How to automatically log structures via Zerolog?

php editor Xigua introduces you how to automatically record the structure through Zerolog. Zerolog is a high-performance logging library that helps us automatically record structured logs in applications. By using Zerolog, we can easily log information to different output sources such as console, file or remote server. At the same time, Zerolog also provides rich log levels, field addition and formatting functions, allowing us to control and manage log information more flexibly. Next, let’s learn how to use Zerolog to automatically record structured logs!

Question content

I am using zerolog to log in to the go application. I want to log a map (json) and found a way:

log.info().
    str("foo", "bar").
    dict("dict", zerolog.dict().
        str("bar", "baz").
        int("n", 1),
    ).msg("hello world")

// output: {"level":"info","time":1494567715,"foo":"bar","dict":{"bar":"baz","n":1},"message":"hello world"}

In the above example, I need to specify each key-value pair in the zerolog.dict() method. I'd like to know if there is a way to automatically document struct.

For example, I have a structure like this:

type message struct {
    aws_region     string `json:"region"`
    log_level      string `json:"level"`
    stage          string `json:"stage"`
    request_id     string `json:"requestid"`
}

I'm looking for a way to pass a message instance to

msg := Message{ ... }
zerolog.Dict("message", msg)

Workaround

You can use the Interface method to achieve this.

Example

But please note that Interface uses reflection for serialization, so short code will come at the cost of performance

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