agent workflows with wade
DESCRIPTION
Mini-tutorial presenting: The workflow metaphor Agent-based workflows WADE Framework Overview WADE Architecture Case studyTRANSCRIPT
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Agent Workflows with WADE
Márcio Fuckner1
1Université de Technologie de Compiègne, France
Multiagent System Development
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Outline
1 The workflow metaphor
2 Agent-based workflows
3 WADEOverviewArchitecture
4 The Factorial case studyPreparing the InfrastructureCreating the AgentCreating the WorkflowWADE Delegation ModelRunning sub-workflows
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Definition
WorkflowA workflow is the automation of a businessprocess, which artifacts, information and/or tasksare passed from one actor to another accordingto a set of procedural rules.[Workflow Management Coalition, 2013]
FormalismsMany formalisms exist to represent a workflow.Some examples are flow charts, UML activitydiagrams and finite state machine diagrams.
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Definition
WorkflowA workflow is the automation of a businessprocess, which artifacts, information and/or tasksare passed from one actor to another accordingto a set of procedural rules.[Workflow Management Coalition, 2013]
FormalismsMany formalisms exist to represent a workflow.Some examples are flow charts, UML activitydiagrams and finite state machine diagrams.
![Page 5: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/5.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
A workflow example
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Functional Areas
Figure: Source: [Caire, 2008]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Examples of Workflow DescriptionLanguages
BPELBusiness Process Execution Language.
• Keywords: SOA, WS oriented• More information: OASIS
(http://www.oasis-open.org)
XPDLXML Process Definition Language.
• Keywords: Visual modelling notations,XML based
• More information: Workflow ManagementCoalition (http://www.wfmc.org)
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Pros and Cons
Pros
• Extremely intuitive. Can be validated bydomain experts with no programming skills
• Self-documented• Execution steps are made explicit• Workflows are interpreted at runtime• Several infrastructure facilities
Cons
• Not suitable to deal with low-leveloperations
• Supporting tools not comparable with thoseavailable for normal code development
• Less efficient execution
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Pros and Cons
Pros
• Extremely intuitive. Can be validated bydomain experts with no programming skills
• Self-documented• Execution steps are made explicit• Workflows are interpreted at runtime• Several infrastructure facilities
Cons
• Not suitable to deal with low-leveloperations
• Supporting tools not comparable with thoseavailable for normal code development
• Less efficient execution
![Page 10: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/10.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Pros and Cons
Pros
• Extremely intuitive. Can be validated bydomain experts with no programming skills
• Self-documented• Execution steps are made explicit• Workflows are interpreted at runtime• Several infrastructure facilities
Cons
• Not suitable to deal with low-leveloperations
• Supporting tools not comparable with thoseavailable for normal code development
• Less efficient execution
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Bringing the workflow approach to theMultiagent world
Agent-based workflowsThe basic idea is to use theexpressiveness of the workflowmetaphor to improve the agentcommunication process.
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
What is WADE?
• is a software platforma based on JADE• A WADE application is also a JADE application• All JADE features are available in WADE too
• Allows the execution of tasks using the workflowmetaphor
• Adopted the XPDL meta-model to facilitateimport/export from/to a standard workflowrepresentation format
aFor more information: http://jade.tilab.com/wade/
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Main components
Figure: Source: [Telecom Italia, 2011b]
WADE and WOLFIn principle WADE supports“notepad-programming”, but it comeswith a graphical developmentenvironment called WOLF[Telecom Italia, 2011b].
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Architecture
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
A classroom case study using WADE
• Now, it’s time to develop asimple but complete applicationusing WADE ...
• ... from scratch !
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Formal Definition
• In mathematics, the factorial ofa non-negative integer n,denoted by n!, is the product ofall positive integers less than orequal n
• For example: 5! = 5 x 4 x 3 x 2x 1 = 120
• According to the rule, the valueof 0! is 1
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Implementing the application using theworkflow metaphor
NoteWe know ... The factorial problem could easily be implemented in one line, as theexample above in LISP:
(defun fa (n)(cond ((eq n 1) n) ((> n 1) (* (fa (- n 1) ) n ) ) )
By the other hand, this problem allows to explore the workflow metaphor, keepingus focused on the approach and not on out-of-scope issues.
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Implementing the application using theworkflow metaphor
• We will start by implementing asimple solution using only oneworkflow agent
• Next, we will improve theapplication, enabling theparallel execution ofsub-workflows
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
A workflow with only one actor
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Creating the Project
• (1) Creating a JavaProject
• Adding WADE Nature
• Configuring WADE
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Creating the Project
• Creating a Java Project
• (2) Adding WADENature
• Configuring WADE
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Creating the Project
• Creating a Java Project
• Adding WADE Nature
• (3) Configuring WADE
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
WADE distribution structure
Figure: Source: [Caire, 2008]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Application Structure
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
(4) Defining the Agent
• The Factorial Agent willnot inherit from thejade.core.Agent classdirectly
• We will use theWorkflowEngineAgent a
• All workflow agents areautomatically registeredin the DF
aSee FactorialAgent.java
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
(5) Agent Types
• WADE agentsautomatically registerswith the DF providing adefault description.
• Such descriptioncontains the agent typeas indicated in thecfg/types.xml file whererelevant agent types aredeclared.
Figure: See cfg/types.xml
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
(6) Allowing the Agent to executeWorkflows
DispatchCapabilities ObjectBy embedding a DispatchingCapabilitiesinstance, an agent acquires the ability oflaunching workflows, setting andretrieving, workflow relevant data andlistening to events generated by theexecution of workflows[Telecom Italia, 2011a].
Figure: See FactorialAgent.java
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
(7) Preparing the configuration for thefirst execution
Configuration fileBefore lauching our applicationwe still need to declare whichagents we want to activate in it.This can be done by means ofan "Application ConfigurationFile".
Figure: See cfg/configuration/Factorial.xml
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Running the application for the firsttime
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Basic workflow terminology
• Workflow/Process
• Activity
• Transition
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Basic workflow terminology
• Workflow/Process
• Activity
• Transition
![Page 32: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/32.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Basic workflow terminology
• Workflow/Process
• Activity
• Transition
![Page 33: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/33.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
The WADE meta-model
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
The WADE meta-model
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
The WADE meta-model
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
The WADE meta-model
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
The WADE meta-model
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
The WADE meta-model
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
The WADE meta-model
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
![Page 44: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/44.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
![Page 45: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/45.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
![Page 46: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/46.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
![Page 50: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/50.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
In practice
Figure: Source: [Telecom Italia, 2011b]
![Page 51: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/51.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
(8) Creating a Workflow
• Workflows inWADE are Javaclasses that extendtheWorkflowBehaviourclass
• Indirectly, this classextends our knownJADE Behaviour
• WOLF provides aview to edit aworkflow in abidirectionalfashion.
Figure: See FactorialWorkflow.java
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
(9) (10) Executing Workflows
Figure: See calculate method defined in FactorialAgent.java
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Running the application
![Page 54: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/54.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
WADE Delegation Model
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
WADE Delegation Model
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
WADE Delegation Model
Figure: Source: [Telecom Italia, 2011b]
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
WADE Delegation Model
Figure: Source: [Telecom Italia, 2011b]
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UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
WADE Delegation Model
Figure: Source: [Telecom Italia, 2011b]
![Page 59: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/59.jpg)
UTC
The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
WADE Delegation Model
Figure: Source: [Telecom Italia, 2011b]
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
WADE Delegation Model
Figure: Source: [Telecom Italia, 2011b]
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
A workflow with two actors
Executing sub-workflowsNow, we will change the codeto allow agents delegate theexecution of sub-workflows toother agents
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Application Structure
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Changing Project Settings
• (11) Creating the multiply agent (SeeMultiplyAgent.java)
• Adding multiplier to cfg/types.xml
• Creating the multiplication sub-workflow (SeeMultiplyWorkflow.java)
• Changing the project configuration See cfg/configuration/Factorial.xml)
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Changing Project Settings
• Creating the mutiply agent (See MultiplyAgent.java)
• (12) Adding multiplier to cfg/types.xml
• Creating the multiplication sub-workflow (SeeMultiplyWorkflow.java)
• Changing the project configuration See cfg/configuration/Factorial.xml)
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Changing Project Settings
• Creating the mutiply agent (See MultiplyAgent.java)
• Adding multiplier to cfg/types.xml
• (13) Creating the multiplication sub-workflow (SeeMultiplyWorkflow.java)
• Changing the project configuration See cfg/configuration/Factorial.xml)
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Changing Project Settings
• Creating the mutiply agent (See MultiplyAgent.java)
• Adding multiplier to cfg/types.xml
• Creating the multiplication sub-workflow (SeeMultiplyWorkflow.java)
• (14) Changing the project configuration (Seecfg/configuration/Factorial.xml)
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
(15) Changing the Factorial Agent
Executing sub-workflowsNow, we will change the codeto allow the factorial agentkeep on track of multiplyagents life-cycle a.
aSee subscribe method defined in FactorialAgent.java
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
(16) Changing the Factorial Workflow
Changing the workflowNow, we will change theworkflow in order to executethe multiplication in parallel,joining the results at the endof all operations a.
aSee FactorialWorkflow.java
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Running the application
![Page 70: Agent Workflows with WADE](https://reader034.vdocuments.site/reader034/viewer/2022052310/554eb36bb4c9055f7b8b5307/html5/thumbnails/70.jpg)
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Conclusion
Questions?
• A hands-on example on WADE• Much more examples and resources on
http://jade.tilab.com/wade/• See also the WADE tutorial at
http://jade.tilab.com/wade/doc/tutorial/WADE-Tutorial.pdf
Contact Information
• Marcio Fuckner• [email protected]
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Caire, G. (2008).WADE: an open source platform for workflows and agents.The Seventh International Conference On AutonomousAgents and Multiagent Systems.
Telecom Italia (2011a).WADE Tutorial.Telecom Italia.Available athttp://jade.tilab.com/wade/doc/tutorial/WADE-Tutorial.pdf.
Telecom Italia (2011b).WADE User Guide.Telecom Italia.Available athttp://jade.tilab.com/wade/doc/WADE-User-Guide.pdf.
Workflow Management Coalition (2013).
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The workflowmetaphor
Agent-basedworkflows
WADEOverview
Architecture
The Factorialcase studyGeneral Information
Implementation
Preparing theInfrastructure
Creating the Agent
Creating theWorkflow
WADE DelegationModel
Runningsub-workflows
Workflow Management Coalition Terminology and Glossary.Workflow Management Coalition.Available at http://www.wfmc.org.