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etcdutils.go
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etcdutils.go
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// Package etcdutils helps test interactions with etcd.
package etcdutils
import (
"fmt"
"strings"
"testing"
"github.com/coreos/go-etcd/etcd"
"github.com/deis/deis/tests/utils"
)
// EtcdHandle is used to set keys and values in a test etcd instance.
type EtcdHandle struct {
Dirs []string
Keys []string
C *etcd.Client
}
func etcdClient(port string) *etcd.Client {
machines := []string{"http://" + utils.HostAddress() + ":" + port}
return etcd.NewClient(machines)
}
// InitEtcd configures a test etcd instance.
func InitEtcd(setdir, setkeys []string, port string) *EtcdHandle {
cli := etcdClient(port)
controllerHandle := new(EtcdHandle)
controllerHandle.Dirs = setdir
controllerHandle.Keys = setkeys
controllerHandle.C = cli
fmt.Println("Etcd client initialized")
return controllerHandle
}
// SetSingle sets a key and value into a test etcd instance.
func SetSingle(t *testing.T, key string, value string, port string) {
c := etcdClient(port)
_, err := c.Set(key, value, 0)
if err != nil {
t.Fatal(err)
}
}
// SetEtcd sets an array of values into a test etcd instance.
func SetEtcd(t *testing.T, keys []string, values []string, c *etcd.Client) {
for i, key := range keys {
_, err := c.Set(key, values[i], 0)
if err != nil {
t.Fatal(err)
}
}
}
// VerifyEtcdKey verifies that an etcd key exists.
func VerifyEtcdKey(t *testing.T, key string, port string) {
c := etcdClient(port)
_, err := c.Get(key, true, true)
if err != nil {
t.Fatal(err)
}
}
// VerifyEtcdValue verifies the value of an etcd key.
func VerifyEtcdValue(t *testing.T, key string, expectedValue string, port string) {
c := etcdClient(port)
result, err := c.Get(key, true, true)
if err != nil {
t.Fatal(err)
}
if result.Node.Value != expectedValue {
t.Errorf(key + ": expected '" + expectedValue + "', got '" + result.Node.Value + "'.")
}
}
// PublishEtcd sets canonical etcd values into a test etcd instance.
func PublishEtcd(t *testing.T, ecli *EtcdHandle) {
fmt.Println("--- Publish etcd keys and values")
for _, dir := range ecli.Dirs {
_, err := ecli.C.SetDir(dir, 0)
if err != nil {
t.Fatal(err)
}
}
for _, key := range ecli.Keys {
switch true {
case (strings.Contains(key, "host")):
_, err := ecli.C.Set(key, "172.17.8.100", 0)
if err != nil {
t.Fatal(err)
}
case (strings.Contains(key, "port")):
_, err := ecli.C.Set(key, "10881", 0)
if err != nil {
t.Fatal(err)
}
default:
_, err := ecli.C.Set(key, "deis", 0)
if err != nil {
t.Fatal(err)
}
}
}
}