55 lines
1011 B
Go
55 lines
1011 B
Go
package csv
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import (
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"encoding/csv"
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"os"
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"go.uber.org/fx"
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"go.uber.org/zap"
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)
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type Helper struct {
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fx.In
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csvFile *os.File
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csvWriter *csv.Writer
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logger *zap.Logger
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}
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func NewHelper(lc fx.Lifecycle, logger *zap.Logger) *Helper {
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csvFile, err := os.OpenFile("mqtt-logs.csv", os.O_CREATE|os.O_RDWR|os.O_APPEND, 0644)
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if err != nil {
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logger.Fatal("error opening csv file", zap.Error(err))
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}
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csvWriter := csv.NewWriter(csvFile)
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return &Helper{
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csvFile: csvFile,
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csvWriter: csvWriter,
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logger: logger,
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}
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}
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func (h *Helper) AddEntry(date string, topic string, message string) error {
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record := []string{date, topic, message}
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if err := h.csvWriter.Write(record); err != nil {
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h.logger.Error("error writing to csv file", zap.Error(err))
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return err
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}
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h.csvWriter.Flush()
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return nil
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}
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func (h *Helper) Close() error {
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h.csvWriter.Flush()
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if err := h.csvFile.Close(); err != nil {
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h.logger.Error("error closing csv file", zap.Error(err))
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return err
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}
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return nil
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}
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