Windows Azure Workflows Manager services was shipped together with Service Bus for Windows Server as part of the major SharePoint 2013 release. Microsoft workflow manager is built to host and manage workflows in a multi-tenant environment at a high scale, such as Windows Azure.In this session, Sam will give an architectural overview of Workflow Manager and position it in various scenarios. It will also be compared WCF Workflow Services. The concepts of custom activities, deployment, management and workflow hierarchy will be explained. A cloud-based workflow solution will be demonstrated, showing integration between Windows Azure Service Bus, Workflow Manager, Windows Azure BizTalk Services and on premises systems. After the session, attendees should be able to understand the capabilities of Workflow Manager and should have seen how to build distributed workflows in a scalable cloud environment. BizTalk Summit 2014, London March 03-04 Brought to you by BizTalk360

1. brought to you by
Windows Azure Workflows,
a prediction
SAM VANHOUTTE

2. Nice to meet you
SamVANHOUTTE
CTO
6 year - BizTalkV-TSP
1st year - Integration MVP
sam.vanhoutte@codit.eu
+32 474 849 993
@SamVanhoutte
be.linkedin.com/in/samvanhoutte/
> 60 Active integration customers
International Focus -
HQ in BEFocused on integration solutions
2000 Belgium
2004 France
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60 employees
> 50 consultants BizTalk certifiede-news + SoMe
2012 & 2013
Partner of the Year
Award Finalist
Application Integration

3. Agenda
• Microsoft & Workflow – a long history
• Workflow designer, activities
• Workflow Manager
• Architecture
• Multi-tenancy & isolation
• Pub / sub
• State machines
• Conclusions & future

4. Microsoft & Workflow
A bit of history

5. Workflow history
Oslo
Repository,
M, Quadrant
AppFabric
WCFWorkflow
Services
Azure
Workflow
Service Bus &
SharePoint
2004 > 2007 - 2010 2010 > 2013 >
BizTalk Server
XLANG/s
Modeling

6. The ART of Workflow*
* Copyright : Dave Cliffe : Program ManagerWorkflow
➔ Declarative authoring of
programs that coordinate
work, using:
➔ Activities
➔ Runtime
➔ Tooling

7. Workflow improvements in .NET 4.5
Authoring Improvements
Be more efficient when authoring your workflows
Versioning
Basic building blocks to enable building a versioning story
Runtime Enhancements
Improve runtime performance and extensibility

8. Scenario
AppFabricWorkflows & BizTalk
8
AppFabric WF
BizTalk orch.
Sentinet
Get
Create

9. Workflow Manager
An overview

10. Workflow Manager
10
Design goals
➔ Multi-tenancy
➔ High-density
➔ Isolation & security
➔ Biggest customer ?
Z-Hotel

11. What is Workflow Manager?
➔ Scale & Reliability
➔ Multi-tenancy
➔ Cloud-based Messaging
➔ WF4 Prog Model
HTTP &
HTTPS
WF Backend
(.EXE)
WF Gateway
(IIS)
.NET Client
Service Bus
WF Resources
Activity Prog Model
Core Runtime
Activity Prog Model

12. Architecture

13. Deployment diagram
13

14. Workflow Manager Infrastructure
IIS
One App Pool:
WorkflowMgmtPool
One site:
Workflow Management Site
Windows Services
WorkflowService Backend
ServiceBus Backend
ServiceBus Gateway
FabricHostSvc
SQL
Workflow Databases
• WFManagementDB
• WFInstanceManagementDB
• WFResourceManagementDB
Service Bus Databases
• SBManagementDB
• SBGatewayDatabase
• SBMessageContainerxx

15. Installing WF Manager
➔ Install
➔ UsingWEB Platform Installer (or download center)
➔ Supported on Windows Server 2012, Windows 8, AzureVMs
➔ Configure
➔ Using configuration wizard or PowerShell
➔ Create / Join a Farm (high availability / scale-out)
➔ Supported back-ends
➔ SQL Server (Express + higher) & SQL Azure
➔ Service Bus 1.0 forWindows Server (not service!)

16. Testing & Debugging

17. Microsoft.Workflow.TestServiceHost
17
➔ Part ofWorkflow ManagerTools forVisual Studio (2012 only!)
➔ TestService (console app)
➔ Deploy & run workflows in it
➔ AttachVisual Studio to the process
➔ Update exe.config
➔ Some limitations

18. Multi-tenancy
Through scopes & isolation

19. Scopes
➔ Workflow manager scope
➔ Dedicated service bus topic
➔ Gets created at deployment of first workflow
➔ “A scope is a named and securable
container for Activities,Workflows,
Instances, configuration and child
Scopes.”
Root
Tenant01
HRM
Sales
Tenant02
Production
TenantXX

20. Sandboxing
20
Workflow Manager 1.0Trusted Surface
➔ Set of trusted types & activities
➔ Fully declarative authoring
➔ Compositie custom activities possible
➔ Whitelisting custom activities possible
➔ AllowedTypes.xml (WFWebRootbin & Artifacts folder)
➔ Disable sandboxing
• Set-WFServiceConfiguration
–ServiceUri:https://server:12290
–Name:WorkflowServiceAllowUnsafeTypes
-Value:true

21. Sandboxing
.NET Data Types
• String
• DateTime & TimeSpan
• Int32 & Double
• Boolean
• Guid
• ICollection & IList
• IDictionary & KeyValuePair
• DynamicValue
• Exception
• Uri
WF Manager activities
• Dynamic Value
• Http Activities
• Pub/Sub Activities
• Time Activities
• Configuration & External
variables
• Data Type functions
System.Activities, except:
• InvokeMethod
• New
• Cast
• VisualBasicValue,
VisualBasicReference
• LambdaValue,
LambdaRefernce
• TransactionScope
• Persist
21
Workflow Manager 1.0Trusted Surface

22. Using complex data structures
➔ Recursive key-value pairs
➔ Address, using paths
➔ Customer/FirstName > John
➔ Company > Contoso
➔ Regions(2) > LA
22
DynamicValues
Name Value
Customer Name Value
FirstName John
LastName Doe
Age 42
Company Contoso
Regions EU
US
LA

23. External communication
Pub/Sub & Http activities

24. Http activities
24
➔ No ‘HttpReceive’ activities
➔ Use REST api
➔ or Pub/Sub activities
➔ or WorkflowClient
➔ Support for security tokens, REST services …

25. Pub/Sub activities
25
➔ Leveraging Service BusTopics & Subscriptions
Activities
➔ BuildMatchAllFilter activity > define filter
➔ Subscribe activity > create SB subscription behind the scenes
➔ ReceiveNotification
➔ With Filter > temporary subscription, deleted after 1st message
➔ Using SubscriptionHandle > subscription remains existing
➔ Unsubscribe (implicitly when subscriptionhandle out of scope)

26. Demo 01
Pub / Sub & Http activities
Integration withWABS
26

27. 27
Fancy
Order App
Order Process
Workflow Manager
BizTalk Services
Order Web API
On prem SQL databaseFTP Server
EDIFACT DESADV
ON COMPLETE
ADAPTER SERVICE

28. Demo 02
State machines
Twilio phone call orchestrated byWF Manager
28

29. Twilio phone call state machine
29
Twilio API
Flight call
State machine
Flight check Web API
Service bus topic
Tracking subscriptionPhone logger service
Phone front end
SignalR
SvcBus
Message
Pump

30. Level 3
Level 2
Level 1 Welcome
message
1. Check in
1. With
luggage
2. Without
luggage
2. Upgrade
flight
1. To
business
2. To 1st
class
Cancel
flight
1. Confirm 2. Leave
Contest : call <removed> (toll free)

31. Conclusions
 Workflow manager is multi-tenant &
cloud-ready platform
 Look out for upcoming BPM features by
theWABS team
 BPMN Support announced

32. Thank you!
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