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GDSF Configuration

GDSF Configuration. EPCC, University of Edinburgh Amy Krause a.krause@epcc.ed.ac.uk International Summer School on Grid Computing - July 2003 Using OGSA-DAI Release 3. Outline. GDSF Configuration Files: Structure Driver Managers Activity Mapping Role Mapping Registration

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GDSF Configuration

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  1. GDSF Configuration EPCC, University of Edinburgh Amy Krause a.krause@epcc.ed.ac.uk International Summer School on Grid Computing - July 2003 Using OGSA-DAI Release 3

  2. Outline • GDSF Configuration Files: • Structure • Driver Managers • Activity Mapping • Role Mapping • Registration • What do I have to change? OGSA-DAI Training Workshop, Release 3

  3. OGSA-DAI Container DAISGR GDSF GDSF DAISGR Regist. list DR DR WSDD Container Configuration • Creates persistent factory • Defines configuration files to read in GDSF Config file OGSA-DAI Training Workshop, Release 3

  4. OGSA-DAI Container DAISGR GDSF GDSF DAISGR Regist. list DR DR Data Resource Configuration File • Configures DriverManager, RoleMaps, ActivityMaps and MetaData GDSF Config file OGSA-DAI Training Workshop, Release 3

  5. Configuration Document • driverManager element • roleMap elements • activityMap elements • dataResourceMetadata element • May contain documentation OGSA-DAI Training Workshop, Release 3

  6. dataResourceConfig <dataResourceConfig xmlns="http://ogsadai.org.uk/namespaces/2003/07/gdsf/config"> </dataResourceConfig> <documentation> A sample config file. </documentation> <activityMap name="sqlQueryStatement> . . . </activityMap> <dataResourceMetadata> . . . </dataResourceMetadata> <roleMap name="Name" . . . /> <driverManager . . .> <driver> . . . </driver> </driverManager> <driver> . . . </driver> OGSA-DAI Training Workshop, Release 3

  7. DriverManager Element • driverManagerImplementation attribute: implementation of the driver manager • driver element: driver specifics • driverImplementation: driver used to connect to the data resource • driverURI: connection/collection URI <driverManager driverManagerImplementation=“driver.manager.class"> <driver> <driverImplementation>driver.class</driverImplementation> <driverURI> connectionURI </driverURI> </driver> </driverManager> OGSA-DAI Training Workshop, Release 3

  8. Example: XMLDB DriverManager <driverManager driverManagerImplementation= "uk.org.ogsadai.….XMLDBDataResourceImplementation"> <driver> <driverImplementation> org.apache.xindice.client.xmldb.DatabaseImpl </driverImplementation> <driverURI> xmldb:xindice://localhost:4080/db/ogsadai </driverURI> </driver> </driverManager> OGSA-DAI Training Workshop, Release 3

  9. Example: JDBC DriverManager <driverManager driverManagerImplementation= "uk.org.….SimpleJDBCDataResourceImplementation"> <driver> <driverImplementation> org.gjt.mm.mysql.Driver </driverImplementation> <driverURI> jdbc:mysql://localhost:3306/ogsadai </driverURI> </driver> </driverManager> OGSA-DAI Training Workshop, Release 3

  10. DataResourceMetadata element • dataResourceMetadata contains • productInfo (optional): • productName • productVersion • vendorName • relationalMetaData • databaseSchema: configures the callback class • XMLDBMetaData • collectionSchema: callback class • collectionStructure: callback class OGSA-DAI Training Workshop, Release 3

  11. dataResourceMetadataRelational DB Example <dataResourceMetadata> <productInfo> <productName>MySQL</productName> <productVersion>4</productVersion> <vendorName>MySQL AB</vendorName> </productInfo> <relationalMetadata> <databaseSchema callback="uk.org.….SimpleJDBCMetaDataExtractor"/> </relationalMetadata> </dataResourceMetadata> OGSA-DAI Training Workshop, Release 3

  12. dataResourceMetadataXMLDB Example <dataResourceMetadata> <productInfo> <productName>Xindice</productName> <productVersion>1.0</productVersion> <vendorName>Apache</vendorName> </productInfo> <xmlMetadata> <collectionSchema callback="uk.org.….SimpleXMLDBMetaDataExtractor"/> </xmlMetadata> </dataResourceMetadata> OGSA-DAI Training Workshop, Release 3

  13. RoleMap • Indicates what role mappers are used for mapping Grid to database credentials • Value of configuration attribute depends on the role mapper implementation • For SimpleFileRoleMapper, a rolemap file must be present and referenced in the configuration attribute <roleMap name=”myRoleMap” implementation=”uk.org.….SimpleFileRoleMapper” configuration=”/examples/rolemaps.xml”/> OGSA-DAI Training Workshop, Release 3

  14. Activity Map File • The Activity Map relates each named activity to • a Java implementation class • XML Schema that corresponds to activity • Unless you are writing your own activity you should not need to modify these mappings! OGSA-DAI Training Workshop, Release 3

  15. Activity Maps • name (optional): the name of the activity element • implementation: the implementing Java class for this activity • schemaFileName: the location of the schema this activity must conform to <activityMap name="sqlUpdateStatement“ implementation="uk.….SQLUpdateStatementActivity“ schemaFileName="http://localhost:8080/schema/ ogsadai/xsd/activities/sql_update_statement.xsd"/> OGSA-DAI Training Workshop, Release 3

  16. OGSA-DAI Container DAISGR GDSF GDSF DR DR DAISGR Registration GDSF Config file DAISGR Regist. list OGSA-DAI Training Workshop, Release 3

  17. gdsfRegistrationList • Allows GDSF to register aspects of its configuration with a GDSR • Contains zero or more gdsfRegistration elements • gdsfRegistration specifies the GSH of a GDSR to register with OGSA-DAI Training Workshop, Release 3

  18. gdsfRegistrationList <gdsf:gdsfRegistrationList xmlns="http://ogsadai.org.uk/P2R2/schemas/gdsf“> <gdsf:gdsfRegistration name="defaultRegistration“ gsh="http://localhost:8080/ogsa/services/ ogsadai/GridDataServiceRegistry"/> </gdsf:gdsfRegistrationList> OGSA-DAI Training Workshop, Release 3

  19. RoleMap Files • Map Grid credentials to database authorisation • Need to set up a RoleMap file when using the SimpleFileRoleMapper class for role mapping • A RoleMap file contains a Database element for each data resource the service can connect to • The Database attribute name references a driverURI element name in a driver element of the configuration • Each Database entry contains zero or more User elements, mapping a Globus certificate distinguished name dn to a database user and password OGSA-DAI Training Workshop, Release 3

  20. Setting up a RoleMap file <DatabaseRoles> <Database name=“xmldb:xindice:// localhost:8080/db/littleblackbook"> <User dn="No Certificate Provided“ userid="" password="" /> </Database> <Database name=“jdbc:mysql:// localhost:3306/ogsadai"> <User dn="No Certificate Provided“ userid="ogsadai" password="secret" /> </Database> </DatabaseRoles> OGSA-DAI Training Workshop, Release 3

  21. Tips It doesn’t work! What’s wrong? • Check the driver URI (within driverManager/driver): • Does it specify the correct prefix, location, port, database name? <driverURI>jdbc:mysql://localhost:3306/ogsadai</driverURI> • Check the role mapping: • Does the configuration attribute point to the correct RoleMap file? <roleMap name=”myRoleMap” implementation=”SimpleFileRoleMapper” configuration=”/examples/rolemaps.xml”/> • Check the role mapping file: • Does it reference the data name above? • Does it provide the correct user names and passwords? OGSA-DAI Training Workshop, Release 3

  22. Practicals • Installation of OGSA-DAI R3 preview release • Configuration of two different databases: • Xindice • MySQL • Running a simple example http://192.167.1.106:8080/workshop OGSA-DAI Training Workshop, Release 3

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