unistack-org/cloudinit
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metadata: add support for IPv6 variable substitution

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This commit is contained in:
Alex Crawford 2014-09-11 08:35:09 -07:00
parent 24a6f7c49c
commit 56815a6756
4 changed files with 42 additions and 17 deletions
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8
initialize/env.go
View File

@ -28,6 +28,8 @@ func NewEnvironment(root, configRoot, workspace, netconfType, sshKeyName string,
for k, v := range map[string]string{
"$public_ipv4": os.Getenv("COREOS_PUBLIC_IPV4"),
"$private_ipv4": os.Getenv("COREOS_PRIVATE_IPV4"),
"$public_ipv6": os.Getenv("COREOS_PUBLIC_IPV6"),
"$private_ipv6": os.Getenv("COREOS_PRIVATE_IPV6"),
} {
if _, ok := substitutions[k]; !ok {
substitutions[k] = v
@ -80,6 +82,12 @@ func (e *Environment) DefaultEnvironmentFile() *system.EnvFile {
if ip, ok := e.substitutions["$private_ipv4"]; ok && len(ip) > 0 {
ef.Vars["COREOS_PRIVATE_IPV4"] = ip
}
if ip, ok := e.substitutions["$public_ipv6"]; ok && len(ip) > 0 {
ef.Vars["COREOS_PUBLIC_IPV6"] = ip
}
if ip, ok := e.substitutions["$private_ipv6"]; ok && len(ip) > 0 {
ef.Vars["COREOS_PRIVATE_IPV6"] = ip
}
if len(ef.Vars) == 0 {
return nil
} else {

18
initialize/env_test.go
View File

@ -12,6 +12,8 @@ import (
func TestEnvironmentApply(t *testing.T) {
os.Setenv("COREOS_PUBLIC_IPV4", "1.2.3.4")
os.Setenv("COREOS_PRIVATE_IPV4", "5.6.7.8")
os.Setenv("COREOS_PUBLIC_IPV6", "1234::")
os.Setenv("COREOS_PRIVATE_IPV6", "5678::")
for _, tt := range []struct {
subs map[string]string
input string
@ -23,14 +25,16 @@ func TestEnvironmentApply(t *testing.T) {
map[string]string{
"$public_ipv4": "192.0.2.3",
"$private_ipv4": "192.0.2.203",
"$public_ipv6": "fe00:1234::",
"$private_ipv6": "fe00:5678::",
},
`[Service]
ExecStart=/usr/bin/echo "$public_ipv4"
ExecStop=/usr/bin/echo $private_ipv4
ExecStart=/usr/bin/echo "$public_ipv4 $public_ipv6"
ExecStop=/usr/bin/echo $private_ipv4 $private_ipv6
ExecStop=/usr/bin/echo $unknown`,
`[Service]
ExecStart=/usr/bin/echo "192.0.2.3"
ExecStop=/usr/bin/echo 192.0.2.203
ExecStart=/usr/bin/echo "192.0.2.3 fe00:1234::"
ExecStop=/usr/bin/echo 192.0.2.203 fe00:5678::
ExecStop=/usr/bin/echo $unknown`,
},
{
@ -65,8 +69,10 @@ func TestEnvironmentFile(t *testing.T) {
subs := map[string]string{
"$public_ipv4": "1.2.3.4",
"$private_ipv4": "5.6.7.8",
"$public_ipv6": "1234::",
"$private_ipv6": "5678::",
}
expect := "COREOS_PRIVATE_IPV4=5.6.7.8\nCOREOS_PUBLIC_IPV4=1.2.3.4\n"
expect := "COREOS_PRIVATE_IPV4=5.6.7.8\nCOREOS_PRIVATE_IPV6=5678::\nCOREOS_PUBLIC_IPV4=1.2.3.4\nCOREOS_PUBLIC_IPV6=1234::\n"
dir, err := ioutil.TempDir(os.TempDir(), "coreos-cloudinit-")
if err != nil {
@ -96,6 +102,8 @@ func TestEnvironmentFileNil(t *testing.T) {
subs := map[string]string{
"$public_ipv4": "",
"$private_ipv4": "",
"$public_ipv6": "",
"$private_ipv6": "",
}
env := NewEnvironment("./", "./", "./", "", "", subs)

29
initialize/meta_data.go
View File

@ -5,8 +5,8 @@ import (
"sort"
)
// ParseMetaData parses a JSON blob in the OpenStack metadata service format, and
// converts it to a partially hydrated CloudConfig
// ParseMetaData parses a JSON blob in the OpenStack metadata service format,
// and converts it to a partially hydrated CloudConfig.
func ParseMetaData(contents string) (*CloudConfig, error) {
if len(contents) == 0 {
return nil, nil
@ -34,22 +34,31 @@ func ParseMetaData(contents string) (*CloudConfig, error) {
return &cfg, nil
}
// ExtractIPsFromMetaData parses a JSON blob in the OpenStack metadata service format,
// and returns a substitution map possibly containing private_ipv4 and public_ipv4 addresses
// ExtractIPsFromMetaData parses a JSON blob in the OpenStack metadata service
// format and returns a substitution map possibly containing private_ipv4,
// public_ipv4, private_ipv6, and public_ipv6 addresses.
func ExtractIPsFromMetadata(contents []byte) (map[string]string, error) {
var ips struct {
Public string `json:"public-ipv4"`
Private string `json:"local-ipv4"`
PublicIPv4 string `json:"public-ipv4"`
PrivateIPv4 string `json:"local-ipv4"`
PublicIPv6 string `json:"public-ipv6"`
PrivateIPv6 string `json:"local-ipv6"`
}
if err := json.Unmarshal(contents, &ips); err != nil {
return nil, err
}
m := make(map[string]string)
if ips.Private != "" {
m["$private_ipv4"] = ips.Private
if ips.PrivateIPv4 != "" {
m["$private_ipv4"] = ips.PrivateIPv4
}
if ips.Public != "" {
m["$public_ipv4"] = ips.Public
if ips.PublicIPv4 != "" {
m["$public_ipv4"] = ips.PublicIPv4
}
if ips.PrivateIPv6 != "" {
m["$private_ipv6"] = ips.PrivateIPv6
}
if ips.PublicIPv6 != "" {
m["$public_ipv6"] = ips.PublicIPv6
}
return m, nil
}

4
initialize/meta_data_test.go
View File

@ -43,9 +43,9 @@ func TestExtractIPsFromMetadata(t *testing.T) {
out map[string]string
}{
{
[]byte(`{"public-ipv4": "12.34.56.78", "local-ipv4": "1.2.3.4"}`),
[]byte(`{"public-ipv4": "12.34.56.78", "local-ipv4": "1.2.3.4", "public-ipv6": "1234::", "local-ipv6": "5678::"}`),
false,
map[string]string{"$public_ipv4": "12.34.56.78", "$private_ipv4": "1.2.3.4"},
map[string]string{"$public_ipv4": "12.34.56.78", "$private_ipv4": "1.2.3.4", "$public_ipv6": "1234::", "$private_ipv6": "5678::"},
},
{
[]byte(`{"local-ipv4": "127.0.0.1", "something_else": "don't care"}`),