frostfs-api-go/pkg/client/session.go
Evgenii Stratonikov ae2fb263f1 [#266] pkg/client: Export Client interface instead of structure
Make it easier to test API clients and mock specific methods.
Also add comments on exported methods.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2021-03-17 13:43:22 +03:00

142 lines
3.9 KiB
Go

package client
import (
"context"
"github.com/nspcc-dev/neofs-api-go/pkg/owner"
"github.com/nspcc-dev/neofs-api-go/pkg/token"
"github.com/nspcc-dev/neofs-api-go/v2/client"
v2session "github.com/nspcc-dev/neofs-api-go/v2/session"
v2signature "github.com/nspcc-dev/neofs-api-go/v2/signature"
"github.com/pkg/errors"
)
// Session contains session-related methods.
type Session interface {
// CreateSession creates session using provided expiration time.
CreateSession(context.Context, uint64, ...CallOption) (*token.SessionToken, error)
// AttachSessionToken attaches session token to be used by default for following requests.
AttachSessionToken(*token.SessionToken)
// AttachBearerToken attaches bearer token to be used by default for following requests.
AttachBearerToken(*token.BearerToken)
}
var errMalformedResponseBody = errors.New("malformed response body")
func (c clientImpl) CreateSession(ctx context.Context, expiration uint64, opts ...CallOption) (*token.SessionToken, error) {
switch c.remoteNode.Version.Major() {
case 2:
return c.createSessionV2(ctx, expiration, opts...)
default:
return nil, errUnsupportedProtocol
}
}
func (c clientImpl) createSessionV2(ctx context.Context, expiration uint64, opts ...CallOption) (*token.SessionToken, error) {
// apply all available options
callOptions := c.defaultCallOptions()
for i := range opts {
opts[i].apply(&callOptions)
}
w, err := owner.NEO3WalletFromPublicKey(&callOptions.key.PublicKey)
if err != nil {
return nil, err
}
ownerID := new(owner.ID)
ownerID.SetNeo3Wallet(w)
reqBody := new(v2session.CreateRequestBody)
reqBody.SetOwnerID(ownerID.ToV2())
reqBody.SetExpiration(expiration)
req := new(v2session.CreateRequest)
req.SetBody(reqBody)
req.SetMetaHeader(v2MetaHeaderFromOpts(callOptions))
err = v2signature.SignServiceMessage(callOptions.key, req)
if err != nil {
return nil, err
}
switch c.remoteNode.Protocol {
case GRPC:
cli, err := v2SessionClientFromOptions(c.opts)
if err != nil {
return nil, errors.Wrap(err, "can't create grpc client")
}
resp, err := cli.Create(ctx, req)
if err != nil {
return nil, errors.Wrap(err, "transport error")
}
err = v2signature.VerifyServiceMessage(resp)
if err != nil {
return nil, errors.Wrap(err, "can't verify response message")
}
body := resp.GetBody()
if body == nil {
return nil, errMalformedResponseBody
}
sessionToken := token.NewSessionToken()
sessionToken.SetID(body.GetID())
sessionToken.SetSessionKey(body.GetSessionKey())
sessionToken.SetOwnerID(ownerID)
return sessionToken, nil
default:
return nil, errUnsupportedProtocol
}
}
func v2SessionClientFromOptions(opts *clientOptions) (cli *v2session.Client, err error) {
switch {
case opts.grpcOpts.v2SessionClient != nil:
// return value from client cache
return opts.grpcOpts.v2SessionClient, nil
case opts.grpcOpts.conn != nil:
cli, err = v2session.NewClient(v2session.WithGlobalOpts(
client.WithGRPCConn(opts.grpcOpts.conn)),
)
case opts.addr != "":
cli, err = v2session.NewClient(v2session.WithGlobalOpts(
client.WithNetworkAddress(opts.addr),
client.WithDialTimeout(opts.dialTimeout),
))
default:
return nil, errOptionsLack("Session")
}
// check if client correct and save in cache
if err != nil {
return nil, err
}
opts.grpcOpts.v2SessionClient = cli
return cli, nil
}
// AttachSessionToken attaches session token to client.
//
// Provided token is attached to all requests without WithSession option.
// Use WithSession(nil) option in order to send request without session token.
func (c *clientImpl) AttachSessionToken(token *token.SessionToken) {
c.sessionToken = token
}
// AttachBearerToken attaches bearer token to client.
//
// Provided bearer is attached to all requests without WithBearer option.
// Use WithBearer(nil) option in order to send request without bearer token.
func (c *clientImpl) AttachBearerToken(token *token.BearerToken) {
c.bearerToken = token
}