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p2p, swarm: fix node up races by granular locking (#18976)

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* swarm/network: DRY out repeated giga comment

I not necessarily agree with the way we wait for event propagation.
But I truly disagree with having duplicated giga comments.

* p2p/simulations: encapsulate Node.Up field so we avoid data races

The Node.Up field was accessed concurrently without "proper" locking.
There was a lock on Network and that was used sometimes to access
the  field. Other times the locking was missed and we had
a data race.

For example: https://github.com/ethereum/go-ethereum/pull/18464
The case above was solved, but there were still intermittent/hard to
reproduce races. So let's solve the issue permanently.

resolves: ethersphere/go-ethereum#1146

* p2p/simulations: fix unmarshal of simulations.Node

Making Node.Up field private in 13292ee897e345045fbfab3bda23a77589a271c1
broke TestHTTPNetwork and TestHTTPSnapshot. Because the default
UnmarshalJSON does not handle unexported fields.

Important: The fix is partial and not proper to my taste. But I cut
scope as I think the fix may require a change to the current
serialization format. New ticket:
https://github.com/ethersphere/go-ethereum/issues/1177

* p2p/simulations: Add a sanity test case for Node.Config UnmarshalJSON

* p2p/simulations: revert back to defer Unlock() pattern for Network

It's a good patten to call `defer Unlock()` right after `Lock()` so
(new) error cases won't miss to unlock. Let's get back to that pattern.

The patten was abandoned in 85a79b3ad3,
while fixing a data race. That data race does not exist anymore,
since the Node.Up field got hidden behind its own lock.

* p2p/simulations: consistent naming for test providers Node.UnmarshalJSON

* p2p/simulations: remove JSON annotation from private fields of Node

As unexported fields are not serialized.

* p2p/simulations: fix deadlock in Network.GetRandomDownNode()

Problem: GetRandomDownNode() locks -> getDownNodeIDs() ->
GetNodes() tries to lock -> deadlock

On Network type, unexported functions must assume that `net.lock`
is already acquired and should not call exported functions which
might try to lock again.

* p2p/simulations: ensure method conformity for Network

Connect* methods were moved to p2p/simulations.Network from
swarm/network/simulation. However these new methods did not follow
the pattern of Network methods, i.e., all exported method locks
the whole Network either for read or write.

* p2p/simulations: fix deadlock during network shutdown

`TestDiscoveryPersistenceSimulationSimAdapter` often got into deadlock.
The execution was stuck on two locks, i.e, `Kademlia.lock` and
`p2p/simulations.Network.lock`. Usually the test got stuck once in each
20 executions with high confidence.

`Kademlia` was stuck in `Kademlia.EachAddr()` and `Network` in
`Network.Stop()`.

Solution: in `Network.Stop()` `net.lock` must be released before
calling `node.Stop()` as stopping a node (somehow - I did not find
the exact code path) causes `Network.InitConn()` to be called from
`Kademlia.SuggestPeer()` and that blocks on `net.lock`.

Related ticket: https://github.com/ethersphere/go-ethereum/issues/1223

* swarm/state: simplify if statement in DBStore.Put()

* p2p/simulations: remove faulty godoc from private function

The comment started with the wrong method name.

The method is simple and self explanatory. Also, it's private.
=> Let's just remove the comment.
This commit is contained in:
Ferenc Szabo 2019-02-18 07:38:14 +01:00 committed by Viktor Trón
parent 12ca3b172a
commit 50b872bf05
12 changed files with 326 additions and 126 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
p2p/simulations/connect.go
View File

@ -32,6 +32,9 @@ var (
// It is useful when constructing a chain network topology
// when Network adds and removes nodes dynamically.
func (net *Network) ConnectToLastNode(id enode.ID) (err error) {
net.lock.Lock()
defer net.lock.Unlock()
ids := net.getUpNodeIDs()
l := len(ids)
if l < 2 {
@ -41,29 +44,35 @@ func (net *Network) ConnectToLastNode(id enode.ID) (err error) {
if last == id {
last = ids[l-2]
}
return net.connect(last, id)
return net.connectNotConnected(last, id)
}
// ConnectToRandomNode connects the node with provided NodeID
// to a random node that is up.
func (net *Network) ConnectToRandomNode(id enode.ID) (err error) {
selected := net.GetRandomUpNode(id)
net.lock.Lock()
defer net.lock.Unlock()
selected := net.getRandomUpNode(id)
if selected == nil {
return ErrNodeNotFound
}
return net.connect(selected.ID(), id)
return net.connectNotConnected(selected.ID(), id)
}
// ConnectNodesFull connects all nodes one to another.
// It provides a complete connectivity in the network
// which should be rarely needed.
func (net *Network) ConnectNodesFull(ids []enode.ID) (err error) {
net.lock.Lock()
defer net.lock.Unlock()
if ids == nil {
ids = net.getUpNodeIDs()
}
for i, lid := range ids {
for _, rid := range ids[i+1:] {
if err = net.connect(lid, rid); err != nil {
if err = net.connectNotConnected(lid, rid); err != nil {
return err
}
}
@ -74,12 +83,19 @@ func (net *Network) ConnectNodesFull(ids []enode.ID) (err error) {
// ConnectNodesChain connects all nodes in a chain topology.
// If ids argument is nil, all nodes that are up will be connected.
func (net *Network) ConnectNodesChain(ids []enode.ID) (err error) {
net.lock.Lock()
defer net.lock.Unlock()
return net.connectNodesChain(ids)
}
func (net *Network) connectNodesChain(ids []enode.ID) (err error) {
if ids == nil {
ids = net.getUpNodeIDs()
}
l := len(ids)
for i := 0; i < l-1; i++ {
if err := net.connect(ids[i], ids[i+1]); err != nil {
if err := net.connectNotConnected(ids[i], ids[i+1]); err != nil {
return err
}
}
@ -89,6 +105,9 @@ func (net *Network) ConnectNodesChain(ids []enode.ID) (err error) {
// ConnectNodesRing connects all nodes in a ring topology.
// If ids argument is nil, all nodes that are up will be connected.
func (net *Network) ConnectNodesRing(ids []enode.ID) (err error) {
net.lock.Lock()
defer net.lock.Unlock()
if ids == nil {
ids = net.getUpNodeIDs()
}
@ -96,15 +115,18 @@ func (net *Network) ConnectNodesRing(ids []enode.ID) (err error) {
if l < 2 {
return nil
}
if err := net.ConnectNodesChain(ids); err != nil {
if err := net.connectNodesChain(ids); err != nil {
return err
}
return net.connect(ids[l-1], ids[0])
return net.connectNotConnected(ids[l-1], ids[0])
}
// ConnectNodesStar connects all nodes into a star topology
// If ids argument is nil, all nodes that are up will be connected.
func (net *Network) ConnectNodesStar(ids []enode.ID, center enode.ID) (err error) {
net.lock.Lock()
defer net.lock.Unlock()
if ids == nil {
ids = net.getUpNodeIDs()
}
@ -112,16 +134,15 @@ func (net *Network) ConnectNodesStar(ids []enode.ID, center enode.ID) (err error
if center == id {
continue
}
if err := net.connect(center, id); err != nil {
if err := net.connectNotConnected(center, id); err != nil {
return err
}
}
return nil
}
// connect connects two nodes but ignores already connected error.
func (net *Network) connect(oneID, otherID enode.ID) error {
return ignoreAlreadyConnectedErr(net.Connect(oneID, otherID))
func (net *Network) connectNotConnected(oneID, otherID enode.ID) error {
return ignoreAlreadyConnectedErr(net.connect(oneID, otherID))
}
func ignoreAlreadyConnectedErr(err error) error {

2
p2p/simulations/events.go
View File

@ -100,7 +100,7 @@ func ControlEvent(v interface{}) *Event {
func (e *Event) String() string {
switch e.Type {
case EventTypeNode:
return fmt.Sprintf("<node-event> id: %s up: %t", e.Node.ID().TerminalString(), e.Node.Up)
return fmt.Sprintf("<node-event> id: %s up: %t", e.Node.ID().TerminalString(), e.Node.Up())
case EventTypeConn:
return fmt.Sprintf("<conn-event> nodes: %s->%s up: %t", e.Conn.One.TerminalString(), e.Conn.Other.TerminalString(), e.Conn.Up)
case EventTypeMsg:

18
p2p/simulations/http_test.go
View File

@ -421,14 +421,15 @@ type expectEvents struct {
}
func (t *expectEvents) nodeEvent(id string, up bool) *Event {
node := Node{
Config: &adapters.NodeConfig{
ID: enode.HexID(id),
},
up: up,
}
return &Event{
Type: EventTypeNode,
Node: &Node{
Config: &adapters.NodeConfig{
ID: enode.HexID(id),
},
Up: up,
},
Node: &node,
}
}
@ -480,6 +481,7 @@ loop:
}
func (t *expectEvents) expect(events ...*Event) {
t.Helper()
timeout := time.After(10 * time.Second)
i := 0
for {
@ -501,8 +503,8 @@ func (t *expectEvents) expect(events ...*Event) {
if event.Node.ID() != expected.Node.ID() {
t.Fatalf("expected node event %d to have id %q, got %q", i, expected.Node.ID().TerminalString(), event.Node.ID().TerminalString())
}
if event.Node.Up != expected.Node.Up {
t.Fatalf("expected node event %d to have up=%t, got up=%t", i, expected.Node.Up, event.Node.Up)
if event.Node.Up() != expected.Node.Up() {
t.Fatalf("expected node event %d to have up=%t, got up=%t", i, expected.Node.Up(), event.Node.Up())
}
case EventTypeConn:

9
p2p/simulations/mocker_test.go
View File

@ -90,15 +90,12 @@ func TestMocker(t *testing.T) {
for {
select {
case event := <-events:
//if the event is a node Up event only
if event.Node != nil && event.Node.Up {
if isNodeUp(event) {
//add the correspondent node ID to the map
nodemap[event.Node.Config.ID] = true
//this means all nodes got a nodeUp event, so we can continue the test
if len(nodemap) == nodeCount {
nodesComplete = true
//wait for 3s as the mocker will need time to connect the nodes
//time.Sleep( 3 *time.Second)
}
} else if event.Conn != nil && nodesComplete {
connCount += 1
@ -169,3 +166,7 @@ func TestMocker(t *testing.T) {
t.Fatalf("Expected empty list of nodes, got: %d", len(nodesInfo))
}
}
func isNodeUp(event *Event) bool {
return event.Node != nil && event.Node.Up()
}

157
p2p/simulations/network.go
View File

@ -137,7 +137,7 @@ func (net *Network) Config() *NetworkConfig {
// StartAll starts all nodes in the network
func (net *Network) StartAll() error {
for _, node := range net.Nodes {
if node.Up {
if node.Up() {
continue
}
if err := net.Start(node.ID()); err != nil {
@ -150,7 +150,7 @@ func (net *Network) StartAll() error {
// StopAll stops all nodes in the network
func (net *Network) StopAll() error {
for _, node := range net.Nodes {
if !node.Up {
if !node.Up() {
continue
}
if err := net.Stop(node.ID()); err != nil {
@ -169,27 +169,23 @@ func (net *Network) Start(id enode.ID) error {
// snapshots
func (net *Network) startWithSnapshots(id enode.ID, snapshots map[string][]byte) error {
net.lock.Lock()
defer net.lock.Unlock()
node := net.getNode(id)
if node == nil {
net.lock.Unlock()
return fmt.Errorf("node %v does not exist", id)
}
if node.Up {
net.lock.Unlock()
if node.Up() {
return fmt.Errorf("node %v already up", id)
}
log.Trace("Starting node", "id", id, "adapter", net.nodeAdapter.Name())
if err := node.Start(snapshots); err != nil {
net.lock.Unlock()
log.Warn("Node startup failed", "id", id, "err", err)
return err
}
node.Up = true
node.SetUp(true)
log.Info("Started node", "id", id)
ev := NewEvent(node)
net.lock.Unlock()
net.events.Send(ev)
// subscribe to peer events
@ -220,7 +216,7 @@ func (net *Network) watchPeerEvents(id enode.ID, events chan *p2p.PeerEvent, sub
if node == nil {
return
}
node.Up = false
node.SetUp(false)
ev := NewEvent(node)
net.events.Send(ev)
}()
@ -258,30 +254,42 @@ func (net *Network) watchPeerEvents(id enode.ID, events chan *p2p.PeerEvent, sub
// Stop stops the node with the given ID
func (net *Network) Stop(id enode.ID) error {
net.lock.Lock()
node := net.getNode(id)
if node == nil {
net.lock.Unlock()
return fmt.Errorf("node %v does not exist", id)
}
if !node.Up {
net.lock.Unlock()
return fmt.Errorf("node %v already down", id)
}
node.Up = false
net.lock.Unlock()
// IMPORTANT: node.Stop() must NOT be called under net.lock as
// node.Reachable() closure has a reference to the network and
// calls net.InitConn() what also locks the network. => DEADLOCK
// That holds until the following ticket is not resolved:
err := node.Stop()
if err != nil {
var err error
node, err := func() (*Node, error) {
net.lock.Lock()
node.Up = true
net.lock.Unlock()
defer net.lock.Unlock()
node := net.getNode(id)
if node == nil {
return nil, fmt.Errorf("node %v does not exist", id)
}
if !node.Up() {
return nil, fmt.Errorf("node %v already down", id)
}
node.SetUp(false)
return node, nil
}()
if err != nil {
return err
}
err = node.Stop() // must be called without net.lock
net.lock.Lock()
defer net.lock.Unlock()
if err != nil {
node.SetUp(true)
return err
}
log.Info("Stopped node", "id", id, "err", err)
net.lock.Lock()
ev := ControlEvent(node)
net.lock.Unlock()
net.events.Send(ev)
return nil
}
@ -289,8 +297,14 @@ func (net *Network) Stop(id enode.ID) error {
// Connect connects two nodes together by calling the "admin_addPeer" RPC
// method on the "one" node so that it connects to the "other" node
func (net *Network) Connect(oneID, otherID enode.ID) error {
net.lock.Lock()
defer net.lock.Unlock()
return net.connect(oneID, otherID)
}
func (net *Network) connect(oneID, otherID enode.ID) error {
log.Debug("Connecting nodes with addPeer", "id", oneID, "other", otherID)
conn, err := net.InitConn(oneID, otherID)
conn, err := net.initConn(oneID, otherID)
if err != nil {
return err
}
@ -388,6 +402,14 @@ func (net *Network) GetNode(id enode.ID) *Node {
return net.getNode(id)
}
func (net *Network) getNode(id enode.ID) *Node {
i, found := net.nodeMap[id]
if !found {
return nil
}
return net.Nodes[i]
}
// GetNode gets the node with the given name, returning nil if the node does
// not exist
func (net *Network) GetNodeByName(name string) *Node {
@ -410,28 +432,29 @@ func (net *Network) GetNodes() (nodes []*Node) {
net.lock.RLock()
defer net.lock.RUnlock()
nodes = append(nodes, net.Nodes...)
return nodes
return net.getNodes()
}
func (net *Network) getNode(id enode.ID) *Node {
i, found := net.nodeMap[id]
if !found {
return nil
}
return net.Nodes[i]
func (net *Network) getNodes() (nodes []*Node) {
nodes = append(nodes, net.Nodes...)
return nodes
}
// GetRandomUpNode returns a random node on the network, which is running.
func (net *Network) GetRandomUpNode(excludeIDs ...enode.ID) *Node {
net.lock.RLock()
defer net.lock.RUnlock()
return net.getRandomUpNode(excludeIDs...)
}
// GetRandomUpNode returns a random node on the network, which is running.
func (net *Network) getRandomUpNode(excludeIDs ...enode.ID) *Node {
return net.getRandomNode(net.getUpNodeIDs(), excludeIDs)
}
func (net *Network) getUpNodeIDs() (ids []enode.ID) {
for _, node := range net.Nodes {
if node.Up {
if node.Up() {
ids = append(ids, node.ID())
}
}
@ -446,8 +469,8 @@ func (net *Network) GetRandomDownNode(excludeIDs ...enode.ID) *Node {
}
func (net *Network) getDownNodeIDs() (ids []enode.ID) {
for _, node := range net.GetNodes() {
if !node.Up {
for _, node := range net.getNodes() {
if !node.Up() {
ids = append(ids, node.ID())
}
}
@ -539,6 +562,10 @@ func (net *Network) getConn(oneID, otherID enode.ID) *Conn {
func (net *Network) InitConn(oneID, otherID enode.ID) (*Conn, error) {
net.lock.Lock()
defer net.lock.Unlock()
return net.initConn(oneID, otherID)
}
func (net *Network) initConn(oneID, otherID enode.ID) (*Conn, error) {
if oneID == otherID {
return nil, fmt.Errorf("refusing to connect to self %v", oneID)
}
@ -602,8 +629,21 @@ type Node struct {
// Config if the config used to created the node
Config *adapters.NodeConfig `json:"config"`
// Up tracks whether or not the node is running
Up bool `json:"up"`
// up tracks whether or not the node is running
up bool
upMu sync.RWMutex
}
func (n *Node) Up() bool {
n.upMu.RLock()
defer n.upMu.RUnlock()
return n.up
}
func (n *Node) SetUp(up bool) {
n.upMu.Lock()
defer n.upMu.Unlock()
n.up = up
}
// ID returns the ID of the node
@ -637,10 +677,29 @@ func (n *Node) MarshalJSON() ([]byte, error) {
}{
Info: n.NodeInfo(),
Config: n.Config,
Up: n.Up,
Up: n.Up(),
})
}
// UnmarshalJSON implements json.Unmarshaler interface so that we don't lose
// Node.up status. IMPORTANT: The implementation is incomplete; we lose
// p2p.NodeInfo.
func (n *Node) UnmarshalJSON(raw []byte) error {
// TODO: How should we turn back NodeInfo into n.Node?
// Ticket: https://github.com/ethersphere/go-ethereum/issues/1177
node := struct {
Config *adapters.NodeConfig `json:"config,omitempty"`
Up bool `json:"up"`
}{}
if err := json.Unmarshal(raw, &node); err != nil {
return err
}
n.SetUp(node.Up)
n.Config = node.Config
return nil
}
// Conn represents a connection between two nodes in the network
type Conn struct {
// One is the node which initiated the connection
@ -660,10 +719,10 @@ type Conn struct {
// nodesUp returns whether both nodes are currently up
func (c *Conn) nodesUp() error {
if !c.one.Up {
if !c.one.Up() {
return fmt.Errorf("one %v is not up", c.One)
}
if !c.other.Up {
if !c.other.Up() {
return fmt.Errorf("other %v is not up", c.Other)
}
return nil
@ -735,7 +794,7 @@ func (net *Network) snapshot(addServices []string, removeServices []string) (*Sn
}
for i, node := range net.Nodes {
snap.Nodes[i] = NodeSnapshot{Node: *node}
if !node.Up {
if !node.Up() {
continue
}
snapshots, err := node.Snapshots()
@ -790,7 +849,7 @@ func (net *Network) Load(snap *Snapshot) error {
if _, err := net.NewNodeWithConfig(n.Node.Config); err != nil {
return err
}
if !n.Node.Up {
if !n.Node.Up() {
continue
}
if err := net.startWithSnapshots(n.Node.Config.ID, n.Snapshots); err != nil {
@ -862,7 +921,7 @@ func (net *Network) Load(snap *Snapshot) error {
// Start connecting.
for _, conn := range snap.Conns {
if !net.GetNode(conn.One).Up || !net.GetNode(conn.Other).Up {
if !net.GetNode(conn.One).Up() || !net.GetNode(conn.Other).Up() {
//in this case, at least one of the nodes of a connection is not up,
//so it would result in the snapshot `Load` to fail
continue
@ -916,7 +975,7 @@ func (net *Network) executeControlEvent(event *Event) {
}
func (net *Network) executeNodeEvent(e *Event) error {
if !e.Node.Up {
if !e.Node.Up() {
return net.Stop(e.Node.ID())
}

135
p2p/simulations/network_test.go
View File

@ -20,6 +20,7 @@ import (
"context"
"encoding/json"
"fmt"
"reflect"
"strconv"
"strings"
"testing"
@ -485,3 +486,137 @@ func benchmarkMinimalServiceTmp(b *testing.B) {
}
}
}
func TestNode_UnmarshalJSON(t *testing.T) {
t.Run(
"test unmarshal of Node up field",
func(t *testing.T) {
runNodeUnmarshalJSON(t, casesNodeUnmarshalJSONUpField())
},
)
t.Run(
"test unmarshal of Node Config field",
func(t *testing.T) {
runNodeUnmarshalJSON(t, casesNodeUnmarshalJSONConfigField())
},
)
}
func runNodeUnmarshalJSON(t *testing.T, tests []nodeUnmarshalTestCase) {
t.Helper()
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var got Node
if err := got.UnmarshalJSON([]byte(tt.marshaled)); err != nil {
expectErrorMessageToContain(t, err, tt.wantErr)
}
expectNodeEquality(t, got, tt.want)
})
}
}
type nodeUnmarshalTestCase struct {
name string
marshaled string
want Node
wantErr string
}
func expectErrorMessageToContain(t *testing.T, got error, want string) {
t.Helper()
if got == nil && want == "" {
return
}
if got == nil && want != "" {
t.Errorf("error was expected, got: nil, want: %v", want)
return
}
if !strings.Contains(got.Error(), want) {
t.Errorf(
"unexpected error message, got %v, want: %v",
want,
got,
)
}
}
func expectNodeEquality(t *testing.T, got Node, want Node) {
t.Helper()
if !reflect.DeepEqual(got, want) {
t.Errorf("Node.UnmarshalJSON() = %v, want %v", got, want)
}
}
func casesNodeUnmarshalJSONUpField() []nodeUnmarshalTestCase {
return []nodeUnmarshalTestCase{
{
name: "empty json",
marshaled: "{}",
want: Node{
up: false,
},
},
{
name: "a stopped node",
marshaled: "{\"up\": false}",
want: Node{
up: false,
},
},
{
name: "a running node",
marshaled: "{\"up\": true}",
want: Node{
up: true,
},
},
{
name: "invalid JSON value on valid key",
marshaled: "{\"up\": foo}",
wantErr: "invalid character",
},
{
name: "invalid JSON key and value",
marshaled: "{foo: bar}",
wantErr: "invalid character",
},
{
name: "bool value expected but got something else (string)",
marshaled: "{\"up\": \"true\"}",
wantErr: "cannot unmarshal string into Go struct",
},
}
}
func casesNodeUnmarshalJSONConfigField() []nodeUnmarshalTestCase {
// Don't do a big fuss around testing, as adapters.NodeConfig should
// handle it's own serialization. Just do a sanity check.
return []nodeUnmarshalTestCase{
{
name: "Config field is omitted",
marshaled: "{}",
want: Node{
Config: nil,
},
},
{
name: "Config field is nil",
marshaled: "{\"config\": nil}",
want: Node{
Config: nil,
},
},
{
name: "a non default Config field",
marshaled: "{\"config\":{\"name\":\"node_ecdd0\",\"port\":44665}}",
want: Node{
Config: &adapters.NodeConfig{
Name: "node_ecdd0",
Port: 44665,
},
},
},
}
}

4
swarm/network/simulation/node.go
View File

@ -44,7 +44,7 @@ func (s *Simulation) NodeIDs() (ids []enode.ID) {
func (s *Simulation) UpNodeIDs() (ids []enode.ID) {
nodes := s.Net.GetNodes()
for _, node := range nodes {
if node.Up {
if node.Up() {
ids = append(ids, node.ID())
}
}
@ -55,7 +55,7 @@ func (s *Simulation) UpNodeIDs() (ids []enode.ID) {
func (s *Simulation) DownNodeIDs() (ids []enode.ID) {
nodes := s.Net.GetNodes()
for _, node := range nodes {
if !node.Up {
if !node.Up() {
ids = append(ids, node.ID())
}
}

63
swarm/network/simulation/node_test.go
View File

@ -54,7 +54,7 @@ func TestUpDownNodeIDs(t *testing.T) {
gotIDs = sim.UpNodeIDs()
for _, id := range gotIDs {
if !sim.Net.GetNode(id).Up {
if !sim.Net.GetNode(id).Up() {
t.Errorf("node %s should not be down", id)
}
}
@ -66,7 +66,7 @@ func TestUpDownNodeIDs(t *testing.T) {
gotIDs = sim.DownNodeIDs()
for _, id := range gotIDs {
if sim.Net.GetNode(id).Up {
if sim.Net.GetNode(id).Up() {
t.Errorf("node %s should not be up", id)
}
}
@ -112,7 +112,7 @@ func TestAddNode(t *testing.T) {
t.Fatal("node not found")
}
if !n.Up {
if !n.Up() {
t.Error("node not started")
}
}
@ -327,7 +327,7 @@ func TestStartStopNode(t *testing.T) {
if n == nil {
t.Fatal("node not found")
}
if !n.Up {
if !n.Up() {
t.Error("node not started")
}
@ -335,26 +335,17 @@ func TestStartStopNode(t *testing.T) {
if err != nil {
t.Fatal(err)
}
if n.Up {
if n.Up() {
t.Error("node not stopped")
}
// Sleep here to ensure that Network.watchPeerEvents defer function
// has set the `node.Up = false` before we start the node again.
// p2p/simulations/network.go:215
//
// The same node is stopped and started again, and upon start
// watchPeerEvents is started in a goroutine. If the node is stopped
// and then very quickly started, that goroutine may be scheduled later
// then start and force `node.Up = false` in its defer function.
// This will make this test unreliable.
time.Sleep(time.Second)
waitForPeerEventPropagation()
err = sim.StartNode(id)
if err != nil {
t.Fatal(err)
}
if !n.Up {
if !n.Up() {
t.Error("node not started")
}
}
@ -377,7 +368,7 @@ func TestStartStopRandomNode(t *testing.T) {
if n == nil {
t.Fatal("node not found")
}
if n.Up {
if n.Up() {
t.Error("node not stopped")
}
@ -386,16 +377,7 @@ func TestStartStopRandomNode(t *testing.T) {
t.Fatal(err)
}
// Sleep here to ensure that Network.watchPeerEvents defer function
// has set the `node.Up = false` before we start the node again.
// p2p/simulations/network.go:215
//
// The same node is stopped and started again, and upon start
// watchPeerEvents is started in a goroutine. If the node is stopped
// and then very quickly started, that goroutine may be scheduled later
// then start and force `node.Up = false` in its defer function.
// This will make this test unreliable.
time.Sleep(time.Second)
waitForPeerEventPropagation()
idStarted, err := sim.StartRandomNode()
if err != nil {
@ -426,21 +408,12 @@ func TestStartStopRandomNodes(t *testing.T) {
if n == nil {
t.Fatal("node not found")
}
if n.Up {
if n.Up() {
t.Error("node not stopped")
}
}
// Sleep here to ensure that Network.watchPeerEvents defer function
// has set the `node.Up = false` before we start the node again.
// p2p/simulations/network.go:215
//
// The same node is stopped and started again, and upon start
// watchPeerEvents is started in a goroutine. If the node is stopped
// and then very quickly started, that goroutine may be scheduled later
// then start and force `node.Up = false` in its defer function.
// This will make this test unreliable.
time.Sleep(time.Second)
waitForPeerEventPropagation()
ids, err = sim.StartRandomNodes(2)
if err != nil {
@ -452,8 +425,20 @@ func TestStartStopRandomNodes(t *testing.T) {
if n == nil {
t.Fatal("node not found")
}
if !n.Up {
if !n.Up() {
t.Error("node not started")
}
}
}
func waitForPeerEventPropagation() {
// Sleep here to ensure that Network.watchPeerEvents defer function
// has set the `node.Up() = false` before we start the node again.
//
// The same node is stopped and started again, and upon start
// watchPeerEvents is started in a goroutine. If the node is stopped
// and then very quickly started, that goroutine may be scheduled later
// then start and force `node.Up() = false` in its defer function.
// This will make this test unreliable.
time.Sleep(1 * time.Second)
}

2
swarm/network/simulation/service.go
View File

@ -52,7 +52,7 @@ func (s *Simulation) Services(name string) (services map[enode.ID]node.Service)
nodes := s.Net.GetNodes()
services = make(map[enode.ID]node.Service)
for _, node := range nodes {
if !node.Up {
if !node.Up() {
continue
}
simNode, ok := node.Node.(*adapters.SimNode)

4
swarm/network/simulation/simulation_test.go
View File

@ -124,7 +124,7 @@ func TestClose(t *testing.T) {
var upNodeCount int
for _, n := range sim.Net.GetNodes() {
if n.Up {
if n.Up() {
upNodeCount++
}
}
@ -140,7 +140,7 @@ func TestClose(t *testing.T) {
upNodeCount = 0
for _, n := range sim.Net.GetNodes() {
if n.Up {
if n.Up() {
upNodeCount++
}
}

2
swarm/network/simulations/overlay_test.go
View File

@ -178,7 +178,7 @@ func watchSimEvents(net *simulations.Network, ctx context.Context, trigger chan
case ev := <-events:
//only catch node up events
if ev.Type == simulations.EventTypeNode {
if ev.Node.Up {
if ev.Node.Up() {
log.Debug("got node up event", "event", ev, "node", ev.Node.Config.ID)
select {
case trigger <- ev.Node.Config.ID:

13
swarm/state/dbstore.go
View File

@ -88,18 +88,15 @@ func (s *DBStore) Get(key string, i interface{}) (err error) {
// Put stores an object that implements Binary for a specific key.
func (s *DBStore) Put(key string, i interface{}) (err error) {
var bytes []byte
marshaler, ok := i.(encoding.BinaryMarshaler)
if !ok {
if bytes, err = json.Marshal(i); err != nil {
return err
}
} else {
if marshaler, ok := i.(encoding.BinaryMarshaler); ok {
if bytes, err = marshaler.MarshalBinary(); err != nil {
return err
}
} else {
if bytes, err = json.Marshal(i); err != nil {
return err
}
}
return s.db.Put([]byte(key), bytes, nil)
}