mirror of
https://github.com/google/glazier.git
synced 2025-12-19 18:27:35 -05:00
82 lines
2.0 KiB
Go
82 lines
2.0 KiB
Go
// Copyright 2021 Google LLC
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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 timers stores points in time to be used for metrics.
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package timers
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import (
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"fmt"
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"time"
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"golang.org/x/sys/windows/registry"
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)
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const (
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timerFmt = "2006-01-02 15:04:05.000000+00:00"
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)
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var (
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// TimersRoot indicates the root Timers registry key.
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TimersRoot = `SOFTWARE\Glazier\Timers`
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)
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// A Timer stores named time elements.
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type Timer struct {
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Name string
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Time time.Time
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}
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// NewTimer creates a new Timer.
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func NewTimer(name string, at *time.Time) *Timer {
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if at == nil {
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t := time.Now().UTC()
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at = &t
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}
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return &Timer{Name: name, Time: *at}
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}
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// Load loads a timer object into the registry.
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func (t *Timer) Load() error {
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k, err := registry.OpenKey(registry.LOCAL_MACHINE, TimersRoot, registry.QUERY_VALUE)
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if err != nil {
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return fmt.Errorf("reg.OpenKey: %w", err)
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}
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defer k.Close()
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v, _, err := k.GetStringValue("TIMER_" + t.Name)
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if err != nil {
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return fmt.Errorf("GetStringValue: %w", err)
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}
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p, err := time.Parse(timerFmt, v)
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if err != nil {
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return fmt.Errorf("time.Parse: %w", err)
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}
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t.Time = p
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return nil
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}
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// Record records a timer object into the registry.
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func (t *Timer) Record() error {
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k, _, err := registry.CreateKey(registry.LOCAL_MACHINE, TimersRoot, registry.WRITE)
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if err != nil {
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return err
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}
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defer k.Close()
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return k.SetStringValue("TIMER_"+t.Name, t.TimeString())
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}
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// TimeString renders a timer's time value with the default formatting.
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func (t *Timer) TimeString() string {
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return t.Time.Format(timerFmt)
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}
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