frostfs-node/pkg/innerring/rpc.go
Leonard Lyubich 106884fc40 [#428] client: Hide client cache behind interface in dependent packages
Replace usage of `cache.ClientCache` type with interface with similar
signature. This will further allow overloading clients without affecting the
logic of dependent packages.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2021-03-24 10:11:52 +03:00

199 lines
5.4 KiB
Go

package innerring
import (
"context"
"crypto/ecdsa"
"fmt"
"time"
"github.com/nspcc-dev/neofs-api-go/pkg/client"
"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
"github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-api-go/pkg/storagegroup"
coreObject "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/audit"
"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
"go.uber.org/zap"
)
type (
ClientCache struct {
log *zap.Logger
cache interface {
Get(string) (client.Client, error)
}
key *ecdsa.PrivateKey
sgTimeout, headTimeout, rangeTimeout time.Duration
}
clientCacheParams struct {
Log *zap.Logger
Key *ecdsa.PrivateKey
SGTimeout, HeadTimeout, RangeTimeout time.Duration
}
)
func newClientCache(p *clientCacheParams) *ClientCache {
return &ClientCache{
log: p.Log,
cache: cache.NewSDKClientCache(),
key: p.Key,
sgTimeout: p.SGTimeout,
headTimeout: p.HeadTimeout,
rangeTimeout: p.RangeTimeout,
}
}
func (c *ClientCache) Get(address string) (client.Client, error) {
// Because cache is used by `ClientCache` exclusively,
// client will always have valid key.
return c.cache.Get(address)
}
// GetSG polls the container from audit task to get the object by id.
// Returns storage groups structure from received object.
func (c *ClientCache) GetSG(task *audit.Task, id *object.ID) (*storagegroup.StorageGroup, error) {
sgAddress := new(object.Address)
sgAddress.SetContainerID(task.ContainerID())
sgAddress.SetObjectID(id)
return c.getSG(task.AuditContext(), sgAddress, task.NetworkMap(), task.ContainerNodes())
}
func (c *ClientCache) getSG(ctx context.Context, addr *object.Address, nm *netmap.Netmap, cn netmap.ContainerNodes) (*storagegroup.StorageGroup, error) {
nodes, err := placement.BuildObjectPlacement(nm, cn, addr.ObjectID())
if err != nil {
return nil, fmt.Errorf("can't build object placement: %w", err)
}
getParams := new(client.GetObjectParams)
getParams.WithAddress(addr)
for _, node := range placement.FlattenNodes(nodes) {
addr, err := network.IPAddrFromMultiaddr(node.Address())
if err != nil {
c.log.Warn("can't parse remote address",
zap.String("address", node.Address()),
zap.String("error", err.Error()))
continue
}
cli, err := c.Get(addr)
if err != nil {
c.log.Warn("can't setup remote connection",
zap.String("address", addr),
zap.String("error", err.Error()))
continue
}
cctx, cancel := context.WithTimeout(ctx, c.sgTimeout)
obj, err := cli.GetObject(cctx, getParams, client.WithKey(c.key))
cancel()
if err != nil {
c.log.Warn("can't get storage group object",
zap.String("error", err.Error()))
continue
}
sg := storagegroup.New()
err = sg.Unmarshal(obj.Payload())
if err != nil {
return nil, fmt.Errorf("can't parse storage group payload: %w", err)
}
return sg, nil
}
return nil, coreObject.ErrNotFound
}
// GetHeader requests node from the container under audit to return object header by id.
func (c *ClientCache) GetHeader(task *audit.Task, node *netmap.Node, id *object.ID, relay bool) (*object.Object, error) {
raw := true
ttl := uint32(1)
if relay {
ttl = 10 // todo: instead of hardcode value we can set TTL based on container length
raw = false
}
objAddress := new(object.Address)
objAddress.SetContainerID(task.ContainerID())
objAddress.SetObjectID(id)
headParams := new(client.ObjectHeaderParams)
headParams.WithRawFlag(raw)
headParams.WithMainFields()
headParams.WithAddress(objAddress)
addr, err := network.IPAddrFromMultiaddr(node.Address())
if err != nil {
return nil, fmt.Errorf("can't parse remote address %s: %w", node.Address(), err)
}
cli, err := c.Get(addr)
if err != nil {
return nil, fmt.Errorf("can't setup remote connection with %s: %w", addr, err)
}
cctx, cancel := context.WithTimeout(task.AuditContext(), c.headTimeout)
head, err := cli.GetObjectHeader(cctx, headParams,
client.WithTTL(ttl),
client.WithKey(c.key))
cancel()
if err != nil {
return nil, fmt.Errorf("object head error: %w", err)
}
return head, nil
}
// GetRangeHash requests node from the container under audit to return Tillich-Zemor hash of the
// payload range of the object with specified identifier.
func (c *ClientCache) GetRangeHash(task *audit.Task, node *netmap.Node, id *object.ID, rng *object.Range) ([]byte, error) {
objAddress := new(object.Address)
objAddress.SetContainerID(task.ContainerID())
objAddress.SetObjectID(id)
rangeParams := new(client.RangeChecksumParams)
rangeParams.WithAddress(objAddress)
rangeParams.WithRangeList(rng)
rangeParams.WithSalt(nil) // it MUST be nil for correct hash concatenation in PDP game
addr, err := network.IPAddrFromMultiaddr(node.Address())
if err != nil {
return nil, fmt.Errorf("can't parse remote address %s: %w", node.Address(), err)
}
cli, err := c.Get(addr)
if err != nil {
return nil, fmt.Errorf("can't setup remote connection with %s: %w", addr, err)
}
cctx, cancel := context.WithTimeout(task.AuditContext(), c.rangeTimeout)
result, err := cli.ObjectPayloadRangeTZ(cctx, rangeParams,
client.WithTTL(1),
client.WithKey(c.key))
cancel()
if err != nil {
return nil, fmt.Errorf("object rangehash error: %w", err)
}
// client guarantees that request and response have equal amount of ranges
return result[0][:], nil
}