查询。该功能非常简单，它只是“更新”一个帖子：

exports.handler = async function (event,context,callback) {
  const faunadb = require('faunadb')

  const headers = {
    'Access-Control-Allow-Origin': '*','Access-Control-Allow-Headers': 'Content-Type','Access-Control-Allow-Methods': 'GET,POST,PUT,DELETE',}

  const q = faunadb.query
  const adminClient = new faunadb.Client({
    secret: process.env.FAUNADB_SERVER_SECRET,})

  const post = event.body

  const queryResult = await adminClient.query(
    q.If(
      q.Exists(q.Match(q.Index('post_uuid'),post.uuid)),q.Update(
        q.Select(['ref'],q.Get(q.Match(q.Index('post_uuid'),post.uuid))),{ data: post }
      ),q.Create(q.Collection('posts'),{ data: post })
    )
  )

  callback(null,{
    statusCode: 200,headers,body: '',})
}

查询使用 Fauna 的在线 shell 运行，脚本的所有其他部分似乎都在运行，但是当我运行查询时出现此错误并且 netlify CLI 崩溃：

Request from ::1: POST /.netlify/functions/savePost
{"level":"error","message":"End - Error:"}
{"errorMessage":"validation Failed","errorType":"BadRequest","level":"error"}
TypeError: Cannot read property 'join' of undefined
    at formatLambdaLocalError (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\src\utils\serve-functions.js:25:100)
    at handleErr (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\src\utils\serve-functions.js:29:55)
    at Context.callbackHandler [as callback] (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\src\utils\serve-functions.js:60:14)
    at Context.done (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\node_modules\lambda-local\build\lib\context.js:204:14)
    at Context.fail (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\node_modules\lambda-local\build\lib\context.js:211:10)
    at processticksAndRejections (node:internal/process/task_queues:93:5)
TypeError: Cannot read property 'join' of undefined
    at formatLambdaLocalError (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\src\utils\serve-functions.js:25:100)
    at handleErr (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\src\utils\serve-functions.js:29:55)
    at Context.callbackHandler [as callback] (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\src\utils\serve-functions.js:60:14)
    at Context.done (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\node_modules\lambda-local\build\lib\context.js:204:14)
    at Context.fail (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\node_modules\lambda-local\build\lib\context.js:211:10)
    at processticksAndRejections (node:internal/process/task_queues:93:5)

C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\node_modules\netlify-redirector\lib\redirects.js:116
      throw ex;
      ^
abort({}) at Error
    at jsstackTrace (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\node_modules\netlify-redirector\lib\redirects.js:1070:13)
    at stackTrace (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\node_modules\netlify-redirector\lib\redirects.js:1087:12)
    at process.abort (C:\Users\Oliver\scoop\persist\nodejs\bin\node_modules\netlify-cli\node_modules\netlify-redirector\lib\redirects.js:8502:44)
    at process.emit (node:events:376:20)
    at emit (node:internal/process/promises:202:22)
    at processpromiseRejections (node:internal/process/promises:223:25)
    at processticksAndRejections (node:internal/process/task_queues:94:32)
(Use `node --trace-uncaught ...` to show where the exception was thrown)

我在 netlify dev 运行这个：

系统 视窗 10 节点：v15.4.0 netlify cli: v2.69.11

解决方法

我发现您还可以将整个内容包装在 try/catch 中并返回错误。

exports.handler = async function (event,context,callback) {
  const faunadb = require('faunadb')

  const headers = {
    'Access-Control-Allow-Origin': '*','Access-Control-Allow-Headers': 'Content-Type','Access-Control-Allow-Methods': 'GET,POST,PUT,DELETE',}

  const q = faunadb.query
  const adminClient = new faunadb.Client({
    secret: process.env.FAUNADB_SERVER_SECRET,})

  const post = event.body

  try {
    const queryResult = await adminClient.query(
        q.If(
        q.Exists(q.Match(q.Index('post_uuid'),post.uuid)),q.Update(
            q.Select(['ref'],q.Get(q.Match(q.Index('post_uuid'),post.uuid))),{ data: post }
        ),q.Create(q.Collection('posts'),{ data: post })
        )
    )

    callback(null,{
        statusCode: 200,headers,body: '',})
  } catch (error) {
    callback(null,{
        statusCode: 500,body: JSON.stringify(error),})
  }
}

,

好吧，我是个白痴！如果有人遇到和我一样的问题，我只是发布我自己问题的答案。

首先（不知道为什么）看来你必须搬家

const faunadb = require('faunadb')

const q = faunadb.query
const adminClient = new faunadb.Client({
  secret: process.env.FAUNADB_SERVER_SECRET,})

在函数之外。

其次，查询失败是因为请求的主体，我称之为 post 实际上是一个字符串而不是一个对象（有点明显，但我没有注意到！）。我正在运行的查询需要将一个对象传递给 Create 或 Update，但由于我正在传递一个字符串而崩溃。

这有点烦人（也许是一个错误？）但是如果查询返回 BadRequest，netlify 就会崩溃。