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Is there any good wrapper available for level based logging in golang? If not, how should I go about implementing one myself?
What I want is pretty simple. I want a few functions e.g.
log.Error() log.Info() etc that display their outputs to stdout as well as save these in a log file (based on the level given to the program as commandline argument). How do I implement this wrapper?
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Now create 2 directories inside the project directory, name one directory “src”, and name the other “log”, then create a new directory inside src directory and name it “utils”, then create a file inside utils directory and name it “helper.go” and as the last step here, create a file and name it “main.go” in the src ...
To log to a file, you can use the OS package to create a log file if it does not exist or open and write to an existing file. Doing so will set the output of the log package to the specified output file. Keep in mind that the log package also supports other output destination that supports io.
What is a logging level? A logging level is a way of classifying the entries in your log file in terms of urgency. Classifying helps filter your log files during search and helps control the amount of information in your logs. Sometimes, categorizing may require you to balance storage use.
The package log in Golang implements the simple logging package. It defines a type, Logger, with methods for formatting output. Golang Log will be helpful in the critical scenarios in real-time applications.
Some more suggestions, now that the existing answers are quite old:
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