R.B. Boyer af04851637
peering: move peer replication to the external gRPC port (#13698)
Peer replication is intended to be between separate Consul installs and
effectively should be considered "external". This PR moves the peer
stream replication bidirectional RPC endpoint to the external gRPC
server and ensures that things continue to function.
2022-07-08 12:01:13 -05:00

102 lines
3.8 KiB
Go

package peerstream
import (
"github.com/hashicorp/go-hclog"
"github.com/hashicorp/go-memdb"
"google.golang.org/grpc"
"github.com/hashicorp/consul/acl"
"github.com/hashicorp/consul/acl/resolver"
"github.com/hashicorp/consul/agent/consul/state"
"github.com/hashicorp/consul/agent/consul/stream"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/proto/pbpeering"
"github.com/hashicorp/consul/proto/pbpeerstream"
)
// TODO(peering): fix up these interfaces to be more testable now that they are
// extracted from private peering
type Server struct {
Config
}
type Config struct {
Backend Backend
Tracker *Tracker
GetStore func() StateStore
Logger hclog.Logger
ACLResolver ACLResolver
// Datacenter of the Consul server this gRPC server is hosted on
Datacenter string
ConnectEnabled bool
}
//go:generate mockery --name ACLResolver --inpackage
type ACLResolver interface {
ResolveTokenAndDefaultMeta(string, *acl.EnterpriseMeta, *acl.AuthorizerContext) (resolver.Result, error)
}
func NewServer(cfg Config) *Server {
requireNotNil(cfg.Backend, "Backend")
requireNotNil(cfg.Tracker, "Tracker")
requireNotNil(cfg.GetStore, "GetStore")
requireNotNil(cfg.Logger, "Logger")
// requireNotNil(cfg.ACLResolver, "ACLResolver") // TODO(peering): reenable check when ACLs are required
if cfg.Datacenter == "" {
panic("Datacenter is required")
}
return &Server{
Config: cfg,
}
}
func requireNotNil(v interface{}, name string) {
if v == nil {
panic(name + " is required")
}
}
var _ pbpeerstream.PeerStreamServiceServer = (*Server)(nil)
func (s *Server) Register(grpcServer *grpc.Server) {
pbpeerstream.RegisterPeerStreamServiceServer(grpcServer, s)
}
type Backend interface {
Subscribe(req *stream.SubscribeRequest) (*stream.Subscription, error)
// IsLeader indicates whether the consul server is in a leader state or not.
IsLeader() bool
// SetLeaderAddress is called on a raft.LeaderObservation in a go routine
// in the consul server; see trackLeaderChanges()
SetLeaderAddress(string)
// GetLeaderAddress provides the best hint for the current address of the
// leader. There is no guarantee that this is the actual address of the
// leader.
GetLeaderAddress() string
PeeringTerminateByID(req *pbpeering.PeeringTerminateByIDRequest) error
PeeringTrustBundleWrite(req *pbpeering.PeeringTrustBundleWriteRequest) error
CatalogRegister(req *structs.RegisterRequest) error
CatalogDeregister(req *structs.DeregisterRequest) error
}
// StateStore provides a read-only interface for querying Peering data.
type StateStore interface {
PeeringRead(ws memdb.WatchSet, q state.Query) (uint64, *pbpeering.Peering, error)
PeeringReadByID(ws memdb.WatchSet, id string) (uint64, *pbpeering.Peering, error)
PeeringList(ws memdb.WatchSet, entMeta acl.EnterpriseMeta) (uint64, []*pbpeering.Peering, error)
PeeringTrustBundleRead(ws memdb.WatchSet, q state.Query) (uint64, *pbpeering.PeeringTrustBundle, error)
PeeringTrustBundleList(ws memdb.WatchSet, entMeta acl.EnterpriseMeta) (uint64, []*pbpeering.PeeringTrustBundle, error)
ExportedServicesForPeer(ws memdb.WatchSet, peerID, dc string) (uint64, *structs.ExportedServiceList, error)
ServiceDump(ws memdb.WatchSet, kind structs.ServiceKind, useKind bool, entMeta *acl.EnterpriseMeta, peerName string) (uint64, structs.CheckServiceNodes, error)
CheckServiceNodes(ws memdb.WatchSet, serviceName string, entMeta *acl.EnterpriseMeta, peerName string) (uint64, structs.CheckServiceNodes, error)
NodeServices(ws memdb.WatchSet, nodeNameOrID string, entMeta *acl.EnterpriseMeta, peerName string) (uint64, *structs.NodeServices, error)
CAConfig(ws memdb.WatchSet) (uint64, *structs.CAConfiguration, error)
TrustBundleListByService(ws memdb.WatchSet, service, dc string, entMeta acl.EnterpriseMeta) (uint64, []*pbpeering.PeeringTrustBundle, error)
AbandonCh() <-chan struct{}
}