Kenny Wolf Architect WCF and WF

Host (.exe, IIS/WAS,.NET Services, …) WF Runtime Extensions Tracking Persistence … … Tooling VS Designer VS Debugger Rehosted Designer Workflow Activity Library

Activities are the primitive abstraction for behaviorActivities are composable with other ActivitiesActivities have user-defined Variables for data storageActivities bind Arguments to in-scope Variables Activities define Arguments to declare the type of data that can flow into or out of an Activity State Machine Parallel Sequence Send Message Delay Receive Message Generate Order InArgument OutArgument InArgument OutArgument Process Order Send Report Variables

Control Flow Activities FlowchartSequentialState MachineRules Custom Activities SharePointDynamics Systems Center HPC Team Foundation Server Base Activity Library WCF Messaging DatabasePowerShell Error Handling Expressions Interop Utilities WF Primitives BPEL

Code void GetPassword(string password) { bool haveUser = State.Get("haveUser"); if (!haveUser) { throw new Exception(); } string user = State.Get("User"); Validate(user, password); } Code void GetPassword(string password) { Validate(user, password); } Code void GetUser(string user) { // validate haven't gotten user yet bool haveUser = State.Get("haveUser"); if (haveUser) { throw new Exception(); } State.Set("haveUser", true); State.Set("User", user); } Code void GetUser(string user) { } Code { string user = Console.ReadLine(); string password = Console.ReadLine(); Validate(user, password); } Control Flow string user = State.Get("User"); State Input State.Set("User", user); Input State Input Control Flow (More Code, More State)

Jared Jackson Microsoft Research

PanSTARRs (Astronomy) Neptune (Oceanography) Load/Merge Databases Execute on Clusters Monitor workflow execution Logging, Provenance, Faults

Composition Space Activity Library Workflow Library Data Options & Sharing

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