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initialize/env: fall back to COREOS_*_IPV4 env variables

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This commit is contained in:
Jonathan Boulle 2014-06-24 18:49:49 -07:00
parent ba1c1e97d0
commit 439b7e8b98
2 changed files with 47 additions and 15 deletions
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10
initialize/env.go
View File

@ -1,6 +1,7 @@
package initialize
import (
"os"
"path"
"strings"
)
@ -18,6 +19,15 @@ type Environment struct {
// TODO(jonboulle): this is getting unwieldy, should be able to simplify the interface somehow
func NewEnvironment(root, configRoot, workspace, netconfType, sshKeyName string, substitutions map[string]string) *Environment {
// If certain values are not in the supplied substitution, fall back to retrieving them from the environment
for k, v := range map[string]string{
"$public_ipv4": os.Getenv("COREOS_PUBLIC_IPV4"),
"$private_ipv4": os.Getenv("COREOS_PRIVATE_IPV4"),
} {
if _, ok := substitutions[k]; !ok {
substitutions[k] = v
}
}
return &Environment{root, configRoot, workspace, netconfType, sshKeyName, substitutions}
}

52
initialize/env_test.go
View File

@ -1,26 +1,48 @@
package initialize
import "testing"
import (
"os"
"testing"
)
func TestEnvironmentApply(t *testing.T) {
subs := map[string]string{
"$public_ipv4": "192.0.2.3",
"$private_ipv4": "192.0.2.203",
}
env := NewEnvironment("./", "./", "./", "", "", subs)
input := `[Service]
os.Setenv("COREOS_PUBLIC_IPV4", "1.2.3.4")
os.Setenv("COREOS_PRIVATE_IPV4", "5.6.7.8")
for _, tt := range []struct {
subs map[string]string
input string
out string
}{
{
map[string]string{
"$public_ipv4": "192.0.2.3",
"$private_ipv4": "192.0.2.203",
},
`[Service]
ExecStart=/usr/bin/echo "$public_ipv4"
ExecStop=/usr/bin/echo $private_ipv4
ExecStop=/usr/bin/echo $unknown
`
expected := `[Service]
ExecStop=/usr/bin/echo $unknown`,
`[Service]
ExecStart=/usr/bin/echo "192.0.2.3"
ExecStop=/usr/bin/echo 192.0.2.203
ExecStop=/usr/bin/echo $unknown
`
ExecStop=/usr/bin/echo $unknown`,
},
{
map[string]string{"$private_ipv4": "127.0.0.1"},
"$private_ipv4\n$public_ipv4",
"127.0.0.1\n1.2.3.4",
},
{
map[string]string{"foo": "bar"},
"$private_ipv4\n$public_ipv4",
"5.6.7.8\n1.2.3.4",
},
} {
output := env.Apply(input)
if output != expected {
t.Fatalf("Environment incorrectly applied.\nOutput:\n%s\nExpected:\n%s", output, expected)
env := NewEnvironment("./", "./", "./", "", "", tt.subs)
got := env.Apply(tt.input)
if got != tt.out {
t.Fatalf("Environment incorrectly applied.\ngot:\n%s\nwant:\n%s", got, tt.out)
}
}
}