Building Connected Systems:
Today and Tomorrow
Giuseppe Guerrasio
Senior .NET Developer
Developer & Platform Division
Microsoft
1
Agenda
• Service Orientation e Microsoft .NET
– Connected System
– Smart Client
• Web Services Architecture e Technology Roadmap
–
–
–
–
Fundamental
Web Service Enhancements
.NET 2.0
Indigo
2
.NET : Connected System
.NET è una tecnologia software che consente
l’interconnessione di un mondo di
informazioni, persone, sistemi e device
Windows
Server
System
Pocket
PC
Visual
Studio
My
Office
Services
System
Partner
Products
3
Web Service e Connected System:
Da Hardware Connesso a Applicazioni Connesse
PC
Applications
PC
Sistemi Operativi
astraggono l’
hardware
Applications
OperatIng System
Operating System
Hardware
Smart Devices
Hardware
XML Web Services
Web Service
Astraggono
Internet/Intranet
Servers
4
SOA dalla prospettiva Microsoft .NET:
Connected System
• Approccio non limitato ai servizi in quanto tali ma
omnicomprensivo
– Smart process : orchestratori di processi
• Servizi che invocano,aggregano e coordinano altri servizi in modo
sincrono od asincrono
– Smart Client Application
• Rich User Experience, interazione con più servizi, caching
intelligente, supporto offline, etc
– Smart Device
• Smart Phone, chioschi , teller,Portable Media center, etc
– Web User Interface
• Enterprise Portal, Internet Portal, etc
– Sistemi Automatici
• Applicazioni senza interfaccia, sistemi di monotoraggio, etc
5
Microsoft .NET
Connected System with XML Web service
Windows Server System
6
WS-Security
WS-Trust
WS-Federation
Reliability
WS-Reliable
Messaging
Advanced Messaging
WS-Transactions
WS-Coordination
WS-AtomicTransaction
WS-Addressing, WS-Eventing
Basic Messaging
XML
Transactions
, WS-Policy, WS-Discovery,
WS-Metadataexchane
Security
Advanced Metadata
Web Services Architecture
SOAP
XML, XSD, XPath
Transports
HTTP
7
Web Services Technology Roadmap
• Visual Studio
2005
WS-I
Complian
ce
SDM
8
.NET Connected System
Messaging Fundamental
• Supporto nell’intera piattaforma
– Windows Server System
– Office System
• Visual Studio e .NET Framework 1.1
– Supporto per SOAP 1.1, XML Schema, XML 1.0, WSDL, UDDI
– Service Development
•
•
•
•
•
•
•
XSD Authoring
Mappatura automatica Tipi
Generazione Automatica WSDL
Ambiente per il Web Hosting
Registrazione UDDI
Client Side UDDI Discovery e Binding
Client Side Proxy Generation
– Servizi Aggiuntivi
• Server Side: Transazioni,Caching, Handler Asincroni
• Client Side: Gestione Asincrona Automatica
9
Web Services Enhancements 2.0 (WSE)
• Supportato come add-on per Visual Studio e per il .NET Framework con gli
ultimi avanzamenti nelle capacità dei Web service
• SOAP Messaging (WS-Addressing)
• Web Services Security
– Firma digitale e cifratura del messaggio
– Supporto per differenti tipi di Token di autenticazione
• X509, Custom Binary, Username/Password, Kerberos, and XML Security
Token Support
– Supporto per WS-Trust e WS-SecureConversation
– Roles based authorization con integrazione nativa con la Windows
security
– Supporto per WS-SecurityPolicy
• Message-based programming model
– indipendenza dall’ Hosting environment
– Supporto per altri meccanismi di trasporto (HTTP, TCP)
10
Quale Tipologia di Client ?
Rich User
Experience
Developer
Productivity
Responsive
Small
Footprint
Easy Change
Management
Ease of
Deployment
11
Smart Client Architecture
Main Form
Web
Service
Service
Agent
Client
Web
Service
Proxy
Web Server
12
Smart Client Technology
• .NET Framework (Full & Compact)
• Windows Application
– Windows Forms
• Office Smart Client
– Office XML - InfoPath, WordML, ExcelML
– SmartTags & SmartDocuments
– Visual Studio Tools For Office - Word ed Excel
– Information Bridge Framework - Meta-Data Driven
Solution
• Hybrid
– Embedded Browser, Browser Host
13
Elementi Chiave nello Smart client
• Gestione della Sicurezza
– Caricamento ed Isolamento del codice
• Application Domain
– Impatto della Code Access Security
- Evidence, Permission, Policy
• Gestione del deployment
– “Push” Technology
• AD
• SMS
– Pull Technology
• No-Touch deployment
• Application Updater Block
• Custom
– Sviluppi Futuri : ClickOnce
14
metabase
.Net App
.Net App
.NET application
Domain
Domain
domain
ftp, smtp,
nntp
DLLhost.exe
DLLhost.exe
Isolated
In-proc
OOP App
Isolated
OOP App
apps
ISAPI filters
User mode
Kernel mode
15
Administration
W3WP.exe
Inetinfo.exe
WAS
metabase
ftp, smtp,
nntp
Configuration
manager
Isolated
W3WP.exe
W3WP.exe
W3WP.exe
Single
app
Multiple
apps
Application
pool manager
Web server
ISAPI ext
ISAPI ext
ISAPI
filters
ISAPI
filters
OOP App
Isolated
W3WP.exe
OOP App
SingleISAPI Ext
app
ISAPIISAPI
Ext
ISAPI extFilters
ISAPI
Filters
ISAPI
filters
User mode
Kernel mode
Listener
Response
cache
Sender
16
Connected System e .NET 2.0
• Supporto senza precendenti per lo Smart Client
– Tool RAD per lo sviluppo del client pensati per ambienti debolmente
connessi
– Nuovo modello per la gestione dei dati con ADO.NET 2.0
– Semplificazione del deployment :ClickOnce Deployment
– Nuovo modello per lo sviluppo di Smart Client integrati con Office
• Nuovo meccanismo per la gestione delle transazioni:
System.Transaction
• Supporto completo per le nuove funzionalità di SQL Server
2005
–
–
–
–
Supporto XML nativo
Integrazione con il CLR
Supporto per i Web Service Nativo
SQL Server Broker Service
17
Connected System e .NET 2.0
• Miglioramenti ed Aggiunte al supporto per i Web Service
– Supporto per SOAP 1.2
• Server side controllato via .config
• Client side Wsdl.exe supporta entrambi ,
SoapProtocolVersion come proprietà nel proxy
– Supporto automatico per il Basic Profile WS-I
– Event-based async programming model
• Utilizza XxxAsync per la chiamata e XxxCompleted
event
• Evento richiamato sul thread chiamante
• Sotituisce BeginXxx, EndXxx mantenuti per compatibilità
– Nel Proxy generate proprietà invece di fields
• Possibile il data binding!
18
Connected System e .NET 2.0
• Miglioramenti ed Aggiunte al supporto per i Web Service
– Type sharing tra i proxies
• Individua gli schemi equivalenti e genera un unico
CLR type
– IXMLSerializer esposto nativamente
• Possibilità di customizzare con proprio codice la
serializzazione
• SchemaImporterExtension
– Classe astratta che abilita la generazione di custom
code quando si importano schemi nel proxy
• Supporto automatico della compressione nel Proxy
– Disponibile anche client side la compressione oltre che
nativamente in II6
19
Enterprise Design Tool
• Tool a supporto della Service Oriented
Architecture
– Rende semplice impostare il progetto, la
security, la transazionalità i WS-Standard , etc
• Tool a supporto per l’Operation
– Disegno è specifiche della logical infrastructure
– Verifica dei settings delle applicazioni rispetto
alla logica dell’infrastruttura
• Inseriti nella Dynamic System Initiative
20
Dynamic System Initiative (DSI)
System Definition Model
Creare un blueprint live del system
Definire un
sistema
esistente o
nuovo
Gestire il
sistema in base
al SDM
Job
Merc.
Stage
SQL
Operations
Capabilities
Resources
Required
Design
per le
Operational
Operation
Policies
Shuttle
Feed
Store
DSS
Cache
HTTP
FTP
Alloca e configura automaticamente
risorse e configurazioni
SDM Document
SERVERS
STORAGE
NETWORKING
21
Cos’è Indigo
Explicit Contracts
Ubiquity
COM
Declarative Behavior
Rich Context
COM+
Durable Messaging
Transactional Messaging
MSMQ
Deep CLR Integration
Architettura Estendibile
.NET Remoting
Contratti Espliciti
XML/Data Orientation
ASMX
Indigo
22
Indigo Architecture
Application
Messaging
Services
Service Model
Messaging
Hosting Environments
23
Indigo Architecture
Dettaglio
Application
Messaging Services
Queuing
Routing
Eventing
Discovery
Service Model
Instance
Manager
Context
Manager
Data
Contract
Type
Integration
Declarative
Behaviors
Transacted
Methods
Messaging
Channels (Datagram, Reliable, Peer, …)
Policy
Engine
Transport Channels (IPC, HTTP, TCP…)
Channel
Security
Message
Encoder
Hosting Environments
ASP.NET
Avalon
.exe
NT Service
COM+
24
Channel Model
• Il Canale è il nuovo Socket
– Astrae il core I/O in Indigo
– SOAP Message-Oriented
– Supporta Datagram e Session
– Fortemente Estendibile
• Svolge, solo una parte della storia
– Contratti / Ad alto livello Metadati
– Servizi utilizzano l’infrastruttura di messaging
25
La Base per i Canali
• IChannel
• IOutputChannel
– void Send(Message message);
• IInputChannel
– Message Receive();
• IDuplexChannel : IInputChannel, IOutputChannel
• IRequestChannel
– Message Request(Message message);
• IReplyChannel
– IRequestContext ReceiveRequest();
• I*SessionChannel
26
Listener e Factory
• IChannelFactory
– Creazione Attiva di canali per un Servizio
• IChannel CreateChannel<T>(Uri to);
– Stackable
• IListenerFactory
– Legata ad un indirizzo di rete
– Converte Network Stream in Messaggi
– Content-Based Message Demux per il Listeners
• IListener
– Creazione di un canale dal Client
• IChannel AcceptChannel();
– ~ Ricorda qualcosa ?
27
Connecting e Accepting
1.
2.
3.
4.
5.
Service: CreateListener<IInputChannel>(filter, …)
Client: CreateChannel<IOutputChannel>
Client: IOutputChannel.Send(message)
Service: IListener<…>.AcceptChannel()
Service: IInputChannel.Receive()
IInputChannel
IListener
…
…
…
IChannelFactory
IOutputChannel
IListenerFactory
IChannelFactory
IOutputChannel
IListenerFactory
28
Service Runtime
Service
Dispatcher
A CLR type che implementa uno o più
ServiceContracts
Un meccanismo per effettuare il dispatch del
messaggio al metodo
Contract
Un meccanismo per “marcare” i type per
permettere i comportamenti in base ai contratti
Binding
Un meccanismo per esporre servizi con
contratto (via an IListenerFactory)
Listener Factory
Un I/O device per il listening dei messaggi
29
Hello, World!
Service
[ServiceBinding(Binding = “Http”, Transport = Transport.Http)]
[ServiceBinding(Binding = “Tcp”, Transport = Transport.Tcp)]
[ServiceContract]
public interface IConsole
{
[ServiceOperation]
void WriteLine(string text);
[ServiceOperation]
void Write(string text);
}
public class MyConsole : IConsole
{
public void WriteLine(string text)
{ Console.WriteLine(text); }
public void Write(string text)
{ Console.Write(text); }
}
30
Hello, World!
Client
[ServiceContract]
public interface IConsole
{
[ServiceOperation]
void WriteLine(string text);
[ServiceOperation]
void Write(string text);
}
public static void Main(string args[])
{
IConsole console = ProxyFactory.CreateProxy<IConsole>
(“http://www.microsoft.com/console”);
console.WriteLine(“Hello, World!”);
}
31
Indigo Channel Stack
IChannelFactory
IListenerFactory
Notifications
Notifications
Queues
Queues
Reliable Messaging
Reliable Messaging
Security
Security
Transports
Transports
Encoder
Encoder
32
Riepilogo
• La Service Orientation è la base per lo sviluppo di
Connected System
• La tecnologia .NET permette di utilizzare Connected
System basati sugli standard dei Web Services
• Approccio completo dal client ai server
• NET mette a disposizione da oggi una piattaforma
completa per lo sviluppo di sistemi Service Oriented
• Roadmap futura compatibile con l’esistente ed in linea con
l’evoluzione degli standard collegati ai Web Service
33
© 2004 Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.
34
Crescita .NET
• Running in più del 60% delle
Fortune 100
• Più di 70M di sistemi con
.NET Framework
• Strong developer ecosystem
• ISO standardization
• Forrest researh
– 56 % dei nuovi progetti in
Nord America con .NET
• Gartner
– Microsoft nel quadrante dei
Leader per Applicazioni
Enterprise
– Microsoft Leader per i Web
Service
Growth of ASP.NET (Netcraft)
350%
300%
250%
200%
150%
100%
50%
0%
Q202 to Q302
Q302 to Q402
Q402 to Q103
Q103 to Q203
35
Web-Services-Enabled Software
The Magic Quadrant is copyrighted 2004 by Gartner, Inc. and is reused with permission. Gartner’s permission to print or reference its
Magic Quadrant should not be deemed to be an endorsement of any company or product depicted in the quadrant. The Magic Quadrant is Gartner’s opinion and is an
analytical representation of a marketplace at and for a specific time period. It measures vendors against Gartner-defined criteria for a marketplace. The positioning of
vendors within a Magic Quadrant is based on the complex interplay of many factors. Gartner does not advise enterprises to select only those firms in the Leaders segment.
In some situations, firms in the Visionary, Challenger, or Niche Player segments may be the right match for an enterprise's requirements. Well-informed vendor selection
decisions should rely on more than a Magic Quadrant. Gartner research is intended to be one of many information sources including other published information and direct
analyst interaction. Gartner expressly disclaims all warranties, express or implied of fitness of this research for a particular purpose.
36
Service Oriented Architecture
Software vendor for mission-critical applications
40
39
34
35
30
25
19
20
15
12
10
8
7
6
5
5
0
Microsoft
IBM
Custom
Oracle
BEA
Open
Source
Sun
Altri
Mission-Critical Application Survey (Engagement: 220622840 — August 2004)
© 2004 Gartner, Inc. and/or its affiliates.
37
Web Service Performance
8 CPU Web Service Host
1486.53
1600.00
1400.00
8 CPU - J2EE
8 CPU
1.1
“It -is.Net
believed
that the high performance
results for .NET are due to the fact1076.95
that
Web Services were part of the core .NET
framework from the start and not added
features on top of an existing framework,
as is the case with J2EE. “
1200.00
1000.00
800.00
513.33
411.87
-Doculabs, April 2003
600.00
400.00
296.25
200.00
0.00
J2EE
App Server X
Windows 2000
Oracle 9i DB
J2EE
App Server Y
Win 2000
Oracle 9i DB
JBOSS
RH Linux 8.0
Oracle 9i DB
Source: Doculabs Web Service Benchmark, March 2003
.NET 1.1
.NET 1.1
Win 2003
Win 2003
Oracle 9i DB SQL Server 2000
38
Gli Analisti
• Giga
– Return of the Rich Clients
Organizations taking a service-oriented architectural (SOA) approach to
application development should standardize on a stand-alone rich client
technology since it is best suited to the dynamic consumption of Web
Services.
39
Gli Analisti
• Giga
– How to Decide Between a Browser-Based or
Rich Client
Recommendations
If applications demand any of the following, then choose a rich-client
for the user interface:
•Intensive data input with immediate validation
•Latency sensitive applications
•Direct data manipulation (sorting, filtering, etc.)
•Real-time animation/visualization
•Disconnected operations
•Consumption of Web Services
40