rpcserver: Decouple from server.
This decouples the RPC server from the internal btcd server to move closer to being able to split it out into a separate package. In order to accomplish this, it introduces an rpcserverConfig type and several new interfaces, named rpcserverPeer, rpcserverConnManager, and rpcserverBlockManager, which are necessary to break the direct dependencies on the main server and block manager instances. It also adds concrete implementations of the new interfaces and uses them to configure the RPC server. Ultimately, the RPC server should ideally be decoupled even more such that all of the types in the configuration struct use interfaces instead of the concrete types. Doing this would make the RPC server much easier to internally test since it would allow creating lightweight stubs for the various pieces.
This commit is contained in:
Dave Collins
parent
ca9baf77ec
commit
a7a1029445
4 changed files with 632 additions and 250 deletions
277
rpcadaptors.go
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277
rpcadaptors.go
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@ -0,0 +1,277 @@
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// Copyright (c) 2017 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package main
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import (
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"sync/atomic"
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"github.com/btcsuite/btcd/blockchain"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/mempool"
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"github.com/btcsuite/btcd/peer"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil"
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)
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// rpcPeer provides a peer for use with the RPC server and implements the
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// rpcserverPeer interface.
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type rpcPeer serverPeer
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// Ensure rpcPeer implements the rpcserverPeer interface.
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var _ rpcserverPeer = (*rpcPeer)(nil)
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// ToPeer returns the underlying peer instance.
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//
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// This function is safe for concurrent access and is part of the rpcserverPeer
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// interface implementation.
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func (p *rpcPeer) ToPeer() *peer.Peer {
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if p == nil {
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return nil
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}
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return (*serverPeer)(p).Peer
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}
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// IsTxRelayDisabled returns whether or not the peer has disabled transaction
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// relay.
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//
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// This function is safe for concurrent access and is part of the rpcserverPeer
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// interface implementation.
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func (p *rpcPeer) IsTxRelayDisabled() bool {
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return (*serverPeer)(p).disableRelayTx
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}
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// BanScore returns the current integer value that represents how close the peer
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// is to being banned.
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//
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// This function is safe for concurrent access and is part of the rpcserverPeer
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// interface implementation.
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func (p *rpcPeer) BanScore() uint32 {
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return (*serverPeer)(p).banScore.Int()
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}
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// FeeFilter returns the requested current minimum fee rate for which
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// transactions should be announced.
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//
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// This function is safe for concurrent access and is part of the rpcserverPeer
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// interface implementation.
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func (p *rpcPeer) FeeFilter() int64 {
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return atomic.LoadInt64(&(*serverPeer)(p).feeFilter)
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}
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// rpcConnManager provides a connection manager for use with the RPC server and
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// implements the rpcserverConnManager interface.
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type rpcConnManager struct {
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server *server
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}
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// Ensure rpcConnManager implements the rpcserverConnManager interface.
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var _ rpcserverConnManager = &rpcConnManager{}
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// Connect adds the provided address as a new outbound peer. The permanent flag
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// indicates whether or not to make the peer persistent and reconnect if the
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// connection is lost. Attempting to connect to an already existing peer will
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// return an error.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) Connect(addr string, permanent bool) error {
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replyChan := make(chan error)
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cm.server.query <- connectNodeMsg{
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addr: addr,
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permanent: permanent,
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reply: replyChan,
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}
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return <-replyChan
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}
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// RemoveByID removes the peer associated with the provided id from the list of
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// persistent peers. Attempting to remove an id that does not exist will return
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// an error.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) RemoveByID(id int32) error {
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replyChan := make(chan error)
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cm.server.query <- removeNodeMsg{
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cmp: func(sp *serverPeer) bool { return sp.ID() == id },
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reply: replyChan,
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}
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return <-replyChan
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}
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// RemoveByAddr removes the peer associated with the provided address from the
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// list of persistent peers. Attempting to remove an address that does not
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// exist will return an error.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) RemoveByAddr(addr string) error {
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replyChan := make(chan error)
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cm.server.query <- removeNodeMsg{
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cmp: func(sp *serverPeer) bool { return sp.Addr() == addr },
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reply: replyChan,
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}
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return <-replyChan
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}
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// DisconnectByID disconnects the peer associated with the provided id. This
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// applies to both inbound and outbound peers. Attempting to remove an id that
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// does not exist will return an error.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) DisconnectByID(id int32) error {
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replyChan := make(chan error)
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cm.server.query <- disconnectNodeMsg{
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cmp: func(sp *serverPeer) bool { return sp.ID() == id },
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reply: replyChan,
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}
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return <-replyChan
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}
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// DisconnectByAddr disconnects the peer associated with the provided address.
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// This applies to both inbound and outbound peers. Attempting to remove an
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// address that does not exist will return an error.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) DisconnectByAddr(addr string) error {
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replyChan := make(chan error)
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cm.server.query <- disconnectNodeMsg{
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cmp: func(sp *serverPeer) bool { return sp.Addr() == addr },
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reply: replyChan,
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}
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return <-replyChan
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}
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// ConnectedCount returns the number of currently connected peers.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) ConnectedCount() int32 {
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return cm.server.ConnectedCount()
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}
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// NetTotals returns the sum of all bytes received and sent across the network
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// for all peers.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) NetTotals() (uint64, uint64) {
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return cm.server.NetTotals()
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}
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// ConnectedPeers returns an array consisting of all connected peers.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) ConnectedPeers() []rpcserverPeer {
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replyChan := make(chan []*serverPeer)
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cm.server.query <- getPeersMsg{reply: replyChan}
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serverPeers := <-replyChan
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// Convert to RPC server peers.
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peers := make([]rpcserverPeer, 0, len(serverPeers))
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for _, sp := range serverPeers {
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peers = append(peers, (*rpcPeer)(sp))
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}
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return peers
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}
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// PersistentPeers returns an array consisting of all the added persistent
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// peers.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) PersistentPeers() []rpcserverPeer {
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replyChan := make(chan []*serverPeer)
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cm.server.query <- getAddedNodesMsg{reply: replyChan}
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serverPeers := <-replyChan
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// Convert to generic peers.
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peers := make([]rpcserverPeer, 0, len(serverPeers))
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for _, sp := range serverPeers {
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peers = append(peers, (*rpcPeer)(sp))
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}
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return peers
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}
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// BroadcastMessage sends the provided message to all currently connected peers.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) BroadcastMessage(msg wire.Message) {
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cm.server.BroadcastMessage(msg)
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}
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// AddRebroadcastInventory adds the provided inventory to the list of
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// inventories to be rebroadcast at random intervals until they show up in a
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// block.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverConnManager interface implementation.
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func (cm *rpcConnManager) AddRebroadcastInventory(iv *wire.InvVect, data interface{}) {
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cm.server.AddRebroadcastInventory(iv, data)
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}
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// RelayTransactions generates and relays inventory vectors for all of the
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// passed transactions to all connected peers.
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func (cm *rpcConnManager) RelayTransactions(txns []*mempool.TxDesc) {
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cm.server.relayTransactions(txns)
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}
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// rpcSyncMgr provides a block manager for use with the RPC server and
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// implements the rpcserverSyncManager interface.
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type rpcSyncMgr struct {
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server *server
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blockMgr *blockManager
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}
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// Ensure rpcSyncMgr implements the rpcserverSyncManager interface.
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var _ rpcserverSyncManager = (*rpcSyncMgr)(nil)
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// IsCurrent returns whether or not the sync manager believes the chain is
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// current as compared to the rest of the network.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverSyncManager interface implementation.
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func (b *rpcSyncMgr) IsCurrent() bool {
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return b.blockMgr.IsCurrent()
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}
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// SubmitBlock submits the provided block to the network after processing it
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// locally.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverSyncManager interface implementation.
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func (b *rpcSyncMgr) SubmitBlock(block *btcutil.Block, flags blockchain.BehaviorFlags) (bool, error) {
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return b.blockMgr.ProcessBlock(block, flags)
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}
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// Pause pauses the sync manager until the returned channel is closed.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverSyncManager interface implementation.
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func (b *rpcSyncMgr) Pause() chan<- struct{} {
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return b.blockMgr.Pause()
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}
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// SyncPeer returns the peer that is currently the peer being used to sync from.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverSyncManager interface implementation.
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func (b *rpcSyncMgr) SyncPeer() rpcserverPeer {
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return (*rpcPeer)(b.blockMgr.SyncPeer())
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}
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// LocateBlocks returns the hashes of the blocks after the first known block in
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// the provided locators until the provided stop hash or the current tip is
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// reached, up to a max of wire.MaxBlockHeadersPerMsg hashes.
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//
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// This function is safe for concurrent access and is part of the
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// rpcserverSyncManager interface implementation.
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func (b *rpcSyncMgr) LocateBlocks(locators []*chainhash.Hash, hashStop *chainhash.Hash) ([]chainhash.Hash, error) {
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return b.server.locateBlocks(locators, hashStop)
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}
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457
rpcserver.go
457
rpcserver.go
File diff suppressed because it is too large
Load diff
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@ -656,7 +656,7 @@ func (m *wsNotificationManager) subscribedClients(tx *btcutil.Tx,
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for i, output := range msgTx.TxOut {
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_, addrs, _, err := txscript.ExtractPkScriptAddrs(
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output.PkScript, m.server.server.chainParams)
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output.PkScript, m.server.cfg.ChainParams)
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if err != nil {
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// Clients are not able to subscribe to
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// nonstandard or non-address outputs.
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@ -846,7 +846,7 @@ func (m *wsNotificationManager) notifyForNewTx(clients map[chan struct{}]*wsClie
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continue
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}
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net := m.server.server.chainParams
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net := m.server.cfg.ChainParams
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rawTx, err := createTxRawResult(net, mtx, txHashStr, nil,
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"", 0, 0)
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if err != nil {
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@ -983,7 +983,7 @@ func (m *wsNotificationManager) notifyForTxOuts(ops map[wire.OutPoint]map[chan s
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wscNotified := make(map[chan struct{}]struct{})
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for i, txOut := range tx.MsgTx().TxOut {
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_, txAddrs, _, err := txscript.ExtractPkScriptAddrs(
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txOut.PkScript, m.server.server.chainParams)
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txOut.PkScript, m.server.cfg.ChainParams)
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if err != nil {
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continue
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}
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@ -2029,7 +2029,7 @@ func rescanBlock(wsc *wsClient, lookups *rescanKeys, blk *btcutil.Block) {
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for txOutIdx, txout := range tx.MsgTx().TxOut {
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_, addrs, _, _ := txscript.ExtractPkScriptAddrs(
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txout.PkScript, wsc.server.server.chainParams)
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txout.PkScript, wsc.server.cfg.ChainParams)
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for _, addr := range addrs {
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switch a := addr.(type) {
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@ -2218,7 +2218,7 @@ func handleRescanBlocks(wsc *wsClient, icmd interface{}) (interface{}, error) {
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// Iterate over each block in the request and rescan. When a block
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// contains relevant transactions, add it to the response.
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bc := wsc.server.server.blockManager.chain
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bc := wsc.server.cfg.Chain
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var lastBlockHash *chainhash.Hash
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for i := range blockHashes {
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block, err := bc.BlockByHash(blockHashes[i])
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@ -2389,7 +2389,7 @@ func handleRescan(wsc *wsClient, icmd interface{}) (interface{}, error) {
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lookups.unspent[*outpoint] = struct{}{}
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}
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chain := wsc.server.chain
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chain := wsc.server.cfg.Chain
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minBlockHash, err := chainhash.NewHashFromStr(cmd.BeginBlock)
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if err != nil {
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@ -2469,9 +2469,8 @@ fetchRange:
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// continuous notifications if necessary. Otherwise,
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// continue the fetch loop again to rescan the new
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// blocks (or error due to an irrecoverable reorganize).
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blockManager := wsc.server.server.blockManager
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pauseGuard := blockManager.Pause()
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best := blockManager.chain.BestSnapshot()
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pauseGuard := wsc.server.cfg.SyncMgr.Pause()
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best := wsc.server.cfg.Chain.BestSnapshot()
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curHash := &best.Hash
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again := true
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if lastBlockHash == nil || *lastBlockHash == *curHash {
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131
server.go
131
server.go
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@ -1072,28 +1072,28 @@ func (s *server) RemoveRebroadcastInventory(iv *wire.InvVect) {
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s.modifyRebroadcastInv <- broadcastInventoryDel(iv)
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}
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// relayTransactions generates and relays inventory vectors for all of the
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// passed transactions to all connected peers.
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func (s *server) relayTransactions(txns []*mempool.TxDesc) {
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for _, txD := range txns {
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iv := wire.NewInvVect(wire.InvTypeTx, txD.Tx.Hash())
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s.RelayInventory(iv, txD)
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}
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}
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// AnnounceNewTransactions generates and relays inventory vectors and notifies
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// both websocket and getblocktemplate long poll clients of the passed
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// transactions. This function should be called whenever new transactions
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// are added to the mempool.
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func (s *server) AnnounceNewTransactions(newTxs []*mempool.TxDesc) {
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func (s *server) AnnounceNewTransactions(txns []*mempool.TxDesc) {
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// Generate and relay inventory vectors for all newly accepted
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// transactions into the memory pool due to the original being
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// accepted.
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for _, txD := range newTxs {
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// Generate the inventory vector and relay it.
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iv := wire.NewInvVect(wire.InvTypeTx, txD.Tx.Hash())
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s.RelayInventory(iv, txD)
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// transactions.
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s.relayTransactions(txns)
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if s.rpcServer != nil {
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// Notify websocket clients about mempool transactions.
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s.rpcServer.ntfnMgr.NotifyMempoolTx(txD.Tx, true)
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// Potentially notify any getblocktemplate long poll clients
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// about stale block templates due to the new transaction.
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s.rpcServer.gbtWorkState.NotifyMempoolTx(
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s.txMemPool.LastUpdated())
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}
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// Notify both websocket and getblocktemplate long poll clients of all
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// newly accepted transactions.
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if s.rpcServer != nil {
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s.rpcServer.NotifyNewTransactions(txns)
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}
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}
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@ -1892,88 +1892,6 @@ func (s *server) OutboundGroupCount(key string) int {
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return <-replyChan
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}
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// AddedNodeInfo returns an array of btcjson.GetAddedNodeInfoResult structures
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// describing the persistent (added) nodes.
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func (s *server) AddedNodeInfo() []*serverPeer {
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replyChan := make(chan []*serverPeer)
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s.query <- getAddedNodesMsg{reply: replyChan}
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return <-replyChan
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}
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// Peers returns an array of all connected peers.
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func (s *server) Peers() []*serverPeer {
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replyChan := make(chan []*serverPeer)
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s.query <- getPeersMsg{reply: replyChan}
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return <-replyChan
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}
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// DisconnectNodeByAddr disconnects a peer by target address. Both outbound and
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// inbound nodes will be searched for the target node. An error message will
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// be returned if the peer was not found.
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func (s *server) DisconnectNodeByAddr(addr string) error {
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replyChan := make(chan error)
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s.query <- disconnectNodeMsg{
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cmp: func(sp *serverPeer) bool { return sp.Addr() == addr },
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reply: replyChan,
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}
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return <-replyChan
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}
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// DisconnectNodeByID disconnects a peer by target node id. Both outbound and
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// inbound nodes will be searched for the target node. An error message will be
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// returned if the peer was not found.
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func (s *server) DisconnectNodeByID(id int32) error {
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replyChan := make(chan error)
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s.query <- disconnectNodeMsg{
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cmp: func(sp *serverPeer) bool { return sp.ID() == id },
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reply: replyChan,
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}
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return <-replyChan
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}
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// RemoveNodeByAddr removes a peer from the list of persistent peers if
|
||||
// present. An error will be returned if the peer was not found.
|
||||
func (s *server) RemoveNodeByAddr(addr string) error {
|
||||
replyChan := make(chan error)
|
||||
|
||||
s.query <- removeNodeMsg{
|
||||
cmp: func(sp *serverPeer) bool { return sp.Addr() == addr },
|
||||
reply: replyChan,
|
||||
}
|
||||
|
||||
return <-replyChan
|
||||
}
|
||||
|
||||
// RemoveNodeByID removes a peer by node ID from the list of persistent peers
|
||||
// if present. An error will be returned if the peer was not found.
|
||||
func (s *server) RemoveNodeByID(id int32) error {
|
||||
replyChan := make(chan error)
|
||||
|
||||
s.query <- removeNodeMsg{
|
||||
cmp: func(sp *serverPeer) bool { return sp.ID() == id },
|
||||
reply: replyChan,
|
||||
}
|
||||
|
||||
return <-replyChan
|
||||
}
|
||||
|
||||
// ConnectNode adds `addr' as a new outbound peer. If permanent is true then the
|
||||
// peer will be persistent and reconnect if the connection is lost.
|
||||
// It is an error to call this with an already existing peer.
|
||||
func (s *server) ConnectNode(addr string, permanent bool) error {
|
||||
replyChan := make(chan error)
|
||||
|
||||
s.query <- connectNodeMsg{addr: addr, permanent: permanent, reply: replyChan}
|
||||
|
||||
return <-replyChan
|
||||
}
|
||||
|
||||
// AddBytesSent adds the passed number of bytes to the total bytes sent counter
|
||||
// for the server. It is safe for concurrent access.
|
||||
func (s *server) AddBytesSent(bytesSent uint64) {
|
||||
|
|
@ -2625,8 +2543,21 @@ func newServer(listenAddrs []string, db database.DB, chainParams *chaincfg.Param
|
|||
}
|
||||
|
||||
if !cfg.DisableRPC {
|
||||
s.rpcServer, err = newRPCServer(cfg.RPCListeners,
|
||||
blockTemplateGenerator, &s)
|
||||
s.rpcServer, err = newRPCServer(&rpcserverConfig{
|
||||
ListenAddrs: cfg.RPCListeners,
|
||||
StartupTime: s.startupTime,
|
||||
ConnMgr: &rpcConnManager{&s},
|
||||
SyncMgr: &rpcSyncMgr{&s, s.blockManager},
|
||||
TimeSource: s.timeSource,
|
||||
Chain: s.blockManager.chain,
|
||||
ChainParams: chainParams,
|
||||
DB: db,
|
||||
TxMemPool: s.txMemPool,
|
||||
Generator: blockTemplateGenerator,
|
||||
CPUMiner: s.cpuMiner,
|
||||
TxIndex: s.txIndex,
|
||||
AddrIndex: s.addrIndex,
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue