frostfs-node/pkg/services/object/search/service.go

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package searchsvc
import (
"github.com/nspcc-dev/neofs-api-go/pkg/client"
cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id"
"github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-node/pkg/core/netmap"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine"
"github.com/nspcc-dev/neofs-node/pkg/network"
"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
"github.com/nspcc-dev/neofs-node/pkg/util/logger"
"go.uber.org/zap"
)
// Service is an utility serving requests
// of Object.Search service.
type Service struct {
*cfg
}
// Option is a Service's constructor option.
type Option func(*cfg)
type searchClient interface {
searchObjects(*execCtx) ([]*object.ID, error)
}
type ClientConstructor interface {
Get(*network.Address) (client.Client, error)
}
type cfg struct {
log *logger.Logger
localStorage interface {
search(*execCtx) ([]*object.ID, error)
}
clientConstructor interface {
get(*network.Address) (searchClient, error)
}
traverserGenerator interface {
generateTraverser(*cid.ID, uint64) (*placement.Traverser, error)
}
currentEpochReceiver interface {
currentEpoch() (uint64, error)
}
}
func defaultCfg() *cfg {
return &cfg{
log: zap.L(),
clientConstructor: new(clientConstructorWrapper),
}
}
// New creates, initializes and returns utility serving
// Object.Get service requests.
func New(opts ...Option) *Service {
c := defaultCfg()
for i := range opts {
opts[i](c)
}
return &Service{
cfg: c,
}
}
// WithLogger returns option to specify Get service's logger.
func WithLogger(l *logger.Logger) Option {
return func(c *cfg) {
c.log = l.With(zap.String("component", "Object.Get service"))
}
}
// WithLocalStorageEngine returns option to set local storage
// instance.
func WithLocalStorageEngine(e *engine.StorageEngine) Option {
return func(c *cfg) {
c.localStorage = (*storageEngineWrapper)(e)
}
}
// WithClientConstructor returns option to set constructor of remote node clients.
func WithClientConstructor(v ClientConstructor) Option {
return func(c *cfg) {
c.clientConstructor.(*clientConstructorWrapper).constructor = v
}
}
// WithTraverserGenerator returns option to set generator of
// placement traverser to get the objects from containers.
func WithTraverserGenerator(t *util.TraverserGenerator) Option {
return func(c *cfg) {
c.traverserGenerator = (*traverseGeneratorWrapper)(t)
}
}
// WithNetMapSource returns option to set network
// map storage to receive current network state.
func WithNetMapSource(nmSrc netmap.Source) Option {
return func(c *cfg) {
c.currentEpochReceiver = &nmSrcWrapper{
nmSrc: nmSrc,
}
}
}