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44 lines
1.4 KiB
44 lines
1.4 KiB
6 years ago
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// Copyright (c) 2017 Uber Technologies, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package metrics
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import (
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"time"
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)
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// StartStopwatch begins recording the executing time of an event, returning
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// a Stopwatch that should be used to stop the recording the time for
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// that event. Multiple events can be occurring simultaneously each
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// represented by different active Stopwatches
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func StartStopwatch(timer Timer) Stopwatch {
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return Stopwatch{t: timer, start: time.Now()}
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}
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// A Stopwatch tracks the execution time of a specific event
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type Stopwatch struct {
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t Timer
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start time.Time
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}
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// Stop stops executing of the stopwatch and records the amount of elapsed time
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func (s Stopwatch) Stop() {
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s.t.Record(s.ElapsedTime())
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}
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// ElapsedTime returns the amount of elapsed time (in time.Duration)
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func (s Stopwatch) ElapsedTime() time.Duration {
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return time.Since(s.start)
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}
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