log only certain levels

[Paul-Todd]

Hi,

Great library! Especially now supporting multiple loggers.

However I have a feature suggesting in that I would like to be able to only log certain levels of errors.
Ideally this level would be per logger but I guess the least impact would be in the main Lumberdash client.

Usecase:
Log error and fatal's to Crashlytics and the rest to the console.
Thanks

Paul

[jorgecoca]

@Paul-Todd I believe you could do that with the existing API, since lumberdash supports an exceptFor field:

lumberdash/lib/src/lumberdash.dart

Line 50 in 4c30df8

String logFatal(

Something like this (pseudo-code):

final shouldFilter = error.runtimeType == NonFatalError;
final exceptForClients = shouldFilter ? [PrintLumberdash] : [];
logError(error, exceptForClients);

If you have an idea for a different API, please share it with us and we can take a look ;)

[IchordeDionysos]

Yes, this is possible that way, but not very convenient don't you think?

Suppose you put logMessage all over in your project and then you add another logger for only logError then one would have to change every single logMessage to also include the new logger.

Having this option for some logs is cool, but the more common use-case and far more useful use-case would be to restrict it at the logger level.

You might say now:
Well, you can write your own logger. Yes, this works.

But it's not possible to customize an existing logger.

For example: We only want to log errors to sentry, so doing something like this:

SentryLumberdash.withDsn(
  dsn: "...", 
  logLevels: [LogLevel.warning, LogLevel.error]
);

The example above would give the developer the most freedom.

[fwagner]

We definitly see value in introducing the concept of log levels to lumberdash and being able to configure the routing of messages to appenders in a central location. It's on our roadmap and we may be able to add this later this year.