Cannot specify a log level from the CLI

[NotMyself]

I am attempting to write an interactive tutorial and want to use dotnet-watch. I would like to suppress the info messages printed out by the watch command so that only messages from my tutorial are displayed.

I have tried adding a logging.json file, but it doesn't seem to be respected. The log level in the Tools project appears to be hard coded to info. How can I override it?

[victorhurdugaci]

Agree, it would be a nice feature. It's a bit tricky to implement because we need a way to pass arguments to dotnet watch. Today, it just passes everything to dotnet. We'll definitely investigate this

[NotMyself]

It might be as simple as looking for a logging.json so it can be configured externally.

[muratg]

Assigning to @victorhurdugaci for invesigation in 1.1.0.

[victorhurdugaci]

Hey @glennc, what do you think about this one?

[glennc]

hmmm. What are examples of the output that you want to suppress? Is it all output from watch?

I am thinking a switch passed to watch to stop it from logging anything. -[q]uite

[victorhurdugaci]

Talked to @glennc offline. We'll make this configurable through and environment variable, just like we do for enabling the polling watcher.

[NotMyself]

Here is an example from the DotNetCoreKoans project. The project is a teaching tool where the student is instructed to open the project in a text editor and then run dotnet watch run in their console. The student then changes code in a set of unit tests learning about the C# language. The output of the application guides them through each tutorial.

When running the application without the watcher, I have complete control over the output. With the watcher, it clutters up the output making it hard to follow.

At a minimum it would be nice to have the watcher respect a config file or a flag to specify silent output.

[muratg]

Would we be still displaying errors in "quiet" mode, and just be silent otherwise? Or completely silent?

[victorhurdugaci]

The value you set in the env var will be the value from the LogLevel enum. If you set it to none nothing will be displayed while if you set it to error only error (and above) will be displayed. So, it's not a "quiet mode"

[victorhurdugaci]

Hey @NotMyself , I added a new flag to allow you to turn off the log messages. See the updated readme for usage.

[natemcmaster]

In #197, we added --verbose and --quiet options to dotnet-watch.

We also removed the env variable added in #155. It's worth noting that #197 also added support for the global dotnet-cli verbose flag (usage dotnet --verbose watch) which can also be set via the env variable DOTNET_CLI_CONTEXT_VERBOSE=true