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error_handler.go
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/
error_handler.go
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package send
import (
"fmt"
"io"
"log"
"github.com/tychoish/fun/ers"
"github.com/tychoish/grip/level"
"github.com/tychoish/grip/message"
)
const ErrGripMessageSendError ers.Error = "unable to send grip log message"
// WrapError wraps an error with the message composer and produces a
// combined error that includes the string form of the message (as an
// error,) ErrGripMessageSendError, and the underlying error. When the
// input error is nil, the error is nil.
func WrapError(err error, m message.Composer) error {
if ers.OK(err) {
return nil
}
return ers.Join(ErrGripMessageSendError, err, ers.Error(m.String()))
}
func ErrorHandlerWriter(writer io.Writer) ErrorHandler {
return func(err error) {
if err == nil {
return
}
_, _ = io.WriteString(writer, fmt.Sprintln("logging error:", err.Error()))
_, _ = writer.Write([]byte("\n"))
}
}
func ErrorHandlerFromLogger(l *log.Logger) ErrorHandler {
return func(err error) {
if err == nil {
return
}
l.Println("logging error:", err.Error())
}
}
// ErrorHandlerFromSender wraps an existing Sender for sending error messages.
func ErrorHandlerFromSender(s Sender) ErrorHandler {
return func(err error) {
if err == nil {
return
}
em := message.MakeError(err)
em.SetPriority(level.Error)
s.Send(em)
}
}