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The Integration of the XML-based Monitoring System SPECTO

The monitoring system SPECTOgif [10] facilitates the management of log information in distributed systems. A log information is captured as an event which is encoded as an XML application [3]. SPECTO provides two kinds of servers for online and offline monitoring. Whereas online monitoring is characterized by pushing log information to the user permanently, offline monitoring is more like a request/response communication process where log information is requested by the user. Each SPECTO server is embedded into RESPONDEO such that clients send their request messages to the application server which in turn dispatches each message to the specified application object. Each SPECTO application object is responsible for managing either a single XML-based log file or a directory of such files. For online monitoring of system components, another middleware component, called MITTO, is introduced in SPECTO, which provides a scalable infrastructure for asynchronously pushing log information to the user. However, in what follows, we focus on how the offline monitoring server of SPECTO is integrated into RESPONDEO.

  figure175
Figure 5: Scheme of the SPECTO application objects




next up previous
Next: 4.2.1 Initialization of SPECTO's Up: 4 Examples Previous: 4.1.3 Handling of PAOs

Ralf-Dieter Schimkat
Thu Dec 9 14:08:00 GMT+1 1999