The internal architecture of the Java plugin components, developed for the TIVA, EVITA, CATS, UCAV-2010 and similar projects

Bachmann, Arne

Kunde, Markus

Litz, Markus

Institute of Transport Research:Publications

Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Tool Integration and Data Formats for Distributed Airplane PredesignArne Bachmann, Markus Kunde, Markus LitzSimulation and Software TechnologyGerman Aerospace Center (DLR)ModelCenter European Users WorkshopInstitute of Aerodynamics, BraunschweigOctober 16th, 2008 2Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 GoalUnder development at DLR in the following aeronautics projects:TIVA I/II Technology integration for the virtual aircraftUCAV 2010 Unmanned combat air vehicleEVITA Evaluation of innovative turbine enginesCATS Climate-compatible air transport system… and more to come!A DLR-wide system to enable the multi-disciplinary design andanalysis of airplane configurations in the predesign phase. i  t  t  l  t  lti i i li  i  l i  f i l  fi ti  i  t  i  .3Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Common Parametric Aircraft Configuration Standard:General Structure of the CPACS Datasetconfigurationheaderengineswingsglobalfuselagesmissionsairfoilslibrarypathairfoilfileairfoilfile4Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Interface Libraries to the CPACSTIXI - Library for XML I/OUses libxml2 of the Gnome project Simple access to XML through XPath expressionsFunctions for reading and writing ofStrings, Matrixes, Numbers & 3D-PointsTIGL - Reading and processing the geometry information stored in the central datasetFor fuselages and wings; engines plannedUses OpenCASCADE's geometry libraryConstruction of the 3D geometryCreation of surfaces from cross sectionsUsed e.g. for calculation of surface points in absolute Cartesian coordinateslibxml2TIXI Open CASCADETIGLApplication5Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 TIGLViewer – Visualization Tool for TIGL6Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Integration into ModelCenter (Overview)All components realized as component plugins using JavaTMClient side:CPACSSource.java offers different prepared aircraft configurationsCPACSDestination.java writes out final optimized configuration  or logs intermediate resultsCPACSInstantiator.java is the central user GUI for inserting wrapped server-side toolsOffers limited palette of servers, tools and versionsCentrally managed in a FTP/WebDAV-hosted fileServer side:ToolWrapper.java wraps any executable toolConversion of tool-specific input/output dataManages additional output files7Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 ModelCenter integration8Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Plugin-RelationshipModelCenterproject workspaceInstantiator9Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Plugin-RelationshipModelCenterproject workspaceInstantiatorTool ATool BAnalysis Server<ToolWrapper.class><ToolWrapper.class>Central Configuration Servertools.xmlFTP10Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Plugin-RelationshipModelCenterproject workspaceInstantiatorCPACSSourceCPACSDestinationTool ATool BAnalysis Server<ToolWrapper.class><ToolWrapper.class>Central Configuration Servertools.xml cpacs.xmlFTP WebDAVwriteread11Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Client PluginsAll components provide user-friendly GUIs (Swing), e. g. forSelecting CPACS configurations (from local HD or WebDAV)Selecting a ToolWrapper configuration (Server / Tool / Version)Choosing a plugin's mode of operationAll exceptions are reported in log files, present errors and stack traces to the user, a graphical logger can be enabled (uses apache log4j / LogFactor 5)Still work to be done to get more user-friendlynessE. g. check availability of a server before telling ModelCenter to instantiate a component12Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Client Plugins: LogFactor 513Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Connecting ComponentsEach component may has either or both ofInput variables (ToolWrappers and CPACSDestination)Output variables (ToolWrappers and CPACSSource)The CPACS XML dataset can be viewed and connected on 3 levelsAs a whole – one string containing all XMLAs subtrees – direct children of complete XML as stringsAs single variables – native ModelCenter variablesTags in the XML can be markedRaw: Further nestedness won't be resolved, just one XML stringInvisible: Not shown in single variable tree, but inside XML strings14Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Client- Server ArchitectureModel-CenterUser desktop 1Model-CenterUser desktop 2Model-CenterServer 1Model-CenterServer 215Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 ToolWrapper PluginUses PHXRunShareContext to enable save multi-user executionEach tool is copied to a temporary directory and executed thereInput data coming from other components isSynchronized between the three input levels / data viewsMapped by XSLT to meet a tool-specific XML input formatOutput data from the tool is thenMapped and merged to the original input datasetProvided for the tool's successors on all 3 levels16Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Data RoundtripClient (MC)Tool PredecessorServer (AS)ToolWrapperVariablesSubsAllTool SuccessorVariablesSubsAllmapCPACS mapPre - Command - PostNative wrapperData flow17Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 Example of a Mapping File<?xml version="1.0" encoding="UTF-8"?><map:mappings xmlns:map="http://www.dlr.de/sistec/tool/mapping"><map:mapping><map:source>/result</map:source><map:target>/configuration/application[@name="IBUCK"]/result</map:target></map:mapping><map:mapping><map:source>/result/values</map:source><map:target>/configuration/common/values</map:target></map:mapping><map:mapping><map:source>/result/old_name</map:source><map:target>/configuration/common/new_name</map:target></map:mapping>...</map:mappings>18Tool Integration and data formats for distributed airplane predesign > Bachmann, Kunde, Litz > MCEUC 2008 > October 16th, 2008 OutlookModelCenter PluginsIntegrating WebDAV support for all kinds of configurationAdd a versatile aggregator component to merge interim resultsAutomatic XML validation via XSD, more usability and usage safetyProvide linked satellite data in ModelCenter, if required by userTIXI + TIGL + TUHL? – Provide a new numerical scientific libraryIntegration of our plugins into other frameworksWe're looking forward for the coming features in ModelCenter 8, 9, 10 !Questions?http://www.walle-derfilm.de/

Tool Integration and Data Formats for Distributed Airplane Predesign

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