从 Node.js 函数访问 Azure Synapse Analytics

问题描述

我正在尝试通过 Node.js 函数访问 Azure Synapse sql 池。我以此 article 作为基础并将身份验证方法切换为“azure-active-directory-msi-app-service”。

如果我运行该函数，我可以在函数 cmd 中看到 quertyText context.log，但不幸的是没有其他任何事情发生。它在没有任何输出的情况下运行。

我看不到任何其他 context.log 或从该函数获得任何响应。

const Request = require('tedious').Request;
const TYPES = require('tedious').TYPES;
const test = require('lodash')

module.exports = function (context,req) {
   //get the Query Parameter

   // Create connection to database
   const config = {
     authentication: {
         type: "azure-active-directory-msi-app-service"
     },server: "database.sql.azuresynapse.net",options: {
         database: "database",encrypt: true,port: 1433
     }
   };

   const connection = new Connection(config);

   // Create array to store the query results
   let result = [];
   let rowData = {};

   // req.query.color will be passed as a Query variable in the URL
   //const payload = [req.query.color];

   // Create query to execute against the database
   const queryText = "SELECT TOP (10) [id],[column1],[culomn2] FROM [dbo].[Table]";
   context.log(queryText);
   
   // Create Request object
   request = new Request(queryText,function(err) {
       context.log("Request")
       if (err) {
           // Error in executing query
           context.log.error(err);
           context.res.status = 500;
           context.res.body = "Error executing the query";
       } else {
           context.res = {
               status: 200,isRaw: true,body: result,headers: {
                   'Content-Type': 'application/json'
               }
           }
       }
       context.done();
   });

   // Manipulate the results and create JSON
   request.on('row',function(columns) {
       rowData = {};
       columns.forEach(function(column) {
           // IMPORTANT: Change the conversion logic here to adjust JSON format
           rowData[column.Metadata.colName] = column.value;
       });
       result.push(rowData);
   });

   connection.on('connect',function(err) {
       if (err) {
           // Error in connecting
           context.log.error(err);
           context.res.status = 500;
           context.res.body = "Error connecting to Azure Synapase";
           context.done();
       } else {
           // Connection succeeded
           connection.execsql(request);
       }
   });
}``` 

解决方法

这应该有效...

const Connection = require('tedious').Connection;
const Request = require('tedious').Request;
const TYPES = require('tedious').TYPES;

const config = {
    server: "SQL pool endpoint goes here",authentication: {
        type: "azure-active-directory-msi-app-service"
    },options: {
        encrypt: true,database: "pool name goes here",port: 1433
    }
}
var connection = new Connection(config);  

这假设您已将托管标识适当地分配为 SQL 池中的外部用户。我也有此更改的 PR，您可以跟踪 here