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Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
This commit is contained in:
Василий Толстов
2015-03-28 20:04:09 +03:00
parent 94d56f972a
commit 7449a4a5db
93 changed files with 57 additions and 20655 deletions
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197
datasource/metadata/cloudsigma/server_context.go
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@@ -1,197 +0,0 @@
// Copyright 2015 CoreOS, Inc.
//
// 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 cloudsigma
import (
"bytes"
"encoding/base64"
"encoding/json"
"errors"
"io/ioutil"
"net"
"os"
"strings"
"github.com/coreos/coreos-cloudinit/datasource"
"github.com/coreos/coreos-cloudinit/Godeps/_workspace/src/github.com/cloudsigma/cepgo"
)
const (
userDataFieldName = "cloudinit-user-data"
)
type serverContextService struct {
client interface {
All() (interface{}, error)
Key(string) (interface{}, error)
Meta() (map[string]string, error)
FetchRaw(string) ([]byte, error)
}
}
func NewServerContextService() *serverContextService {
return &serverContextService{
client: cepgo.NewCepgo(),
}
}
func (_ *serverContextService) IsAvailable() bool {
productNameFile, err := os.Open("/sys/class/dmi/id/product_name")
if err != nil {
return false
}
productName := make([]byte, 10)
_, err = productNameFile.Read(productName)
return err == nil && string(productName) == "CloudSigma" && hasDHCPLeases()
}
func (_ *serverContextService) AvailabilityChanges() bool {
return true
}
func (_ *serverContextService) ConfigRoot() string {
return ""
}
func (_ *serverContextService) Type() string {
return "server-context"
}
func (scs *serverContextService) FetchMetadata() (metadata datasource.Metadata, err error) {
var (
inputMetadata struct {
Name string `json:"name"`
UUID string `json:"uuid"`
Meta map[string]string `json:"meta"`
Nics []struct {
Mac string `json:"mac"`
IPv4Conf struct {
InterfaceType string `json:"interface_type"`
IP struct {
UUID string `json:"uuid"`
} `json:"ip"`
} `json:"ip_v4_conf"`
VLAN struct {
UUID string `json:"uuid"`
} `json:"vlan"`
} `json:"nics"`
}
rawMetadata []byte
)
if rawMetadata, err = scs.client.FetchRaw(""); err != nil {
return
}
if err = json.Unmarshal(rawMetadata, &inputMetadata); err != nil {
return
}
if inputMetadata.Name != "" {
metadata.Hostname = inputMetadata.Name
} else {
metadata.Hostname = inputMetadata.UUID
}
metadata.SSHPublicKeys = map[string]string{}
// CloudSigma uses an empty string, rather than no string,
// to represent the lack of a SSH key
if key, _ := inputMetadata.Meta["ssh_public_key"]; len(key) > 0 {
splitted := strings.Split(key, " ")
metadata.SSHPublicKeys[splitted[len(splitted)-1]] = key
}
for _, nic := range inputMetadata.Nics {
if nic.IPv4Conf.IP.UUID != "" {
metadata.PublicIPv4 = net.ParseIP(nic.IPv4Conf.IP.UUID)
}
if nic.VLAN.UUID != "" {
if localIP, err := scs.findLocalIP(nic.Mac); err == nil {
metadata.PrivateIPv4 = localIP
}
}
}
return
}
func (scs *serverContextService) FetchUserdata() ([]byte, error) {
metadata, err := scs.client.Meta()
if err != nil {
return []byte{}, err
}
userData, ok := metadata[userDataFieldName]
if ok && isBase64Encoded(userDataFieldName, metadata) {
if decodedUserData, err := base64.StdEncoding.DecodeString(userData); err == nil {
return decodedUserData, nil
} else {
return []byte{}, nil
}
}
return []byte(userData), nil
}
func (scs *serverContextService) findLocalIP(mac string) (net.IP, error) {
ifaces, err := net.Interfaces()
if err != nil {
return nil, err
}
ifaceMac, err := net.ParseMAC(mac)
if err != nil {
return nil, err
}
for _, iface := range ifaces {
if !bytes.Equal(iface.HardwareAddr, ifaceMac) {
continue
}
addrs, err := iface.Addrs()
if err != nil {
continue
}
for _, addr := range addrs {
switch ip := addr.(type) {
case *net.IPNet:
if ip.IP.To4() != nil {
return ip.IP.To4(), nil
}
}
}
}
return nil, errors.New("Local IP not found")
}
func isBase64Encoded(field string, userdata map[string]string) bool {
base64Fields, ok := userdata["base64_fields"]
if !ok {
return false
}
for _, base64Field := range strings.Split(base64Fields, ",") {
if field == base64Field {
return true
}
}
return false
}
func hasDHCPLeases() bool {
files, err := ioutil.ReadDir("/run/systemd/netif/leases/")
return err == nil && len(files) > 0
}

200
datasource/metadata/cloudsigma/server_context_test.go
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@@ -1,200 +0,0 @@
// Copyright 2015 CoreOS, Inc.
//
// 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 cloudsigma
import (
"net"
"reflect"
"testing"
)
type fakeCepgoClient struct {
raw []byte
meta map[string]string
keys map[string]interface{}
err error
}
func (f *fakeCepgoClient) All() (interface{}, error) {
return f.keys, f.err
}
func (f *fakeCepgoClient) Key(key string) (interface{}, error) {
return f.keys[key], f.err
}
func (f *fakeCepgoClient) Meta() (map[string]string, error) {
return f.meta, f.err
}
func (f *fakeCepgoClient) FetchRaw(key string) ([]byte, error) {
return f.raw, f.err
}
func TestServerContextWithEmptyPublicSSHKey(t *testing.T) {
client := new(fakeCepgoClient)
scs := NewServerContextService()
scs.client = client
client.raw = []byte(`{
"meta": {
"base64_fields": "cloudinit-user-data",
"cloudinit-user-data": "I2Nsb3VkLWNvbmZpZwoKaG9zdG5hbWU6IGNvcmVvczE=",
"ssh_public_key": ""
}
}`)
metadata, err := scs.FetchMetadata()
if err != nil {
t.Error(err.Error())
}
if len(metadata.SSHPublicKeys) != 0 {
t.Error("There should be no Public SSH Keys provided")
}
}
func TestServerContextFetchMetadata(t *testing.T) {
client := new(fakeCepgoClient)
scs := NewServerContextService()
scs.client = client
client.raw = []byte(`{
"context": true,
"cpu": 4000,
"cpu_model": null,
"cpus_instead_of_cores": false,
"enable_numa": false,
"grantees": [],
"hv_relaxed": false,
"hv_tsc": false,
"jobs": [],
"mem": 4294967296,
"meta": {
"base64_fields": "cloudinit-user-data",
"cloudinit-user-data": "I2Nsb3VkLWNvbmZpZwoKaG9zdG5hbWU6IGNvcmVvczE=",
"ssh_public_key": "ssh-rsa AAAAB3NzaC1yc2E.../hQ5D5 john@doe"
},
"name": "coreos",
"nics": [
{
"boot_order": null,
"ip_v4_conf": {
"conf": "dhcp",
"ip": {
"gateway": "31.171.244.1",
"meta": {},
"nameservers": [
"178.22.66.167",
"178.22.71.56",
"8.8.8.8"
],
"netmask": 22,
"tags": [],
"uuid": "31.171.251.74"
}
},
"ip_v6_conf": null,
"mac": "22:3d:09:6b:90:f3",
"model": "virtio",
"vlan": null
},
{
"boot_order": null,
"ip_v4_conf": null,
"ip_v6_conf": null,
"mac": "22:ae:4a:fb:8f:31",
"model": "virtio",
"vlan": {
"meta": {
"description": "",
"name": "CoreOS"
},
"tags": [],
"uuid": "5dec030e-25b8-4621-a5a4-a3302c9d9619"
}
}
],
"smp": 2,
"status": "running",
"uuid": "20a0059b-041e-4d0c-bcc6-9b2852de48b3"
}`)
metadata, err := scs.FetchMetadata()
if err != nil {
t.Error(err.Error())
}
if metadata.Hostname != "coreos" {
t.Errorf("Hostname is not 'coreos' but %s instead", metadata.Hostname)
}
if metadata.SSHPublicKeys["john@doe"] != "ssh-rsa AAAAB3NzaC1yc2E.../hQ5D5 john@doe" {
t.Error("Public SSH Keys are not being read properly")
}
if !metadata.PublicIPv4.Equal(net.ParseIP("31.171.251.74")) {
t.Errorf("Public IP is not 31.171.251.74 but %s instead", metadata.PublicIPv4)
}
}
func TestServerContextFetchUserdata(t *testing.T) {
client := new(fakeCepgoClient)
scs := NewServerContextService()
scs.client = client
userdataSets := []struct {
in map[string]string
err bool
out []byte
}{
{map[string]string{
"base64_fields": "cloudinit-user-data",
"cloudinit-user-data": "aG9zdG5hbWU6IGNvcmVvc190ZXN0",
}, false, []byte("hostname: coreos_test")},
{map[string]string{
"cloudinit-user-data": "#cloud-config\\nhostname: coreos1",
}, false, []byte("#cloud-config\\nhostname: coreos1")},
{map[string]string{}, false, []byte{}},
}
for i, set := range userdataSets {
client.meta = set.in
got, err := scs.FetchUserdata()
if (err != nil) != set.err {
t.Errorf("case %d: bad error state (got %t, want %t)", i, err != nil, set.err)
}
if !reflect.DeepEqual(got, set.out) {
t.Errorf("case %d: got %s, want %s", i, got, set.out)
}
}
}
func TestServerContextDecodingBase64UserData(t *testing.T) {
base64Sets := []struct {
in string
out bool
}{
{"cloudinit-user-data,foo,bar", true},
{"bar,cloudinit-user-data,foo,bar", true},
{"cloudinit-user-data", true},
{"", false},
{"foo", false},
}
for _, set := range base64Sets {
userdata := map[string]string{"base64_fields": set.in}
if isBase64Encoded("cloudinit-user-data", userdata) != set.out {
t.Errorf("isBase64Encoded(cloudinit-user-data, %s) should be %t", userdata, set.out)
}
}
}