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updated vendor dependencies for networking

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Signed-off-by: Rajat Chopra <rchopra@redhat.com>
This commit is contained in:
Rajat Chopra 2016-09-02 12:38:09 -07:00 committed by Mrunal Patel
parent c53b8c8afe
commit ecb513e665
15 changed files with 1320 additions and 10 deletions
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39
Godeps/Godeps.json generated
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@ -20,6 +20,21 @@
"ImportPath": "github.com/cloudfoundry-incubator/candiedyaml",
"Rev": "99c3df83b51532e3615f851d8c2dbb638f5313bf"
},
{
"ImportPath": "github.com/containernetworking/cni/libcni",
"Comment": "v0.3.0-67-gc5e39a8",
"Rev": "c5e39a87f702f757a1e98f701d873992bd4d37b1"
},
{
"ImportPath": "github.com/containernetworking/cni/pkg/invoke",
"Comment": "v0.3.0-67-gc5e39a8",
"Rev": "c5e39a87f702f757a1e98f701d873992bd4d37b1"
},
{
"ImportPath": "github.com/containernetworking/cni/pkg/types",
"Comment": "v0.3.0-67-gc5e39a8",
"Rev": "c5e39a87f702f757a1e98f701d873992bd4d37b1"
},
{
"ImportPath": "github.com/containers/image/directory",
"Rev": "0c795ea71fce8641e408312e1628d20b38903fe6"
@ -289,6 +304,10 @@
"Comment": "v1.0.0-rc1-29-gbbaf29e",
"Rev": "bbaf29e6173a1ef017d75db11e4d698ac4de0f1e"
},
{
"ImportPath": "github.com/rajatchopra/ocicni",
"Rev": "df6e1fb00fd0763d67f8f6f6ebaf3496c3eea451"
},
{
"ImportPath": "github.com/syndtr/gocapability/capability",
"Rev": "2c00daeb6c3b45114c80ac44119e7b8801fdd852"
@ -369,6 +388,11 @@
"Comment": "v1.0.1-GA-29-g79b7c34",
"Rev": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b"
},
{
"ImportPath": "google.golang.org/grpc/internal",
"Comment": "v1.0.1-GA-29-g79b7c34",
"Rev": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b"
},
{
"ImportPath": "google.golang.org/grpc/metadata",
"Comment": "v1.0.1-GA-29-g79b7c34",
@ -379,6 +403,11 @@
"Comment": "v1.0.1-GA-29-g79b7c34",
"Rev": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b"
},
{
"ImportPath": "google.golang.org/grpc/peer",
"Comment": "v1.0.1-GA-29-g79b7c34",
"Rev": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b"
},
{
"ImportPath": "google.golang.org/grpc/transport",
"Comment": "v1.0.1-GA-29-g79b7c34",
@ -403,16 +432,6 @@
"ImportPath": "k8s.io/kubernetes/pkg/util/sets",
"Comment": "v1.4.0-alpha.1-489-g976ca09",
"Rev": "976ca09d714cf114fb7a9e681bc0b170760cbdab"
},
{
"ImportPath": "google.golang.org/grpc/internal",
"Comment": "v1.0.1-GA-29-g79b7c34",
"Rev": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b"
},
{
"ImportPath": "google.golang.org/grpc/peer",
"Comment": "v1.0.1-GA-29-g79b7c34",
"Rev": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b"
}
]
}

202
vendor/github.com/containernetworking/cni/LICENSE generated vendored Normal file
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@ -0,0 +1,202 @@
Apache License
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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73
vendor/github.com/containernetworking/cni/libcni/api.go generated vendored Normal file
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// Copyright 2015 CNI 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.
package libcni
import (
"strings"
"github.com/containernetworking/cni/pkg/invoke"
"github.com/containernetworking/cni/pkg/types"
)
type RuntimeConf struct {
ContainerID string
NetNS string
IfName string
Args [][2]string
}
type NetworkConfig struct {
Network *types.NetConf
Bytes []byte
}
type CNI interface {
AddNetwork(net *NetworkConfig, rt *RuntimeConf) (*types.Result, error)
DelNetwork(net *NetworkConfig, rt *RuntimeConf) error
}
type CNIConfig struct {
Path []string
}
func (c *CNIConfig) AddNetwork(net *NetworkConfig, rt *RuntimeConf) (*types.Result, error) {
pluginPath, err := invoke.FindInPath(net.Network.Type, c.Path)
if err != nil {
return nil, err
}
return invoke.ExecPluginWithResult(pluginPath, net.Bytes, c.args("ADD", rt))
}
func (c *CNIConfig) DelNetwork(net *NetworkConfig, rt *RuntimeConf) error {
pluginPath, err := invoke.FindInPath(net.Network.Type, c.Path)
if err != nil {
return err
}
return invoke.ExecPluginWithoutResult(pluginPath, net.Bytes, c.args("DEL", rt))
}
// =====
func (c *CNIConfig) args(action string, rt *RuntimeConf) *invoke.Args {
return &invoke.Args{
Command: action,
ContainerID: rt.ContainerID,
NetNS: rt.NetNS,
PluginArgs: rt.Args,
IfName: rt.IfName,
Path: strings.Join(c.Path, ":"),
}
}

110
vendor/github.com/containernetworking/cni/libcni/conf.go generated vendored Normal file
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// Copyright 2015 CNI 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.
package libcni
import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"sort"
)
func ConfFromBytes(bytes []byte) (*NetworkConfig, error) {
conf := &NetworkConfig{Bytes: bytes}
if err := json.Unmarshal(bytes, &conf.Network); err != nil {
return nil, fmt.Errorf("error parsing configuration: %s", err)
}
return conf, nil
}
func ConfFromFile(filename string) (*NetworkConfig, error) {
bytes, err := ioutil.ReadFile(filename)
if err != nil {
return nil, fmt.Errorf("error reading %s: %s", filename, err)
}
return ConfFromBytes(bytes)
}
func ConfFiles(dir string) ([]string, error) {
// In part, adapted from rkt/networking/podenv.go#listFiles
files, err := ioutil.ReadDir(dir)
switch {
case err == nil: // break
case os.IsNotExist(err):
return nil, nil
default:
return nil, err
}
confFiles := []string{}
for _, f := range files {
if f.IsDir() {
continue
}
if filepath.Ext(f.Name()) == ".conf" {
confFiles = append(confFiles, filepath.Join(dir, f.Name()))
}
}
return confFiles, nil
}
func LoadConf(dir, name string) (*NetworkConfig, error) {
files, err := ConfFiles(dir)
switch {
case err != nil:
return nil, err
case len(files) == 0:
return nil, fmt.Errorf("no net configurations found")
}
sort.Strings(files)
for _, confFile := range files {
conf, err := ConfFromFile(confFile)
if err != nil {
return nil, err
}
if conf.Network.Name == name {
return conf, nil
}
}
return nil, fmt.Errorf(`no net configuration with name "%s" in %s`, name, dir)
}
func InjectConf(original *NetworkConfig, key string, newValue interface{}) (*NetworkConfig, error) {
config := make(map[string]interface{})
err := json.Unmarshal(original.Bytes, &config)
if err != nil {
return nil, fmt.Errorf("unmarshal existing network bytes: %s", err)
}
if key == "" {
return nil, fmt.Errorf("key value can not be empty")
}
if newValue == nil {
return nil, fmt.Errorf("newValue must be specified")
}
config[key] = newValue
newBytes, err := json.Marshal(config)
if err != nil {
return nil, err
}
return ConfFromBytes(newBytes)
}

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vendor/github.com/containernetworking/cni/pkg/invoke/args.go generated vendored Normal file
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// Copyright 2015 CNI 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.
package invoke
import (
"os"
"strings"
)
type CNIArgs interface {
// For use with os/exec; i.e., return nil to inherit the
// environment from this process
AsEnv() []string
}
type inherited struct{}
var inheritArgsFromEnv inherited
func (_ *inherited) AsEnv() []string {
return nil
}
func ArgsFromEnv() CNIArgs {
return &inheritArgsFromEnv
}
type Args struct {
Command string
ContainerID string
NetNS string
PluginArgs [][2]string
PluginArgsStr string
IfName string
Path string
}
func (args *Args) AsEnv() []string {
env := os.Environ()
pluginArgsStr := args.PluginArgsStr
if pluginArgsStr == "" {
pluginArgsStr = stringify(args.PluginArgs)
}
env = append(env,
"CNI_COMMAND="+args.Command,
"CNI_CONTAINERID="+args.ContainerID,
"CNI_NETNS="+args.NetNS,
"CNI_ARGS="+pluginArgsStr,
"CNI_IFNAME="+args.IfName,
"CNI_PATH="+args.Path)
return env
}
// taken from rkt/networking/net_plugin.go
func stringify(pluginArgs [][2]string) string {
entries := make([]string, len(pluginArgs))
for i, kv := range pluginArgs {
entries[i] = strings.Join(kv[:], "=")
}
return strings.Join(entries, ";")
}

53
vendor/github.com/containernetworking/cni/pkg/invoke/delegate.go generated vendored Normal file
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@ -0,0 +1,53 @@
// Copyright 2016 CNI 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.
package invoke
import (
"fmt"
"os"
"strings"
"github.com/containernetworking/cni/pkg/types"
)
func DelegateAdd(delegatePlugin string, netconf []byte) (*types.Result, error) {
if os.Getenv("CNI_COMMAND") != "ADD" {
return nil, fmt.Errorf("CNI_COMMAND is not ADD")
}
paths := strings.Split(os.Getenv("CNI_PATH"), ":")
pluginPath, err := FindInPath(delegatePlugin, paths)
if err != nil {
return nil, err
}
return ExecPluginWithResult(pluginPath, netconf, ArgsFromEnv())
}
func DelegateDel(delegatePlugin string, netconf []byte) error {
if os.Getenv("CNI_COMMAND") != "DEL" {
return fmt.Errorf("CNI_COMMAND is not DEL")
}
paths := strings.Split(os.Getenv("CNI_PATH"), ":")
pluginPath, err := FindInPath(delegatePlugin, paths)
if err != nil {
return err
}
return ExecPluginWithoutResult(pluginPath, netconf, ArgsFromEnv())
}

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vendor/github.com/containernetworking/cni/pkg/invoke/exec.go generated vendored Normal file
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// Copyright 2015 CNI 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.
package invoke
import (
"bytes"
"encoding/json"
"fmt"
"io"
"os"
"os/exec"
"github.com/containernetworking/cni/pkg/types"
)
func pluginErr(err error, output []byte) error {
if _, ok := err.(*exec.ExitError); ok {
emsg := types.Error{}
if perr := json.Unmarshal(output, &emsg); perr != nil {
return fmt.Errorf("netplugin failed but error parsing its diagnostic message %q: %v", string(output), perr)
}
details := ""
if emsg.Details != "" {
details = fmt.Sprintf("; %v", emsg.Details)
}
return fmt.Errorf("%v%v", emsg.Msg, details)
}
return err
}
func ExecPluginWithResult(pluginPath string, netconf []byte, args CNIArgs) (*types.Result, error) {
stdoutBytes, err := execPlugin(pluginPath, netconf, args)
if err != nil {
return nil, err
}
res := &types.Result{}
err = json.Unmarshal(stdoutBytes, res)
return res, err
}
func ExecPluginWithoutResult(pluginPath string, netconf []byte, args CNIArgs) error {
_, err := execPlugin(pluginPath, netconf, args)
return err
}
func execPlugin(pluginPath string, netconf []byte, args CNIArgs) ([]byte, error) {
return defaultRawExec.ExecPlugin(pluginPath, netconf, args.AsEnv())
}
var defaultRawExec = &RawExec{Stderr: os.Stderr}
type RawExec struct {
Stderr io.Writer
}
func (e *RawExec) ExecPlugin(pluginPath string, stdinData []byte, environ []string) ([]byte, error) {
stdout := &bytes.Buffer{}
c := exec.Cmd{
Env: environ,
Path: pluginPath,
Args: []string{pluginPath},
Stdin: bytes.NewBuffer(stdinData),
Stdout: stdout,
Stderr: e.Stderr,
}
if err := c.Run(); err != nil {
return nil, pluginErr(err, stdout.Bytes())
}
return stdout.Bytes(), nil
}

47
vendor/github.com/containernetworking/cni/pkg/invoke/find.go generated vendored Normal file
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// Copyright 2015 CNI 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.
package invoke
import (
"fmt"
"os"
"path/filepath"
)
// FindInPath returns the full path of the plugin by searching in the provided path
func FindInPath(plugin string, paths []string) (string, error) {
if plugin == "" {
return "", fmt.Errorf("no plugin name provided")
}
if len(paths) == 0 {
return "", fmt.Errorf("no paths provided")
}
var fullpath string
for _, path := range paths {
full := filepath.Join(path, plugin)
if fi, err := os.Stat(full); err == nil && fi.Mode().IsRegular() {
fullpath = full
break
}
}
if fullpath == "" {
return "", fmt.Errorf("failed to find plugin %q in path %s", plugin, paths)
}
return fullpath, nil
}

101
vendor/github.com/containernetworking/cni/pkg/types/args.go generated vendored Normal file
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// Copyright 2015 CNI 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.
package types
import (
"encoding"
"fmt"
"reflect"
"strings"
)
// UnmarshallableBool typedef for builtin bool
// because builtin type's methods can't be declared
type UnmarshallableBool bool
// UnmarshalText implements the encoding.TextUnmarshaler interface.
// Returns boolean true if the string is "1" or "[Tt]rue"
// Returns boolean false if the string is "0" or "[Ff]alse"
func (b *UnmarshallableBool) UnmarshalText(data []byte) error {
s := strings.ToLower(string(data))
switch s {
case "1", "true":
*b = true
case "0", "false":
*b = false
default:
return fmt.Errorf("Boolean unmarshal error: invalid input %s", s)
}
return nil
}
// UnmarshallableString typedef for builtin string
type UnmarshallableString string
// UnmarshalText implements the encoding.TextUnmarshaler interface.
// Returns the string
func (s *UnmarshallableString) UnmarshalText(data []byte) error {
*s = UnmarshallableString(data)
return nil
}
// CommonArgs contains the IgnoreUnknown argument
// and must be embedded by all Arg structs
type CommonArgs struct {
IgnoreUnknown UnmarshallableBool `json:"ignoreunknown,omitempty"`
}
// GetKeyField is a helper function to receive Values
// Values that represent a pointer to a struct
func GetKeyField(keyString string, v reflect.Value) reflect.Value {
return v.Elem().FieldByName(keyString)
}
// LoadArgs parses args from a string in the form "K=V;K2=V2;..."
func LoadArgs(args string, container interface{}) error {
if args == "" {
return nil
}
containerValue := reflect.ValueOf(container)
pairs := strings.Split(args, ";")
unknownArgs := []string{}
for _, pair := range pairs {
kv := strings.Split(pair, "=")
if len(kv) != 2 {
return fmt.Errorf("ARGS: invalid pair %q", pair)
}
keyString := kv[0]
valueString := kv[1]
keyField := GetKeyField(keyString, containerValue)
if !keyField.IsValid() {
unknownArgs = append(unknownArgs, pair)
continue
}
u := keyField.Addr().Interface().(encoding.TextUnmarshaler)
err := u.UnmarshalText([]byte(valueString))
if err != nil {
return fmt.Errorf("ARGS: error parsing value of pair %q: %v)", pair, err)
}
}
isIgnoreUnknown := GetKeyField("IgnoreUnknown", containerValue).Bool()
if len(unknownArgs) > 0 && !isIgnoreUnknown {
return fmt.Errorf("ARGS: unknown args %q", unknownArgs)
}
return nil
}

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// Copyright 2015 CNI 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.
package types
import (
"encoding/json"
"fmt"
"net"
"os"
)
// like net.IPNet but adds JSON marshalling and unmarshalling
type IPNet net.IPNet
// ParseCIDR takes a string like "10.2.3.1/24" and
// return IPNet with "10.2.3.1" and /24 mask
func ParseCIDR(s string) (*net.IPNet, error) {
ip, ipn, err := net.ParseCIDR(s)
if err != nil {
return nil, err
}
ipn.IP = ip
return ipn, nil
}
func (n IPNet) MarshalJSON() ([]byte, error) {
return json.Marshal((*net.IPNet)(&n).String())
}
func (n *IPNet) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
tmp, err := ParseCIDR(s)
if err != nil {
return err
}
*n = IPNet(*tmp)
return nil
}
// NetConf describes a network.
type NetConf struct {
Name string `json:"name,omitempty"`
Type string `json:"type,omitempty"`
IPAM struct {
Type string `json:"type,omitempty"`
} `json:"ipam,omitempty"`
DNS DNS `json:"dns"`
}
// Result is what gets returned from the plugin (via stdout) to the caller
type Result struct {
IP4 *IPConfig `json:"ip4,omitempty"`
IP6 *IPConfig `json:"ip6,omitempty"`
DNS DNS `json:"dns,omitempty"`
}
func (r *Result) Print() error {
return prettyPrint(r)
}
// String returns a formatted string in the form of "[IP4: $1,][ IP6: $2,] DNS: $3" where
// $1 represents the receiver's IPv4, $2 represents the receiver's IPv6 and $3 the
// receiver's DNS. If $1 or $2 are nil, they won't be present in the returned string.
func (r *Result) String() string {
var str string
if r.IP4 != nil {
str = fmt.Sprintf("IP4:%+v, ", *r.IP4)
}
if r.IP6 != nil {
str += fmt.Sprintf("IP6:%+v, ", *r.IP6)
}
return fmt.Sprintf("%sDNS:%+v", str, r.DNS)
}
// IPConfig contains values necessary to configure an interface
type IPConfig struct {
IP net.IPNet
Gateway net.IP
Routes []Route
}
// DNS contains values interesting for DNS resolvers
type DNS struct {
Nameservers []string `json:"nameservers,omitempty"`
Domain string `json:"domain,omitempty"`
Search []string `json:"search,omitempty"`
Options []string `json:"options,omitempty"`
}
type Route struct {
Dst net.IPNet
GW net.IP
}
type Error struct {
Code uint `json:"code"`
Msg string `json:"msg"`
Details string `json:"details,omitempty"`
}
func (e *Error) Error() string {
return e.Msg
}
func (e *Error) Print() error {
return prettyPrint(e)
}
// net.IPNet is not JSON (un)marshallable so this duality is needed
// for our custom IPNet type
// JSON (un)marshallable types
type ipConfig struct {
IP IPNet `json:"ip"`
Gateway net.IP `json:"gateway,omitempty"`
Routes []Route `json:"routes,omitempty"`
}
type route struct {
Dst IPNet `json:"dst"`
GW net.IP `json:"gw,omitempty"`
}
func (c *IPConfig) MarshalJSON() ([]byte, error) {
ipc := ipConfig{
IP: IPNet(c.IP),
Gateway: c.Gateway,
Routes: c.Routes,
}
return json.Marshal(ipc)
}
func (c *IPConfig) UnmarshalJSON(data []byte) error {
ipc := ipConfig{}
if err := json.Unmarshal(data, &ipc); err != nil {
return err
}
c.IP = net.IPNet(ipc.IP)
c.Gateway = ipc.Gateway
c.Routes = ipc.Routes
return nil
}
func (r *Route) UnmarshalJSON(data []byte) error {
rt := route{}
if err := json.Unmarshal(data, &rt); err != nil {
return err
}
r.Dst = net.IPNet(rt.Dst)
r.GW = rt.GW
return nil
}
func (r *Route) MarshalJSON() ([]byte, error) {
rt := route{
Dst: IPNet(r.Dst),
GW: r.GW,
}
return json.Marshal(rt)
}
func prettyPrint(obj interface{}) error {
data, err := json.MarshalIndent(obj, "", " ")
if err != nil {
return err
}
_, err = os.Stdout.Write(data)
return err
}

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# ocicni
API layer to call the CNI plugins from an OCI lifecycle daemon

26
vendor/github.com/rajatchopra/ocicni/noop.go generated vendored Normal file
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package ocicni
type cniNoOp struct {
}
func (noop *cniNoOp) Name() string {
return "CNINoOp"
}
func (noop *cniNoOp) SetUpPod(netnsPath string, namespace string, name string, containerID string) error {
return nil
}
func (noop *cniNoOp) TearDownPod(netnsPath string, namespace string, name string, containerID string) error {
return nil
}
func (noop *cniNoOp) GetContainerNetworkStatus(netnsPath string, namespace string, name string, containerID string) (string, error) {
return "", nil
}
func (noop *cniNoOp) Status() error {
return nil
}

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vendor/github.com/rajatchopra/ocicni/ocicni.go generated vendored Normal file
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package ocicni
import (
"errors"
"fmt"
"os/exec"
"sort"
"sync"
"time"
"github.com/containernetworking/cni/libcni"
cnitypes "github.com/containernetworking/cni/pkg/types"
"github.com/golang/glog"
)
type cniNetworkPlugin struct {
loNetwork *cniNetwork
sync.RWMutex
defaultNetwork *cniNetwork
nsenterPath string
pluginDir string
vendorCNIDirPrefix string
}
type cniNetwork struct {
name string
NetworkConfig *libcni.NetworkConfig
CNIConfig libcni.CNI
}
func InitCNI(pluginDir string) (CNIPlugin, error) {
plugin := probeNetworkPluginsWithVendorCNIDirPrefix(pluginDir, "")
var err error
plugin.nsenterPath, err = exec.LookPath("nsenter")
if err != nil {
return nil, err
}
// check if a default network exists, otherwise dump the CNI search and return a noop plugin
_, err = getDefaultCNINetwork(plugin.pluginDir, plugin.vendorCNIDirPrefix)
if err != nil {
glog.Warningf("Error in finding usable CNI plugin - %v", err)
// create a noop plugin instead
return &cniNoOp{}, nil
}
// sync network config from pluginDir periodically to detect network config updates
go func() {
t := time.NewTimer(10*time.Second)
for {
plugin.syncNetworkConfig()
select {
case <- t.C:
}
}
}()
return plugin, nil
}
func probeNetworkPluginsWithVendorCNIDirPrefix(pluginDir, vendorCNIDirPrefix string) (*cniNetworkPlugin) {
plugin := &cniNetworkPlugin{
defaultNetwork: nil,
loNetwork: getLoNetwork(vendorCNIDirPrefix),
pluginDir: pluginDir,
vendorCNIDirPrefix: vendorCNIDirPrefix,
}
// sync NetworkConfig in best effort during probing.
plugin.syncNetworkConfig()
return plugin
}
func getDefaultCNINetwork(pluginDir, vendorCNIDirPrefix string) (*cniNetwork, error) {
if pluginDir == "" {
pluginDir = DefaultNetDir
}
files, err := libcni.ConfFiles(pluginDir)
switch {
case err != nil:
return nil, err
case len(files) == 0:
return nil, fmt.Errorf("No networks found in %s", pluginDir)
}
sort.Strings(files)
for _, confFile := range files {
conf, err := libcni.ConfFromFile(confFile)
if err != nil {
glog.Warningf("Error loading CNI config file %s: %v", confFile, err)
continue
}
// Search for vendor-specific plugins as well as default plugins in the CNI codebase.
vendorDir := vendorCNIDir(vendorCNIDirPrefix, conf.Network.Type)
cninet := &libcni.CNIConfig{
Path: []string{DefaultCNIDir, vendorDir},
}
network := &cniNetwork{name: conf.Network.Name, NetworkConfig: conf, CNIConfig: cninet}
return network, nil
}
return nil, fmt.Errorf("No valid networks found in %s", pluginDir)
}
func vendorCNIDir(prefix, pluginType string) string {
return fmt.Sprintf(VendorCNIDirTemplate, prefix, pluginType)
}
func getLoNetwork(vendorDirPrefix string) *cniNetwork {
loConfig, err := libcni.ConfFromBytes([]byte(`{
"cniVersion": "0.1.0",
"name": "cni-loopback",
"type": "loopback"
}`))
if err != nil {
// The hardcoded config above should always be valid and unit tests will
// catch this
panic(err)
}
cninet := &libcni.CNIConfig{
Path: []string{vendorCNIDir(vendorDirPrefix, loConfig.Network.Type), DefaultCNIDir},
}
loNetwork := &cniNetwork{
name: "lo",
NetworkConfig: loConfig,
CNIConfig: cninet,
}
return loNetwork
}
func (plugin *cniNetworkPlugin) syncNetworkConfig() {
network, err := getDefaultCNINetwork(plugin.pluginDir, plugin.vendorCNIDirPrefix)
if err != nil {
glog.Errorf("error updating cni config: %s", err)
return
}
plugin.setDefaultNetwork(network)
}
func (plugin *cniNetworkPlugin) getDefaultNetwork() *cniNetwork {
plugin.RLock()
defer plugin.RUnlock()
return plugin.defaultNetwork
}
func (plugin *cniNetworkPlugin) setDefaultNetwork(n *cniNetwork) {
plugin.Lock()
defer plugin.Unlock()
plugin.defaultNetwork = n
}
func (plugin *cniNetworkPlugin) checkInitialized() error {
if plugin.getDefaultNetwork() == nil {
return errors.New("cni config uninitialized")
}
return nil
}
func (plugin *cniNetworkPlugin) Name() string {
return CNIPluginName
}
func (plugin *cniNetworkPlugin) SetUpPod(netnsPath string, namespace string, name string, id string) error {
if err := plugin.checkInitialized(); err != nil {
return err
}
_, err := plugin.loNetwork.addToNetwork(name, namespace, id, netnsPath)
if err != nil {
glog.Errorf("Error while adding to cni lo network: %s", err)
return err
}
_, err = plugin.getDefaultNetwork().addToNetwork(name, namespace, id, netnsPath)
if err != nil {
glog.Errorf("Error while adding to cni network: %s", err)
return err
}
return err
}
func (plugin *cniNetworkPlugin) TearDownPod(netnsPath string, namespace string, name string, id string) error {
if err := plugin.checkInitialized(); err != nil {
return err
}
return plugin.getDefaultNetwork().deleteFromNetwork(name, namespace, id, netnsPath)
}
// TODO: Use the addToNetwork function to obtain the IP of the Pod. That will assume idempotent ADD call to the plugin.
// Also fix the runtime's call to Status function to be done only in the case that the IP is lost, no need to do periodic calls
func (plugin *cniNetworkPlugin) GetContainerNetworkStatus(netnsPath string, namespace string, name string, id string) (string, error) {
ip, err := getContainerIP(plugin.nsenterPath, netnsPath, DefaultInterfaceName, "-4")
if err != nil {
return "", err
}
return ip.String(), nil
}
func (network *cniNetwork) addToNetwork(podName string, podNamespace string, podInfraContainerID string, podNetnsPath string) (*cnitypes.Result, error) {
rt, err := buildCNIRuntimeConf(podName, podNamespace, podInfraContainerID, podNetnsPath)
if err != nil {
glog.Errorf("Error adding network: %v", err)
return nil, err
}
netconf, cninet := network.NetworkConfig, network.CNIConfig
glog.V(4).Infof("About to run with conf.Network.Type=%v", netconf.Network.Type)
res, err := cninet.AddNetwork(netconf, rt)
if err != nil {
glog.Errorf("Error adding network: %v", err)
return nil, err
}
return res, nil
}
func (network *cniNetwork) deleteFromNetwork(podName string, podNamespace string, podInfraContainerID string, podNetnsPath string) error {
rt, err := buildCNIRuntimeConf(podName, podNamespace, podInfraContainerID, podNetnsPath)
if err != nil {
glog.Errorf("Error deleting network: %v", err)
return err
}
netconf, cninet := network.NetworkConfig, network.CNIConfig
glog.V(4).Infof("About to run with conf.Network.Type=%v", netconf.Network.Type)
err = cninet.DelNetwork(netconf, rt)
if err != nil {
glog.Errorf("Error deleting network: %v", err)
return err
}
return nil
}
func buildCNIRuntimeConf(podName string, podNs string, podInfraContainerID string, podNetnsPath string) (*libcni.RuntimeConf, error) {
glog.V(4).Infof("Got netns path %v", podNetnsPath)
glog.V(4).Infof("Using netns path %v", podNs)
rt := &libcni.RuntimeConf{
ContainerID: podInfraContainerID,
NetNS: podNetnsPath,
IfName: DefaultInterfaceName,
Args: [][2]string{
{"IgnoreUnknown", "1"},
{"K8S_POD_NAMESPACE", podNs},
{"K8S_POD_NAME", podName},
{"K8S_POD_INFRA_CONTAINER_ID", podInfraContainerID},
},
}
return rt, nil
}
func (plugin *cniNetworkPlugin) Status() error {
return plugin.checkInitialized()
}

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vendor/github.com/rajatchopra/ocicni/types.go generated vendored Normal file
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package ocicni
const (
DefaultInterfaceName = "eth0"
CNIPluginName = "cni"
DefaultNetDir = "/etc/cni/net.d"
DefaultCNIDir = "/opt/cni/bin"
VendorCNIDirTemplate = "%s/opt/%s/bin"
)
type CNIPlugin interface {
// Name returns the plugin's name. This will be used when searching
// for a plugin by name, e.g.
Name() string
// SetUpPod is the method called after the infra container of
// the pod has been created but before the other containers of the
// pod are launched.
SetUpPod(netnsPath string, namespace string, name string, containerID string) error
// TearDownPod is the method called before a pod's infra container will be deleted
TearDownPod(netnsPath string, namespace string, name string, containerID string) error
// Status is the method called to obtain the ipv4 or ipv6 addresses of the container
GetContainerNetworkStatus(netnsPath string, namespace string, name string, containerID string) (string, error)
// NetworkStatus returns error if the network plugin is in error state
Status() error
}

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vendor/github.com/rajatchopra/ocicni/util.go generated vendored Normal file
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package ocicni
import (
"os/exec"
"strings"
"net"
"fmt"
)
func getContainerIP(nsenterPath, netnsPath, interfaceName, addrType string) (net.IP, error) {
// Try to retrieve ip inside container network namespace
output, err := exec.Command(nsenterPath, fmt.Sprintf("--net=%s", netnsPath), "-F", "--",
"ip", "-o", addrType, "addr", "show", "dev", interfaceName, "scope", "global").CombinedOutput()
if err != nil {
return nil, fmt.Errorf("Unexpected command output %s with error: %v", output, err)
}
lines := strings.Split(string(output), "\n")
if len(lines) < 1 {
return nil, fmt.Errorf("Unexpected command output %s", output)
}
fields := strings.Fields(lines[0])
if len(fields) < 4 {
return nil, fmt.Errorf("Unexpected address output %s ", lines[0])
}
ip, _, err := net.ParseCIDR(fields[3])
if err != nil {
return nil, fmt.Errorf("CNI failed to parse ip from output %s due to %v", output, err)
}
return ip, nil
}