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While working together with Microsoft on the Windows Azure SDK for PHP, we found that we needed an popular example application hosted on Microsoft’s Windows Azure. Wordpress was an obvious choice, but not an obvious task. Learn more about Windows Azure, the PHP SDK that we developed, SQL Azure and about the problems we faced porting an existing PHP application to Windows Azure.
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Just another Wordpress weblog,but more cloudy
WUX211
Maarten Balliauw
@maartenballiauw
Who am I?• Maarten Balliauw• Antwerp, Belgium• www.realdolmen.com • Focus on web
• ASP.NET, ASP.NET MVC, PHP, Azure, VSTS, …• MVP ASP.NET
• Interested in interoperability• PHPExcel, PHPLinq, Windows Azure SDK for PHP, ...
• http://blog.maartenballiauw.be • http://twitter.com/maartenballiauw
Agenda
• Cloud computing?• Windows Azure?• Application architecture• Using PHP with Windows Azure• Wordpress• Resources• Q&A
What’s in the cloud?
Cloud Computing
What is Cloud Computing ?• What is cloud computing ?
• Offering infrastructure, platform and software as a service over the internet to a global market.
• Move on-premises management of non functional IT assets to a provider.
• Difference from traditional hostings• Sold on demand “pay as you grow”• Elastic scalability• Service is fully managed by the provider• End user centric (IW or developer)• Strong focus on integration (cloud-cloud or cloud-on-premises)
Definition of cloud (NIST)
• On-demand self service• Standardized access• Location independant resource
pooling• Rapid elasticity• Pay per use
IT as a ServicePrivate
(On-Premise)Infrastructure(as a Service)
Platform(as a Service)
Storage
Server HW
Networking
Servers
Databases
Virtualization
Runtimes
Applications
Security & Integration
Storage
Server HW
Networking
Servers
Databases
Virtualization
Runtimes
Applications
Security & Integration
Storage
Server HW
Networking
Servers
Databases
Virtualization
Runtimes
Applications
Security & Integration
You m
anage
Managed b
y v
endor
Managed b
y v
endor
You m
anage
You m
anage
Microsoft’s cloud
Windows Azure
The Windows Azure Platform• Windows Azure• SQL Azure• Windows Azure platform
AppFabric• Microsoft Codename “Dallas”• Microsoft Codename “Sydney”
Windows Azure
• Flexible application hosting• Lights-out service management
• Provide code & service model, hit ENTER
• Storage at massive scale• Blobs, tables, queues
Compute StorageManagement
There’s an SDK for this: http://phpazure.codeplex.com
Windows Azure
Windows Azure Data Storage
Account
Queue
Blob
Tables
Drives
Storage options
• Blobs, tables, queues• Windows Azure Drive (a.k.a. XDrive)• Virtual NTFS volume that can be mounted• .vhd format• Use existing NTFS API’s• Easier migration• Stored on blob storage provides quick
mount/unmount in other VM
SQL Azure
• Relational database as a service• Highly available, automatically maintained
• Extension of the SQL Server Data Platform
Database
Reporting Business Analytics Data Sync
There’s a driver for this: http://sqlsrvphp.codeplex.com
SQL Azure
• Relational database, provided as a service• Highly symmetrical development and tooling
experience (use TDS protocol and T-SQL)• Highly scaled out, on commodity hardware• Built on the SQL Server technology
foundation• High availability, DB provisioning, and DB
management are provided by the service
Windows Azure AppFabric
• Secure connections between services• Across organizational boundaries
• Claims-based access control
ServiceBus
AccessControl
There’s an SDK for this: http://dotnetservicesphp.codeplex.com/
Service Bus Overview
Windows Azure AppFabric - Service Bus
• Securely connect applications• Over the internet• Across any network topology (= across firewalls!)• Across organizational boundaries
• Primary application patterns• Eventing:
• Notify applications and/or devices
• Service Remoting: • Securely project on-premises services out to the cloud
• Tunneling: • App-to-app communication with NAT/Firewall traversal
• PortBridge - http://bit.ly/bCDrUs• Bridge TCP over Service Bus
A fun usage scenario…
Microsoft Codename “Dallas”
• Content brokerage and discovery platform
• Available as a CTP
Microsoft Codename “Dallas”
Information Services
Microsoft Codename “Sydney” - Connectivity
WINDOWS AZURE PLATFORM
Data Service
Service Bus
Access Control Service
ENTERPRISE
Code Name “Project Sydney”
Developer tools
• Development• Use your favourite editor
• Local debugging• Windows with IIS 7.x• Visual Studio• Windows Azure tools for Eclipse
• Packaging• Windows Azure SDK
• Deployment• Any browser
Your typical cloud applicationApplication architecture
Typical Architecture on Azure
Windows Azure Storage (Blob, Table, Queue)
VI P
Web Role
Worker Role
Service Unavailable
Web + Worker Role Service Model
Windows Azure Storage (Blob, Table, Queue)
Worker RoleWeb
Role
VI P
Web Role
Worker Role
Worker Role
Worker Role
Worker RoleService Still Available
How about that?PHP & Windows Azure
• It’s all about…
• Running PHP Code in Windows Azure
• Eclipse Tooling• Build, Test, Deploy PHP Projects• Create New or Use Existing PHP Projects
• Scaling PHP Apps
• Using Cloud Storage from PHP• Using Windows Azure Storage• Using SQL Azure
Using PHP with Windows Azure
Running PHP in Windows Azure• How to Do It
• Host in Web role (like .NET)• Supply PHP runtime• Point to runtime via FastCGI
configuration in• Web.config• Web.roleConfig
• Eclipse Tooling athttp://windowsazure4e.org does the above for you
PHP Web RoleInstance 2
VI P
Load
Bala
nce
r
PHP Web RoleInstance 1
PHP + Cloud Storage
PHPWeb Role
VI P
Load
Bala
nce
r
Windows Azure Storage
SQL Azure
PHP App
Windows Azure Platform
On-Premis
e
PHP with Windows Azure Storage• Windows Azure SDK for PHP at
http://phpazure.codeplex.com
• PHP programming model for Windows Azure Storage
• Features • PHP classes for Blobs, Tables & Queues• Store PHP sessions in Table Storage• File system wrapper for Blob Storage
PHP with SQL Azure
• SQL Server Driver for PHP at http://sqlsrvphp.codeplex.com/
• Supports PHP access to SQL Azure
• Features• Choose between SQL Server and SQL Azure by
changing connection string• Use from on-premise apps or in Windows Azure
PHP with AppFabric
• AppFabric SDK for PHP developers athttp://dotnetservicesphp.codeplex.com/
• Supports PHP on service bus and access control
• Features• Expose on-premise apps on an external endpoint
without opening firewall• Pub/sub scenario’s• …
Finally!
Wordpress
• Blogging engine• Widely used• Easy installation• Gazillion plugins• Huge community around it• Free and open-source
Wordpress
• Runs on top of MySQL• Has no database abstraction layer• So: only runs on MySQL• Windows Azure has Table Storage and
SQL Azure
• I feel lots of work coming…
But...
• Easy way out• Wordpress on Windows Azure• MySQL on-premise / at other hoster
• Medium way out• Wordpress on Windows Azure• MySQL as well
• Hard way out• Wordpress on Windows Azure• MySQL out, SQL Azure in
There are ways around!
The easy way out
PHPWeb Role
VI P
Load
Bala
nce
r
Windows Azure Storage
MySQL
Windows Azure Platform
On-Premise / hosted
The easy way out
• Fresh Windows Azure project in Eclipse
• Fresh Wordpress.org download• Point wp-config.php to some
MySQL server• Package & deploy
The medium way out
PHPWeb Role
VI P
Load
Bala
nce
r
Windows Azure Storage
Windows Azure Platform
On-Premise / hosted
WorkerRolerunningMySQL
• Fresh Windows Azure project in Eclipse• Fresh Wordpress.org download• “Windows Azure MySQL PHP Solution Accelerator”
• http://code.msdn.microsoft.com/winazuremysqlphp
• Some configuration• Some anger• Some configuration• Point wp-config.php to the above MySQL server• Package & deploy
The medium way out
• BUT!• Instance count!• Pricing!• (5 x 240 EUR / month adds up...)
• Easier migration, but at a cost...
The medium way out
• Yes, you can run MySQL on Windows Azure!
• More “solution accelerators”:• MySQL
• http://code.msdn.microsoft.com/winazuremysqlphp
• Memcached• http://code.msdn.microsoft.com/winazurememcached
• MediaWiki• http://code.msdn.microsoft.com/winazuremediawiki
• Tomcat• http://code.msdn.microsoft.com/winazuretomcat
So...
The hard way out
PHPWeb Role
VI P
Load
Bala
nce
r
Windows Azure Storage
SQL Azure
Windows Azure Platform
On-Premise / hosted
• Fresh Windows Azure project in Eclipse• Fresh Wordpress.org download• Point wp-config.php to SQL Azure• Package & deploy• Fail!• There’s no SQL Server / SQL Azure
support in Wordpress, remember?
The hard way out
• MySQL queries all over the place!• “Data layer” (wp-db.php) = very thin• Raw MySQL queries passed from app to db• Logging• Some other stuff
• That’s nowhere near a database abstraction...
Have you ever looked at Wordpress?
• Required:• Re-build wp-db.php using SQL Server Driver for PHP
• http://www.microsoft.com/sqlserver/2005/en/us/PHP-Driver.aspx
• Options...• Re-write every single query in Wordpress
• Future proof?• Insane!
• Build a query translation tool, rewriting queries on-the-fly• Future proof!• Insane!
Strategic options
• Hooks in Wordpress• Wp-contents/db.php• Wp-includes/wp-db.php
• Strategy• Create wp-db.php class on top of SQL Server Driver for
PHP• http://www.microsoft.com/sqlserver/2005/en/us/PHP-Driver.aspx
• Create custom DB schema, compatible with SQL Server• Build a query translation tool, rewriting queries on-the-fly
• Someone at Microsoft had this laying around
Here’s what we did...
• Resources• Images, other file uploads, ...
• Normally stored on server disk• But this may not survive on Windows Azure...
• Solution• Plugin using Windows Azure SDK for PHP• Storing everything on Blob Storage• Serving everything from Blob Storage
• There’s a CDN available!
But there’s also... resources
DemoIf the Internet works...
Learn more!
Resources
Resources• Windows Azure
http://www.azure.com
• Windows Azure SDK for PHPhttp://phpazure.codeplex.com
• SQL Server Driver for PHPhttp://sqlsrvphp.codeplex.com
• AppFabric SDK for PHP developershttp://dotnetservicesphp.codeplex.com
• PDChttp://microsoftpdc.com
• PHP Architect December 2009 issuehttp://www.phparch.com
• Steve Marxhttp://blog.smarx.com/
• Clemens Vastershttp://vasters.com/clemensv/
• Simon Guesthttp://simonguest.com/blogs/smguest
• My bloghttp://blog.maartenballiauw.be/category/Azure.aspx
• RealDolmen blogs is running on Azure!http://www.realdolmenblogs.com
• Windows Azure is• Operating system (computing & storage)• SQL Azure• AppFabric• Codename projects• Your application and skills
• Hybrid applications
• It’s not that hard to do
Conclusion
• Is the source code available?• No, not at this time.
• Do I need Visual Studio / Eclipse?• Only for local debugging.
• Do I need Windows & the Windows Azure SDK?• Only for local debugging.
Before skipping to Q&A...
Q & AMaarten Balliauwhttp://blog.maartenballiauw.be
A sua opinião é importante!Complete o questionário de avaliação e devolva-o à saida.