open-nomad/command/agent/http_stdlog.go

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package agent
import (
"bytes"
"log"
hclog "github.com/hashicorp/go-hclog"
)
func newHTTPServerLogger(logger hclog.Logger) *log.Logger {
return log.New(&httpServerLoggerAdapter{logger}, "", 0)
}
// a logger adapter that forwards http server logs as a Trace level
// hclog log entries. Logs related to panics are forwarded with Error level.
//
// HTTP server logs are typically spurious as they represent HTTP
// client errors (e.g. TLS handshake failures).
type httpServerLoggerAdapter struct {
logger hclog.Logger
}
func (l *httpServerLoggerAdapter) Write(data []byte) (int, error) {
if bytes.Contains(data, []byte("panic")) {
str := string(bytes.TrimRight(data, " \t\n"))
l.logger.Error(str)
} else if l.logger.IsTrace() {
str := string(bytes.TrimRight(data, " \t\n"))
l.logger.Trace(str)
}
return len(data), nil
}