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Presentation given on 24.2.2012 at the SCUBE Industry Exchange workshop at Thales, Paris
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Jopera Eclipse-based Visual Composition
Environment featuring a General Language for Heterogeneous Service Composition
Cesare Pautasso Faculty of Informatics, USI Lugano, Switzerland [email protected] http://www.jopera.org http://twitter.com/pautasso 24.2.2012 Associate Member
About Cesare Pautasso • Assistant Professor at the Faculty of Informatics,
University of Lugano, Switzerland (since Sept 2007) • Research Projects:
• SOSOA – Self-Organizing Service Oriented Architectures • CLAVOS – Continuous Lifelong Analysis and Verification
of Open Services LiSA – Liquid Software Architecture
• BPEL/BPMN for REST • Researcher at IBM Zurich Research Lab (2007) • Post-Doc at ETH Zürich
• Software: JOpera: Process Support for more than Web services http://www.jopera.org/
• Ph.D. at ETH Zürich, Switzerland (2004) • Laurea Politecnico di Milano (2000) • More information:
http://www.pautasso.info/ http://twitter.com/pautasso/
©2010 Cesare Pautasso - 21.5.2010 2
Faculty of Informatics (Opened 2004) 17 Professors 75 PhDs + Post-docs
Excellence in Research Innovative Teaching
University of Lugano (USI)
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(Java-based) Open Process Engine for
Reliable Activities
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Many kinds of Services
Service
Synchronous (RPC) Services
Service Asynchronous Services
Service
Streaming Services
Service
Human Services
RESTful Services R
Service
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Heterogeneous Composition
Service
Service
Service
Service
R
Service R Service Com
position
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Service Interface
Data Flow (input/output parameters)
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Composition Language
Control Flow dependencies (finished, failed, aborted, etc) cycles allowed, implied by data flow arbitrary synchronization rules possible
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Recursion
Processes compose tasks (which may themselves invoke or spawn sub-processes)
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Extensibility
Mapping to service invocation mechanisms and protocols
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Modeling Viewpoints
Data Flow
Control Flow
Adapter Bindings
HTTP XPATH XSLT JAVA HTML …
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Control Flow
Control Flow Dependency
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Service Bindings
HTTP
XSLT
HTML
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Data Flow
Data Flow (Copy)
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Demo
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Doodle Map Example
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Doodle Map Architecture
Web Browser Workflow Engine
RESTful Web Services
APIs GET
POST GET
REST
ful A
PI
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Control Flow
Control Flow Dependency
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Service Bindings
HTTP
XPATH
XSLT
JAVA
HTML
…
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Data Flow
Data Flow (Copy)
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Why Users Like JOpera High Level Workflow Language
Data and Control Aspects (Visual Representation) Recursion, Iteration, Parallelism and Pipelining
Open and Extensible Service Model Efficient invocation of local code snippets (Java, Javascript) Synchronous, Asynchronous, and Streaming interaction Web services support (REST, WS-*) Secure access to remote file systems and hosts (SSH) Basic human task worklist handler
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Why Users Like JOpera High Level Workflow Language
Data and Control Aspects (Visual Representation) Recursion, Iteration, Parallelism and Pipelining
Open and Extensible Component Model Efficient invocation of local code snippets (Java, Javascript) Synchronous, Asynchronous, and Streaming interaction Web services support (Axis, WSIF) Secure access to remote file systems and hosts (SSH) Basic human task worklist handler
Strong Eclipse Foundation Platform Independent (Eclipse/Java) Flexible, Extensible, Modular and Embeddable
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A Growing User Community
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Swiss Institute of Bioinformatics, Swiss National Supercomputing Center, Purdue University, National Center for Supercomputing Applications (NCSA), Singapore Management University, McGill University, University of Kent , SINTEF (Norway), IWU Fraunhofer (Germany) …
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Conclusion Modeling service composition behavior
Flow-based composition language (Visual & XML) Development and Debugging tools for Eclipse Composition not limited to Web services
Execution of the composition models Efficiency (compiled to Java bytecode) Distributed engine (multicore, cluster, cloud) Autonomic platform (self-healing, self-tuning) Extensibility (Eclipse plug-ins to provide custom service
publishing and invocation adapters)
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Download http://www.jopera.org/latest
More Information http://www.jopera.org/docs/publications
Cesare Pautasso, [email protected], @pautasso
PhD Positions Available
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Cesare Pautasso http://www.pautasso.info/ @pautasso
