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Signed-off-by: Yuri Nikolic <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| package log | ||
|
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| import "golang.org/x/time/rate" | ||
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| type rateLimitedLogger struct { | ||
| next Interface | ||
| limiter *rate.Limiter | ||
| } | ||
|
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| // NewRateLimitedLogger returns a logger.Interface that is limited to the given number of logs per second, | ||
| // with the given burst size. | ||
| func NewRateLimitedLogger(logger Interface, logsPerSecond rate.Limit, burstSize int) Interface { | ||
| return &rateLimitedLogger{ | ||
| next: logger, | ||
| limiter: rate.NewLimiter(logsPerSecond, burstSize), | ||
| } | ||
| } | ||
|
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| func (l *rateLimitedLogger) Debugf(format string, args ...interface{}) { | ||
| if l.limiter.Allow() { | ||
| l.next.Debugf(format, args...) | ||
| } | ||
| } | ||
|
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| func (l *rateLimitedLogger) Debugln(args ...interface{}) { | ||
| if l.limiter.Allow() { | ||
| l.next.Debugln(args...) | ||
| } | ||
| } | ||
|
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| func (l *rateLimitedLogger) Infof(format string, args ...interface{}) { | ||
| if l.limiter.Allow() { | ||
| l.next.Infof(format, args...) | ||
| } | ||
| } | ||
|
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| func (l *rateLimitedLogger) Infoln(args ...interface{}) { | ||
| if l.limiter.Allow() { | ||
| l.next.Infoln(args...) | ||
| } | ||
| } | ||
|
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| func (l *rateLimitedLogger) Errorf(format string, args ...interface{}) { | ||
| if l.limiter.Allow() { | ||
| l.next.Errorf(format, args...) | ||
| } | ||
| } | ||
|
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| func (l *rateLimitedLogger) Errorln(args ...interface{}) { | ||
| if l.limiter.Allow() { | ||
| l.next.Errorln(args...) | ||
| } | ||
| } | ||
|
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| func (l *rateLimitedLogger) Warnf(format string, args ...interface{}) { | ||
| if l.limiter.Allow() { | ||
| l.next.Warnf(format, args...) | ||
| } | ||
| } | ||
|
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| func (l *rateLimitedLogger) Warnln(args ...interface{}) { | ||
| if l.limiter.Allow() { | ||
| l.next.Warnln(args...) | ||
| } | ||
| } | ||
|
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| func (l *rateLimitedLogger) WithField(key string, value interface{}) Interface { | ||
| return &rateLimitedLogger{ | ||
| next: l.next.WithField(key, value), | ||
| limiter: l.limiter, | ||
| } | ||
| } | ||
|
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| func (l *rateLimitedLogger) WithFields(f Fields) Interface { | ||
| return &rateLimitedLogger{ | ||
| next: l.next.WithFields(f), | ||
| limiter: l.limiter, | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| package log | ||
|
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||
| import ( | ||
| "testing" | ||
| "time" | ||
|
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| "github.com/stretchr/testify/assert" | ||
| ) | ||
|
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| type counterLogger struct { | ||
| count int | ||
| } | ||
|
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| func (c *counterLogger) Debugf(_ string, _ ...interface{}) { c.count++ } | ||
| func (c *counterLogger) Debugln(_ ...interface{}) { c.count++ } | ||
| func (c *counterLogger) Infof(_ string, _ ...interface{}) { c.count++ } | ||
| func (c *counterLogger) Infoln(_ ...interface{}) { c.count++ } | ||
| func (c *counterLogger) Warnf(_ string, _ ...interface{}) { c.count++ } | ||
| func (c *counterLogger) Warnln(_ ...interface{}) { c.count++ } | ||
| func (c *counterLogger) Errorf(_ string, _ ...interface{}) { c.count++ } | ||
| func (c *counterLogger) Errorln(_ ...interface{}) { c.count++ } | ||
| func (c *counterLogger) WithField(_ string, _ interface{}) Interface { | ||
| return c | ||
| } | ||
| func (c *counterLogger) WithFields(Fields) Interface { | ||
| return c | ||
| } | ||
|
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| func TestRateLimitedLoggerLogs(t *testing.T) { | ||
| c := &counterLogger{} | ||
| r := NewRateLimitedLogger(c, 1, 1) | ||
|
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| r.Errorln("asdf") | ||
| assert.Equal(t, 1, c.count) | ||
| } | ||
|
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| func TestRateLimitedLoggerLimits(t *testing.T) { | ||
| c := &counterLogger{} | ||
| r := NewRateLimitedLogger(c, 2, 2) | ||
|
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| r.Errorln("asdf") | ||
| r.Infoln("asdf") | ||
| r.Debugln("asdf") | ||
| assert.Equal(t, 2, c.count) | ||
| time.Sleep(time.Second) | ||
| r.Infoln("asdf") | ||
| assert.Equal(t, 3, c.count) | ||
| } | ||
|
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| func TestRateLimitedLoggerWithFields(t *testing.T) { | ||
| c := &counterLogger{} | ||
| r := NewRateLimitedLogger(c, 1, 1) | ||
| r2 := r.WithField("key", "value") | ||
|
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| r.Errorf("asdf") | ||
| r2.Errorln("asdf") | ||
| r2.Warnln("asdf") | ||
| assert.Equal(t, 1, c.count) | ||
| } |
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