frostfs-node/pkg/services/object/head/remote.go
Leonard Lyubich a51211eda7 [#291] Remove unused code from pkg/services/object/head
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2020-12-30 10:27:53 +03:00

96 lines
2.5 KiB
Go

package headsvc
import (
"context"
"github.com/nspcc-dev/neofs-api-go/pkg/client"
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
"github.com/nspcc-dev/neofs-node/pkg/network"
"github.com/nspcc-dev/neofs-node/pkg/network/cache"
"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
"github.com/pkg/errors"
)
// RemoteHeader represents utility for getting
// the object header from a remote host.
type RemoteHeader struct {
keyStorage *util.KeyStorage
clientCache *cache.ClientCache
clientOpts []client.Option
}
// RemoteHeadPrm groups remote header operation parameters.
type RemoteHeadPrm struct {
commonHeadPrm *Prm
node *network.Address
}
var ErrNotFound = errors.New("object header not found")
// NewRemoteHeader creates, initializes and returns new RemoteHeader instance.
func NewRemoteHeader(keyStorage *util.KeyStorage, cache *cache.ClientCache, opts ...client.Option) *RemoteHeader {
return &RemoteHeader{
keyStorage: keyStorage,
clientCache: cache,
clientOpts: opts,
}
}
// WithNodeAddress sets network address of the remote node.
func (p *RemoteHeadPrm) WithNodeAddress(v *network.Address) *RemoteHeadPrm {
if p != nil {
p.node = v
}
return p
}
// WithObjectAddress sets object address.
func (p *RemoteHeadPrm) WithObjectAddress(v *objectSDK.Address) *RemoteHeadPrm {
if p != nil {
p.commonHeadPrm = new(Prm).WithAddress(v)
}
return p
}
// Head requests object header from the remote node.
func (h *RemoteHeader) Head(ctx context.Context, prm *RemoteHeadPrm) (*object.Object, error) {
key, err := h.keyStorage.GetKey(prm.commonHeadPrm.common.SessionToken())
if err != nil {
return nil, errors.Wrapf(err, "(%T) could not receive private key", h)
}
addr, err := prm.node.IPAddrString()
if err != nil {
return nil, err
}
c, err := h.clientCache.Get(key, addr, h.clientOpts...)
if err != nil {
return nil, errors.Wrapf(err, "(%T) could not create SDK client %s", h, addr)
}
p := new(client.ObjectHeaderParams).
WithAddress(prm.commonHeadPrm.addr).
WithRawFlag(prm.commonHeadPrm.raw)
if prm.commonHeadPrm.short {
p = p.WithMainFields()
}
hdr, err := c.GetObjectHeader(ctx, p,
client.WithTTL(1), // FIXME: use constant
client.WithSession(prm.commonHeadPrm.common.SessionToken()),
client.WithBearer(prm.commonHeadPrm.common.BearerToken()),
)
if err != nil {
return nil, errors.Wrapf(err, "(%T) could not head object in %s", h, addr)
}
return object.NewFromSDK(hdr), nil
}