java - BIGQUERY - 如何创建与 Pentaho Data Integration (Spoon) 的连接？

Question

我尝试通过 Pentaho Data Integration 访问 BigQuery，但没有成功。

• 系统:OSX El Capitan
• Google BigQuery 身份验证方法:使用 .p12 key 的服务帐号

我已按照本教程进行操作，并且正在使用 OSX http://wiki.pentaho.com/display/EAI/Google+BigQuery

这就是我所做的:

1. 我将“kettle.zip 的依赖项”下载并解压缩到 PDI_FOLDER/libswt/osx64
2. 我下载了“bqjdbc-1.4-standalone.jar”并将其复制到 PDI_FOLDER/lib
3. 之后，我尝试使用新建>数据库连接>通用数据库> native (JDBC) 在数据集成中创建新连接

我按照本教程 https://code.google.com/p/starschema-bigquery-jdbc/wiki/JDBCURL 使用此参数配置了连接。所以参数是:

• 自定义连接 URL:jdbc:BQDriver:projectid(secretproject)?withServiceAccount=true
• 自定义驱动程序类名称:net.starschema.clouddb.jdbc.BQDrive
• 用户名:pentaho-data-integration@secretproject.iam.gserviceaccount.com
• 密码:/Users/luisfsns/Dropbox/Lendico/etl/marketing/lendico-pentaho-data-integration-googlebigquery.p12

我不知道的事情:

• 我的自定义连接 URL 名称正确吗？我应该提供什么作为项目参数？项目名称还是路径的 URL？有人能给我举个例子吗？
• 我是否应该使用任何其他身份验证方法(尽管是“服务帐户”)或任何其他类型的私钥(例如 .json)？
• 我的自定义驱动程序类名称正确吗？

有人可以帮助我吗？

这是我尝试测试创建的连接时的日志:

Error connecting to database [Teste] : org.pentaho.di.core.exception.KettleDatabaseException: Error occurred while trying to connect to the database

Driver class 'net.starschema.clouddb.jdbc.BQDrive' could not be found, make sure the 'Generic database' driver (jar file) is installed. net.starschema.clouddb.jdbc.BQDrive

org.pentaho.di.core.exception.KettleDatabaseException: Error occurred while trying to connect to the database

Driver class 'net.starschema.clouddb.jdbc.BQDrive' could not be found, make sure the 'Generic database' driver (jar file) is installed. net.starschema.clouddb.jdbc.BQDrive

at org.pentaho.di.core.database.Database.normalConnect(Database.java:428) at org.pentaho.di.core.database.Database.connect(Database.java:358) at org.pentaho.di.core.database.Database.connect(Database.java:311) at org.pentaho.di.core.database.Database.connect(Database.java:301) at org.pentaho.di.core.database.DatabaseFactory.getConnectionTestReport(DatabaseFactory.java:80) at org.pentaho.di.core.database.DatabaseMeta.testConnection(DatabaseMeta.java:2686) at org.pentaho.ui.database.event.DataHandler.testDatabaseConnection(DataHandler.java:546) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:313) at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:157) at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:141) at org.pentaho.ui.xul.swt.tags.SwtButton.access$500(SwtButton.java:43) at org.pentaho.ui.xul.swt.tags.SwtButton$4.widgetSelected(SwtButton.java:138) at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source) at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Display.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.notifyListeners(Unknown Source) at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source) at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source) at org.eclipse.jface.window.Window.runEventLoop(Window.java:820) at org.eclipse.jface.window.Window.open(Window.java:796) at org.pentaho.ui.xul.swt.tags.SwtDialog.show(SwtDialog.java:389) at org.pentaho.ui.xul.swt.tags.SwtDialog.show(SwtDialog.java:318) at org.pentaho.di.ui.core.database.dialog.XulDatabaseDialog.open(XulDatabaseDialog.java:116) at org.pentaho.di.ui.core.database.dialog.DatabaseDialog.open(DatabaseDialog.java:59) at org.pentaho.di.ui.spoon.delegates.SpoonDBDelegate.newConnection(SpoonDBDelegate.java:464) at org.pentaho.di.ui.spoon.delegates.SpoonDBDelegate.newConnection(SpoonDBDelegate.java:451) at org.pentaho.di.ui.spoon.Spoon.newConnection(Spoon.java:8728) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:313) at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:157) at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:141) at org.pentaho.ui.xul.jface.tags.JfaceMenuitem.access$100(JfaceMenuitem.java:43) at org.pentaho.ui.xul.jface.tags.JfaceMenuitem$1.run(JfaceMenuitem.java:106) at org.eclipse.jface.action.Action.runWithEvent(Action.java:498) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:545) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:490) at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:402) at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Display.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.notifyListeners(Unknown Source) at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source) at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source) at org.pentaho.di.ui.spoon.Spoon.readAndDispatch(Spoon.java:1319) at org.pentaho.di.ui.spoon.Spoon.waitForDispose(Spoon.java:7939) at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:9190) at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:654) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.pentaho.commons.launcher.Launcher.main(Launcher.java:92) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at apple.launcher.LaunchRunner.run(LaunchRunner.java:116) at apple.launcher.LaunchRunner.callMain(LaunchRunner.java:51) at apple.launcher.JavaApplicationLauncher.launch(JavaApplicationLauncher.java:52) Caused by: org.pentaho.di.core.exception.KettleDatabaseException: Driver class 'net.starschema.clouddb.jdbc.BQDrive' could not be found, make sure the 'Generic database' driver (jar file) is installed. net.starschema.clouddb.jdbc.BQDrive

at org.pentaho.di.core.database.Database.connectUsingClass(Database.java:522) at org.pentaho.di.core.database.Database.connectUsingClass(Database.java:4697) at org.pentaho.di.core.database.Database.normalConnect(Database.java:414) ... 70 more Caused by: java.lang.ClassNotFoundException: net.starschema.clouddb.jdbc.BQDrive at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at org.pentaho.di.core.database.Database.connectUsingClass(Database.java:497) ... 72 more

Custom URL :
jdbc:BQDriver:projectid(secretproject)?withServiceAccount=true Custom Driver Class:net.starschema.clouddb.jdbc.BQDrive

Answer 1

这个问题的答案可能不会令您满意，但我们开始吧。可以创建此连接，但提取存在错误，并且行流非常慢(Bigquery 处理任何内容都很快，但这种 JDBC 使得获取数据非常慢。

我在这里做的是一个Python 2.7脚本，用于将查询提取到表中，并将表提取到Google云存储上的csv文件中，然后下载该文件。

它真的很快，而且不会有很多错误。

这是您可以使用的 python 代码。 (您需要安装谷歌存储实用程序才能轻松地将文件从云端复制到您的计算机)

The SH code: (use in a shell script entry on your JOB)

#!/bin/bash
export PATH=${PATH}

# BOTO is the login manager for GsUtil
export BOTO_DISPLAYENV="/home/mromano/.boto"
export BOTO_CONFIG="/home/mromano/.boto"

rm /tmp/bigquery_extraction_*

#Run Big Query extraction script on python
python "$caminho/google_bigquery_extract_foo_bar.py"

#Give it some seconds to sync data to Google Cloud Storage
sleep 10

#Copy from Google Cloud Storage to local file
/usr/local/bin/gsutil -q cp gs://pentaho_exports/google_bigquery_extract_foo_bar.csv.gz /tmp/google_bigquery_extract_foo_bar.csv.gz

The python script: (create a table with query results, export table to CSV and delete the table)

import httplib2
import logging
logging.basicConfig()

from apiclient.discovery import build
from oauth2client.client import SignedJwtAssertionCredentials
from bigquery import get_client

# BigQuery project id as listed in the Google Developers Console.
project_id = 'ce______?_____8'

# Service account email address as listed in the Google Developers Console.
service_account = '5399951_____?_______73k@developer.gserviceaccount.com'

f = file('../../../../keys/bigquery_key.p12', 'rb')
key = f.read()
f.close()

credentials = SignedJwtAssertionCredentials(
    service_account,
    key,
    scope='https://www.googleapis.com/auth/bigquery')

http = httplib2.Http()
http = credentials.authorize(http)


client = get_client(project_id, credentials=credentials, service_account=service_account)

# Write to table
job = client.write_to_table("""SELECT * FROM 001234.TEST""",
                    'pentaho_export',
                  table='table_foo_bar',
                create_disposition='CREATE_IF_NEEDED',
                write_disposition='WRITE_TRUNCATE')
try:
    job_resource = client.wait_for_job(job, timeout=6000)
    #print job_resource
except BigQueryTimeoutException:
    print "Timeout"

# Exporting
job_export = client.export_data_to_uris( ['gs://pentaho_exports/foo_bar.csv.gz'],
                                   'pentaho_export',
                                   'table_foo_bar',
                   compression='GZIP',
                   field_delimiter='    ')
try:
    job_resource = client.wait_for_job(job_export, timeout=6000)
    #print job_resource
except BigQueryTimeoutException:
    print "Timeout"

# Delete an existing table.
deleted = client.delete_table('pentaho_export', 'table_foo_bar')

希望对您有所帮助。 =)