mirror of
https://github.com/weaveworks/scope.git
synced 2026-05-01 23:07:40 +00:00
f012c23ca1
* Sentence cased text everywhere Follows Weave Cloud's direction of sentence case on most things. * More space between sorter caret and label * Use full topology name for table header
430 lines
14 KiB
Go
430 lines
14 KiB
Go
package overlay
|
|
|
|
import (
|
|
"fmt"
|
|
"regexp"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/weaveworks/common/backoff"
|
|
"github.com/weaveworks/scope/common/weave"
|
|
"github.com/weaveworks/scope/probe/docker"
|
|
"github.com/weaveworks/scope/probe/host"
|
|
"github.com/weaveworks/scope/report"
|
|
)
|
|
|
|
// Keys for use in Node
|
|
const (
|
|
WeavePeerName = "weave_peer_name"
|
|
WeavePeerNickName = "weave_peer_nick_name"
|
|
WeaveDNSHostname = "weave_dns_hostname"
|
|
WeaveMACAddress = "weave_mac_address"
|
|
WeaveVersion = "weave_version"
|
|
WeaveEncryption = "weave_encryption"
|
|
WeaveProtocol = "weave_protocol"
|
|
WeavePeerDiscovery = "weave_peer_discovery"
|
|
WeaveTargetCount = "weave_target_count"
|
|
WeaveConnectionCount = "weave_connection_count"
|
|
WeavePeerCount = "weave_peer_count"
|
|
WeaveTrustedSubnets = "weave_trusted_subnet_count"
|
|
WeaveIPAMTableID = "weave_ipam_table"
|
|
WeaveIPAMStatus = "weave_ipam_status"
|
|
WeaveIPAMRange = "weave_ipam_range"
|
|
WeaveIPAMDefaultSubnet = "weave_ipam_default_subnet"
|
|
WeaveDNSTableID = "weave_dns_table"
|
|
WeaveDNSDomain = "weave_dns_domain"
|
|
WeaveDNSUpstream = "weave_dns_upstream"
|
|
WeaveDNSTTL = "weave_dns_ttl"
|
|
WeaveDNSEntryCount = "weave_dns_entry_count"
|
|
WeaveProxyTableID = "weave_proxy_table"
|
|
WeaveProxyStatus = "weave_proxy_status"
|
|
WeaveProxyAddress = "weave_proxy_address"
|
|
WeavePluginTableID = "weave_plugin_table"
|
|
WeavePluginStatus = "weave_plugin_status"
|
|
WeavePluginDriver = "weave_plugin_driver"
|
|
WeaveConnectionsConnection = "weave_connection_connection"
|
|
WeaveConnectionsState = "weave_connection_state"
|
|
WeaveConnectionsInfo = "weave_connection_info"
|
|
WeaveConnectionsTablePrefix = "weave_connections_table_"
|
|
WeaveConnectionsMulticolumnTablePrefix = "weave_connections_multicolumn_table_"
|
|
)
|
|
|
|
var (
|
|
containerNotRunningRE = regexp.MustCompile(`Container .* is not running\n`)
|
|
|
|
containerMetadata = report.MetadataTemplates{
|
|
WeaveMACAddress: {ID: WeaveMACAddress, Label: "Weave MAC", From: report.FromLatest, Priority: 17},
|
|
WeaveDNSHostname: {ID: WeaveDNSHostname, Label: "Weave DNS Name", From: report.FromLatest, Priority: 18},
|
|
}
|
|
|
|
weaveMetadata = report.MetadataTemplates{
|
|
WeaveVersion: {ID: WeaveVersion, Label: "Version", From: report.FromLatest, Priority: 1},
|
|
WeaveProtocol: {ID: WeaveProtocol, Label: "Protocol", From: report.FromLatest, Priority: 2},
|
|
WeavePeerName: {ID: WeavePeerName, Label: "Name", From: report.FromLatest, Priority: 3},
|
|
WeaveEncryption: {ID: WeaveEncryption, Label: "Encryption", From: report.FromLatest, Priority: 4},
|
|
WeavePeerDiscovery: {ID: WeavePeerDiscovery, Label: "Peer discovery", From: report.FromLatest, Priority: 5},
|
|
WeaveTargetCount: {ID: WeaveTargetCount, Label: "Targets", From: report.FromLatest, Priority: 6},
|
|
WeaveConnectionCount: {ID: WeaveConnectionCount, Label: "Connections", From: report.FromLatest, Priority: 8},
|
|
WeavePeerCount: {ID: WeavePeerCount, Label: "Peers", From: report.FromLatest, Priority: 7},
|
|
WeaveTrustedSubnets: {ID: WeaveTrustedSubnets, Label: "Trusted subnets", From: report.FromSets, Priority: 9},
|
|
}
|
|
|
|
weaveTableTemplates = report.TableTemplates{
|
|
WeaveIPAMTableID: {
|
|
ID: WeaveIPAMTableID,
|
|
Label: "IPAM",
|
|
Type: report.PropertyListType,
|
|
FixedRows: map[string]string{
|
|
WeaveIPAMStatus: "Status",
|
|
WeaveIPAMRange: "Range",
|
|
WeaveIPAMDefaultSubnet: "Default subnet",
|
|
},
|
|
},
|
|
WeaveDNSTableID: {
|
|
ID: WeaveDNSTableID,
|
|
Label: "DNS",
|
|
Type: report.PropertyListType,
|
|
FixedRows: map[string]string{
|
|
WeaveDNSDomain: "Domain",
|
|
WeaveDNSUpstream: "Upstream",
|
|
WeaveDNSTTL: "TTL",
|
|
WeaveDNSEntryCount: "Entries",
|
|
},
|
|
},
|
|
WeaveProxyTableID: {
|
|
ID: WeaveProxyTableID,
|
|
Label: "Proxy",
|
|
Type: report.PropertyListType,
|
|
FixedRows: map[string]string{
|
|
WeaveProxyStatus: "Status",
|
|
WeaveProxyAddress: "Address",
|
|
},
|
|
},
|
|
WeavePluginTableID: {
|
|
ID: WeavePluginTableID,
|
|
Label: "Plugin",
|
|
Type: report.PropertyListType,
|
|
FixedRows: map[string]string{
|
|
WeavePluginStatus: "Status",
|
|
WeavePluginDriver: "Driver name",
|
|
},
|
|
},
|
|
WeaveConnectionsMulticolumnTablePrefix: {
|
|
ID: WeaveConnectionsMulticolumnTablePrefix,
|
|
Type: report.MulticolumnTableType,
|
|
Prefix: WeaveConnectionsMulticolumnTablePrefix,
|
|
Columns: []report.Column{
|
|
{
|
|
ID: WeaveConnectionsConnection,
|
|
Label: "Connections",
|
|
},
|
|
{
|
|
ID: WeaveConnectionsState,
|
|
Label: "State",
|
|
},
|
|
{
|
|
ID: WeaveConnectionsInfo,
|
|
Label: "Info",
|
|
},
|
|
},
|
|
},
|
|
// Kept for backward-compatibility.
|
|
WeaveConnectionsTablePrefix: {
|
|
ID: WeaveConnectionsTablePrefix,
|
|
Label: "Connections",
|
|
Type: report.PropertyListType,
|
|
Prefix: WeaveConnectionsTablePrefix,
|
|
},
|
|
}
|
|
)
|
|
|
|
// Weave represents a single Weave router, presumably on the same host
|
|
// as the probe. It is both a Reporter and a Tagger: it produces an Overlay
|
|
// topology, and (in theory) can tag existing topologies with foreign keys to
|
|
// overlay -- though I'm not sure what that would look like in practice right
|
|
// now.
|
|
type Weave struct {
|
|
client weave.Client
|
|
hostID string
|
|
|
|
mtx sync.RWMutex
|
|
statusCache weave.Status
|
|
psCache map[string]weave.PSEntry
|
|
|
|
backoff backoff.Interface
|
|
psBackoff backoff.Interface
|
|
}
|
|
|
|
// NewWeave returns a new Weave tagger based on the Weave router at
|
|
// address. The address should be an IP or FQDN, no port.
|
|
func NewWeave(hostID string, client weave.Client) (*Weave, error) {
|
|
w := &Weave{
|
|
client: client,
|
|
hostID: hostID,
|
|
psCache: map[string]weave.PSEntry{},
|
|
}
|
|
|
|
w.backoff = backoff.New(w.status, "collecting weave status")
|
|
w.backoff.SetInitialBackoff(5 * time.Second)
|
|
go w.backoff.Start()
|
|
|
|
w.psBackoff = backoff.New(w.ps, "collecting weave ps")
|
|
w.psBackoff.SetInitialBackoff(10 * time.Second)
|
|
go w.psBackoff.Start()
|
|
|
|
return w, nil
|
|
}
|
|
|
|
// Name of this reporter/tagger/ticker, for metrics gathering
|
|
func (*Weave) Name() string { return "Weave" }
|
|
|
|
// Stop gathering weave ps output.
|
|
func (w *Weave) Stop() {
|
|
w.backoff.Stop()
|
|
w.psBackoff.Stop()
|
|
}
|
|
|
|
func (w *Weave) ps() (bool, error) {
|
|
psEntriesByPrefix, err := w.client.PS()
|
|
|
|
w.mtx.Lock()
|
|
defer w.mtx.Unlock()
|
|
|
|
if err != nil {
|
|
w.psCache = map[string]weave.PSEntry{}
|
|
} else {
|
|
w.psCache = psEntriesByPrefix
|
|
}
|
|
return false, err
|
|
}
|
|
|
|
func (w *Weave) status() (bool, error) {
|
|
status, err := w.client.Status()
|
|
|
|
w.mtx.Lock()
|
|
defer w.mtx.Unlock()
|
|
|
|
if err != nil {
|
|
w.statusCache = weave.Status{}
|
|
} else {
|
|
w.statusCache = status
|
|
}
|
|
return false, err
|
|
}
|
|
|
|
// Tag implements Tagger.
|
|
func (w *Weave) Tag(r report.Report) (report.Report, error) {
|
|
w.mtx.RLock()
|
|
defer w.mtx.RUnlock()
|
|
|
|
// Put information from weaveDNS on the container nodes
|
|
if w.statusCache.DNS != nil {
|
|
for _, entry := range w.statusCache.DNS.Entries {
|
|
if entry.Tombstone > 0 {
|
|
continue
|
|
}
|
|
nodeID := report.MakeContainerNodeID(entry.ContainerID)
|
|
node, ok := r.Container.Nodes[nodeID]
|
|
if !ok {
|
|
continue
|
|
}
|
|
w, _ := node.Latest.Lookup(WeaveDNSHostname)
|
|
hostnames := report.IDList(strings.Fields(w))
|
|
hostnames = hostnames.Add(strings.TrimSuffix(entry.Hostname, "."))
|
|
r.Container.Nodes[nodeID] = node.WithLatests(map[string]string{WeaveDNSHostname: strings.Join(hostnames, " ")})
|
|
}
|
|
}
|
|
|
|
// Put information from weave ps on the container nodes
|
|
const maxPrefixSize = 12
|
|
for id, node := range r.Container.Nodes {
|
|
prefix, ok := node.Latest.Lookup(docker.ContainerID)
|
|
if !ok {
|
|
continue
|
|
}
|
|
if len(prefix) > maxPrefixSize {
|
|
prefix = prefix[:maxPrefixSize]
|
|
}
|
|
entry, ok := w.psCache[prefix]
|
|
if !ok {
|
|
continue
|
|
}
|
|
|
|
ipsWithScope := report.MakeStringSet()
|
|
for _, ip := range entry.IPs {
|
|
ipsWithScope = ipsWithScope.Add(report.MakeAddressNodeID("", ip))
|
|
}
|
|
node = node.WithSet(docker.ContainerIPs, report.MakeStringSet(entry.IPs...))
|
|
node = node.WithSet(docker.ContainerIPsWithScopes, ipsWithScope)
|
|
node = node.WithLatests(map[string]string{
|
|
WeaveMACAddress: entry.MACAddress,
|
|
})
|
|
r.Container.Nodes[id] = node
|
|
}
|
|
return r, nil
|
|
}
|
|
|
|
// Report implements Reporter.
|
|
func (w *Weave) Report() (report.Report, error) {
|
|
w.mtx.RLock()
|
|
defer w.mtx.RUnlock()
|
|
|
|
r := report.MakeReport()
|
|
r.Container = r.Container.WithMetadataTemplates(containerMetadata)
|
|
r.Overlay = r.Overlay.WithMetadataTemplates(weaveMetadata).WithTableTemplates(weaveTableTemplates)
|
|
|
|
// We report nodes for all peers (not just the current node) to highlight peers not monitored by Scope
|
|
// (i.e. without a running probe)
|
|
// Note: this will cause redundant information (n^2) if all peers have a running probe
|
|
for _, peer := range w.statusCache.Router.Peers {
|
|
node := w.getPeerNode(peer)
|
|
r.Overlay.AddNode(node)
|
|
}
|
|
if w.statusCache.IPAM != nil {
|
|
r.Overlay.AddNode(
|
|
report.MakeNode(report.MakeOverlayNodeID(report.WeaveOverlayPeerPrefix, w.statusCache.Router.Name)).
|
|
WithSet(host.LocalNetworks, report.MakeStringSet(w.statusCache.IPAM.DefaultSubnet)),
|
|
)
|
|
}
|
|
return r, nil
|
|
}
|
|
|
|
// getPeerNode obtains an Overlay topology node for representing a peer in the Weave network
|
|
func (w *Weave) getPeerNode(peer weave.Peer) report.Node {
|
|
node := report.MakeNode(report.MakeOverlayNodeID(report.WeaveOverlayPeerPrefix, peer.Name))
|
|
latests := map[string]string{
|
|
WeavePeerName: peer.Name,
|
|
WeavePeerNickName: peer.NickName,
|
|
}
|
|
|
|
// Peer corresponding to current host
|
|
if peer.Name == w.statusCache.Router.Name {
|
|
latests, node = w.addCurrentPeerInfo(latests, node)
|
|
}
|
|
|
|
for _, conn := range peer.Connections {
|
|
if conn.Outbound {
|
|
node = node.WithAdjacent(report.MakeOverlayNodeID(report.WeaveOverlayPeerPrefix, conn.Name))
|
|
}
|
|
}
|
|
|
|
return node.WithLatests(latests)
|
|
}
|
|
|
|
// addCurrentPeerInfo adds information exclusive to the Overlay topology node representing current Weave Net peer
|
|
// (i.e. in the same host as the reporting Scope probe)
|
|
func (w *Weave) addCurrentPeerInfo(latests map[string]string, node report.Node) (map[string]string, report.Node) {
|
|
latests[report.HostNodeID] = w.hostID
|
|
latests[WeaveVersion] = w.statusCache.Version
|
|
latests[WeaveEncryption] = "disabled"
|
|
if w.statusCache.Router.Encryption {
|
|
latests[WeaveEncryption] = "enabled"
|
|
}
|
|
latests[WeavePeerDiscovery] = "disabled"
|
|
if w.statusCache.Router.PeerDiscovery {
|
|
latests[WeavePeerDiscovery] = "enabled"
|
|
}
|
|
if w.statusCache.Router.ProtocolMinVersion == w.statusCache.Router.ProtocolMaxVersion {
|
|
latests[WeaveProtocol] = fmt.Sprintf("%d", w.statusCache.Router.ProtocolMinVersion)
|
|
} else {
|
|
latests[WeaveProtocol] = fmt.Sprintf("%d..%d", w.statusCache.Router.ProtocolMinVersion, w.statusCache.Router.ProtocolMaxVersion)
|
|
}
|
|
latests[WeaveTargetCount] = fmt.Sprintf("%d", len(w.statusCache.Router.Targets))
|
|
latests[WeaveConnectionCount] = fmt.Sprintf("%d", len(w.statusCache.Router.Connections))
|
|
latests[WeavePeerCount] = fmt.Sprintf("%d", len(w.statusCache.Router.Peers))
|
|
node = node.WithSet(WeaveTrustedSubnets, report.MakeStringSet(w.statusCache.Router.TrustedSubnets...))
|
|
if w.statusCache.IPAM != nil {
|
|
latests[WeaveIPAMStatus] = getIPAMStatus(*w.statusCache.IPAM)
|
|
latests[WeaveIPAMRange] = w.statusCache.IPAM.Range
|
|
latests[WeaveIPAMDefaultSubnet] = w.statusCache.IPAM.DefaultSubnet
|
|
}
|
|
if w.statusCache.DNS != nil {
|
|
latests[WeaveDNSDomain] = w.statusCache.DNS.Domain
|
|
latests[WeaveDNSUpstream] = strings.Join(w.statusCache.DNS.Upstream, ", ")
|
|
latests[WeaveDNSTTL] = fmt.Sprintf("%d", w.statusCache.DNS.TTL)
|
|
dnsEntryCount := 0
|
|
for _, entry := range w.statusCache.DNS.Entries {
|
|
if entry.Tombstone == 0 {
|
|
dnsEntryCount++
|
|
}
|
|
}
|
|
latests[WeaveDNSEntryCount] = fmt.Sprintf("%d", dnsEntryCount)
|
|
}
|
|
latests[WeaveProxyStatus] = "not running"
|
|
if w.statusCache.Proxy != nil {
|
|
latests[WeaveProxyStatus] = "running"
|
|
latests[WeaveProxyAddress] = ""
|
|
if len(w.statusCache.Proxy.Addresses) > 0 {
|
|
latests[WeaveProxyAddress] = w.statusCache.Proxy.Addresses[0]
|
|
}
|
|
}
|
|
latests[WeavePluginStatus] = "not running"
|
|
if w.statusCache.Plugin != nil {
|
|
latests[WeavePluginStatus] = "running"
|
|
latests[WeavePluginDriver] = w.statusCache.Plugin.DriverName
|
|
}
|
|
node = node.AddPrefixMulticolumnTable(WeaveConnectionsMulticolumnTablePrefix, getConnectionsTable(w.statusCache.Router))
|
|
node = node.WithParents(report.MakeSets().Add(report.Host, report.MakeStringSet(w.hostID)))
|
|
|
|
return latests, node
|
|
}
|
|
|
|
func getConnectionsTable(router weave.Router) []report.Row {
|
|
const (
|
|
outboundArrow = "->"
|
|
inboundArrow = "<-"
|
|
)
|
|
table := make([]report.Row, len(router.Connections))
|
|
for _, conn := range router.Connections {
|
|
arrow := inboundArrow
|
|
if conn.Outbound {
|
|
arrow = outboundArrow
|
|
}
|
|
table = append(table, report.Row{
|
|
ID: conn.Address,
|
|
Entries: map[string]string{
|
|
WeaveConnectionsConnection: fmt.Sprintf("%s %s", arrow, conn.Address),
|
|
WeaveConnectionsState: conn.State,
|
|
WeaveConnectionsInfo: conn.Info,
|
|
},
|
|
})
|
|
}
|
|
return table
|
|
}
|
|
|
|
func getIPAMStatus(ipam weave.IPAM) string {
|
|
allIPAMOwnersUnreachable := func(ipam weave.IPAM) bool {
|
|
for _, entry := range ipam.Entries {
|
|
if entry.Size > 0 && entry.IsKnownPeer {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
if len(ipam.Entries) > 0 {
|
|
if allIPAMOwnersUnreachable(ipam) {
|
|
return "all ranges owned by unreachable peers"
|
|
} else if len(ipam.PendingAllocates) > 0 {
|
|
return "waiting for grant"
|
|
|
|
} else {
|
|
return "ready"
|
|
}
|
|
}
|
|
|
|
if ipam.Paxos != nil {
|
|
if ipam.Paxos.Elector {
|
|
return fmt.Sprintf(
|
|
"awaiting consensus (quorum: %d, known: %d)",
|
|
ipam.Paxos.Quorum,
|
|
ipam.Paxos.KnownNodes,
|
|
)
|
|
}
|
|
return "priming"
|
|
}
|
|
|
|
return "idle"
|
|
}
|