This update provides:
1) workaround around the build failures. In
summary, it forces the download of some packages during the build
process.
2) update the set of packages that should go inside the vendor
directory
3) Update the dockerfile to use go 1.10
Change-Id: I2bfd090ce0f25b0c10aa214755ae2da7e5384d60
diff --git a/vendor/github.com/coreos/etcd/pkg/netutil/routes_linux.go b/vendor/github.com/coreos/etcd/pkg/netutil/routes_linux.go
new file mode 100644
index 0000000..797baeb
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/pkg/netutil/routes_linux.go
@@ -0,0 +1,250 @@
+// Copyright 2016 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build linux
+
+package netutil
+
+import (
+ "bytes"
+ "encoding/binary"
+ "fmt"
+ "net"
+ "sort"
+ "syscall"
+
+ "github.com/coreos/etcd/pkg/cpuutil"
+)
+
+var errNoDefaultRoute = fmt.Errorf("could not find default route")
+var errNoDefaultHost = fmt.Errorf("could not find default host")
+var errNoDefaultInterface = fmt.Errorf("could not find default interface")
+
+// GetDefaultHost obtains the first IP address of machine from the routing table and returns the IP address as string.
+// An IPv4 address is preferred to an IPv6 address for backward compatibility.
+func GetDefaultHost() (string, error) {
+ rmsgs, rerr := getDefaultRoutes()
+ if rerr != nil {
+ return "", rerr
+ }
+
+ // prioritize IPv4
+ if rmsg, ok := rmsgs[syscall.AF_INET]; ok {
+ if host, err := chooseHost(syscall.AF_INET, rmsg); host != "" || err != nil {
+ return host, err
+ }
+ delete(rmsgs, syscall.AF_INET)
+ }
+
+ // sort so choice is deterministic
+ var families []int
+ for family := range rmsgs {
+ families = append(families, int(family))
+ }
+ sort.Ints(families)
+
+ for _, f := range families {
+ family := uint8(f)
+ if host, err := chooseHost(family, rmsgs[family]); host != "" || err != nil {
+ return host, err
+ }
+ }
+
+ return "", errNoDefaultHost
+}
+
+func chooseHost(family uint8, rmsg *syscall.NetlinkMessage) (string, error) {
+ host, oif, err := parsePREFSRC(rmsg)
+ if host != "" || err != nil {
+ return host, err
+ }
+
+ // prefsrc not detected, fall back to getting address from iface
+ ifmsg, ierr := getIfaceAddr(oif, family)
+ if ierr != nil {
+ return "", ierr
+ }
+
+ attrs, aerr := syscall.ParseNetlinkRouteAttr(ifmsg)
+ if aerr != nil {
+ return "", aerr
+ }
+
+ for _, attr := range attrs {
+ // search for RTA_DST because ipv6 doesn't have RTA_SRC
+ if attr.Attr.Type == syscall.RTA_DST {
+ return net.IP(attr.Value).String(), nil
+ }
+ }
+
+ return "", nil
+}
+
+func getDefaultRoutes() (map[uint8]*syscall.NetlinkMessage, error) {
+ dat, err := syscall.NetlinkRIB(syscall.RTM_GETROUTE, syscall.AF_UNSPEC)
+ if err != nil {
+ return nil, err
+ }
+
+ msgs, msgErr := syscall.ParseNetlinkMessage(dat)
+ if msgErr != nil {
+ return nil, msgErr
+ }
+
+ routes := make(map[uint8]*syscall.NetlinkMessage)
+ rtmsg := syscall.RtMsg{}
+ for _, m := range msgs {
+ if m.Header.Type != syscall.RTM_NEWROUTE {
+ continue
+ }
+ buf := bytes.NewBuffer(m.Data[:syscall.SizeofRtMsg])
+ if rerr := binary.Read(buf, cpuutil.ByteOrder(), &rtmsg); rerr != nil {
+ continue
+ }
+ if rtmsg.Dst_len == 0 && rtmsg.Table == syscall.RT_TABLE_MAIN {
+ // zero-length Dst_len implies default route
+ msg := m
+ routes[rtmsg.Family] = &msg
+ }
+ }
+
+ if len(routes) > 0 {
+ return routes, nil
+ }
+
+ return nil, errNoDefaultRoute
+}
+
+// Used to get an address of interface.
+func getIfaceAddr(idx uint32, family uint8) (*syscall.NetlinkMessage, error) {
+ dat, err := syscall.NetlinkRIB(syscall.RTM_GETADDR, int(family))
+ if err != nil {
+ return nil, err
+ }
+
+ msgs, msgErr := syscall.ParseNetlinkMessage(dat)
+ if msgErr != nil {
+ return nil, msgErr
+ }
+
+ ifaddrmsg := syscall.IfAddrmsg{}
+ for _, m := range msgs {
+ if m.Header.Type != syscall.RTM_NEWADDR {
+ continue
+ }
+ buf := bytes.NewBuffer(m.Data[:syscall.SizeofIfAddrmsg])
+ if rerr := binary.Read(buf, cpuutil.ByteOrder(), &ifaddrmsg); rerr != nil {
+ continue
+ }
+ if ifaddrmsg.Index == idx {
+ return &m, nil
+ }
+ }
+
+ return nil, fmt.Errorf("could not find address for interface index %v", idx)
+
+}
+
+// Used to get a name of interface.
+func getIfaceLink(idx uint32) (*syscall.NetlinkMessage, error) {
+ dat, err := syscall.NetlinkRIB(syscall.RTM_GETLINK, syscall.AF_UNSPEC)
+ if err != nil {
+ return nil, err
+ }
+
+ msgs, msgErr := syscall.ParseNetlinkMessage(dat)
+ if msgErr != nil {
+ return nil, msgErr
+ }
+
+ ifinfomsg := syscall.IfInfomsg{}
+ for _, m := range msgs {
+ if m.Header.Type != syscall.RTM_NEWLINK {
+ continue
+ }
+ buf := bytes.NewBuffer(m.Data[:syscall.SizeofIfInfomsg])
+ if rerr := binary.Read(buf, cpuutil.ByteOrder(), &ifinfomsg); rerr != nil {
+ continue
+ }
+ if ifinfomsg.Index == int32(idx) {
+ return &m, nil
+ }
+ }
+
+ return nil, fmt.Errorf("could not find link for interface index %v", idx)
+}
+
+// GetDefaultInterfaces gets names of interfaces and returns a map[interface]families.
+func GetDefaultInterfaces() (map[string]uint8, error) {
+ interfaces := make(map[string]uint8)
+ rmsgs, rerr := getDefaultRoutes()
+ if rerr != nil {
+ return interfaces, rerr
+ }
+
+ for family, rmsg := range rmsgs {
+ _, oif, err := parsePREFSRC(rmsg)
+ if err != nil {
+ return interfaces, err
+ }
+
+ ifmsg, ierr := getIfaceLink(oif)
+ if ierr != nil {
+ return interfaces, ierr
+ }
+
+ attrs, aerr := syscall.ParseNetlinkRouteAttr(ifmsg)
+ if aerr != nil {
+ return interfaces, aerr
+ }
+
+ for _, attr := range attrs {
+ if attr.Attr.Type == syscall.IFLA_IFNAME {
+ // key is an interface name
+ // possible values: 2 - AF_INET, 10 - AF_INET6, 12 - dualstack
+ interfaces[string(attr.Value[:len(attr.Value)-1])] += family
+ }
+ }
+ }
+ if len(interfaces) > 0 {
+ return interfaces, nil
+ }
+ return interfaces, errNoDefaultInterface
+}
+
+// parsePREFSRC returns preferred source address and output interface index (RTA_OIF).
+func parsePREFSRC(m *syscall.NetlinkMessage) (host string, oif uint32, err error) {
+ var attrs []syscall.NetlinkRouteAttr
+ attrs, err = syscall.ParseNetlinkRouteAttr(m)
+ if err != nil {
+ return "", 0, err
+ }
+
+ for _, attr := range attrs {
+ if attr.Attr.Type == syscall.RTA_PREFSRC {
+ host = net.IP(attr.Value).String()
+ }
+ if attr.Attr.Type == syscall.RTA_OIF {
+ oif = cpuutil.ByteOrder().Uint32(attr.Value)
+ }
+ if host != "" && oif != uint32(0) {
+ break
+ }
+ }
+
+ if oif == 0 {
+ err = errNoDefaultRoute
+ }
+ return host, oif, err
+}