Method and apparatus for assigning policy protocols in a distributed system
First Claim
1. A method for automatic assignment of policy protocols for issuing a remote method call over a distributed system, comprising the computer implemented steps of:
- registering directories of all sets of middleware policies supported in the distributed system;
exporting a service object address to every directory representing a set of middleware policies supported by a service object on instantiation of each service object;
registering the supported policies for each service object instantiated;
on issuance of the remote method call, obtaining addresses for all service objects adapted to execute the remote method call and selecting one of said addresses;
attaching to the remote method call the policy protocols for the directory from which the said one address is selected; and
communicating the remote method call over the distributed system to the service object on a server.
1 Assignment
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Accused Products
Abstract
A framework having a plurality of directories representing different types of middlewares and distributed object systems can be constructed from data provided in a class library. Each directory includes the name and address of all service objects, located across multiple servers in the system, that supports the specific middleware or distributed object policy characteristics for that directory. One service object may be addressed through multiple directories. When a remote method call is issued by a client, a list of service objects capable of executing the call is obtained from the directories and one object selected. The policy characteristics associated with the directory from which the object address is selected, are attached to the call. These characteristics are validated when the addressed server receives the call. In this way, a client program can be written entirely independently of the middleware or peculiarity of implementation of the distributed object service.
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Citations
8 Claims
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1. A method for automatic assignment of policy protocols for issuing a remote method call over a distributed system, comprising the computer implemented steps of:
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registering directories of all sets of middleware policies supported in the distributed system; exporting a service object address to every directory representing a set of middleware policies supported by a service object on instantiation of each service object; registering the supported policies for each service object instantiated; on issuance of the remote method call, obtaining addresses for all service objects adapted to execute the remote method call and selecting one of said addresses; attaching to the remote method call the policy protocols for the directory from which the said one address is selected; and communicating the remote method call over the distributed system to the service object on a server. - View Dependent Claims (2, 3, 4)
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5. A mechanism for automatic assignment of policy protocols for issuing a remote method call over a distributed system, comprising:
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means for registering directories of all sets of middleware policies supported in the distributed system; means for exporting a service object address to every directory representing a set of middleware policies supported by a service object on instantiation of each service object; means for registering the supported policies for each service object instantiated; on issuance of the remote method call, means for obtaining addresses for all service objects adapted to execute the remote method call and selecting one of said addresses; means for attaching to the remote method call the policy protocols for the directory from which the said one address is selected; and means for communicating the remote method call over the distributed system to the service object on a server. - View Dependent Claims (6, 7, 8)
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Specification