Logrus output in different formats

php editor Zimo brings you an article about logrus output. During the development process, we often need to output logs to help us troubleshoot problems and track the code execution process. Logrus is a powerful logging library that can output logs in different formats, such as JSON, text or custom formats. This article will introduce the different formats of logrus output logs, help developers choose the appropriate output format according to their needs, and improve the readability and usability of logs.

Question content

My program uses logrus in a basic way, without any configuration:

<code>   logrus.Info("...")
</code>

But in different places, it is output in different formats, some places such as:

INFO[0016] pushed

There are also some places, such as:

time="2023-11-30T05:26:39Z" level=info msg=pushed

I don’t know what’s the mystery behind it?

Solution

Let me answer this question myself. I looked at the logrus code over the weekend and noticed something tricky.

logrusThere is a mechanism to detect whether the current terminal has color. If so, it will be output in the format of INFO[0000] Pushed, otherwise it will be output in the format of time= "2023-11-30T05:26:39Z" level= output information in the format msg=pushed.

So if you want to always output in the first format (shorter) then you just set the forced color:

    logrus.SetFormatter(&logrus.TextFormatter{
        ForceColors: true,
    })

If you want the second format, just force disable the colors:

    logrus.SetFormatter(&logrus.TextFormatter{
        DisableColors: true,
    })

You can also configure the time format.

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