Dhruv Pal Singh Rana dhruvr
dhruvr
/ Callthis.go
Last active
October 9, 2019 18:13
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| //f represnts io.file | |
| // incase I don't need lumberjack and want to | |
| // write to both Stdout and file | |
| multi := io.MultiWriter(os.Stdout, f) | |
| l := ConfigureLogrus(multi) | |
| // in case I don't need lumberjack and want to | |
| // write to file only |
dhruvr
/ logurwriter.go
Created
September 21, 2019 21:38
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| func ConfigureLogrus(output io.Writer) *logrus.Logger { | |
| logger := logrus.New() | |
| logger.SetLevel(logrus.DebugLevel) | |
| logger.SetFormatter(&logrus.TextFormatter{ | |
| DisableColors: false, | |
| FullTimestamp: true, | |
| TimestampFormat: "2006-01-02 15:04:05.000", | |
| ForceColors: true, | |
| DisableLevelTruncation: true, | |
| }) |
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| func configureLogrus(lumberjackConfig *lumberjack.Logger) *logrus.Logger { | |
| logger := logrus.New() | |
| logger.SetLevel(logrus.DebugLevel) | |
| logger.SetFormatter(&logrus.TextFormatter{ | |
| DisableColors: false, | |
| FullTimestamp: true, | |
| TimestampFormat: "2006-01-02 15:04:05.000", | |
| ForceColors: true, | |
| DisableLevelTruncation: true, | |
| }) |
dhruvr
/ fakeResourceclose.go
Created
September 21, 2019 21:36
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| func (f FakeResource) Close() error{ | |
| var err error | |
| //close fake resouce | |
| //if fails return error | |
| //lets return err here | |
| return err | |
| } |
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| type FakeResource struct{ | |
| //some fake resource | |
| } |
dhruvr
/ deferClose.go
Created
September 21, 2019 21:34
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| db, err := sql.Open(confs.DBDriverName, connectionString) | |
| if err != nil { | |
| log.Fatalln("Problem while setting up the data base ", wErr) | |
| } | |
| if wErr = db.Ping(); err != nil { | |
| log.Fatalln("Problem while pinging to the data base ", err) | |
| } | |
| defer Close(db) |
dhruvr
/ Closedb.go
Created
September 21, 2019 21:33
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| func (db *DB) Close() error { | |
| ... | |
| } |
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| func Close(r io.Closer) { | |
| err := r.Close() | |
| if err != nil { | |
| logger.Errorn("Problem while closing the connection", err) | |
| } | |
| } |
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| func main(){ | |
| fileName := "xyz.txt" | |
| f, err := os.OpenFile(fileName, os.O_WRONLY|os.O_CREATE, 0755) | |
| if err != nil { | |
| if os.IsNotExist(err) { | |
| log.Fatalf("Fatal, Problem while opening file %v for logging, err: %v \n", args.logFile, err) | |
| } | |
| } | |
| //----------------------------- |
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| func Close(r *os.File) { | |
| err := r.Close() | |
| if err != nil { | |
| logger.Errorn("Problem while closing the connection", err) | |
| } | |
| } |
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