From e45126a4e905498d4d6b10400875eda9e8a0f5ba Mon Sep 17 00:00:00 2001
From: Hans Moog <hm@mkjc.net>
Date: Thu, 3 Oct 2019 19:06:56 +0200
Subject: [PATCH] Feat: added new checking logic for incoming heartbeats
---
go.mod | 31 ++-
go.sum | 289 ++++++++++++++++++++
packages/ca/constants.go | 1 +
packages/ca/heartbeat/proto/heartbeat.proto | 3 +-
packages/ca/heartbeat_chain.go | 16 ++
packages/ca/heartbeat_manager.go | 23 +-
packages/ca/heartbeat_manager_events.go | 15 +
packages/ca/heartbeat_manager_test.go | 27 ++
packages/ca/neighbor_manager.go | 139 ++++++++--
packages/ca/neighbor_manager_events.go | 10 +
packages/ca/neighbor_manager_options.go | 5 +
packages/ca/statement_chain.go | 68 ++++-
packages/ca/statement_chain_events.go | 14 +
13 files changed, 601 insertions(+), 40 deletions(-)
create mode 100644 packages/ca/heartbeat_chain.go
create mode 100644 packages/ca/heartbeat_manager_events.go
create mode 100644 packages/ca/neighbor_manager_events.go
create mode 100644 packages/ca/neighbor_manager_options.go
create mode 100644 packages/ca/statement_chain_events.go
diff --git a/go.mod b/go.mod
index 8e94e41a..e019f66c 100644
--- a/go.mod
+++ b/go.mod
@@ -7,22 +7,39 @@ require (
github.com/ethereum/go-ethereum v1.9.1
github.com/gdamore/tcell v1.2.0
github.com/go-zeromq/zmq4 v0.5.0
+ github.com/gogo/protobuf v1.3.0 // indirect
github.com/golang/protobuf v1.3.2
+ github.com/golangci/gocyclo v0.0.0-20180528144436-0a533e8fa43d // indirect
+ github.com/golangci/gofmt v0.0.0-20190930125516-244bba706f1a // indirect
+ github.com/golangci/golangci-lint v1.19.1 // indirect
+ github.com/golangci/revgrep v0.0.0-20180812185044-276a5c0a1039 // indirect
github.com/google/open-location-code/go v0.0.0-20190723034300-2c7115db77a3
github.com/gorilla/websocket v1.4.0
+ github.com/gostaticanalysis/analysisutil v0.0.3 // indirect
github.com/iotaledger/iota.go v1.0.0-beta.7
- github.com/kr/pretty v0.1.0 // indirect
+ github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
github.com/kr/text v0.1.0
github.com/labstack/echo v3.3.10+incompatible
github.com/labstack/gommon v0.2.9 // indirect
+ github.com/magiconair/properties v1.8.1 // indirect
+ github.com/matoous/godox v0.0.0-20190911065817-5d6d842e92eb // indirect
+ github.com/mattn/go-colorable v0.1.4 // indirect
+ github.com/mattn/go-isatty v0.0.9 // indirect
+ github.com/pelletier/go-toml v1.4.0 // indirect
github.com/pkg/errors v0.8.1
github.com/rivo/tview v0.0.0-20190721135419-23dc8a0944e4
github.com/rivo/uniseg v0.1.0 // indirect
- github.com/stretchr/testify v1.3.0
+ github.com/securego/gosec v0.0.0-20191002120514-e680875ea14d // indirect
+ github.com/spf13/afero v1.2.2 // indirect
+ github.com/spf13/jwalterweatherman v1.1.0 // indirect
+ github.com/stretchr/testify v1.4.0
+ github.com/timakin/bodyclose v0.0.0-20190930140734-f7f2e9bca95e // indirect
github.com/tonnerre/golang-text v0.0.0-20130925195846-048ed3d792f7 // indirect
- golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4
- golang.org/x/net v0.0.0-20190724013045-ca1201d0de80
- golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e // indirect
- golang.org/x/text v0.3.2 // indirect
- gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
+ golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392
+ golang.org/x/net v0.0.0-20190923162816-aa69164e4478
+ golang.org/x/sys v0.0.0-20191002091554-b397fe3ad8ed // indirect
+ golang.org/x/tools v0.0.0-20191002234911-9ade4c73f2af // indirect
+ gopkg.in/yaml.v2 v2.2.4 // indirect
+ mvdan.cc/unparam v0.0.0-20190917161559-b83a221c10a2 // indirect
+ sourcegraph.com/sqs/pbtypes v1.0.0 // indirect
)
diff --git a/go.sum b/go.sum
index 4321f8c8..f310ccd3 100644
--- a/go.sum
+++ b/go.sum
@@ -1,30 +1,48 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
github.com/AndreasBriese/bbloom v0.0.0-20190306092124-e2d15f34fcf9 h1:HD8gA2tkByhMAwYaFAX9w2l7vxvBQ5NMoxDrkhqhtn4=
github.com/AndreasBriese/bbloom v0.0.0-20190306092124-e2d15f34fcf9/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/DATA-DOG/go-sqlmock v1.3.3 h1:CWUqKXe0s8A2z6qCgkP4Kru7wC11YoAnoupUKFDnH08=
github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/OpenPeeDeeP/depguard v1.0.1 h1:VlW4R6jmBIv3/u1JNlawEvJMM4J+dPORPaZasQee8Us=
+github.com/OpenPeeDeeP/depguard v1.0.1/go.mod h1:xsIw86fROiiwelg+jB2uM9PiKihMMmUx/1V+TNhjQvM=
+github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/apsdehal/go-logger v0.0.0-20190506062552-f85330a4b532/go.mod h1:U3/8D6R9+bVpX0ORZjV+3mU9pQ86m7h1lESgJbXNvXA=
github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
github.com/beevik/ntp v0.2.0/go.mod h1:hIHWr+l3+/clUnF44zdK+CWW7fO8dR5cIylAQ76NRpg=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
+github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
+github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dgraph-io/badger v1.5.4/go.mod h1:VZxzAIRPHRVNRKRo6AXrX9BJegn6il06VMTZVJYCIjQ=
github.com/dgraph-io/badger v1.6.0 h1:DshxFxZWXUcO0xX476VJC07Xsr6ZCBVRHKZ93Oh7Evo=
github.com/dgraph-io/badger v1.6.0/go.mod h1:zwt7syl517jmP8s94KqSxTlM6IMsdhYy6psNgSztDR4=
+github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
github.com/dgryski/go-farm v0.0.0-20190323231341-8198c7b169ec/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 h1:tdlZCpZ/P9DhczCTSixgIKmwPv6+wP5DGjqLYw5SUiA=
github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
+github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
github.com/ethereum/go-ethereum v1.9.1 h1:MrdTRvKIa3apdx6NW1azzSgl8BQB1eTBVSUmFhuztaU=
github.com/ethereum/go-ethereum v1.9.1/go.mod h1:PwpWDrCLZrV+tfrhqqF6kPknbISMHaJv9Ln3kPCZLwY=
+github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
+github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
@@ -32,122 +50,393 @@ github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo
github.com/gdamore/tcell v1.1.2/go.mod h1:h3kq4HO9l2On+V9ed8w8ewqQEmGCSSHOgQ+2h8uzurE=
github.com/gdamore/tcell v1.2.0 h1:ikixzsxc8K8o3V2/CEmyoEW8mJZaNYQQ3NP3VIQdUe4=
github.com/gdamore/tcell v1.2.0/go.mod h1:Hjvr+Ofd+gLglo7RYKxxnzCBmev3BzsS67MebKS4zMM=
+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/go-critic/go-critic v0.3.5-0.20190904082202-d79a9f0c64db h1:GYXWx7Vr3+zv833u+8IoXbNnQY0AdXsxAgI0kX7xcwA=
+github.com/go-critic/go-critic v0.3.5-0.20190904082202-d79a9f0c64db/go.mod h1:+sE8vrLDS2M0pZkBk0wy6+nLdKexVDrl/jBqQOTDThA=
+github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
+github.com/go-lintpack/lintpack v0.5.2 h1:DI5mA3+eKdWeJ40nU4d6Wc26qmdG8RCi/btYq0TuRN0=
+github.com/go-lintpack/lintpack v0.5.2/go.mod h1:NwZuYi2nUHho8XEIZ6SIxihrnPoqBTDqfpXvXAN0sXM=
+github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
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github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
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diff --git a/packages/ca/constants.go b/packages/ca/constants.go
index c770ef64..d995e27d 100644
--- a/packages/ca/constants.go
+++ b/packages/ca/constants.go
@@ -2,4 +2,5 @@ package ca
const (
MAX_STATEMENT_TIMEOUT = uint64(5000)
+ MAX_NEIGHBOR_COUNT = 8
)
diff --git a/packages/ca/heartbeat/proto/heartbeat.proto b/packages/ca/heartbeat/proto/heartbeat.proto
index f5a63eb2..afce2528 100644
--- a/packages/ca/heartbeat/proto/heartbeat.proto
+++ b/packages/ca/heartbeat/proto/heartbeat.proto
@@ -8,6 +8,7 @@ message HeartBeat {
string nodeId = 1;
OpinionStatement mainStatement = 2;
repeated OpinionStatement neighborStatements = 3;
- bytes signature = 4;
+ repeated string removedNeighbors = 4;
+ bytes signature = 5;
}
diff --git a/packages/ca/heartbeat_chain.go b/packages/ca/heartbeat_chain.go
new file mode 100644
index 00000000..ed90265d
--- /dev/null
+++ b/packages/ca/heartbeat_chain.go
@@ -0,0 +1,16 @@
+package ca
+
+import (
+ "github.com/iotaledger/goshimmer/packages/ca/heartbeat"
+)
+
+type HeartbeatChain struct {
+ missingHeartbeats map[string]bool
+ heartbeats map[string]*heartbeat.Heartbeat
+}
+
+func NewHeartbeatChain() *HeartbeatChain {
+ return &HeartbeatChain{
+ heartbeats: make(map[string]*heartbeat.Heartbeat),
+ }
+}
diff --git a/packages/ca/heartbeat_manager.go b/packages/ca/heartbeat_manager.go
index c00fd126..16afa1db 100644
--- a/packages/ca/heartbeat_manager.go
+++ b/packages/ca/heartbeat_manager.go
@@ -4,6 +4,8 @@ import (
"sync"
"time"
+ "github.com/iotaledger/goshimmer/packages/events"
+
"github.com/iotaledger/goshimmer/packages/identity"
"github.com/iotaledger/goshimmer/packages/ca/heartbeat"
@@ -12,6 +14,8 @@ import (
)
type HeartbeatManager struct {
+ Events *HeartbeatManagerEvents
+
identity *identity.Identity
options *HeartbeatManagerOptions
statementChain *StatementChain
@@ -23,6 +27,11 @@ type HeartbeatManager struct {
func NewHeartbeatManager(identity *identity.Identity, options ...HeartbeatManagerOption) *HeartbeatManager {
return &HeartbeatManager{
+ Events: &HeartbeatManagerEvents{
+ AddNeighbor: events.NewEvent(IdentityNeighborManagerCaller),
+ RemoveNeighbor: events.NewEvent(IdentityNeighborManagerCaller),
+ },
+
identity: identity,
options: DEFAULT_OPTIONS.Override(options...),
@@ -34,7 +43,11 @@ func NewHeartbeatManager(identity *identity.Identity, options ...HeartbeatManage
func (heartbeatManager *HeartbeatManager) AddNeighbor(neighborIdentity *identity.Identity) {
if _, exists := heartbeatManager.neighborManagers[neighborIdentity.StringIdentifier]; !exists {
- heartbeatManager.neighborManagers[neighborIdentity.StringIdentifier] = NewNeighborManager()
+ newNeighborManager := NewNeighborManager()
+
+ heartbeatManager.neighborManagers[neighborIdentity.StringIdentifier] = newNeighborManager
+
+ heartbeatManager.Events.AddNeighbor.Trigger(neighborIdentity, newNeighborManager)
}
}
@@ -116,6 +129,14 @@ func (heartbeatManager *HeartbeatManager) generateMainStatement() (result *heart
}
func (heartbeatManager *HeartbeatManager) generateNeighborStatements() (result map[string][]*heartbeat.OpinionStatement, err errors.IdentifiableError) {
+ result = make(map[string][]*heartbeat.OpinionStatement)
+
+ for neighborId, neighborManager := range heartbeatManager.neighborManagers {
+ if lastAppliedStatements := neighborManager.GenerateHeartbeatStatements(); len(lastAppliedStatements) >= 1 {
+ result[neighborId] = lastAppliedStatements
+ }
+ }
+
return
}
diff --git a/packages/ca/heartbeat_manager_events.go b/packages/ca/heartbeat_manager_events.go
new file mode 100644
index 00000000..01179eea
--- /dev/null
+++ b/packages/ca/heartbeat_manager_events.go
@@ -0,0 +1,15 @@
+package ca
+
+import (
+ "github.com/iotaledger/goshimmer/packages/events"
+ "github.com/iotaledger/goshimmer/packages/identity"
+)
+
+type HeartbeatManagerEvents struct {
+ AddNeighbor *events.Event
+ RemoveNeighbor *events.Event
+}
+
+func IdentityNeighborManagerCaller(handler interface{}, params ...interface{}) {
+ handler.(func(*identity.Identity, *NeighborManager))(params[0].(*identity.Identity), params[1].(*NeighborManager))
+}
diff --git a/packages/ca/heartbeat_manager_test.go b/packages/ca/heartbeat_manager_test.go
index 077b9ab9..5b90540a 100644
--- a/packages/ca/heartbeat_manager_test.go
+++ b/packages/ca/heartbeat_manager_test.go
@@ -5,6 +5,8 @@ import (
"fmt"
"testing"
+ "github.com/iotaledger/goshimmer/packages/events"
+
"github.com/iotaledger/goshimmer/packages/identity"
)
@@ -37,6 +39,16 @@ func TestHeartbeatManager_GenerateHeartbeat(t *testing.T) {
fmt.Println(heartbeat1)
heartbeatManager2 := NewHeartbeatManager(neighborIdentity)
+
+ heartbeatManager2.Events.AddNeighbor.Attach(events.NewClosure(func(neighborIdentity *identity.Identity, neighborManager *NeighborManager) {
+ neighborManager.Events.ChainReset.Attach(events.NewClosure(func() {
+ fmt.Println("RESET")
+ }))
+ }))
+ heartbeatManager2.Events.RemoveNeighbor.Attach(events.NewClosure(func(neighborIdentity *identity.Identity, neighborManager *NeighborManager) {
+ fmt.Println("Rest")
+ }))
+
heartbeatManager2.AddNeighbor(ownIdentity)
err = heartbeatManager2.ApplyHeartbeat(heartbeat1)
if err != nil {
@@ -52,5 +64,20 @@ func TestHeartbeatManager_GenerateHeartbeat(t *testing.T) {
return
}
+ if err = heartbeatManager1.ApplyHeartbeat(heartbeat2); err != nil {
+ t.Error(err)
+
+ return
+ }
+
fmt.Println(heartbeat2)
+
+ heartbeat3, err := heartbeatManager1.GenerateHeartbeat()
+ if err != nil {
+ t.Error(err)
+
+ return
+ }
+
+ fmt.Println(heartbeat3)
}
diff --git a/packages/ca/neighbor_manager.go b/packages/ca/neighbor_manager.go
index afea44bc..900a905d 100644
--- a/packages/ca/neighbor_manager.go
+++ b/packages/ca/neighbor_manager.go
@@ -2,22 +2,35 @@ package ca
import (
"bytes"
+ "sort"
"strconv"
+ "github.com/iotaledger/goshimmer/packages/events"
+
"github.com/iotaledger/goshimmer/packages/ca/heartbeat"
"github.com/iotaledger/goshimmer/packages/errors"
)
type NeighborManager struct {
- options *NeighborManagerOptions
- mainChain *StatementChain
- neighborChains map[string]*StatementChain
+ Events NeighborManagerEvents
+ options *NeighborManagerOptions
+ lastAppliedHeartbeat *heartbeat.Heartbeat
+ missingHeartbeats map[string]bool
+ pendingHeartbeats map[string]*heartbeat.Heartbeat
+ heartbeats map[string]*heartbeat.Heartbeat
+ mainChain *StatementChain
+ neighborChains map[string]*StatementChain
+ previouslyReportedHeartbeatHash []byte
}
func NewNeighborManager(options ...NeighborManagerOption) *NeighborManager {
return &NeighborManager{
- options: (&NeighborManagerOptions{}).Override(options...),
+ Events: NeighborManagerEvents{
+ ChainReset: events.NewEvent(events.CallbackCaller),
+ StatementMissing: events.NewEvent(HashCaller),
+ },
+ options: DEFAULT_NEIGHBOR_MANAGER_OPTIONS.Override(options...),
mainChain: NewStatementChain(),
neighborChains: make(map[string]*StatementChain),
}
@@ -43,48 +56,118 @@ func (neighborManager *NeighborManager) ApplyHeartbeat(heartbeat *heartbeat.Hear
// endregion ///////////////////////////////////////////////////////////////////////////////////////////////////////
- // region check if heartbeat is semantically correct ///////////////////////////////////////////////////////////////
+ // region check if heartbeat is solid //////////////////////////////////////////////////////////////////////////////
- // check if referenced main statement is missing
- if previousStatementHash := mainStatement.GetPreviousStatementHash(); len(previousStatementHash) != 0 {
- lastAppliedMainStatement := neighborManager.mainChain.GetLastAppliedStatement()
- if lastAppliedMainStatement != nil && !bytes.Equal(lastAppliedMainStatement.GetHash(), previousStatementHash) {
- if (mainStatement.GetTime() - lastAppliedMainStatement.GetTime()) < MAX_STATEMENT_TIMEOUT {
- // request missing heartbeat
- neighborManager.mainChain.AddStatement(mainStatement)
+ previousHeartbeatHash := mainStatement.GetPreviousStatementHash()
+ if len(previousHeartbeatHash) == 0 {
+ neighborManager.Reset()
+ } else if neighborManager.lastAppliedHeartbeat != nil && !bytes.Equal(neighborManager.lastAppliedHeartbeat.GetMainStatement().GetHash(), previousHeartbeatHash) {
- return
- } else {
- neighborManager.Reset()
- }
+ }
+
+ // endregion ///////////////////////////////////////////////////////////////////////////////////////////////////////
+
+ // region mark idle neighbors //////////////////////////////////////////////////////////////////////////////////////
+
+ existingNeighbors := make(map[string]*StatementChain)
+ for neighborId, neighborChain := range neighborManager.neighborChains {
+ existingNeighbors[neighborId] = neighborChain
+ }
+
+ for neighborId := range neighborStatements {
+ if neighborStatementChain, neighborExists := existingNeighbors[neighborId]; neighborExists {
+ neighborStatementChain.ResetIdleCounter()
+
+ delete(existingNeighbors, neighborId)
}
- } else {
- neighborManager.mainChain.AddStatement(mainStatement)
}
- // check if referenced neighbor statements are missing
+ for _, neighborStatementChain := range existingNeighbors {
+ neighborStatementChain.IncreaseIdleCounter()
+ }
+
+ // endregion ///////////////////////////////////////////////////////////////////////////////////////////////////////
+
+ // region add received statements //////////////////////////////////////////////////////////////////////////////////
+
+ applyStatements := neighborManager.mainChain.AddStatement(mainStatement)
+
+ // add neighbor statements to chain
for neighborId, statementsOfNeighbor := range neighborStatements {
neighborChain, exists := neighborManager.neighborChains[neighborId]
- if exists {
+ if !exists {
+ neighborChain = neighborManager.addNeighborChain(neighborId)
+ }
+
+ if neighborChain != nil {
for _, neighborStatement := range statementsOfNeighbor {
- lastAppliedNeighborStatement := neighborChain.GetLastAppliedStatement()
- if lastAppliedNeighborStatement != nil && !bytes.Equal(lastAppliedNeighborStatement.GetHash(), neighborStatement.GetPreviousStatementHash()) {
- return ErrMalformedHeartbeat.Derive("missing neighbor statement")
- }
+ neighborChain.AddStatement(neighborStatement)
}
- } else {
- // 1. check if new slot is available (not full || statement of neighbor with last connection)
}
}
- // check if neighbor statements are a valid justification for main statement
- // sthsth
+ // endregion ///////////////////////////////////////////////////////////////////////////////////////////////////////
+
+ // region apply pending statements /////////////////////////////////////////////////////////////////////////////////
+
+ if applyStatements {
+ neighborManager.mainChain.lastAppliedStatement = mainStatement
+ }
// endregion ///////////////////////////////////////////////////////////////////////////////////////////////////////
return
}
+func (neighborManager *NeighborManager) GenerateHeartbeatStatements() (result []*heartbeat.OpinionStatement) {
+ result = make([]*heartbeat.OpinionStatement, 0)
+
+ if lastAppliedStatement := neighborManager.mainChain.GetLastAppliedStatement(); lastAppliedStatement != nil {
+ currentStatement := lastAppliedStatement
+ for currentStatement != nil && !bytes.Equal(currentStatement.GetHash(), neighborManager.previouslyReportedHeartbeatHash) {
+ result = append([]*heartbeat.OpinionStatement{currentStatement}, result...)
+
+ currentStatement = neighborManager.mainChain.GetStatement(currentStatement.GetPreviousStatementHash())
+ }
+
+ neighborManager.previouslyReportedHeartbeatHash = lastAppliedStatement.GetHash()
+ }
+
+ return
+}
+
+func (neighborManager *NeighborManager) addNeighborChain(neighborId string) *StatementChain {
+ if len(neighborManager.neighborChains) < MAX_NEIGHBOR_COUNT {
+ newNeighborChain := NewStatementChain()
+ neighborManager.neighborChains[neighborId] = newNeighborChain
+
+ return newNeighborChain
+ }
+
+ neighbors := make([]string, 0, len(neighborManager.neighborChains))
+ for neighborId := range neighborManager.neighborChains {
+ neighbors = append(neighbors, neighborId)
+ }
+
+ sort.Slice(neighbors, func(i, j int) bool {
+ neighborChainI := neighborManager.neighborChains[neighbors[i]]
+ neighborChainJ := neighborManager.neighborChains[neighbors[i]]
+
+ switch true {
+ case neighborChainI.GetIdleCounter() < neighborChainJ.GetIdleCounter():
+ return true
+ default:
+ return false
+
+ }
+ })
+ newNeighborChain := NewStatementChain()
+
+ neighborManager.neighborChains[neighborId] = newNeighborChain
+
+ return newNeighborChain
+}
+
type NeighborManagerOptions struct {
maxNeighborChains int
}
diff --git a/packages/ca/neighbor_manager_events.go b/packages/ca/neighbor_manager_events.go
new file mode 100644
index 00000000..753b80fc
--- /dev/null
+++ b/packages/ca/neighbor_manager_events.go
@@ -0,0 +1,10 @@
+package ca
+
+import (
+ "github.com/iotaledger/goshimmer/packages/events"
+)
+
+type NeighborManagerEvents struct {
+ ChainReset *events.Event
+ StatementMissing *events.Event
+}
diff --git a/packages/ca/neighbor_manager_options.go b/packages/ca/neighbor_manager_options.go
new file mode 100644
index 00000000..3e23aff0
--- /dev/null
+++ b/packages/ca/neighbor_manager_options.go
@@ -0,0 +1,5 @@
+package ca
+
+var DEFAULT_NEIGHBOR_MANAGER_OPTIONS = &NeighborManagerOptions{
+ maxNeighborChains: 8,
+}
diff --git a/packages/ca/statement_chain.go b/packages/ca/statement_chain.go
index 7333bc40..c04af8cf 100644
--- a/packages/ca/statement_chain.go
+++ b/packages/ca/statement_chain.go
@@ -1,25 +1,87 @@
package ca
import (
+ "bytes"
+
+ "github.com/iotaledger/goshimmer/packages/typeutils"
+
+ "github.com/iotaledger/goshimmer/packages/events"
+
"github.com/iotaledger/goshimmer/packages/ca/heartbeat"
"github.com/iotaledger/goshimmer/packages/errors"
)
type StatementChain struct {
+ Events StatementChainEvents
+
+ statements map[string]*heartbeat.OpinionStatement
+ missingStatements map[string]bool
+ idleCounter int
lastAppliedStatement *heartbeat.OpinionStatement
lastReceivedStatement *heartbeat.OpinionStatement
}
func NewStatementChain() *StatementChain {
- return &StatementChain{}
+ return &StatementChain{
+ Events: StatementChainEvents{
+ Reset: events.NewEvent(events.CallbackCaller),
+ StatementMissing: events.NewEvent(HashCaller),
+ },
+ statements: make(map[string]*heartbeat.OpinionStatement),
+ missingStatements: make(map[string]bool),
+ }
}
-func (statementChain *StatementChain) AddStatement(statement *heartbeat.OpinionStatement) {
+func (statementChain *StatementChain) IncreaseIdleCounter() {
+ statementChain.idleCounter++
+}
+func (statementChain *StatementChain) ResetIdleCounter() {
+ statementChain.idleCounter = 0
}
-func (statementChain *StatementChain) Reset() {
+func (statementChain *StatementChain) GetIdleCounter() int {
+ return statementChain.idleCounter
+}
+
+func (statementChain *StatementChain) AddStatement(statement *heartbeat.OpinionStatement) bool {
+ previousStatementHash := statement.GetPreviousStatementHash()
+ lastAppliedMainStatement := statementChain.lastAppliedStatement
+
+ if len(previousStatementHash) == 0 {
+ statementChain.Reset()
+ } else if lastAppliedMainStatement != nil && !bytes.Equal(lastAppliedMainStatement.GetHash(), previousStatementHash) {
+ if (statement.GetTime() - lastAppliedMainStatement.GetTime()) >= MAX_STATEMENT_TIMEOUT {
+ statementChain.Reset()
+ } else if !statementChain.StatementExists(previousStatementHash) {
+ statementChain.addMissingStatement(previousStatementHash)
+ statementChain.addStatement(statement)
+
+ return false
+ }
+ }
+
+ statementChain.addStatement(statement)
+ return true
+}
+
+func (statementChain *StatementChain) addStatement(statement *heartbeat.OpinionStatement) {
+ statementChain.statements[typeutils.BytesToString(statement.GetHash())] = statement
+}
+
+func (statementChain *StatementChain) addMissingStatement(statementHash []byte) {
+ statementChain.missingStatements[typeutils.BytesToString(statementHash)] = true
+
+ statementChain.Events.StatementMissing.Trigger(statementHash)
+}
+
+func (statementChain *StatementChain) GetStatement(statementHash []byte) *heartbeat.OpinionStatement {
+ return statementChain.statements[typeutils.BytesToString(statementHash)]
+}
+
+func (statementChain *StatementChain) Reset() {
+ statementChain.Events.Reset.Trigger()
}
func (statementChain *StatementChain) Apply(statement *heartbeat.OpinionStatement) (err errors.IdentifiableError) {
diff --git a/packages/ca/statement_chain_events.go b/packages/ca/statement_chain_events.go
new file mode 100644
index 00000000..21ec16ee
--- /dev/null
+++ b/packages/ca/statement_chain_events.go
@@ -0,0 +1,14 @@
+package ca
+
+import (
+ "github.com/iotaledger/goshimmer/packages/events"
+)
+
+type StatementChainEvents struct {
+ Reset *events.Event
+ StatementMissing *events.Event
+}
+
+func HashCaller(handler interface{}, params ...interface{}) {
+ handler.(func([]byte))(params[0].([]byte))
+}
--
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