forked from TrueCloudLab/frostfs-node
78 lines
2 KiB
Go
78 lines
2 KiB
Go
package implementations
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import (
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"context"
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"github.com/multiformats/go-multiaddr"
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"github.com/nspcc-dev/neofs-api-go/query"
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"github.com/nspcc-dev/neofs-api-go/refs"
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"github.com/nspcc-dev/neofs-api-go/service"
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"github.com/nspcc-dev/neofs-node/lib/replication"
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"github.com/nspcc-dev/neofs-node/lib/transport"
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"github.com/pkg/errors"
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"go.uber.org/zap"
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)
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type (
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locator struct {
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executor SelectiveContainerExecutor
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log *zap.Logger
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}
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// LocatorParams groups the parameters of ObjectLocator constructor.
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LocatorParams struct {
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SelectiveContainerExecutor SelectiveContainerExecutor
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Logger *zap.Logger
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}
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)
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const locatorInstanceFailMsg = "could not create object locator"
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var errEmptyObjectsContainerHandler = errors.New("empty container objects container handler")
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func (s *locator) LocateObject(ctx context.Context, addr Address) (res []multiaddr.Multiaddr, err error) {
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queryBytes, err := (&query.Query{
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Filters: []query.Filter{
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{
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Type: query.Filter_Exact,
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Name: transport.KeyID,
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Value: addr.ObjectID.String(),
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},
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},
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}).Marshal()
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if err != nil {
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return nil, errors.Wrap(err, "locate object failed on query marshal")
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}
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err = s.executor.Search(ctx, &SearchParams{
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SelectiveParams: SelectiveParams{
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CID: addr.CID,
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TTL: service.NonForwardingTTL,
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IDList: make([]ObjectID, 1),
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},
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SearchCID: addr.CID,
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SearchQuery: queryBytes,
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Handler: func(node multiaddr.Multiaddr, addrList []refs.Address) {
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if len(addrList) > 0 {
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res = append(res, node)
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}
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},
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})
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return
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}
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// NewObjectLocator constructs replication.ObjectLocator from SelectiveContainerExecutor.
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func NewObjectLocator(p LocatorParams) (replication.ObjectLocator, error) {
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switch {
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case p.SelectiveContainerExecutor == nil:
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return nil, errors.Wrap(errEmptyObjectsContainerHandler, locatorInstanceFailMsg)
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case p.Logger == nil:
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return nil, errors.Wrap(errEmptyLogger, locatorInstanceFailMsg)
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}
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return &locator{
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executor: p.SelectiveContainerExecutor,
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log: p.Logger,
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}, nil
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}
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