Canister loading of event definitions
Each Discover Canister queries its Search Server for the event definitions. Search Server retrieves them through the Data Service from the database.
The Canister compares the checksum of the event definitions with
the checksum of its last load. If a difference is detected, the event
definitions changed. The old definitions are saved to a .bak
file,
and the new event definitions overwrite the old file.
The Canister then compiles the event definition XML for use. If the event definitions fail to compile, a validation error is generated and the previous set of validated event definitions is used. See Compile failure errors.
Upon successful compile, all Canister processes are signaled to reload the event definitions.
- See Event loading errors.