Question

是否可以从firebase云功能访问bigquery数据？或者我们可以编写一个可以直接执行bigquery数据操作的云函数吗？

更新这是MyCode

const functions = require('firebase-functions');

const bigquery = require('@google-cloud/bigquery');


const admin = require('firebase-admin');


var serviceAccount = require("");


admin.initializeApp(functions.config().firebase);


exports.sendBigQueryData = functions.analytics.event('app_open').onLog(event => {


var bigQuery = BigQuery({ projectId:  });
    bigQuery.query({


        query: 'SELECT CAST(TIMESTAMP_ADD(TIMESTAMP_MICROS(event.timestamp_micros), INTERVAL 330 MINUTE) AS date) AS event_date, count(event.name) AS number_questions FROM ``, UNNEST(event_dim) AS event WHERE event.name="asked_question" GROUP BY event_date ORDER BY event_date DESC'
    }).then(function (results) {


        var ref = admin.database().ref('');

        var rows = results[0]; //get all fetched table rows
        rows.forEach(function(row){ //iterate through each row
            ref.push().set({ //write to the database, under the 'queryresults' node
                column1:row['col1'],
                column2:row['col2']
            });
        });
        //return result
    }).catch(function (error) {
        //return an error
    })
  });

ReferenceError：未定义BigQuery

at exports.sendBigQueryData.functions.analytics.event.onLog.event (/user_code/index.js:11:16)
at Object.<anonymous> (/user_code/node_modules/firebase-functions/lib/cloud-functions.js:59:27)
at next (native)
at /user_code/node_modules/firebase-functions/lib/cloud-functions.js:28:71
at __awaiter (/user_code/node_modules/firebase-functions/lib/cloud-functions.js:24:12)
at cloudFunction (/user_code/node_modules/firebase-functions/lib/cloud-functions.js:53:36)
at /var/tmp/worker/worker.js:695:26
at process._tickDomainCallback (internal/process/next_tick.js:135:7)

Answer 1

是的，可以从云功能中获取bigquery数据。您只需使用require()导入它：

const functions = require('firebase-functions');
const bigquery = require('@google-cloud/bigquery');

编辑：如果您的云功能没有实时数据库触发器，您还需要添加Admin SDK以便写入数据库：

const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);

然后在声明的云函数中运行查询：

var bigQuery = BigQuery({ projectId: 'YOUR-PROJECT-ID' });
    bigQuery.query({
        query: 'YOUR QUERY HERE'
    }).then(function (results) {
        var ref = admin.database().ref('queryresults');

        var rows = results[0]; //get all fetched table rows
        rows.forEach(function(row){ //iterate through each row
            ref.push().set({ //write to the database, under the 'queryresults' node
                column1:row['col1'],
                column2:row['col2']
            });
        });
        //return result
    }).catch(function (error) {
        //return an error
    });

Answer 2

Examples I've seen要求像这样“更新” BigQuery：

更改此行：

var bigQuery = BigQuery({ projectId:  });

对此：

var bigQuery = new BigQuery({ projectId:  });

如何从firebase云功能访问bigquery数据？

2 个答案: