[
Date Prev][
Date Next][
Thread Prev][
Thread Next][
Date Index][
Thread Index]
[
List Home]
|
RE: [dsdp-tcf-dev] how to add custom errors in TCF agent?
|
Hi Ed,
errors API might be a bit confusing because it is designed to
support POSIX style of error reporting using errno variable.
To create an error report you do something like
this:
int no = 0;
ErrorReport * err = create_error_report();
... set report
fields...
no =
set_error_report_errno(err);
release_error_report(err);
Now "no" contains an error code that points to error report
you have created. You can use the code as a value for errno variable.
Note that such error codes are assigned dynamically and are recycled later,
but the code remains valid at least until current dispatch cycle
ends.
To send the report over JSON:
write_errno(out, no);
Regards,
Eugene.
Hi,
In the reference TCF agent code, I'm having trouble figuring
out how to add a custom error reply, which isn't errno or a system error,
without hand-coding a lot of json calls.
I.e. I'd like for a service to reply to a command with an
error that has all the standard fields (timestamp, error code, format, provider,
etc) but with a custom message.
It looks like errors.c potentially supports a range of custom
error messages and some way to add content to it with ErrorReport/ErrorMessage
structs. But I wonder if I'm fooling myself, because ERR_MESSAGE_MIN/MAX
and SRC_SYSTEM/GAI/MESSAGE/REPORT enums are only available inside errors.c, not
in the header.
If I use "create_error_report()", which seems to be the
API for this, how do I write the error object over json? I.e. how can I
combine what get_error_report() does with this?
-- Ed
