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Halil Coban
40 lines
1.2 KiB
Go
40 lines
1.2 KiB
Go
package level_test
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import (
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"errors"
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"os"
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"github.com/go-kit/kit/log"
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"github.com/go-kit/kit/log/level"
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)
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func Example_basic() {
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logger := log.NewLogfmtLogger(os.Stdout)
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level.Debug(logger).Log("msg", "this message is at the debug level")
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level.Info(logger).Log("msg", "this message is at the info level")
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level.Warn(logger).Log("msg", "this message is at the warn level")
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level.Error(logger).Log("msg", "this message is at the error level")
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// Output:
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// level=debug msg="this message is at the debug level"
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// level=info msg="this message is at the info level"
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// level=warn msg="this message is at the warn level"
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// level=error msg="this message is at the error level"
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}
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func Example_filtered() {
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// Set up logger with level filter.
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logger := log.NewLogfmtLogger(os.Stdout)
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logger = level.NewFilter(logger, level.AllowInfo())
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logger = log.With(logger, "caller", log.DefaultCaller)
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// Use level helpers to log at different levels.
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level.Error(logger).Log("err", errors.New("bad data"))
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level.Info(logger).Log("event", "data saved")
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level.Debug(logger).Log("next item", 17) // filtered
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// Output:
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// level=error caller=example_test.go:32 err="bad data"
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// level=info caller=example_test.go:33 event="data saved"
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}
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