internal/serving/disk/zip/serving.go

package zip

import (
	"sync"

	"gitlab.com/gitlab-org/gitlab-pages/internal/config"
	"gitlab.com/gitlab-org/gitlab-pages/internal/serving"
	"gitlab.com/gitlab-org/gitlab-pages/internal/serving/disk"
	"gitlab.com/gitlab-org/gitlab-pages/internal/vfs"
	"gitlab.com/gitlab-org/gitlab-pages/internal/vfs/zip"
)

var instance serving.Serving
var once = sync.Once{}

// Instance returns a serving instance that is capable of reading files
// from a zip archives opened from a URL, most likely stored in object storage
func Instance() serving.Serving {
	once.Do(func() {
		instance = disk.New(vfs.Instrumented(zip.New(&config.ZipServing{})))
	})
	return instance
}

// NewInstance returns a serving instance that is capable of reading files
// from a zip archives opened from a URL, most likely stored in object storage
func NewInstance() serving.Serving {
	// This is used in test and should be similar to above Instance method.
	return disk.New(vfs.Instrumented(zip.New(&config.ZipServing{})))
}