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rpcadapters.go
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rpcadapters.go
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// Copyright (c) 2017 The btcsuite developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package main
import (
"sync/atomic"
"github.com/roasbeef/btcd/blockchain"
"github.com/roasbeef/btcd/chaincfg/chainhash"
"github.com/roasbeef/btcd/mempool"
"github.com/roasbeef/btcd/netsync"
"github.com/roasbeef/btcd/peer"
"github.com/roasbeef/btcd/wire"
"github.com/roasbeef/btcutil"
)
// rpcPeer provides a peer for use with the RPC server and implements the
// rpcserverPeer interface.
type rpcPeer serverPeer
// Ensure rpcPeer implements the rpcserverPeer interface.
var _ rpcserverPeer = (*rpcPeer)(nil)
// ToPeer returns the underlying peer instance.
//
// This function is safe for concurrent access and is part of the rpcserverPeer
// interface implementation.
func (p *rpcPeer) ToPeer() *peer.Peer {
if p == nil {
return nil
}
return (*serverPeer)(p).Peer
}
// IsTxRelayDisabled returns whether or not the peer has disabled transaction
// relay.
//
// This function is safe for concurrent access and is part of the rpcserverPeer
// interface implementation.
func (p *rpcPeer) IsTxRelayDisabled() bool {
return (*serverPeer)(p).disableRelayTx
}
// BanScore returns the current integer value that represents how close the peer
// is to being banned.
//
// This function is safe for concurrent access and is part of the rpcserverPeer
// interface implementation.
func (p *rpcPeer) BanScore() uint32 {
return (*serverPeer)(p).banScore.Int()
}
// FeeFilter returns the requested current minimum fee rate for which
// transactions should be announced.
//
// This function is safe for concurrent access and is part of the rpcserverPeer
// interface implementation.
func (p *rpcPeer) FeeFilter() int64 {
return atomic.LoadInt64(&(*serverPeer)(p).feeFilter)
}
// rpcConnManager provides a connection manager for use with the RPC server and
// implements the rpcserverConnManager interface.
type rpcConnManager struct {
server *server
}
// Ensure rpcConnManager implements the rpcserverConnManager interface.
var _ rpcserverConnManager = &rpcConnManager{}
// Connect adds the provided address as a new outbound peer. The permanent flag
// indicates whether or not to make the peer persistent and reconnect if the
// connection is lost. Attempting to connect to an already existing peer will
// return an error.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) Connect(addr string, permanent bool) error {
replyChan := make(chan error)
cm.server.query <- connectNodeMsg{
addr: addr,
permanent: permanent,
reply: replyChan,
}
return <-replyChan
}
// RemoveByID removes the peer associated with the provided id from the list of
// persistent peers. Attempting to remove an id that does not exist will return
// an error.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) RemoveByID(id int32) error {
replyChan := make(chan error)
cm.server.query <- removeNodeMsg{
cmp: func(sp *serverPeer) bool { return sp.ID() == id },
reply: replyChan,
}
return <-replyChan
}
// RemoveByAddr removes the peer associated with the provided address from the
// list of persistent peers. Attempting to remove an address that does not
// exist will return an error.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) RemoveByAddr(addr string) error {
replyChan := make(chan error)
cm.server.query <- removeNodeMsg{
cmp: func(sp *serverPeer) bool { return sp.Addr() == addr },
reply: replyChan,
}
return <-replyChan
}
// DisconnectByID disconnects the peer associated with the provided id. This
// applies to both inbound and outbound peers. Attempting to remove an id that
// does not exist will return an error.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) DisconnectByID(id int32) error {
replyChan := make(chan error)
cm.server.query <- disconnectNodeMsg{
cmp: func(sp *serverPeer) bool { return sp.ID() == id },
reply: replyChan,
}
return <-replyChan
}
// DisconnectByAddr disconnects the peer associated with the provided address.
// This applies to both inbound and outbound peers. Attempting to remove an
// address that does not exist will return an error.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) DisconnectByAddr(addr string) error {
replyChan := make(chan error)
cm.server.query <- disconnectNodeMsg{
cmp: func(sp *serverPeer) bool { return sp.Addr() == addr },
reply: replyChan,
}
return <-replyChan
}
// ConnectedCount returns the number of currently connected peers.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) ConnectedCount() int32 {
return cm.server.ConnectedCount()
}
// NetTotals returns the sum of all bytes received and sent across the network
// for all peers.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) NetTotals() (uint64, uint64) {
return cm.server.NetTotals()
}
// ConnectedPeers returns an array consisting of all connected peers.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) ConnectedPeers() []rpcserverPeer {
replyChan := make(chan []*serverPeer)
cm.server.query <- getPeersMsg{reply: replyChan}
serverPeers := <-replyChan
// Convert to RPC server peers.
peers := make([]rpcserverPeer, 0, len(serverPeers))
for _, sp := range serverPeers {
peers = append(peers, (*rpcPeer)(sp))
}
return peers
}
// PersistentPeers returns an array consisting of all the added persistent
// peers.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) PersistentPeers() []rpcserverPeer {
replyChan := make(chan []*serverPeer)
cm.server.query <- getAddedNodesMsg{reply: replyChan}
serverPeers := <-replyChan
// Convert to generic peers.
peers := make([]rpcserverPeer, 0, len(serverPeers))
for _, sp := range serverPeers {
peers = append(peers, (*rpcPeer)(sp))
}
return peers
}
// BroadcastMessage sends the provided message to all currently connected peers.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) BroadcastMessage(msg wire.Message) {
cm.server.BroadcastMessage(msg)
}
// AddRebroadcastInventory adds the provided inventory to the list of
// inventories to be rebroadcast at random intervals until they show up in a
// block.
//
// This function is safe for concurrent access and is part of the
// rpcserverConnManager interface implementation.
func (cm *rpcConnManager) AddRebroadcastInventory(iv *wire.InvVect, data interface{}) {
cm.server.AddRebroadcastInventory(iv, data)
}
// RelayTransactions generates and relays inventory vectors for all of the
// passed transactions to all connected peers.
func (cm *rpcConnManager) RelayTransactions(txns []*mempool.TxDesc) {
cm.server.relayTransactions(txns)
}
// rpcSyncMgr provides a block manager for use with the RPC server and
// implements the rpcserverSyncManager interface.
type rpcSyncMgr struct {
server *server
syncMgr *netsync.SyncManager
}
// Ensure rpcSyncMgr implements the rpcserverSyncManager interface.
var _ rpcserverSyncManager = (*rpcSyncMgr)(nil)
// IsCurrent returns whether or not the sync manager believes the chain is
// current as compared to the rest of the network.
//
// This function is safe for concurrent access and is part of the
// rpcserverSyncManager interface implementation.
func (b *rpcSyncMgr) IsCurrent() bool {
return b.syncMgr.IsCurrent()
}
// SubmitBlock submits the provided block to the network after processing it
// locally.
//
// This function is safe for concurrent access and is part of the
// rpcserverSyncManager interface implementation.
func (b *rpcSyncMgr) SubmitBlock(block *btcutil.Block, flags blockchain.BehaviorFlags) (bool, error) {
return b.syncMgr.ProcessBlock(block, flags)
}
// Pause pauses the sync manager until the returned channel is closed.
//
// This function is safe for concurrent access and is part of the
// rpcserverSyncManager interface implementation.
func (b *rpcSyncMgr) Pause() chan<- struct{} {
return b.syncMgr.Pause()
}
// SyncPeerID returns the peer that is currently the peer being used to sync
// from.
//
// This function is safe for concurrent access and is part of the
// rpcserverSyncManager interface implementation.
func (b *rpcSyncMgr) SyncPeerID() int32 {
return b.syncMgr.SyncPeerID()
}
// LocateBlocks returns the hashes of the blocks after the first known block in
// the provided locators until the provided stop hash or the current tip is
// reached, up to a max of wire.MaxBlockHeadersPerMsg hashes.
//
// This function is safe for concurrent access and is part of the
// rpcserverSyncManager interface implementation.
func (b *rpcSyncMgr) LocateHeaders(locators []*chainhash.Hash, hashStop *chainhash.Hash) []wire.BlockHeader {
return b.server.chain.LocateHeaders(locators, hashStop)
}