severity.go

// Copyright 2019 The Cockroach Authors.
//
// Use of this software is governed by the Business Source License
// included in the file licenses/BSL.txt.
//
// As of the Change Date specified in that file, in accordance with
// the Business Source License, use of this software will be governed
// by the Apache License, Version 2.0, included in the file
// licenses/APL.txt.

package log

import (
	"strconv"
	"strings"
	"sync/atomic"
)

const severityChar = "IWEF"

// get returns the value of the Severity.
func (s *Severity) get() Severity {
	return Severity(atomic.LoadInt32((*int32)(s)))
}

// set sets the value of the Severity.
func (s *Severity) set(val Severity) {
	atomic.StoreInt32((*int32)(s), int32(val))
}

// Set is part of the flag.Value interface.
func (s *Severity) Set(value string) error {
	var threshold Severity
	// Is it a known name?
	if v, ok := SeverityByName(value); ok {
		threshold = v
	} else {
		v, err := strconv.Atoi(value)
		if err != nil {
			return err
		}
		threshold = Severity(v)
	}
	s.set(threshold)
	return nil
}

// Name returns the string representation of the severity (i.e. ERROR, INFO).
func (s *Severity) Name() string {
	return s.String()
}

// SeverityByName attempts to parse the passed in string into a severity. (i.e.
// ERROR, INFO). If it succeeds, the returned bool is set to true.
func SeverityByName(s string) (Severity, bool) {
	s = strings.ToUpper(s)
	if i, ok := Severity_value[s]; ok {
		return Severity(i), true
	}
	switch s {
	case "TRUE":
		return Severity_INFO, true
	case "FALSE":
		return Severity_NONE, true
	}
	return 0, false
}