BuildOp using "Build" - how does one write a log m

[ArndW]

I've been trying, without success, to write a message (either informational or warning) to the log file of a job calling the buildop. I can't find an example of a c++ call, either.

Has anyone actually written a buildop and done this? Which call did you use? All I can find are deprecated definitions and I can't even get those to work.

[ray.wurlod]

You could always use system() and UVwrite!

(This (writing to log from a Build stage) is not something I've done.)

[Sainath.Srinivasan]

You can use fprintf with stdout or stderr to achieve this.

[ArndW]

Sainath - could you please explain how this will write the equivalent of DSLogInfo() and DSLogWarn()? I did get output using

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std::cout << "this is a message\n";

but haven't found a way to write a warning message to the log

[Sainath.Srinivasan]

ArndW,

Are you saying that the solution works or not ?

You can try

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std::cerr << "this is a warning message\n";

[ray.wurlod]

It won't work, because the log is either a hashed file or a table within XMETA.

[Sainath.Srinivasan]

That will and does work. It is a tried and tested method.

[ray.wurlod]

It's the job log we're talking about here, not a log file. I can't envisage any way that std::cerr could map to a hashed file or to a table in XMETA.

[ArndW]

Actually, it does work, just as using a PRINT in a before-job of a PX or in a job sequence will put the value in the log.

The standard out for informational messages will only issue one log entry per job run, though. I would like my routine to issue one or more distinct warning messages to the log and would need to use something else.

The apt_util\ErrorLog.h header file contains numerous definitions, but they all seem to be deprecated and I haven't been able to get any of the calls to work. This is most likely due to my lack of cpp skills and this is why I'm asking around for a working sample so that I can use that to expand on.

[ArndW]

ArndW,

Are you saying that the solution works or not ?

You can try

Code: Select all

std::cerr << "this is a warning message\n";

Yes, I have the std:cout working, but all of the messages I send there end up in a single log entry and I am looking for a method of writing discrete log entries.