experimental.logger: safe function and stdou
Andre via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Wed Nov 18 22:27:56 PST 2015
Hi,
I want to write log entries to stdout in JSON format. Therefore I
created
a customer logger. Unfortunatelly there are 2 errors with
following implementation:
module logger;
import std.experimental.logger;
import std.stdio: stdout;
class MyCustomLogger : Logger
{
private FileLogger _stdOutLogger;
this(LogLevel lv = LogLevel.all) @safe
{
super(lv);
_stdOutLogger = new FileLogger(stdout);
}
override void writeLogMsg(ref LogEntry payload)
{
with (payload)
{
_stdOutLogger.logf(logLevel, `{
"file":"%s", "line":%s, "funcName":"%s",
"prettyFuncName":"%s",
"moduleName":"%s", "logLevel":%s, "threadId":%s,
"timestamp":"%s", "msg":"%s"}`,
file, line, funcName, prettyFuncName, moduleName, logLevel,
threadId, timestamp);
}
}
}
static this()
{
stdThreadLocalLog = new MyCustomLogger();
}
source\logger.d(13,34): Error: safe function 'this' cannot access
__gshared data 'stdout'
source\logger.d(20,22): Error: safe function
'logger.MyCustomLogger.writeLogMsg' cannot call system function
'std.experimental.logger.core.Logger.logf!(20,
"source\\logger.d", "logger.MyCustomLogger.writeLogMsg", "void
logger.MyCustomLogger...
Also the example for creating an user defined logger is wrong:
http://dlang.org/phobos-prerelease/std_experimental_logger.html
There is a compilation error regarding variable newName in super.
newName seems not to be expected here.
Kind regards
André
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