CovenantSQL/utils/timer/timer.go at develop · rafaelphp/CovenantSQL · GitHub

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* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

package timer

import (

"sync"

"time"

"github.com/CovenantSQL/CovenantSQL/utils/log"

)

// Timer defines a stop watch timer for performance analysis.

type Timer struct {

sync.Mutex

start time.Time

names []string

pivots []time.Time

}

// NewTimer returns a new stop watch timer instance.

func NewTimer() *Timer {

return &Timer{

start: time.Now(),

}

// Add records a time pivot.

func (t *Timer) Add(name string) {

t.Lock()

defer t.Unlock()

t.names = append(t.names, name)

t.pivots = append(t.pivots, time.Now())

}

// ToLogFields returns analysis results as log fields.

func (t *Timer) ToLogFields() log.Fields {

var (

m = t.ToMap()

f = log.Fields{}

)

for k, v := range m {

f[k] = v

}

return f

}

// ToMap returns analysis results as time duration map.

func (t *Timer) ToMap() map[string]time.Duration {

t.Lock()

defer t.Unlock()

// calc

lp := len(t.pivots)

m := make(map[string]time.Duration, 1+lp)

for i := 0; i != lp; i++ {

var d time.Duration

if i == 0 {

d = t.pivots[i].Sub(t.start)

} else {

d = t.pivots[i].Sub(t.pivots[i-1])

}

m[t.names[i]] = d

if i+1 == lp {

// last one

m["total"] = t.pivots[i].Sub(t.start)

}

return m

}

CovenantSQL/utils/timer/timer.go at develop · rafaelphp/CovenantSQL · GitHub

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