/usr/share/gocode/src/github.com/weaveworks/mesh/status.go is in golang-github-weaveworks-mesh-dev 0+git20161024.3dd75b1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 | package mesh
import (
"fmt"
"net"
)
// Status is our current state as a peer, as taken from a router.
// This is designed to be used as diagnostic information.
type Status struct {
Protocol string
ProtocolMinVersion int
ProtocolMaxVersion int
Encryption bool
PeerDiscovery bool
Name string
NickName string
Port int
Peers []PeerStatus
UnicastRoutes []unicastRouteStatus
BroadcastRoutes []broadcastRouteStatus
Connections []LocalConnectionStatus
TerminationCount int
Targets []string
OverlayDiagnostics interface{}
TrustedSubnets []string
}
// NewStatus returns a Status object, taken as a snapshot from the router.
func NewStatus(router *Router) *Status {
return &Status{
Protocol: Protocol,
ProtocolMinVersion: ProtocolMinVersion,
ProtocolMaxVersion: ProtocolMaxVersion,
Encryption: router.usingPassword(),
PeerDiscovery: router.PeerDiscovery,
Name: router.Ourself.Name.String(),
NickName: router.Ourself.NickName,
Port: router.Port,
Peers: makePeerStatusSlice(router.Peers),
UnicastRoutes: makeUnicastRouteStatusSlice(router.Routes),
BroadcastRoutes: makeBroadcastRouteStatusSlice(router.Routes),
Connections: makeLocalConnectionStatusSlice(router.ConnectionMaker),
TerminationCount: router.ConnectionMaker.terminationCount,
Targets: router.ConnectionMaker.Targets(false),
OverlayDiagnostics: router.Overlay.Diagnostics(),
TrustedSubnets: makeTrustedSubnetsSlice(router.TrustedSubnets),
}
}
// PeerStatus is the current state of a peer in the mesh.
type PeerStatus struct {
Name string
NickName string
UID PeerUID
ShortID PeerShortID
Version uint64
Connections []connectionStatus
}
// makePeerStatusSlice takes a snapshot of the state of peers.
func makePeerStatusSlice(peers *Peers) []PeerStatus {
var slice []PeerStatus
peers.forEach(func(peer *Peer) {
var connections []connectionStatus
if peer == peers.ourself.Peer {
for conn := range peers.ourself.getConnections() {
connections = append(connections, makeConnectionStatus(conn))
}
} else {
// Modifying peer.connections requires a write lock on
// Peers, and since we are holding a read lock (due to the
// ForEach), access without locking the peer is safe.
for _, conn := range peer.connections {
connections = append(connections, makeConnectionStatus(conn))
}
}
slice = append(slice, PeerStatus{
peer.Name.String(),
peer.NickName,
peer.UID,
peer.ShortID,
peer.Version,
connections,
})
})
return slice
}
type connectionStatus struct {
Name string
NickName string
Address string
Outbound bool
Established bool
}
func makeConnectionStatus(c Connection) connectionStatus {
return connectionStatus{
Name: c.Remote().Name.String(),
NickName: c.Remote().NickName,
Address: c.remoteTCPAddress(),
Outbound: c.isOutbound(),
Established: c.isEstablished(),
}
}
// unicastRouteStatus is the current state of an established unicast route.
type unicastRouteStatus struct {
Dest, Via string
}
// makeUnicastRouteStatusSlice takes a snapshot of the unicast routes in routes.
func makeUnicastRouteStatusSlice(r *routes) []unicastRouteStatus {
r.RLock()
defer r.RUnlock()
var slice []unicastRouteStatus
for dest, via := range r.unicast {
slice = append(slice, unicastRouteStatus{dest.String(), via.String()})
}
return slice
}
// BroadcastRouteStatus is the current state of an established broadcast route.
type broadcastRouteStatus struct {
Source string
Via []string
}
// makeBroadcastRouteStatusSlice takes a snapshot of the broadcast routes in routes.
func makeBroadcastRouteStatusSlice(r *routes) []broadcastRouteStatus {
r.RLock()
defer r.RUnlock()
var slice []broadcastRouteStatus
for source, via := range r.broadcast {
var hops []string
for _, hop := range via {
hops = append(hops, hop.String())
}
slice = append(slice, broadcastRouteStatus{source.String(), hops})
}
return slice
}
// LocalConnectionStatus is the current state of a physical connection to a peer.
type LocalConnectionStatus struct {
Address string
Outbound bool
State string
Info string
}
// makeLocalConnectionStatusSlice takes a snapshot of the active local
// connections in the ConnectionMaker.
func makeLocalConnectionStatusSlice(cm *connectionMaker) []LocalConnectionStatus {
resultChan := make(chan []LocalConnectionStatus, 0)
cm.actionChan <- func() bool {
var slice []LocalConnectionStatus
for conn := range cm.connections {
state := "pending"
if conn.isEstablished() {
state = "established"
}
lc, _ := conn.(*LocalConnection)
info := fmt.Sprintf("%-6v %v", lc.OverlayConn.DisplayName(), conn.Remote())
if lc.router.usingPassword() {
if lc.untrusted() {
info = fmt.Sprintf("%-11v %v", "encrypted", info)
} else {
info = fmt.Sprintf("%-11v %v", "unencrypted", info)
}
}
slice = append(slice, LocalConnectionStatus{conn.remoteTCPAddress(), conn.isOutbound(), state, info})
}
for address, target := range cm.targets {
add := func(state, info string) {
slice = append(slice, LocalConnectionStatus{address, true, state, info})
}
switch target.state {
case targetWaiting:
until := "never"
if !target.tryAfter.IsZero() {
until = target.tryAfter.String()
}
if target.lastError == nil { // shouldn't happen
add("waiting", "until: "+until)
} else {
add("failed", target.lastError.Error()+", retry: "+until)
}
case targetAttempting:
if target.lastError == nil {
add("connecting", "")
} else {
add("retrying", target.lastError.Error())
}
case targetConnected:
case targetSuspended:
}
}
resultChan <- slice
return false
}
return <-resultChan
}
// makeTrustedSubnetsSlice makes a human-readable copy of the trustedSubnets.
func makeTrustedSubnetsSlice(trustedSubnets []*net.IPNet) []string {
trustedSubnetStrs := []string{}
for _, trustedSubnet := range trustedSubnets {
trustedSubnetStrs = append(trustedSubnetStrs, trustedSubnet.String())
}
return trustedSubnetStrs
}
|