CODEWITHSUNDEEP
exceptiongoruntime-errorpanic
sohruin
sohruin

Reputation: 41

How to avoid affecting other code when panic error or something else in golang

I am writing a monitor program that will merge into company's system. When the program running, seldom panicked some error since a variety of problem such as a few other's server doesn't obtain the rule of http, network error or anything else.I fix most of them but I am still afraid of influence on the master program by possibly potential errors.

From company's aspect, the stability of master program is most important, secondly, monitoring's result, the stability of monitoring is low-priority.

Is there have a method can isolate error? For example,"try...except Exception..." in python to ignore error(Admittedly, Not recommended)How to avoid effect other code when panic error or something else in golang

Upvotes: 3

Views: 1110

Answers (2)

Himanshu
Himanshu

Reputation: 12675

User recover function at the top of your function in which you have the chances of getting error. Don't use panic as it will stop the execution of your code. Use below code snippet. Also It will print the log which will let you know in which function the exception occurred.

defer func() {
    if r := recover(); r != nil {
        log.Println("Recovered in custom function", r)
    }
}()

Upvotes: 1

Кирилл Семенченко
Кирилл Семенченко

Reputation: 49

With panics, you can use recover like this

func recoverExample() {
    defer func() {
        if panicMessage := recover(); panicMessage != nil {
            fmt.Printf("Panic '%v' captured", panicMessage)
        }
    }()
    panic("Oh no!")
}

With output:

Panic 'Oh no!' captured

Upvotes: 3

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