[#159] Add object context to session tokens

Signed-off-by: Denis Kirillov <denis@nspcc.ru>

pool/pool.go

@@ -15,6 +15,7 @@ import (
 	"time"
 
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	sessionv2 "github.com/nspcc-dev/neofs-api-go/v2/session"
 	"github.com/nspcc-dev/neofs-sdk-go/accounting"
 	"github.com/nspcc-dev/neofs-sdk-go/client"
 	"github.com/nspcc-dev/neofs-sdk-go/container"
@@ -182,6 +183,8 @@ type CallOption func(config *callConfig)
 
 type callConfig struct {
 	useDefaultSession bool
+	verb              sessionv2.ObjectSessionVerb
+	addr              *address.Address
 
 	key    *ecdsa.PrivateKey
 	btoken *token.BearerToken
@@ -212,6 +215,18 @@ func useDefaultSession() CallOption {
 	}
 }
 
+func useAddress(addr *address.Address) CallOption {
+	return func(config *callConfig) {
+		config.addr = addr
+	}
+}
+
+func useVerb(verb sessionv2.ObjectSessionVerb) CallOption {
+	return func(config *callConfig) {
+		config.verb = verb
+	}
+}
+
 func cfgFromOpts(opts ...CallOption) *callConfig {
 	var cfg = new(callConfig)
 	for _, opt := range opts {
@@ -283,12 +298,8 @@ func newPool(ctx context.Context, options *BuilderOptions) (Pool, error) {
 			} else if err == nil {
 				healthy, atLeastOneHealthy = true, true
 				st := sessionTokenForOwner(ownerID, cliRes)
-
-				// sign the session token and cache it on success
-				if err = st.Sign(options.Key); err == nil {
 				_ = cache.Put(formCacheKey(addr, options.Key), st)
 			}
-			}
 			clientPacks[j] = &clientPack{client: c, healthy: healthy, address: addr}
 		}
 		source := rand.NewSource(time.Now().UnixNano())
@@ -580,6 +591,7 @@ type callContext struct {
 	// flag to open default session if session token is missing
 	sessionDefault bool
 	sessionTarget  func(session.Token)
+	sessionContext *session.ObjectContext
 }
 
 func (p *pool) initCallContext(ctx *callContext, cfg *callConfig) error {
@@ -603,6 +615,11 @@ func (p *pool) initCallContext(ctx *callContext, cfg *callConfig) error {
 
 	// note that we don't override session provided by the caller
 	ctx.sessionDefault = cfg.stoken == nil && cfg.useDefaultSession
+	if ctx.sessionDefault {
+		ctx.sessionContext = session.NewObjectContext()
+		ctx.sessionContext.ToV2().SetVerb(cfg.verb)
+		ctx.sessionContext.ApplyTo(cfg.addr)
+	}
 
 	return err
 }
@@ -631,12 +648,7 @@ func (p *pool) openDefaultSession(ctx *callContext) error {
 	cacheKey := formCacheKey(ctx.endpoint, ctx.key)
 
 	tok := p.cache.Get(cacheKey)
-	if tok != nil {
+	if tok == nil {
-		// use cached token
-		ctx.sessionTarget(*tok)
-		return nil
-	}
-
 		// open new session
 		cliRes, err := createSessionTokenForDuration(ctx, ctx.client, p.stokenDuration)
 		if err != nil {
@@ -644,17 +656,19 @@ func (p *pool) openDefaultSession(ctx *callContext) error {
 		}
 
 		tok = sessionTokenForOwner(owner.NewIDFromPublicKey(&ctx.key.PublicKey), cliRes)
+		// cache the opened session
+		p.cache.Put(cacheKey, tok)
+	}
+
+	tokToSign := *tok
+	tokToSign.SetContext(ctx.sessionContext)
 
 	// sign the token
-	err = tok.Sign(ctx.key)
+	if err := tokToSign.Sign(ctx.key); err != nil {
-	if err != nil {
 		return fmt.Errorf("sign token of the opened session: %w", err)
 	}
 
-	// cache the opened session
+	ctx.sessionTarget(tokToSign)
-	p.cache.Put(cacheKey, tok)
-
-	ctx.sessionTarget(*tok)
 
 	return nil
 }
@@ -685,7 +699,10 @@ func (p *pool) callWithRetry(ctx *callContextWithRetry, f func() error) error {
 }
 
 func (p *pool) PutObject(ctx context.Context, hdr object.Object, payload io.Reader, opts ...CallOption) (*oid.ID, error) {
-	cfg := cfgFromOpts(append(opts, useDefaultSession())...)
+	cfg := cfgFromOpts(append(opts,
+		useDefaultSession(),
+		useVerb(sessionv2.ObjectVerbPut),
+		useAddress(newAddressFromCnrID(hdr.ContainerID())))...)
 
 	// Put object is different from other object service methods. Put request
 	// can't be resent in case of session token failures (i.e. session token is
@@ -791,7 +808,10 @@ func (p *pool) PutObject(ctx context.Context, hdr object.Object, payload io.Read
 }
 
 func (p *pool) DeleteObject(ctx context.Context, addr address.Address, opts ...CallOption) error {
-	cfg := cfgFromOpts(append(opts, useDefaultSession())...)
+	cfg := cfgFromOpts(append(opts,
+		useDefaultSession(),
+		useVerb(sessionv2.ObjectVerbDelete),
+		useAddress(&addr))...)
 
 	var prm client.PrmObjectDelete
 
@@ -843,7 +863,10 @@ type ResGetObject struct {
 }
 
 func (p *pool) GetObject(ctx context.Context, addr address.Address, opts ...CallOption) (*ResGetObject, error) {
-	cfg := cfgFromOpts(append(opts, useDefaultSession())...)
+	cfg := cfgFromOpts(append(opts,
+		useDefaultSession(),
+		useVerb(sessionv2.ObjectVerbGet),
+		useAddress(&addr))...)
 
 	var prm client.PrmObjectGet
 
@@ -892,7 +915,10 @@ func (p *pool) GetObject(ctx context.Context, addr address.Address, opts ...Call
 }
 
 func (p *pool) HeadObject(ctx context.Context, addr address.Address, opts ...CallOption) (*object.Object, error) {
-	cfg := cfgFromOpts(append(opts, useDefaultSession())...)
+	cfg := cfgFromOpts(append(opts,
+		useDefaultSession(),
+		useVerb(sessionv2.ObjectVerbHead),
+		useAddress(&addr))...)
 
 	var prm client.PrmObjectHead
 
@@ -951,7 +977,10 @@ func (x *ResObjectRange) Close() error {
 }
 
 func (p *pool) ObjectRange(ctx context.Context, addr address.Address, off, ln uint64, opts ...CallOption) (*ResObjectRange, error) {
-	cfg := cfgFromOpts(append(opts, useDefaultSession())...)
+	cfg := cfgFromOpts(append(opts,
+		useDefaultSession(),
+		useVerb(sessionv2.ObjectVerbRange),
+		useAddress(&addr))...)
 
 	var prm client.PrmObjectRange
 
@@ -1024,7 +1053,10 @@ func (x *ResObjectSearch) Close() {
 }
 
 func (p *pool) SearchObjects(ctx context.Context, idCnr cid.ID, filters object.SearchFilters, opts ...CallOption) (*ResObjectSearch, error) {
-	cfg := cfgFromOpts(append(opts, useDefaultSession())...)
+	cfg := cfgFromOpts(append(opts,
+		useDefaultSession(),
+		useVerb(sessionv2.ObjectVerbSearch),
+		useAddress(newAddressFromCnrID(&idCnr)))...)
 
 	var prm client.PrmObjectSearch
 
@@ -1265,3 +1297,9 @@ func sessionTokenForOwner(id *owner.ID, cliRes *client.ResSessionCreate) *sessio
 
 	return st
 }
+
+func newAddressFromCnrID(cnrID *cid.ID) *address.Address {
+	addr := address.NewAddress()
+	addr.SetContainerID(cnrID)
+	return addr
+}