kaspad/netadapter/server/grpcserver/grpc_connection.go
Svarog b42b8b16fd
[NOD-1120] Connection Manager (#796)
* [NOD-1120] Removed closure in NetAdapter.onConnectedHanlder

* [NOD-1120] Implement all connection manager methods

* [NOD-1120] Integrated connmanager into kaspad + added call for dnsseeder

* [NOD-1120] Allow buffer to not be bytes.Buffer

* [NOD-1120] Added timeout to connect

* [NOD-1120] Don't enter connections to  add loop if none needed

* [NOD-1120] Add call for addressManager.Good

* [NOD-1120] Minor bug fixes

* [NOD-1120] Remove errChan from grpcConnection

* [NOD-1120] Add comments to exported methods

* [NOD-1120] cancel the context for DialContext in gRPCServer.Connect

* [NOD-1120] Don't try to remove from connSet a connection that doesn't exist

* [NOD-1120] add ok bool to connectionSet.get

* [NOD-1120] Remove overuse of if-else in checkConnectionRequests

* [NOD-1120] Made some order in ConnectionManager

* [NOD-1120] Moved checkIncomingConnections to it's own file

* [NOD-1120] cleanup in checkOutgoingConnections

* [NOD-1120] Cleanup in SeedDNS, and move call outside of connection manager

* [NOD-1120] Add check that both --connect and --addpeer aren't used

* [NOD-1120] Move dial timeout to constant

* [NOD-1120] Enhance comment

* [NOD-1120] Log connection failure out of initiateConnection

* [NOD-1148] Reshuffle checkRequestedConnections to make more sense

* [NOD-1120] Move continue to correct place + reshuffle logging code

* [NOD-1120] Don't expose server.Connection outside netAdapter - expose a wrapper instead

* [NOD-1120] Add comments

* [NOD-1120] Don't return the connection from netAdapter.Connect()

* [NOD-1120] Use .Address as key for connectionSet

* [NOD-1120] Fix minRetryDuration usage

* [NOD-1120] Remove the correct number of incoming connections

* [NOD-1120] Add comment

* [NOD-1120] Rename connSet -> incomingConnectionSet

* [NOD-1120] fix grammar
2020-07-16 17:15:58 +03:00

89 lines
2.0 KiB
Go

package grpcserver
import (
"net"
"sync/atomic"
"github.com/kaspanet/kaspad/netadapter/router"
"github.com/kaspanet/kaspad/netadapter/server/grpcserver/protowire"
"github.com/kaspanet/kaspad/netadapter/server"
"google.golang.org/grpc"
)
type gRPCConnection struct {
server *gRPCServer
address net.Addr
isOutbound bool
stream grpcStream
router *router.Router
stopChan chan struct{}
clientConn grpc.ClientConn
onDisconnectedHandler server.OnDisconnectedHandler
isConnected uint32
}
func newConnection(server *gRPCServer, address net.Addr, isOutbound bool, stream grpcStream) *gRPCConnection {
connection := &gRPCConnection{
server: server,
address: address,
isOutbound: isOutbound,
stream: stream,
stopChan: make(chan struct{}),
isConnected: 1,
}
return connection
}
func (c *gRPCConnection) Start(router *router.Router) {
c.router = router
spawn(func() {
err := c.connectionLoops()
if err != nil {
log.Errorf("error from connectionLoops for %s: %+v", c.address, err)
}
})
}
func (c *gRPCConnection) String() string {
return c.Address().String()
}
func (c *gRPCConnection) IsConnected() bool {
return atomic.LoadUint32(&c.isConnected) != 0
}
func (c *gRPCConnection) SetOnDisconnectedHandler(onDisconnectedHandler server.OnDisconnectedHandler) {
c.onDisconnectedHandler = onDisconnectedHandler
}
// Disconnect disconnects the connection
// Calling this function a second time doesn't do anything
//
// This is part of the Connection interface
func (c *gRPCConnection) Disconnect() error {
if !c.IsConnected() {
return nil
}
atomic.StoreUint32(&c.isConnected, 0)
close(c.stopChan)
if c.isOutbound {
clientStream := c.stream.(protowire.P2P_MessageStreamClient)
_ = clientStream.CloseSend() // ignore error because we don't really know what's the status of the connection
}
log.Debugf("Disconnected from %s", c)
return c.onDisconnectedHandler()
}
func (c *gRPCConnection) Address() net.Addr {
return c.address
}