ceph-csi/vendor/github.com/hashicorp/go-hclog/stdlog.go
Niels de Vos 91774fc936 rebase: vendor dependencies for Vault API
Uses github.com/libopenstorage/secrets to communicate with Vault. This
removes the need for maintaining our own limited Vault APIs.

By adding the new dependency, several other packages got updated in the
process. Unused indirect dependencies have been removed from go.mod.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-11-29 04:03:59 +00:00

96 lines
2.2 KiB
Go

package hclog
import (
"bytes"
"log"
"strings"
)
// Provides a io.Writer to shim the data out of *log.Logger
// and back into our Logger. This is basically the only way to
// build upon *log.Logger.
type stdlogAdapter struct {
log Logger
inferLevels bool
forceLevel Level
}
// Take the data, infer the levels if configured, and send it through
// a regular Logger.
func (s *stdlogAdapter) Write(data []byte) (int, error) {
str := string(bytes.TrimRight(data, " \t\n"))
if s.forceLevel != NoLevel {
// Use pickLevel to strip log levels included in the line since we are
// forcing the level
_, str := s.pickLevel(str)
// Log at the forced level
s.dispatch(str, s.forceLevel)
} else if s.inferLevels {
level, str := s.pickLevel(str)
s.dispatch(str, level)
} else {
s.log.Info(str)
}
return len(data), nil
}
func (s *stdlogAdapter) dispatch(str string, level Level) {
switch level {
case Trace:
s.log.Trace(str)
case Debug:
s.log.Debug(str)
case Info:
s.log.Info(str)
case Warn:
s.log.Warn(str)
case Error:
s.log.Error(str)
default:
s.log.Info(str)
}
}
// Detect, based on conventions, what log level this is.
func (s *stdlogAdapter) pickLevel(str string) (Level, string) {
switch {
case strings.HasPrefix(str, "[DEBUG]"):
return Debug, strings.TrimSpace(str[7:])
case strings.HasPrefix(str, "[TRACE]"):
return Trace, strings.TrimSpace(str[7:])
case strings.HasPrefix(str, "[INFO]"):
return Info, strings.TrimSpace(str[6:])
case strings.HasPrefix(str, "[WARN]"):
return Warn, strings.TrimSpace(str[7:])
case strings.HasPrefix(str, "[ERROR]"):
return Error, strings.TrimSpace(str[7:])
case strings.HasPrefix(str, "[ERR]"):
return Error, strings.TrimSpace(str[5:])
default:
return Info, str
}
}
type logWriter struct {
l *log.Logger
}
func (l *logWriter) Write(b []byte) (int, error) {
l.l.Println(string(bytes.TrimRight(b, " \n\t")))
return len(b), nil
}
// Takes a standard library logger and returns a Logger that will write to it
func FromStandardLogger(l *log.Logger, opts *LoggerOptions) Logger {
var dl LoggerOptions = *opts
// Use the time format that log.Logger uses
dl.DisableTime = true
dl.Output = &logWriter{l}
return New(&dl)
}