Data Manipulation with Globus Toolkit Ivan Ivanovski TU München,

2 The Project Tasks Introduce to Globus Toolkit 4 Write GT4 Web Service GridFTP OGSA-DAI Work with the existing CSCW Framework

3 Globus Toolkit – Introduction Open-source-software developed by Globus Alliance Includes – security, information infrastructure, resource, data management, communication, fault detection, portability.

4 Who uses Globus software CERN – European Data Grid GriPhyN Network for Earthquake Engineering & Simulation European System Grid

5 Globus Toolkit 4 – used components JAVA WS CORE GridFTP OGSA-DAI

6 Working with the Web Services Standardized way of integrating web-based applications – XML, SOAP, WSDL and UDDI standards – over an internet backbone. Independent (operating system / language) 5 steps of creating Web Services

7 5 Steps of Creating GT4 Web Service Step 1 – Defining Service Interface Step 2 – Implementing the Java Service Step 3 – Configuring Deployment Step 4 – Creating a GAR file Step 5 – Deployment

8 OGSA-DAI = Open Grid Software Architecture – Data Access and Integration Querying, Updating, Transforming, Delivering Data to Databases from a web service Grid Environment

9 Deploying OGSA-DAI WSRF Data Services and Data Service Resources First the OGSA-DAI data service needs to be deployed with the following command: $ ant deployDataServiceGT4 -Ddai.service.path=service_path The next step is to deploy the data service resource. The command needs to be run from $OGSADAI_HOME and is as follows: $ ant deployResourceGT4 - Ddai.service.resource.file=mydata.service.resource.properties Then the file mydata.service.resource.properties needs to be created and edited The final step is to add the data service resource to the data service: $ ant addResourceGT4 -Ddai.service.path=path_to_service -Ddai.resource.id=dai_resource_id In case undeployment is needed, the following command shall be executed: $ ant removeResourceGT4 -Ddai.service.path=path_to_service -Ddai.resource.id=dai_resurce_id

10 GridFTP GSI security on control and data channels Multiple data channels for parallel transfers Partial file transfers Third-party (direct server-to-server) transfers Authenticated data channels Reusable data channels Command pipelining

11 Problem with GridFTP Hard to find java examples Authorization Problem Authentication Problem Security Mechanisms Installation Problem

12 CSCW Framework Files of interest: – framework/server/filter/import_filter_sat.cc – framework/server/vef/geom_model.cc New files added: – GridService.java – client.cpp

13 The Work on the Framework geom_model.cc import_filter_sat.cc client.cpp socket communication Server.java GridService.java MySql OGSA-DAI

14 Time Performances – Client

15 Time Performances – Server

16 To sum up… Web Service successfully deployed OGSA-DAI Service successfully deployed – Data queries successfully executed to a database Data transfer from within the code File transfer from within the code, with a system call to globus-url-copy command The framework successfully connected with the java server that executes queries sent from this framework

17 Questions & Answers