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logger.go
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logger.go
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// Copyright (c) 2021 Terminus, Inc.
//
// 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 gormutil
import (
"context"
"fmt"
"os"
"time"
"gorm.io/gorm/logger"
)
type SQLCollector struct {
logger.Interface
filename string
}
func NewSQLCollector(filename string, baseLogger logger.Interface) (*SQLCollector, error) {
if baseLogger == nil {
baseLogger = &logger.Recorder
}
file, err := os.OpenFile(filename, os.O_CREATE|os.O_TRUNC|os.O_RDWR, 0644)
if err != nil {
return nil, err
}
defer file.Close()
return &SQLCollector{
Interface: baseLogger,
filename: filename,
}, nil
}
func (c SQLCollector) Trace(ctx context.Context, begin time.Time, fc func() (string, int64), err error) {
c.Interface.Trace(ctx, begin, fc, err)
sql, _ := fc()
c.collect(begin, sql)
}
func (c SQLCollector) collect(begin time.Time, sql string) {
if file, err := os.OpenFile(c.filename, os.O_CREATE|os.O_APPEND|os.O_RDWR, 0644); err == nil {
_, _ = fmt.Fprintf(file, "/*-BEGIN: %s-*/\n", begin.Format(time.RFC3339))
_, _ = file.WriteString(sql + " /*-LINE END-*/\n")
}
}