frostfs-node/pkg/services/object/get/prm.go
Leonard Lyubich 36088949fc [#431] services/object: Re-sign original read requests during forwarding
In previous implementation node's Object Get/Head/GetRange V2 service
handlers created a new request for each RPC. Now original requests are
re-signed according to API specification. Logical handler abstracts from
this version-dependent logic through `RequestForwarder` callback.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2021-05-04 13:56:55 +03:00

116 lines
2.5 KiB
Go

package getsvc
import (
"hash"
"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/services/object/util"
)
// Prm groups parameters of Get service call.
type Prm struct {
commonPrm
}
// RangePrm groups parameters of GetRange service call.
type RangePrm struct {
commonPrm
rng *objectSDK.Range
}
// RangeHashPrm groups parameters of GetRange service call.
type RangeHashPrm struct {
commonPrm
hashGen func() hash.Hash
rngs []*objectSDK.Range
salt []byte
}
type RequestForwarder func(client.Client) (*objectSDK.Object, error)
// HeadPrm groups parameters of Head service call.
type HeadPrm struct {
commonPrm
}
type commonPrm struct {
objWriter ObjectWriter
common *util.CommonPrm
client.GetObjectParams
forwarder RequestForwarder
}
// ChunkWriter is an interface of target component
// to write payload chunk.
type ChunkWriter interface {
WriteChunk([]byte) error
}
// HeaderWriter is an interface of target component
// to write object header.
type HeaderWriter interface {
WriteHeader(*object.Object) error
}
// ObjectWriter is an interface of target component to write object.
type ObjectWriter interface {
HeaderWriter
ChunkWriter
}
// SetObjectWriter sets target component to write the object.
func (p *Prm) SetObjectWriter(w ObjectWriter) {
p.objWriter = w
}
// SetChunkWriter sets target component to write the object payload range.
func (p *RangePrm) SetChunkWriter(w ChunkWriter) {
p.objWriter = &partWriter{
chunkWriter: w,
}
}
// SetRange sets range of the requested payload data.
func (p *RangePrm) SetRange(rng *objectSDK.Range) {
p.rng = rng
}
// SetRangeList sets list of object payload ranges.
func (p *RangeHashPrm) SetRangeList(rngs []*objectSDK.Range) {
p.rngs = rngs
}
// SetHashGenerator sets constructor of hashing algorithm.
func (p *RangeHashPrm) SetHashGenerator(v func() hash.Hash) {
p.hashGen = v
}
// SetSalt sets binary salt to XOR object's payload ranges before hash calculation.
func (p *RangeHashPrm) SetSalt(salt []byte) {
p.salt = salt
}
// SetCommonParameters sets common parameters of the operation.
func (p *commonPrm) SetCommonParameters(common *util.CommonPrm) {
p.common = common
}
func (p *commonPrm) SetRequestForwarder(f RequestForwarder) {
p.forwarder = f
}
// SetHeaderWriter sets target component to write the object header.
func (p *HeadPrm) SetHeaderWriter(w HeaderWriter) {
p.objWriter = &partWriter{
headWriter: w,
}
}