func (router *NetworkRouter) HandleHTTP(muxRouter *mux.Router) {
muxRouter.Methods("POST").Path("/connect").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
http.Error(w, fmt.Sprint("unable to parse form: ", err), http.StatusBadRequest)
}
if errors := router.InitiateConnections(r.Form["peer"], r.FormValue("replace") == "true"); len(errors) > 0 {
http.Error(w, common.ErrorMessages(errors), http.StatusBadRequest)
}
})
muxRouter.Methods("POST").Path("/forget").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
http.Error(w, fmt.Sprint("unable to parse form: ", err), http.StatusBadRequest)
}
router.ForgetConnections(r.Form["peer"])
})
}
func main() {
procs := runtime.NumCPU()
// packet sniffing can block an OS thread, so we need one thread
// for that plus at least one more.
if procs < 2 {
procs = 2
}
runtime.GOMAXPROCS(procs)
var (
justVersion bool
config mesh.Config
networkConfig weave.NetworkConfig
protocolMinVersion int
resume bool
ifaceName string
routerName string
nickName string
password string
pktdebug bool
logLevel string
prof string
bufSzMB int
noDiscovery bool
httpAddr string
ipamConfig ipamConfig
dockerAPI string
peers []string
noDNS bool
dnsConfig dnsConfig
datapathName string
trustedSubnetStr string
dbPrefix string
isAWSVPC bool
defaultDockerHost = "unix:///var/run/docker.sock"
)
if val := os.Getenv("DOCKER_HOST"); val != "" {
defaultDockerHost = val
}
mflag.BoolVar(&justVersion, []string{"#version", "-version"}, false, "print version and exit")
mflag.StringVar(&config.Host, []string{"-host"}, "", "router host")
mflag.IntVar(&config.Port, []string{"#port", "-port"}, mesh.Port, "router port")
mflag.IntVar(&protocolMinVersion, []string{"-min-protocol-version"}, mesh.ProtocolMinVersion, "minimum weave protocol version")
mflag.BoolVar(&resume, []string{"-resume"}, false, "resume connections to previous peers")
mflag.StringVar(&ifaceName, []string{"#iface", "-iface"}, "", "name of interface to capture/inject from (disabled if blank)")
mflag.StringVar(&routerName, []string{"#name", "-name"}, "", "name of router (defaults to MAC of interface)")
mflag.StringVar(&nickName, []string{"#nickname", "-nickname"}, "", "nickname of peer (defaults to hostname)")
mflag.StringVar(&password, []string{"#password", "-password"}, "", "network password")
mflag.StringVar(&logLevel, []string{"-log-level"}, "info", "logging level (debug, info, warning, error)")
mflag.BoolVar(&pktdebug, []string{"#pktdebug", "#-pktdebug", "-pkt-debug"}, false, "enable per-packet debug logging")
mflag.StringVar(&prof, []string{"#profile", "-profile"}, "", "enable profiling and write profiles to given path")
mflag.IntVar(&config.ConnLimit, []string{"#connlimit", "#-connlimit", "-conn-limit"}, 30, "connection limit (0 for unlimited)")
mflag.BoolVar(&noDiscovery, []string{"#nodiscovery", "#-nodiscovery", "-no-discovery"}, false, "disable peer discovery")
mflag.IntVar(&bufSzMB, []string{"#bufsz", "-bufsz"}, 8, "capture buffer size in MB")
mflag.StringVar(&httpAddr, []string{"#httpaddr", "#-httpaddr", "-http-addr"}, "", "address to bind HTTP interface to (disabled if blank, absolute path indicates unix domain socket)")
mflag.StringVar(&ipamConfig.Mode, []string{"-ipalloc-init"}, "", "allocator initialisation strategy (consensus, seed or observer)")
mflag.StringVar(&ipamConfig.IPRangeCIDR, []string{"#iprange", "#-iprange", "-ipalloc-range"}, "", "IP address range reserved for automatic allocation, in CIDR notation")
mflag.StringVar(&ipamConfig.IPSubnetCIDR, []string{"#ipsubnet", "#-ipsubnet", "-ipalloc-default-subnet"}, "", "subnet to allocate within by default, in CIDR notation")
mflag.IntVar(&ipamConfig.PeerCount, []string{"#initpeercount", "#-initpeercount", "-init-peer-count"}, 0, "number of peers in network (for IP address allocation)")
mflag.StringVar(&dockerAPI, []string{"#api", "#-api", "-docker-api"}, defaultDockerHost, "Docker API endpoint")
mflag.BoolVar(&noDNS, []string{"-no-dns"}, false, "disable DNS server")
mflag.StringVar(&dnsConfig.Domain, []string{"-dns-domain"}, nameserver.DefaultDomain, "local domain to server requests for")
mflag.StringVar(&dnsConfig.ListenAddress, []string{"-dns-listen-address"}, nameserver.DefaultListenAddress, "address to listen on for DNS requests")
mflag.IntVar(&dnsConfig.TTL, []string{"-dns-ttl"}, nameserver.DefaultTTL, "TTL for DNS request from our domain")
mflag.DurationVar(&dnsConfig.ClientTimeout, []string{"-dns-fallback-timeout"}, nameserver.DefaultClientTimeout, "timeout for fallback DNS requests")
mflag.StringVar(&dnsConfig.EffectiveListenAddress, []string{"-dns-effective-listen-address"}, "", "address DNS will actually be listening, after Docker port mapping")
mflag.StringVar(&dnsConfig.ResolvConf, []string{"-resolv-conf"}, "", "path to resolver configuration for fallback DNS lookups")
mflag.StringVar(&datapathName, []string{"-datapath"}, "", "ODP datapath name")
mflag.StringVar(&trustedSubnetStr, []string{"-trusted-subnets"}, "", "comma-separated list of trusted subnets in CIDR notation")
mflag.StringVar(&dbPrefix, []string{"-db-prefix"}, "/weavedb/weave", "pathname/prefix of filename to store data")
mflag.BoolVar(&isAWSVPC, []string{"-awsvpc"}, false, "use AWS VPC for routing")
// crude way of detecting that we probably have been started in a
// container, with `weave launch` --> suppress misleading paths in
// mflags error messages.
if os.Args[0] == "/home/weave/weaver" { // matches the Dockerfile ENTRYPOINT
os.Args[0] = "weave"
mflag.CommandLine.Init("weave", mflag.ExitOnError)
}
mflag.Parse()
peers = mflag.Args()
if resume && len(peers) > 0 {
Log.Fatalf("You must not specify an initial peer list in conjunction with --resume")
}
common.SetLogLevel(logLevel)
if justVersion {
fmt.Printf("weave router %s\n", version)
os.Exit(0)
}
Log.Println("Command line options:", options())
if prof != "" {
defer profile.Start(profile.CPUProfile, profile.ProfilePath(prof), profile.NoShutdownHook).Stop()
}
if protocolMinVersion < mesh.ProtocolMinVersion || protocolMinVersion > mesh.ProtocolMaxVersion {
Log.Fatalf("--min-protocol-version must be in range [%d,%d]", mesh.ProtocolMinVersion, mesh.ProtocolMaxVersion)
}
config.ProtocolMinVersion = byte(protocolMinVersion)
if pktdebug {
networkConfig.PacketLogging = packetLogging{}
} else {
networkConfig.PacketLogging = nopPacketLogging{}
}
overlay, bridge := createOverlay(datapathName, ifaceName, isAWSVPC, config.Host, config.Port, bufSzMB)
networkConfig.Bridge = bridge
name := peerName(routerName, bridge.Interface())
if nickName == "" {
var err error
nickName, err = os.Hostname()
checkFatal(err)
}
config.Password = determinePassword(password)
config.TrustedSubnets = parseTrustedSubnets(trustedSubnetStr)
config.PeerDiscovery = !noDiscovery
if isAWSVPC && len(config.Password) > 0 {
Log.Fatalf("--awsvpc mode is not compatible with the --password option")
}
db, err := db.NewBoltDB(dbPrefix + "data.db")
checkFatal(err)
defer db.Close()
router := weave.NewNetworkRouter(config, networkConfig, name, nickName, overlay, db)
Log.Println("Our name is", router.Ourself)
if peers, err = router.InitialPeers(resume, peers); err != nil {
Log.Fatal("Unable to get initial peer set: ", err)
}
var dockerCli *docker.Client
dockerVersion := "none"
if dockerAPI != "" {
dc, err := docker.NewClient(dockerAPI)
if err != nil {
Log.Fatal("Unable to start docker client: ", err)
} else {
Log.Info(dc.Info())
}
dockerCli = dc
dockerVersion = dockerCli.DockerVersion()
}
network := ""
if isAWSVPC {
network = "awsvpc"
}
checkForUpdates(dockerVersion, network)
observeContainers := func(o docker.ContainerObserver) {
if dockerCli != nil {
if err := dockerCli.AddObserver(o); err != nil {
Log.Fatal("Unable to start watcher", err)
}
}
}
isKnownPeer := func(name mesh.PeerName) bool {
return router.Peers.Fetch(name) != nil
}
var (
allocator *ipam.Allocator
defaultSubnet address.CIDR
trackerName string
)
if ipamConfig.Enabled() {
var t tracker.LocalRangeTracker
if isAWSVPC {
Log.Infoln("Creating AWSVPC LocalRangeTracker")
t, err = tracker.NewAWSVPCTracker()
if err != nil {
Log.Fatalf("Cannot create AWSVPC LocalRangeTracker: %s", err)
}
trackerName = "awsvpc"
}
allocator, defaultSubnet = createAllocator(router, ipamConfig, db, t, isKnownPeer)
observeContainers(allocator)
if dockerCli != nil {
ids, err := dockerCli.AllContainerIDs()
checkFatal(err)
allocator.PruneOwned(ids)
}
}
var (
ns *nameserver.Nameserver
dnsserver *nameserver.DNSServer
)
if !noDNS {
ns, dnsserver = createDNSServer(dnsConfig, router.Router, isKnownPeer)
observeContainers(ns)
ns.Start()
defer ns.Stop()
dnsserver.ActivateAndServe()
defer dnsserver.Stop()
}
router.Start()
if errors := router.InitiateConnections(peers, false); len(errors) > 0 {
Log.Fatal(common.ErrorMessages(errors))
}
// The weave script always waits for a status call to succeed,
// so there is no point in doing "weave launch --http-addr ''".
// This is here to support stand-alone use of weaver.
if httpAddr != "" {
muxRouter := mux.NewRouter()
if allocator != nil {
allocator.HandleHTTP(muxRouter, defaultSubnet, trackerName, dockerCli)
}
if ns != nil {
ns.HandleHTTP(muxRouter, dockerCli)
}
router.HandleHTTP(muxRouter)
HandleHTTP(muxRouter, version, router, allocator, defaultSubnet, ns, dnsserver)
http.Handle("/", common.LoggingHTTPHandler(muxRouter))
Log.Println("Listening for HTTP control messages on", httpAddr)
go listenAndServeHTTP(httpAddr)
}
common.SignalHandlerLoop(router)
}