Re: Print log at runtime instead of dumping all at once later.. Net::SSH output buffer

in reply to Print log at runtime instead of dumping all at once later

Ok, i'm not a guru in InterProcessCommunication nor i know what a Jenkins jobs is.. but i have some hint for you:

capture2 is a method provided by Net::SSH. It must have some sort of buffering: 'cause of this is not sufficient to autoflush buffer in your main program, i think yous should try to do in the wrapped, remote program.

capture2 and many other methods are shorcut around open_ex: look carefully at what docs says about this method. Also probably they all rely on dup(2) or pipe(2).

if i understand $stdout, $errput are filehandle: if so you can set autoflush for them (if they are regular IO::Handle). Maybe is worth to read also IPC::Open2 to verify that your open2 can support same features (>&FH).

do not use printf whilst a simple print is sufficient

L*

There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

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Re^2: Print log at runtime instead of dumping all at once later.. Net::SSH output buffer by salva (Canon) on Jul 02, 2015 at 10:32 UTC
if i understand $stdout, $errput are filehandle No, they are the ouput captured coming from the stdout and stderr streams of the remote process.	[reply]
Re^3: Print log at runtime instead of dumping all at once later.. Net::SSH output buffer by Discipulus (Canon) on Jul 02, 2015 at 10:52 UTC
Ah thanks for the clarification salva so they are strings and the method wait the remote command to complete before passing to next instruction? How the `stdout_fh => $fh` option is inteded to be used? is sufficient a `waitpid` call to be sure no more infos will came in the buffer? As you can understand i lack a lot of info about the overall schema, but if you have the patience to write some lines i'll be glad. L* There are no rules, there are no thumbs.. Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.	[reply] [d/l] [select]
Re^4: Print log at runtime instead of dumping all at once later.. Net::SSH output buffer by salva (Canon) on Jul 02, 2015 at 11:04 UTC
If you check the documentation for the `capture2` method, you will see that it doesn't accept a `stdout_fh` argument. `capture2` starts the remote command, and captures any output it sends to stdout and stdin until it exits. Under the hood, it also calls `waitpid`, and the return code from the remote process can be inspected afterwards, just looking at `$?`.	[reply] [d/l] [select]
Re^5: Print log at runtime instead of dumping all at once later.. Net::SSH output buffer by Technext (Acolyte) on Jul 02, 2015 at 17:14 UTC

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