Propagate detailled errors up the call stack
type Terr struct {
From string
Level string
Error error
File string
Line int
}
type Trace struct {
Errors []*Terr
}New (errObj interface{}, level ...string) *Trace : create a trace from an error or a string
func foo() *terr.Trace {
tr := terr.New("Error one")
return tr
}
func bar() *terr.Trace {
err := errors.New("Error one")
tr := terr.New(err)
return tr
}Trace.Add (errObj interface{}, level ...string) *Trace : adds to a trace from an error message string
func myfunc2() *terr.Trace {
tr := myfunc()
tr := tr.Add("Error two", "warning")
return tr
}Trace.Pass (level ...string) *Trace : adds a trace with no new error message: it just records the function call
tr := myfunc2()
tr = tr.Pass()Trace.Check: prints the trace if some errors are present
tr := myfunc2()
tr.Check()Trace.Err () error: returns the full trace as a standard error
tr := myfunc2()
err := tr.Err()Trace.Print: print the trace's coloured error message
tr := myfunc2()
tr.Print()Trace.Msg () string: returns the trace's coloured error message
tr := myfunc2()
fmt.Println(tr.Msg())Trace.Log () string: returns the last error message of the trace
tr := myfunc2()
tr.Log()Trace.Stack (errObj interface{}, level ...string): same as Trace.Add but adds the stack trace message of the error in the message
func myfunc3() *terr.Trace {
tr := myfunc2()
tr := tr.Stack("Error two", "debug")
return tr
}Trace.Fatal (errObj interface{}, level ...string): same as Trace.Stack and exits the program
func myfunc4() *terr.Trace {
tr := myfunc3()
tr := tr.Fatal("Error two")
return tr
}debug, info, warning, error (default), fatal, panic
Check the examples
package main
import (
"errors"
"github.com/synw/terr"
)
func f1() *terr.Trace {
tr := terr.New("First error")
return tr
}
func f2() *terr.Trace {
tr := f1()
err := errors.New("Second error")
tr = tr.Add(err)
return tr
}
func main() {
tr := f2()
tr.Check()
}Output:
0 [error ] Second error from main.f2 line 18 in /home/me/terr/example/simple.go
1 [error ] First error from main.f1 line 11 in /home/me/terr/example/simple.go