M.V. Hutz
6b946fb5dc
Refactors the event emitter system from string-based messages to a type-safe generic implementation using typed events. Consolidates separate tracker packages into a unified plugins architecture. Changes: - Replace Emitter with BaseEmitter[E comparable] using generics - Add Event type with StartEvent, StepEvent, and StopEvent constants - Create Listener[E] interface with BaseListener implementation - Consolidate explanation, performance, and statistics trackers into internal/plugins package - Simplify main CLI by using plugin constructors instead of manual event subscription - Add Items() iterator method to Set for idiomatic range loops
45 lines
845 B
Go
45 lines
845 B
Go
package plugins
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import (
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"fmt"
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"os"
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"time"
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"git.maximhutz.com/max/lambda/internal/engine"
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"git.maximhutz.com/max/lambda/internal/statistics"
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)
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// An observer, to track reduction performance.
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type Statistics struct {
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start time.Time
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steps uint64
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}
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// Create a new reduction performance Statistics.
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func NewStatistics(process *engine.Engine) *Statistics {
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plugin := &Statistics{}
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process.On(engine.StartEvent, plugin.Start)
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process.On(engine.StepEvent, plugin.Step)
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process.On(engine.StopEvent, plugin.Step)
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return plugin
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}
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func (t *Statistics) Start() {
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t.start = time.Now()
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t.steps = 0
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}
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func (t *Statistics) Step() {
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t.steps++
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}
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func (t *Statistics) Stop() {
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results := statistics.Results{
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StepsTaken: t.steps,
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TimeElapsed: uint64(time.Since(t.start).Milliseconds()),
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}
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fmt.Fprint(os.Stderr, results.String())
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}
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