Component blpapi_logging

Provide a C call to register a call back for logging. More...

Namespaces
namespace	BloombergLP
namespace	BloombergLP::blpapi

Classes
struct	Logging

Detailed Description

Provide a C call to register a call back for logging.

Purpose:

Provide a C call to register a call back for logging

Description:

This component provides a C function that is used to register a callback for logging

Usage:

To use the call back a function needs to be created with the same definition of blpapi_Logging_Func_t. The callback will be called for all the log messages that have severity greater than or equal to the specified thresholdSeverity. A callback can be registered multiple number of times but only the last registered callback will be used. Registering with a NULL callback will de-register the callback.

extern "C" {
void myLoggerCallback(blpapi_UInt64_t    threadId,
                      int                severity,
                      blpapi_Datetime_t  timestamp,
                      const char        *category,
                      const char        *message)
{
    if (severity == blpapi_Logging_SEVERITY_FATAL) {
        // Do some logic for abort here
    }
    std::cout << severity << "-->" << message << std::endl;
}

This callback needs to be registered with the library as

int main()  {
    // ....
    blpapi_Logging_registerCallback(myLoggerCallback,
                                    blpapi_Logging_SEVERITY_TRACE);
    // ....
}