Source: experiment.go in package golang.org/x/pkgsite/internal/experiment

Source File
	experiment.go

Belonging Package
	golang.org/x/pkgsite/internal/experiment

Package experiment provides functionality for experiments.

package experiment

import (
	"context"
)

type contextKey struct{}

Set is the set of experiments that are enabled for a request.

type Set struct {
	set map[string]bool
}

Active returns a list of all the active experiments in s.

func (s *Set) Active() []string {
	if s == nil {
		return nil
	}
	var es []string
	for e := range s.set {
		es = append(es, e)
	}
	return es
}

FromContent returns the set of experiments enabled for the content.

func FromContext(ctx context.Context) *Set {
	s, _ := ctx.Value(contextKey{}).(*Set)
	return s
}

NewSet creates a new experiment.Set with the data provided.

func NewSet(experimentNames ...string) *Set {
	set := map[string]bool{}
	for _, e := range experimentNames {
		set[e] = true
	}
	return &Set{set: set}
}

NewContext stores a set constructed from the provided experiment names in the context.

func NewContext(ctx context.Context, experimentNames ...string) context.Context {
	return context.WithValue(ctx, contextKey{}, NewSet(experimentNames...))
}

IsActive reports whether an experiment is active for this set.

func IsActive(ctx context.Context, experiment string) bool {
	return FromContext(ctx).IsActive(experiment)
}

IsActive reports whether an experiment is active for this set.

func (s *Set) IsActive(experiment string) bool {
	if s == nil {
		return false
	}
	return s.set[experiment]


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