System Architecture

Scmbug is developed as a client/server solution. As shown in Figure 1, it consists of a set of SCM system hooks that capture standard SCM events, a generic mechanism of handling these events on the machine hosting an SCM repository, a server daemon onto which integration requests corresponding to these events are transported, a generic mechanism of handling these requests, and functionality that can process these requests per bug-tracking system.

When various SCM events occur, such as committing software changes or labeling a repository, they are captured using hooks installed by Scmbug. Before the event's activity is allowed to proceed, various verification checks are performed as described in the Section called Verification Checks in the chapter called Features. These checks are synchronous; when an error is detected, the event's activity is stopped.