如何从 firebase 云功能访问 bigquery 数据?
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【中文标题】如何从 firebase 云功能访问 bigquery 数据?【英文标题】:how to access bigquery data from firebase cloud functions? 【发布时间】:2018-07-15 10:44:50 【问题描述】:是否可以从 firebase 云功能访问 bigquery 数据? 或者我们可以写一个可以直接对大查询数据进行操作的云函数?
更新: 这是我的代码
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:BigQuery 未定义
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)
【问题讨论】:
你应该在你的项目目录上运行npm install --save @google-cloud/bigquery
npm install --save @google-cloud/bigquery 也已经尝试过了!
您是否以管理权限运行它?
是的,我运行这个函数的这个项目有管理员权限
查看Related post
【参考方案1】:
是的,可以从 Cloud Function 访问 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:如果您的云函数没有实时数据库触发器,您还需要添加 Admin SDK 才能写入数据库:
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
然后在您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
);
【讨论】:
如果我想将此查询结果存储到我的实时数据库中,那么??? 我尝试了下面的代码,但遇到了下面的错误!请帮助解决此错误 我在 BigQuery 导入后删除了括号。请检查 我也删除了,但同样的错误即将到来。 BigQuery 出现错误未在 exports.sendBigQueryData.functions.analytics.event.onLog.event 中定义【参考方案2】:Examples I've seen 要求像这样实例化 BigQuery:
改变这一行:
var bigQuery = BigQuery( projectId: );
到这里:
var bigQuery = new BigQuery( projectId: );
【讨论】:
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