EAI and Xtext DSLs. Dietmar Stoll (itemis), André Lehner (Zürcher Kantonalbank) XtextCon Kiel, May 20, 2015

Transcription

1 EAI and Xtext DSLs Dietmar Stoll (itemis), André Lehner (Zürcher Kantonalbank) XtextCon Kiel, May 20, 2015

2 Agenda integration at Zürcher Kantonalbank (ZKB) EAI before EAI reloaded with domain specific languages The languages Model-driven migration of mainframe code New languages Lessons learned

3 EAI before direct business logic tech logic, ad-hoc tech logic, standardized 182 interface, ad-hoc interface, stand. with hub 42 METRO with hub BRE 45 3

4 EAI now business logic standardized tech logic standardized interface standardization formally defined interfaces 4 defined roles: provider/consumer, responsibilities decoupling business/tech logic generation with MDSD few building blocks, but many combinations

5 Architecture Key: User applications User applications EAI App generated Business logic Connector 3 Connector Business logic Central Services Connector Business logic Runtime EAImgmt EAIregistry EAItouch EAIrepo *.dsl Generator DSLedit EAIplatform Runtime Core DSL 3rdPartyLibs 5

6 DSLs and Registry SST DSL interface IPartner { message process(header : EaidsExtractHeaderAdb ) message process(partner : Partner ) SRV DSL SRV DSL consumer PartnerFile { target-platform: JAVA { contract-root-package : connector-root-package: P T data S S T T P S R V EAIrepo provider PartnerFile { implements: IPartner transport: FILE { } protocol: CSV { delimiter: ";" ffm-mappings: AdbMapping target-platform: JAVA { EAImgmt REG DSL REG DSL 6 for PD register PartnerFileConn { instance: DEFAULT { config: FILE { file: SLZ.W00.WXXO01.W01MMK0T.DO01" } } } for PD register SwisscomConn { instance: DEFAULT { config: FILE { file: SLZ.W00.WXXO01.W01MMK } } }

7 Mapping typedef StageHeaderDatetime { length:26 enquote: NEVER pattern: "yyyy-mm-dd-hh.mm.ss.fff mapping AdbMapping { // general mappings for all types typedef default BooleanType { length: 1 enquote: ALWAYS pattern: "0,1" } typedef default IntegerType { alignment: RIGHT fill-char: "0" enquote: ALWAYS } typedef default StringType { enquote: ALWAYS } typedef default DateType { length: 8 enquote: ALWAYS pattern: "yyyymmdd«} typedef default DatetimeType { length:14 enquote: ALWAYS pattern: "yyyymmddhhmmss«} // (no) specific record mappings struct Partner: Partner {} struct EaidsExtractHeader : EaidsExtractHeaderMapping {} struct EaidsExtractTrailer : EaidsExtractTrailerMapping {} struct KdSearch1: KdSearch1 {} struct KdSearch2: KdSearch2 {} //... } 7

8 Connector Combinations S S T S R V EAIrepo P T data T P Function Client Server Platform Java.NET/C# Python PL/1 Transport File HTTP Socket Messaging Web Service Format Binary Csv Fixed Length JSON PXF BRE XML XML WSA AMI 8

9 Development Process Service Definition Service Implementation DSLedit Eclipse Analyst workarea *.sstdsl *.srvdsl pom.xml specific workarea connector.jar Core Eclipse ARM Developer Presentation Storage Continuous Integration EAIrepo Web EAIrepo svn *.sstdsl *.srvdsl build, release connector.jar *.dsl EAIplatform svn ressource *.java Generator Others pom.xml *.cs *.xtend Core CI-Support 9

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11 Migration ADB to EAI Service ADB / Mainframe DB2-base System System System Liefersystem Liefersystem source Files Load process (Staging) ODS (Operational Store) History Extract process Files System System System Empfängersystem Empfängersystem Target 85 connected applications 23 data source 39 both data source and target 36 target interfaces 600 source system target system jobs 11

12 Model Driven Migration ADB Metamodel EAI Metamodel ADB Model transform EAI Model (*.dsl, ) parse generate ADB Sources EAI Sources 12

13 Lessons learned Good Obstacles Short development cycle (code generation) Quality Central repository important source of information and documentation Separation of DSLs went good Custom solution: High flexibility Modeling Guidelines Mastery, Knowhow Transfer (MDSD) High initial investment (DSLedit) «Competition» WSDL/XML Custom solution: Maintenance/Extension No magic - serious engineering 13

14 itemis Schweiz GmbH Technopark Aargau Dorfstr Windisch +41 (0)