43 lines
1001 B
Go
43 lines
1001 B
Go
package logging
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import (
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"bytes"
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"fmt"
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"log"
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"log/slog"
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"os"
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)
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func Logging() {
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log.Println("Baby's first log!")
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log.SetFlags(log.LstdFlags | log.Lmicroseconds)
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log.Println("Log with microseconds!")
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log.SetFlags(log.LstdFlags | log.Lshortfile)
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log.Println("Now with filename!")
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mlog := log.New(os.Stdout, "[mlog] ", log.LstdFlags|log.Lshortfile)
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mlog.Println("My own logger!")
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mlog.SetPrefix("[mlog with SetPrefix] ")
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mlog.Println("Changed prefix")
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var logBuffer bytes.Buffer
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buflog := log.New(&logBuffer, "[bytes] ", log.LstdFlags|log.Lshortfile)
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buflog.Println("Writing to a bytes buffer")
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buflog.Println("Writing more to the bytes buffer")
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fmt.Println()
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fmt.Println("Printing logs from bytes buffer below:")
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fmt.Println(logBuffer.String())
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jsonHandler := slog.NewJSONHandler(os.Stderr, nil)
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jlog := slog.New(jsonHandler)
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jlog.Info("First json log entry")
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jlog.Info("kv args", "key1", 1, "key2", 2, "key3", true)
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jlog.Warn("warning!!!")
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jlog.Error("error!!!")
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}
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