storj/pkg/transport/transport.go
2018-11-19 16:40:01 +02:00

77 lines
2.1 KiB
Go

// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.
package transport
import (
"context"
"github.com/zeebo/errs"
"google.golang.org/grpc"
"gopkg.in/spacemonkeygo/monkit.v2"
"storj.io/storj/pkg/pb"
"storj.io/storj/pkg/provider"
)
var (
mon = monkit.Package()
//Error is the errs class of standard Transport Client errors
Error = errs.Class("transport error")
)
// Client defines the interface to an transport client.
type Client interface {
DialNode(ctx context.Context, node *pb.Node, opts ...grpc.DialOption) (*grpc.ClientConn, error)
DialAddress(ctx context.Context, address string, opts ...grpc.DialOption) (*grpc.ClientConn, error)
Identity() *provider.FullIdentity
}
// Transport interface structure
type Transport struct {
identity *provider.FullIdentity
}
// NewClient returns a newly instantiated Transport Client
func NewClient(identity *provider.FullIdentity) Client {
return &Transport{identity: identity}
}
// DialNode returns a grpc connection with tls to a node
func (transport *Transport) DialNode(ctx context.Context, node *pb.Node, opts ...grpc.DialOption) (conn *grpc.ClientConn, err error) {
defer mon.Task()(&ctx)(&err)
if node.Address == nil || node.Address.Address == "" {
return nil, Error.New("no address")
}
// add ID of node we are wanting to connect to
dialOpt, err := transport.identity.DialOption(node.GetId())
if err != nil {
return nil, err
}
options := append([]grpc.DialOption{dialOpt}, opts...)
return grpc.Dial(node.GetAddress().Address, options...)
}
// DialAddress returns a grpc connection with tls to an IP address
func (transport *Transport) DialAddress(ctx context.Context, address string, opts ...grpc.DialOption) (conn *grpc.ClientConn, err error) {
defer mon.Task()(&ctx)(&err)
dialOpt, err := transport.identity.DialOption("")
if err != nil {
return nil, err
}
options := append([]grpc.DialOption{dialOpt}, opts...)
return grpc.Dial(address, options...)
}
// Identity is a getter for the transport's identity
func (transport *Transport) Identity() *provider.FullIdentity {
return transport.identity
}
// Close implements io.closer, closing the transport connection(s)