METHOD AND SYSTEM FOR LIMITING INSTANCES OF A CLIENT-SERVER PROGRAM WITHIN A RESTRICTED DISTRIBUTED NETWORK

摘要

The present invention provides a computer implemented method, data processing system and computer program product for limiting instances of a client-server program within a plurality of platforms in a restricted distributed network. The data processing system receives an invocation of the client-server program. The data processing system assigns a write file to the client-server program wherein the write file has a write file name and the write file is on a distributed file system accessible to the plurality of platforms. The data processing system determines whether the write file is available. Responsive to a determination that the write file is available, the data processing system opens the write file for writing wherein the write file is associated with the client-server program. The data processing system, responsive to a determination that the write file is available, forms an addressing file having addressing information of a first instance of the client-server program. The data processing system responsive to a determination that the write file is available, reports the addressing file by writing addressing information to the addressing file, wherein the addressing file is established at a predetermined logical location in the distributed file system. The data processing system responsive to the determination that the write file is available, executes at least one instruction of the client-server program.