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https://github.com/golang/go
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7667e13ae9
Modifies the various Subscriber signatures to take in an "at" time.Time field, which captures the time that a measurement was made. This field will then be used when exporting points as their EndTime. Fixes #34490. Change-Id: I9e87b65e374876ae3d4df0abedb64bb7dcb221b6 Reviewed-on: https://go-review.googlesource.com/c/tools/+/199577 Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com> Reviewed-by: Ian Cottrell <iancottrell@google.com>
102 lines
3.2 KiB
Go
102 lines
3.2 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package stats provides support for recording telemetry statistics.
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// It acts as a coordination point between things that want to record stats,
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// and things that want to aggregate and report stats.
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package stats
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import (
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"context"
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"time"
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"golang.org/x/tools/internal/telemetry/unit"
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)
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// Int64Measure is used to record integer values.
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type Int64Measure struct {
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name string
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description string
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unit unit.Unit
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subscribers []Int64Subscriber
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}
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// Int64Measure is used to record floating point values.
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type Float64Measure struct {
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name string
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description string
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unit unit.Unit
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subscribers []Float64Subscriber
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}
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// Int64Subscriber is the type for functions that want to listen to
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// integer statistic events.
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type Int64Subscriber func(ctx context.Context, im *Int64Measure, value int64, at time.Time)
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// Float64Subscriber is the type for functions that want to listen to
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// floating point statistic events.
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type Float64Subscriber func(ctx context.Context, fm *Float64Measure, value float64, at time.Time)
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// Int64 creates a new Int64Measure and prepares it for use.
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func Int64(name string, description string, unit unit.Unit) *Int64Measure {
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return &Int64Measure{
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name: name,
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description: description,
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unit: unit,
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}
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}
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// Float64 creates a new Float64Measure and prepares it for use.
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func Float64(name string, description string, unit unit.Unit) *Float64Measure {
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return &Float64Measure{
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name: name,
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description: description,
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unit: unit,
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}
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}
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// Name returns the name this measure was given on construction.
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func (m *Int64Measure) Name() string { return m.name }
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// Description returns the description this measure was given on construction.
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func (m *Int64Measure) Description() string { return m.description }
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// Unit returns the units this measure was given on construction.
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func (m *Int64Measure) Unit() unit.Unit { return m.unit }
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// Subscribe adds a new subscriber to this measure.
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func (m *Int64Measure) Subscribe(s Int64Subscriber) { m.subscribers = append(m.subscribers, s) }
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// Record delivers a new value to the subscribers of this measure.
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func (m *Int64Measure) Record(ctx context.Context, value int64) {
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at := time.Now()
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do(func() {
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for _, s := range m.subscribers {
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s(ctx, m, value, at)
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}
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})
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}
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// Name returns the name this measure was given on construction.
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func (m *Float64Measure) Name() string { return m.name }
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// Description returns the description this measure was given on construction.
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func (m *Float64Measure) Description() string { return m.description }
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// Unit returns the units this measure was given on construction.
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func (m *Float64Measure) Unit() unit.Unit { return m.unit }
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// Subscribe adds a new subscriber to this measure.
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func (m *Float64Measure) Subscribe(s Float64Subscriber) { m.subscribers = append(m.subscribers, s) }
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// Record delivers a new value to the subscribers of this measure.
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func (m *Float64Measure) Record(ctx context.Context, value float64) {
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at := time.Now()
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do(func() {
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for _, s := range m.subscribers {
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s(ctx, m, value, at)
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}
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})
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}
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