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hashicorp.go
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hashicorp.go
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// Copyright (C) 2021 Mya Pitzeruse
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package zaputil
import (
"io"
"log"
"strings"
"go.uber.org/zap"
)
// hashiWriter parses lines written from the Hashicorp ecosystem to proper log levels for zap. The format is as follows:
// [LEVEL] system: message.
type hashiWriter struct {
logger *zap.Logger
}
func (w *hashiWriter) Write(p []byte) (n int, err error) {
line := string(p)
parts := strings.SplitN(line, " ", 3)
for len(parts) < 3 {
parts = append(parts, "")
}
level := strings.TrimSuffix(strings.TrimPrefix(parts[0], "["), "]")
name := strings.TrimSuffix(parts[1], ":")
msg := strings.TrimSpace(parts[2])
fields := []zap.Field{
zap.String("name", name),
}
switch level {
case "DEBUG", "debug":
w.logger.Debug(msg, fields...)
case "INFO", "info":
w.logger.Info(msg, fields...)
case "WARN", "warn":
w.logger.Warn(msg, fields...)
case "ERR", "ERROR", "error":
w.logger.Error(msg, fields...)
}
return len(p), nil
}
var _ io.Writer = &hashiWriter{}
// HashicorpStdLogger
// Deprecated.
func HashicorpStdLogger(logger *zap.Logger) *log.Logger {
return HashiCorpStdLogger(logger)
}
// HashiCorpStdLogger wraps the provided logger with a golang logger to log messages at the appropriate level using the
// HashiCorp log format. Useful for replacing serf and membership loggers.
func HashiCorpStdLogger(logger *zap.Logger) *log.Logger {
w := &hashiWriter{
logger: logger.WithOptions(zap.AddCallerSkip(3)),
}
return log.New(w, "", 0)
}