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

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package searchsvc
import (
"context"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"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 searches objects on the specified node.
// MUST NOT modify execCtx as it can be accessed concurrently.
searchObjects(context.Context, *execCtx, client.NodeInfo) ([]oid.ID, error)
}
type ClientConstructor interface {
Get(client.NodeInfo) (client.MultiAddressClient, error)
}
type cfg struct {
log *logger.Logger
localStorage interface {
search(context.Context, *execCtx) ([]oid.ID, error)
}
clientConstructor interface {
get(client.NodeInfo) (searchClient, error)
}
traverserGenerator interface {
GenerateTraverser(cid.ID, *oid.ID, uint64) (*placement.Traverser, error)
}
currentEpochReceiver interface {
Epoch() (uint64, error)
}
keyStore *util.KeyStorage
}
// New creates, initializes and returns utility serving
// Object.Get service requests.
func New(e *engine.StorageEngine,
cc ClientConstructor,
tg *util.TraverserGenerator,
ns netmap.Source,
ks *util.KeyStorage,
opts ...Option,
) *Service {
c := &cfg{
log: &logger.Logger{Logger: zap.L()},
clientConstructor: &clientConstructorWrapper{
constructor: cc,
},
localStorage: &storageEngineWrapper{
storage: e,
},
traverserGenerator: tg,
currentEpochReceiver: ns,
keyStore: ks,
}
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 = &logger.Logger{Logger: l.With(zap.String("component", "Object.Search service"))}
}
}