1 / 9

CGSI-gSOAP plugin

CGSI-gSOAP plugin. Paolo Tedesco, Akos Frohner JRA1 All Hands Meeting Prague, Nov. 08. The httpg protocol. Grid services use the httpg protocol the ‘g’ stands for GSI (?) httpg = http + GSS The goal is credentials delegation obtained through GSI implementation of GSSAPI.

glynn
Download Presentation

CGSI-gSOAP plugin

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CGSI-gSOAP plugin Paolo Tedesco, Akos Frohner JRA1 All Hands Meeting Prague, Nov. 08

  2. The httpg protocol Grid services use the httpg protocol • the ‘g’ stands for GSI (?) • httpg = http + GSS The goal is credentials delegation • obtained through GSI implementation of GSSAPI CGSI-gSOAP plugin

  3. CGSI-gSOAP plugin Necessary to handle the httpg protocol Replaces the network send and receive functions All packets are sent and received through the GSS API Used by: • DPM • CAStor SRM • FTS • GFAL / lcg_util • Hydra client CGSI-gSOAP plugin

  4. gSOAP 2.7.6b to 2.7.10 Need to change the Makefiles Additional flags required for wsdl2h tool • Include path • -z (“generate pointer based arrays for backward compatibility”) if USE_GSOAP_2_7_10 $(WSDL2H) –z –I$(GSOAP_LOCATION)/include –t typemap.dat ... else $(WSDL2H) –t typemap.dat ... endif Create a new version of the cgsi-gsoap plugin and change all the dependencies ~ 1 month for all the DM components... CGSI-gSOAP plugin

  5. gSOAP 2.7.6b to 2.7.10 (cont.) // 2.7.6b struct soap{ short version; ... } // 2.7.10 struct soap{ short state; short version; ... } • No interoperability among versions • Rebuild everything and make sure that each component uses the same version of gSOAP • New fields (and not at the end) • Changed order of existing fields CGSI-gSOAP plugin

  6. gSOAP 2.7.6b to 2.7.10 (cont.) struct soap{ // new in 2.7.10 #ifdef __cplusplus virtual ~soap(); #endif } • From 2.7.10, no interoperability among c and c++ modules compiled with the same version • ~ 1 week to find out, and then we decided not to upgrade CGSI-gSOAP plugin

  7. gSOAP: conclusions The transition from 2.7.6b to 2.7.10 meant a lot of work • And since we didn’t upgrade, it has just been a waste of time Each upgrade introduces major changes • Even if version numbers don’t change accordingly gSOAP is very unstable with the versions • What if we need to adopt a new version quickly because of a critical bug? CGSI-gSOAP plugin

  8. Is httpg really needed? Why using GSS/httpg instead of SSL/https? • https protocol would allow using standard libraries, also for other languages (e.g. python with ZSI) What are the services that still need httpg? • SRM services because of srmCopy • Can we get rid of srmCopy? Delegation handled in the protocol layer • Other services (FTS, CREAM) handle delegation in the application layer CGSI-gSOAP plugin

  9. Alternatives? Plain SSL • with some small changes, e.g. to handle the signing policy in the root of the certificate chain Probably we still need to maintain an httpg plugin • but at least we would like to avoid gSOAP Axis2c: • possibly more stable • c++ support is not better (possibly even worse) CGSI-gSOAP plugin

More Related