Policy trading

Author

Hanssen, Oyvind ; Eliassen, Frank

Author_Institution

Fac. of Eng., Agder Univ. Coll., Grimstad, Norway

fYear

2000

fDate

2000

Firstpage

219

Lastpage

227

Abstract

We investigate policy trading to address the problem of how extensible and configurable middleware could adapt to different non-functional requirements and different properties of environments. Policies denote potential contracts between the system and the user, i.e. if requirements for the environment is met, the policies guarantee that certain QoS will be provided. Trading involves matching user requirements plus environmental properties with policies. We define policy trading and illustrate its principles and use. Trading is based on profile expressions which are references to statically defined profile graphs. Such expressions can be combined through simple adding (sum) or adding expressions which refers to different locations (sidesums). We develop a set of rules to allow for testing of compatibility relationships between profile expressions

Keywords

client-server systems; distributed object management; quality of service; QoS; compatibility relationships; configurable middleware; distributed objects; nonfunctional requirements; policy trading; profile expressions; profile graphs; quality of service;

fLanguage

English

Publisher

ieee

Conference_Titel

Distributed Objects and Applications, 2000. Proceedings. DOA '00. International Symposium on

Conference_Location

Antwerp

Print_ISBN

0-7695-0819-7

Type

conf

DOI

10.1109/DOA.2000.874193

Filename

874193