Open a window, see the clouds - php|tek 2011

Open a Window, see the clouds

Rafael Dohmsphoto credit: Denis Grzetic

Wednesday, May 25, 2011

http://photo.net/photodb/user?user_id=1764350

http://photo.net/photodb/user?user_id=1764350

Rafael Dohms

PHP Evangelist and ZCE in Brazil and a very active member of the PHP Community. He helped found two PHP User Groups over the years and currently shares the lead of PHPSP. Developer, gamer and lover of code he also hosts Brazil’s first PHP Podcast: PHPSPCast.

Currently he works for MIH SWAT Team, a group of experts that provides technical knowledge to the MIH group as well as working on R&D in search of the new and exciting niches of the web. His role as a Senior PHP Developer is to code, train and aid other companies and to have fun doing so.

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edit:

Eli W

hite


PEEKING OUT THE WINDOW

•What is the Cloud?

•Why choose the Cloud?

• Let’s take a look at Windows Azure

• How does that affect my code?


WHAT IS THE CLOUD?not just another buzzword bingo word


REGULAR HOSTING

• Shared account, VPS or Local Machine

•One machine, one place

• Pay by month


REGULAR HOSTING

• Shared account, VPS or Local Machine

•One machine, one place

• Pay by month

Self


CLOUD COMPUTING

• Less “physical attachment”

• One or multiple machines or “instances”

• Geologically spread

• Pay per hour/usage/data

• “abstraction” of resources

• 3 Flavors: IaaS, PaaS, SaaS


Hardware/Network

Operating System

Software

Application

Data


Hardware/Network

Operating System

Software

Application

Data

UpgradingConfiguring

ApacheMySQL

Cooling Cabling

DevelopingDeploying

Storing Sharing


IaaS“Infrastructure as a Service”

Hardware/Network

Operating System

Software

Application

Data


IaaS“Infrastructure as a Service”

Hardware/Network

Operating System

Software

Application

Data

you

them


PaaS“Platform as a Service”

Hardware/Network

Operating System

Software

Application

Data


PaaS“Platform as a Service”

Hardware/Network

Operating System

Software

Application

Data

you

them


SaaS“Software as a Service”

Hardware/Network

Operating System

Software

Application

Data


SaaS“Software as a Service”

Hardware/Network

Operating System

Software

Application

Datayou

them


WHY CHOOSE THE CLOUD?What are the advantages of using the cloud?

X


time

traffic

THE UTILITY MODEL


time

traffic

peak

THE UTILITY MODEL


IaaS Paas SaaS

costs

server managment.

software management

product deploy


AVAILABILITY


SCALABILITYStateless Compute + Durable Storage


LET’S LOOK INSIDE


Fabric

StorageCompute

Windows Azure Overview


AppFabric

Fabric

developer

Middleware, used for developing, deploying and managing your applications


Fabric

StorageCompute


Compute

Web Role Worker Role VM Role

Web application running on top of

IIS

Background processing

Windows Server 2008 instance that can be loaded on

demand


Fabric

StorageCompute


Storage

Table Storage Blob Storage QueueSQL Azure

Compatible with SQL ServerStructured Storage Text and binary

dataMessaging between Web and Worker

CDN

Data Storage

Cached version of any resource in

storage with a URI


UP & RUNNING

• Requisites:

• IIS7 Tools

• Azure SDK (install DevAppFabric, the azure emulator)

• Command Line Tools

• Command line tools for PHP

for Development and Deployment


BASIC TOOLSET

• Command Line tools for PHP

• Packages applicationand runs in emulator, with simulated compute and storage.

• Azure Tools for Eclipse

•Makes most processes a click-through process and gives you a nice IDE


Developer Environm

entW

indow A

zure

CodeAzure Emulator (Dev fabric)

Packaging tools (command line or eclipse)

Azure(AppFabric)

SQLAzure Storage

Package + Service Configuration


Developer Environm

entW

indow A

zure



Azure(AppFabric)

SQLAzure Storage


PHP


Developer Environm

entW

indow A

zure



Azure(AppFabric)

SQLAzure Storage


PHP php package.php --project="twitter-azure" --target="c:\azure-build" --source="C:\twitter-azure" --defaultDoc="public/index.php" --phpRuntime="C:\Program Files (x86)\PHP\v5.3" --cleanRebuild --runDevFabric


Developer Environm

entW

indow A

zure



Azure(AppFabric)

SQLAzure Storage


PHP


THE GOOD

•REST APIs

• Storage

•Diagnostics

•Relational DB: SQL Azure

•Role Architecture


THE BAD

•Windows-only Management

•No Azure Emulator for non-Windows OS

•No Packaging Command Line tools for non-Windows OS


HOW DOES THAT AFFECT CODE?What tools can we use and how should we design our apps


WHAT DO I WORRY ABOUT?


Code



Code PHP on IIS/Windows




Architecture




Architecture

Scaling




Architecture

No Local StorageScaling




Architecture

No Local Storage Session sharingScaling




Architecture

No Local Storage

Worker Roles

Session sharingScaling




Architecture

No Local Storage

Worker Roles

Session sharing

Queues

Scaling




Architecture

Storage

No Local Storage

Worker Roles

Session sharing

Queues

Scaling




Architecture

Storage

No Local Storage

Worker Roles

Session sharing

Queues

What kind?

Scaling




Architecture

Storage

No Local Storage

Worker Roles

Session sharing

Queues

What kind?Table / Blob

Scaling




Architecture

Storage

No Local Storage

Worker Roles

Session sharing

Queues

What kind?Table / Blob Framework or PHP SDK

Scaling




Architecture

Storage

No Local Storage

Worker Roles

Session sharing

Queues

What kind?RelationalDatabase

Table / Blob Framework or PHP SDK

Scaling




Architecture

Storage

No Local Storage

Worker Roles

Session sharing

Queues

What kind?RelationalDatabase

Table / Blob

Migrate to SQL Azure

Framework or PHP SDK

Scaling



AZURE-READY FRAMEWORKS


WHAT MAKES IT COMPATIBLE?

Does it run on PHP on Windows?

Does it have API Handlers?

Does it offer MS SQL Compatibility?

Code

Tools

Database


• Blobs, Tables and Queues (CRUD operations)

• Helper Classes for HTTP transport, AuthN/AuthZ, REST and Error Management

• Manageability, Instrumentation and Logging support

• Not tested, but should work well.

Tools

Database


•MS-SQL Drivers* are compatible with SQLAzure

Powered by Doctrine:

Database

* Using pdo_sql_server, possibly pdo_dblib


• PHP code runs normally, in Azure so any framework will work.

• You will need other tools to communicate with resources like: DB, Queue, etc...

• These have been tested!


AZURE PHP SDK

• Services:

•Blob Storage

•Table Storage

•Queue Storage

•Diagnostic Tools

• Compatible with PHP 5+


GOING OUT THE WINDOW

• Sample Application: “Twitter RT Calculator”

• Objective: Analyse your latest tweets that were ReTweeted, and calculate stats based on locations and words.

• Show how to migrate:

• Database: MySQL > SQLAzure

• Move processing into a worker role using the Queue

Sample migration to the cloud


Twitter OAuth

Wait for it...


Twitter OAuth

Wait for it...

MySQL


Twitter OAuth

Wait for it...

Results

MySQL


Twitter OAuth

Don’t call me, i’ll call you


Twitter OAuth


Queue


Twitter OAuth


Worker

Queue


Twitter OAuth


Worker

SQLAzure

Queue


Twitter OAuth


Results

Worker

SQLAzure

Queue


Twitter OAuth


Results

Worker

SQLAzure

Queue

WorkerWorkerWorkerWorkerWorkerWorkerWorkerWorkerWorkerWorker


USING SQLAZURE

doctrine.dbal.connection_options: driver: pdo_sqlsrv dbname: twitter-sample-app host: pl69qjwy8k.database.windows.net port: 1433 user: rdohmsDemo@pl69qjwy8k password: *password*

PDO MSSQL Driver


LINE THEM UP IN THE QUEUE //Add user to our Queue $qItem = new \stdClass(); $qItem->twitter_handle = $twitterInfo->screen_name; $qManager = new Azure\Queue($this->getApp()->getConfig('azure')); $qManager->addToQueue($qItem);



$this->client = new \Zend_Service_WindowsAzure_Storage_Queue( $qConfig['host'], $qConfig['accountName'], $qConfig['accountKey'] );

$this->queue = $this->getQueueInstance($queueName); __contruct()



$this->client = new \Zend_Service_WindowsAzure_Storage_Queue( $qConfig['host'], $qConfig['accountName'], $qConfig['accountKey'] );

$this->queue = $this->getQueueInstance($queueName);

public function addToQueue($item) { $this->client->putMessage($this->queue->name, serialize($item)); }

__contruct()


FIRST COME, FIRST SERVED

while (true){ try{ $this->logAction("Checking for messages..."); //Read Queue $qMessage = $qManager->getMessage();

//If no message, sleep for 3 seconds and try again if ($qMessage === null){ $this->logAction("No pending messages..."); sleep(3); continue; }

//Retrieve User {... doctrine query for stored twitter handle ...}

//Clear Message $this->logAction("Removing message form queue..."); $qManager->deleteMessage($qMessage);

//Process User $this->processUser($user);

//Warn User $this->sendWarning($user);

} catch (\Exception $e) { $this->logAction("Exception found:" .$e->getMessage()); } $this->logAction("Initiating sleep for next loop."); sleep(2); }










public function getMessage() { $messages = $this->client->getMessages($this->queue->name, 1); if (count($messages) > 0){ $qMessage = array_shift($messages); $message = new \stdClass(); $message->qMessage = $qMessage; $message->decoded = unserialize($qMessage->messagetext); return $message; } return null; }










public function getMessage() { $messages = $this->client->getMessages($this->queue->name, 1); if (count($messages) > 0){ $qMessage = array_shift($messages); $message = new \stdClass(); $message->qMessage = $qMessage; $message->decoded = unserialize($qMessage->messagetext); return $message; } return null; }

array( 'messageid' => $messageId, 'insertiontime' => $insertionTime, 'expirationtime' => $expirationTime, 'popreceipt' => $popReceipt, 'timenextvisible' => $timeNextVisible, 'dequeuecount' => $dequeueCount, 'messagetext' => $messageText );










After 20 seconds, message goes back into Queue


GOING OUT THE WINDOW

• See all changes: github.com/rdohms/Sample-Azure-App

• Compare these branches:

non-cloud-version x cloud-designed-version


LOOKING BACK BEFORE CLOSING THE WINDOW

• Found out what is the Cloud

• Looked at reasons on why to choose the Cloud

•We took a look at Windows Azure

• Peaked at how it affects our code?


FURTHER READING...

PHP Development in the Cloud

ISBN: 9780981034522Pages: 172Authors: Ivo Jansch and Vito Chin

http://bit.ly/i9Awk0




GET STARTED, GET HELP• Get a free account: WindowsAzurePass.com

•Talk to the Microsoft guys out in the Hall

•Ask them about pricing options

http://azurephp.comhttp://phpazure.codeplex.com/

http://azurephptools.codeplex.com/http://www.ben-waine.co.uk/blog/php-azure

http://marvelley.com/category/php/php-on-azure/


http://azurephp.com

http://azurephp.com

http://phpazure.codeplex.com

http://phpazure.codeplex.com

http://azurephptools.codeplex.com

http://azurephptools.codeplex.com

http://www.ben-waine.co.uk/blog/php-azure

http://www.ben-waine.co.uk/blog/php-azure

THANK [email protected]

Feedback is very important, please visit: joind.in/3417

twitter.com/rdohmshttp://doh.ms

Questions?


mailto:[email protected]

mailto:[email protected]

http://doh.ms

http://doh.ms

Open a window, see the clouds - php|tek 2011

Technology

Transcript of Open a window, see the clouds - php|tek 2011