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