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digitalmars.D.learn - std.experimental.logger

reply sanjayss <dummy dummy.dummy> writes:
I'm doing the following:

import std.experimental.logger;

int
main(string[] args)
{
sharedLog = new FileLogger("logfile.log");

log("Test log 1");
log("Test log 2");
log("Test log 3");
}


and I expected the logs to be seen in the logfile.log, but it 
seems like my reading of the docs on this is incorrect and the 
logfile.log is not populated at all (though it is created). What 
am I missing or using incorrectly?

Basically I am trying to have the default logger log to a file 
instead of stderr.

(I am on a Mac (OS-X 10.11.1, 64 bit) and using DMD 2.069.2)
Jan 04 2016
next sibling parent reply Mike <mike lowland.com> writes:
On Tuesday, 5 January 2016 at 02:44:48 UTC, sanjayss wrote:

 I'm doing the following:

 import std.experimental.logger;

 int
 main(string[] args)
 {
 sharedLog = new FileLogger("logfile.log");

 log("Test log 1");
 log("Test log 2");
 log("Test log 3");
 }


 and I expected the logs to be seen in the logfile.log, but it 
 seems like my reading of the docs on this is incorrect and the 
 logfile.log is not populated at all (though it is created). 
 What am I missing or using incorrectly?

 Basically I am trying to have the default logger log to a file 
 instead of stderr.

 (I am on a Mac (OS-X 10.11.1, 64 bit) and using DMD 2.069.2)


You need to log with sharedLog:
sharedLog.log("Test log 1");
sharedLog.log("Test log 2");
sharedLog.log("Test log 3");
Jan 04 2016
parent reply sanjayss <dummy dummy.dummy> writes:
On Tuesday, 5 January 2016 at 02:49:01 UTC, Mike wrote:

 On Tuesday, 5 January 2016 at 02:44:48 UTC, sanjayss wrote:

 I'm doing the following:

 import std.experimental.logger;

 int
 main(string[] args)
 {
 sharedLog = new FileLogger("logfile.log");

 log("Test log 1");
 log("Test log 2");
 log("Test log 3");
 }


 and I expected the logs to be seen in the logfile.log, but it 
 seems like my reading of the docs on this is incorrect and the 
 logfile.log is not populated at all (though it is created). 
 What am I missing or using incorrectly?

 Basically I am trying to have the default logger log to a file 
 instead of stderr.

 (I am on a Mac (OS-X 10.11.1, 64 bit) and using DMD 2.069.2)


 You need to log with sharedLog:
 sharedLog.log("Test log 1");
 sharedLog.log("Test log 2");
 sharedLog.log("Test log 3");


Thanks, that works. But the docs are confusing -- it gives the 
impression that "sharedLog" is something associated with the 
default logger -- so I would expect the above to work with just 
the plain log() call to invoke the default logger. But it seems 
like I am just creating a new logger and using that by saying 
"sharedLog.log()".

 From the doc:

The default Logger will by default log to stderr and has a 
default LogLevel of LogLevel.all. The default Logger can be 
accessed by using the property called sharedLog. This property a 
reference to the current default Logger. This reference can be 
used to assign a new default Logger.

sharedLog = new FileLogger("New_Default_Log_File.log");
Jan 04 2016
parent reply Mike <mike lowland.com> writes:
On Tuesday, 5 January 2016 at 02:59:04 UTC, sanjayss wrote:

 On Tuesday, 5 January 2016 at 02:49:01 UTC, Mike wrote:

 [...]


 Thanks, that works. But the docs are confusing -- it gives the 
 impression that "sharedLog" is something associated with the 
 default logger -- so I would expect the above to work with just 
 the plain log() call to invoke the default logger. But it seems 
 like I am just creating a new logger and using that by saying 
 "sharedLog.log()".

 From the doc:

 The default Logger will by default log to stderr and has a 
 default LogLevel of LogLevel.all. The default Logger can be 
 accessed by using the property called sharedLog. This property 
 a reference to the current default Logger. This reference can 
 be used to assign a new default Logger.

 sharedLog = new FileLogger("New_Default_Log_File.log");


You are right, according to the docs your example should've 
worked just fine. Tried it myself on DMD 2.069.2 and it doesn't 
work either. You should raise an issue on github.
Jan 04 2016
parent Jonathan M Davis via Digitalmars-d-learn writes:
On Tuesday, January 05, 2016 03:01:14 Mike via Digitalmars-d-learn wrote:

 You are right, according to the docs your example should've
 worked just fine. Tried it myself on DMD 2.069.2 and it doesn't
 work either. You should raise an issue on github.


We don't use the issue system on github. We use bugzilla:

https://issues.dlang.org

Please report any issues you find there.

- Jonathan M Davis
Jan 05 2016
prev sibling parent reply Robert burner Schadek <rburners gmail.com> writes:
On Tuesday, 5 January 2016 at 02:44:48 UTC, sanjayss wrote:

 I'm doing the following:

 import std.experimental.logger;

 int
 main(string[] args)
 {
 sharedLog = new FileLogger("logfile.log");

 log("Test log 1");
 log("Test log 2");
 log("Test log 3");
 }


diff:
sharedLog = new FileLogger("logfile.log", LogLevel.all);

calling log uses the globalLogLevel, which is LogLevel.all by 
default.
The default LogLevel of a new FileLogger is LogLevel.info.
So the new FileLogger drops the log messages.

This is an inconsistency I will fix.
Jan 05 2016
parent sanjayss <dummy dummy.dummy> writes:
On Tuesday, 5 January 2016 at 09:18:21 UTC, Robert burner Schadek 
wrote:

 On Tuesday, 5 January 2016 at 02:44:48 UTC, sanjayss wrote:

 I'm doing the following:

 import std.experimental.logger;

 int
 main(string[] args)
 {
 sharedLog = new FileLogger("logfile.log");

 log("Test log 1");
 log("Test log 2");
 log("Test log 3");
 }


 diff:
 sharedLog = new FileLogger("logfile.log", LogLevel.all);

 calling log uses the globalLogLevel, which is LogLevel.all by 
 default.
 The default LogLevel of a new FileLogger is LogLevel.info.
 So the new FileLogger drops the log messages.

 This is an inconsistency I will fix.


Thanks -- seems like you found my bugzilla issue and fixed the 
problem. I'll try using your diff above and see if that helps me.
Jan 05 2016