Service Logging Considerations
A service that uses a custom logger has several ways of configuring it:
as a process-wide logger,
in the
InitializationDataargument that is passed tomain,by overriding the
initializeCommunicatormember function.
On Windows, Ice::Service installs its own logger that uses the Windows Application event log if no custom logger is defined. The source name for the event log is the service's name unless a different value is specified using the property Ice.EventLog.Source.
On Unix, the default Ice logger (which logs to the standard error output) is used when no other logger is configured. For daemons, this is not appropriate because the output will be lost. To change this, you can either implement a custom logger or set the Ice.UseSyslog property, which selects a logger implementation that logs to the syslog facility. Alternatively, you can set the Ice.LogFile property to write log messages to a file.
Note that Ice::Service may encounter errors before the communicator is initialized. In this situation, Ice::Service uses its default logger unless a process-wide logger is configured. Therefore, even if a failing service is configured to use a different logger implementation, you may find useful diagnostic information in the Application event log (on Windows) or sent to standard error (on Linux and macOS).