JDS Australia

lr_set_debug_message(LR_MSG_CLASS_JIT_LOG_ON_ERROR | LR_MSG_CLASS_EXTENDED_LOG | LR_MSG_CLASS_PARAMETERS | LR_MSG_CLASS_RESULT_DATA | LR_MSG_CLASS_FULL_TRACE, LR_SWITCH_ON);

// Turn off all logging options (this is the same as having logging disabled).
void jds_clear_log_options(void) {
	unsigned int log_options = lr_get_debug_message();
	lr_set_debug_message(log_options, LR_SWITCH_OFF); 
	return;
}

// This function allows you to set log options using the same C constants as lr_set_debug_message (LR_MSG_CLASS_EXTENDED_LOG etc).
// Note tht you should call jds_clear_log_options first, or you new log options will be added to any existing log options.
void jds_set_log_options(unsigned int new_log_options) {
	unsigned int original_log_options = lr_get_debug_message();
 
	lr_set_debug_message(new_log_options, LR_SWITCH_ON);	
 
	// The lr_set_debug_message() function has a non-intuitive (i.e. stupid) behaviour, where
	// it will automatically set LR_MSG_CLASS_JIT_LOG_ON_ERROR if your runtime settings have 
	// this option enabled.
	// This means that it is necessary to un-set this option (LR_SWITCH_OFF) if it was not already 
	// enabled, and it was not requested to be enabled.
	if (lr_get_debug_message() & LR_MSG_CLASS_JIT_LOG_ON_ERROR) {
		if ( !( (original_log_options & LR_MSG_CLASS_JIT_LOG_ON_ERROR) || (new_log_options & LR_MSG_CLASS_JIT_LOG_ON_ERROR) ) ) {
			lr_set_debug_message(LR_MSG_CLASS_JIT_LOG_ON_ERROR, LR_SWITCH_OFF);
		}
	}
 
	return;
}

// Prints the current log options to the output log (even if logging is disabled)
// Example: jds_print_log_options(lr_get_debug_message());
void jds_print_log_options(unsigned int log_options_to_print) {
	char buf[(4 * 8) + 1]; // sizeof(unsigned int) is always 4 bytes in LoadRunner.
	unsigned int original_log_options = lr_get_debug_message();
 
	jds_clear_log_options();
	jds_set_log_options(LR_MSG_CLASS_BRIEF_LOG);
 
	// Print the bit pattern for the current log options.
	itoa(log_options_to_print, buf, 2);
	lr_output_message("Log options bit pattern: %032.32s", buf);
 
	lr_output_message("Log options selected:");
 
	if (log_options_to_print == 0) {
		lr_output_message("* Disabled (LR_MSG_CLASS_DISABLE_LOG)");
	} else {
 
		if (log_options_to_print & LR_MSG_CLASS_JIT_LOG_ON_ERROR) {
			lr_output_message("* Send messages only when an error occurs (LR_MSG_CLASS_JIT_LOG_ON_ERROR)");
		} else {
			lr_output_message("* Always send messages");
		}
 
		if (log_options_to_print & LR_MSG_CLASS_BRIEF_LOG) {
			lr_output_message("* Log messages at the detail level of \"Standard log\" (LR_MSG_CLASS_BRIEF_LOG)");
		}
 
		if (log_options_to_print & LR_MSG_CLASS_EXTENDED_LOG) {
			lr_output_message("* Log messages at the detail level of \"Extended log\" (LR_MSG_CLASS_EXTENDED_LOG)");
		}
 
		if (log_options_to_print & LR_MSG_CLASS_PARAMETERS) {
			lr_output_message("* Parameter substitution (LR_MSG_CLASS_PARAMETERS)");
		}
 
		if (log_options_to_print & LR_MSG_CLASS_RESULT_DATA) {
			lr_output_message("* Data returned by server (LR_MSG_CLASS_RESULT_DATA)");
		}
 
		if (log_options_to_print & LR_MSG_CLASS_FULL_TRACE) {
			lr_output_message("* Advanced trace (LR_MSG_CLASS_FULL_TRACE)");
		}
	}
 
	jds_clear_log_options();
	jds_set_log_options(original_log_options);
 
	return;
}
/*
Output looks like this:
globals.h(26): Log options bit pattern: 00000000000000000000001000011110
globals.h(28): Log options selected:
globals.h(35): * Send messages only when an error occurs (LR_MSG_CLASS_JIT_LOG_ON_ERROR)
globals.h(45): * Log messages at the detail level of "Extended log" (LR_MSG_CLASS_EXTENDED_LOG)
globals.h(49): * Parameter substitution (LR_MSG_CLASS_PARAMETERS)
globals.h(53): * Data returned by server (LR_MSG_CLASS_RESULT_DATA)
globals.h(57): * Advanced trace (LR_MSG_CLASS_FULL_TRACE)
*/

Action()
{
	// Save current options.
	unsigned int original_log_options = lr_get_debug_message();
 
	// Set new (minimal) log options
	jds_clear_log_options();
	jds_set_log_options(LR_MSG_CLASS_BRIEF_LOG);
 
	// Do whatever you want to do with the new log options.
	// In this case, I am just writing a simple message to the log.
	lr_output_message("Username: %s, IP address: %s", lr_eval_string("{UserName}"), lr_get_vuser_ip());
 
	// Restore the log options to their original values.
	jds_clear_log_options();
	jds_set_log_options(original_log_options);
 
	return 0;
}