Following is my code for writing logs to memory.When I am printing the memlog in Init() function. it always gives {[] 0 [0 0 0 0] [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] 0}.Please suggest what wrong I am doing.
https://play.golang.org/p/afW2YgF84d
Please check this link for my code
Pretty please format your code with the [code] macro
The code you have provided does not compile, you cannot call init() from main().
Can you share your code on the playground or a gist?
The code you provided calls init, which sets up the memory writer for your logger, then it prints the contents of the buffer then it exits.
I’m pretty sure that program won’t compile, and even if it did, it is doing no work.
I was able to write logs into the file but not able to write into memory from this code
This code doesn’t compile, and if it did, main calls init then exits. That is why you have no log data.
What do you expect this code will print?
As in the main function I have written “log.Info(“Connected to the first DB connection”)”.So When I am printing the memlog in Init function then something should write into memlog
This is written before you change the log output in Init
So what change I have to make to write this log to memory?
Here is your program with the unused portions removed.
func Init() { // this is a normal function, it is called from Main
var memLog bytes.Buffer
log.AddHook(ContextHook{}) // this sets a context hook, it is never called
log.SetOutput(&memLog) // this sets the output to memLog
fmt.Println(memLog) // this prints the contents of memLog, maybe you want fmt.Println(memLog.String())
}
func main(){
log.Info("Connected to the first DB connection") // this writes to logrus' default logger
Init() // this changes the logger to memlog
// then the program exits
}When I am calling init function before log.Info in main function then hook is calling but nothing is writing to memlog.
This is the program you are executing, with all the unused code removed
func main() {
log.Info("Connected to the first DB connection") // this writes to logrus' default logger
var memLog bytes.Buffer
log.SetOutput(&memLog) // this sets the output to memLog
fmt.Println(memLog) // this prints the contents of memLog, maybe you want fmt.Println(memLog.String())
// then the program exits
}Does this make it clear why nothing is written to memLog?
Nothing is printed because there are no log statements between setting the output to memLog and the program completing.
ok thanks.Can you tell me how can I read the logs in from memlogs at somewhere?
Thank you so much.Now its working and data writing to the memlogs
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