hugo/common/loggers/ignorableLogger.go

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// Copyright 2020 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package loggers
import (
"fmt"
"strings"
)
// IgnorableLogger is a logger that ignores certain log statements.
type IgnorableLogger interface {
Logger
Errorsf(statementID, format string, v ...interface{})
}
type ignorableLogger struct {
Logger
statements map[string]bool
}
// NewIgnorableLogger wraps the given logger and ignores the log statement IDs given.
func NewIgnorableLogger(logger Logger, statements ...string) IgnorableLogger {
statementsSet := make(map[string]bool)
for _, s := range statements {
statementsSet[strings.ToLower(s)] = true
}
return ignorableLogger{
Logger: logger,
statements: statementsSet,
}
}
// Errorsf logs statementID as an ERROR if not configured as ignoreable.
func (l ignorableLogger) Errorsf(statementID, format string, v ...interface{}) {
if l.statements[statementID] {
// Ignore.
return
}
ignoreMsg := fmt.Sprintf(`
If you feel that this should not be logged as an ERROR, you can ignore it by adding this to your site config:
ignoreErrors = [%q]`, statementID)
format += ignoreMsg
l.Errorf(format, v...)
}