| 摘要 |
An approach for connecting the inputs and the outputs of multiple services in such a way that the entire transaction can be tracked from beginning to end and from service to service is provided. The pipeline architecture of the present invention passes information through a sequence of nodes, each node providing some processing or filtering before passing information to the next node in the pipe. A transaction's token passes down a pipe of services. The pipe can have forks and branches, so a transaction's token is passed from node to node carrying messages from one node to another. The overall transactional information is not lost from service to service; instead it is carried up and down the length of the pipeline. As the transaction's token is passed up and down the pipeline, its history passes with it. The pipe links a chain of nodes connected end-to-end.
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