Building Hybrid Cloud Applications With the Service BusClemens VastersPrincipal Technical LeadMicrosoft Corporation

SVC18

In This Session> What is a hybrid cloud application?

> How to communicate across hosting sites.

> A familiar demo freed from “localhost-jail”.

> Patterns, practices & code to take home.

A (Familiar) Distributed App

Web Store Front

Web Backend

Service Tier

Profile DBCatalog DB

Restaurants

Menus

Tx Processing

TierOrder Processing Workflow

In-Store Tier

Payments and Discounts

In-Store Kiosk

Order Handling Workflow

WF State DB

Delivery Driver Mobile

UIOn-Device

Tier

Delivery Jobs and Status

Management & Diagnostics

What was DinnerNow.net, again?> Popular MS Sample

> Illustrates IIS7, ASP.NET Ajax, LINQ, WCF, WF, WPF, PowerShell, and .NET CF.

> Food Home-Delivery Site> Restaurants your area> One-stop shopping> End-to-end demo from

order to delivery> First published for NETFX

3.0 and updated for 3.5, 3.5 SP1

… and here’s why this is interesting …

• Existing code, not designed for the cloud• Things you can’t run in the cloud• Things you might not want to run in the cloud … in other words …

This is like your code!

The Flow.

Web Store Front

Web Backend

Service Tier

Profile DBCatalog DB

Restaurants

Menus

Tx Processing

TierOrder Processing Workflow

In-Store Tier

Payments and Discounts

In-Store Kiosk

Order Handling Workflow

WF State DB

Delivery Driver Mobile

UIOn-Device

Tier

Delivery Jobs and Status

1

2

3

DinnerNow.net customer browsing the site for yummy food.

1

Site requests information about Restaurants and Menus from the Backend Services

2

Restaurant and Menus queried from the Catalog Database

3

Web Backend

Service TierRestaurants

Menus

Tx Processing

Tier

Payments and Discounts

The Flow.

Web Store Front

Profile DBCatalog DB

Order Processing Workflow

In-Store Tier

In-Store Kiosk

Order Handling Workflow

WF State DB

Delivery Driver Mobile

UIOn-Device

Tier

Delivery Jobs and Status

1

2

3

DinnerNow.net customer wants to order food.

1

Site asks user to log on or register. Collects shipping address and credit card info.

2

Order submitted for processing.

3

Profile DB

Web Store Front

Web Backend

Service TierRestaurants

Menus

Tx Processing

Tier

Payments and Discounts

The Flow.

Catalog DB

Order Processing Workflow

In-Store Tier

In-Store Kiosk

Order Handling Workflow

WF State DB

Delivery Driver Mobile

UIOn-Device

Tier

Delivery Jobs and Status1 2

Order Processing Applies Charges, Discounts, Loyalty Points.

1

Order is routed to the fulfilling Restaurant(s)

2

Restaurant personnel interacts with Kiosk application, preparing order for delivery pickup

3

3

In-Store Kiosk

Profile DB

Web Store Front

Web Backend

Service TierRestaurants

Menus

Tx Processing

Tier

Payments and Discounts

The Flow.

Catalog DB

Order Processing Workflow

In-Store Tier

Order Handling Workflow

WF State DB

Delivery Driver Mobile

UIOn-Device

Tier

Delivery Jobs and Status3

Order Processing Computes Routes and Notifies Delivery Drivers

1 Driver is notified on mobile device and accepts route

2

Driver picks up the food at the restaurant and provides delivery status.

3

2

1

DriverRestaurantDinnerNow Inc.

CloudWhat runs where?

Web Store Front

Web BackEnd

Service Tier

Profile DBCatalog DB

Tx Processing

TierIn-Store Tier

In-Store Kiosk

WF State DB

Delivery Driver Mobile

UI

On-Device Tier

Management & Diagnostics

Web Role

Web Role

SQL Azure

SQL 2008SQL

Express

Windows 7

ServiceWindows

Server

2008 R2

Service

Windows 7

App

Windows

Phone

Device

Restaurant

DinnerNow Inc.

Cloud

What runs where?

Why is this hard?> How does the website get at the

personal profiles and credit-card data?> How does the website push the orders

out for processing?> How does the order process find and

push to the restaurants?> How do we push alerts to the drivers?> How do the drivers check in with the

restaurant?

Service Bus: Core Capabilities> Internet-scoped overlay-network bridging across

NATs and Firewalls with federated access control > Network Listen/Send from any Internet-Connected PC> Internet-scoped, per-endpoint Naming and Discovery> NAT/FW Traversal via TCP and HTTP Web Streams

Private Network Space

Internet Space

B

C

DA

Service Bus: Core Capabilities

> Transfer raw and structured data allowing for any common shape of communication> Raw Data, Text, XML, JSON, …> Datagrams, Sessions, Correlated Messages> Unicast, Multicast

Octet-StreamsText

JSON …

XML

…

A B

A B

A B

SOAP

XML-RPC

…

3 Key Service Bus Pattern Families> Eventing

> One-way communication> Unicast or Multicast> Immediate or temporally decoupled

> Service Remoting> RPC-style, Request/Response or Duplex> Contracts, Schemas, Structured Data

> Tunneling> Full-Duplex Tunneling of Raw Streams> TCP, Pipes, Proxies, …

Pattern Family 1: Eventing(Sessionless Unicast or Multicast Datagrams)

Windows Azure, Datacenter, Hosting, Amazon EC2, Google App Engine

“Worker Role” App Instance

AppInstance

Client Client Client Client Client Client

NATs

multicast

unicastunicastBuf

In-House Outsourced

Pattern Family 2: Service Remoting(e.g. session-bound, app-level ack’d document transfers + notifications)

Hosted

E-CommerceFront

Storage

Inventory / ShippingSystem

OrderingSystem

Storage

Storage

Hi-Fi Client Experience

PO SO Shipped

Order AcceptedOrder Processed

Ready

Delivered

ACK ACK

Web Client Experience

Pattern Family 3: Tunneling (session-bound, raw-binary transport tunneling)

Windows Azure, Datacenter, Hosting, Amazon EC2 (Windows)

AppInstance

On-Premise Data

NP Bridge

SQL Server

TDSPassthrough

ASP.NETADO.NET

NP Agent

ACS

On-Premise Infra

Socket BridgeExchange/Mail (SMTP/IMAP)

Active Directory (LDAP)System Center (SNMP)

…

Socket Agent

ACS

SocketPassthrough

Apps & Services

HTTP BridgeERP, CRM, Custom

Apps.NET, J2EE, ROR,

PHP…

J2EE, JDBC, JMS

HTTP/HTTPSPassthrough

w/ URI Rewriting

Summary> No cloud platform makes building

hybrid applications simpler than the Windows Azure platform.

> You use the tools you know, the technologies you know, and we’re taking care of the difficult stuff.

> http://windowsazure.com> clemensv@microsoft.com

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