I have a go program, MyPackage, and a logging package within this, MyPackage/logs. We have a function func Cleanup(params CleanupParams) written in MyPackage that we want to use as a callback in case of any panic within our log function implemented in MyPackage/logs. This function is already written and being used by MyPackage, so we could all the code across but this would be very messy and involve a lot of copying dependent functions.
The approach I am thinking is this: In MyPackage, we have a function func SetupLogs, and could pass this Cleanup callback function as a parameter. However this ends up being a circular dependency, just since we have reference to a function on MyPackage from our logs package. Is there a way to pass this function, maybe with type any?
package MyPackage
import . "MyPackage/logs"
func main() {
cleanupParams := ...
...
SetupLogs(Cleanup, cleanupParams)
...
}
func Cleanup(params *CleanupParams) {
...
}
And our logs package:
package MyPackage/logs
type LogCallback func(*CleanupParams)
func SetupLogs(callback LogCallback, cleanupParams *CleanupParams) {
...
go LogLoop(callback, cleanupParams)
}
func LogLoop(callback LogCallback, cleanupParams *CleanupParams) {
defer callback(cleanupParams)
for {
// Keep checking if we have been channelled another message to log
// If we are logging and have to Panic() then our callback gets run
}
}
So is there any way to call the parent function from the imported class, since we don't need to know anything about the types of the function or its parameters, we just need to push our program to make sure the method gets called?
Thank you!
