forked from openshift/origin
-
Notifications
You must be signed in to change notification settings - Fork 0
/
rest.go
98 lines (82 loc) · 3.26 KB
/
rest.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
package rollback
import (
"fmt"
kapi "k8s.io/kubernetes/pkg/api"
kerrors "k8s.io/kubernetes/pkg/api/errors"
kclient "k8s.io/kubernetes/pkg/client/unversioned"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/util/validation/field"
"github.com/openshift/origin/pkg/client"
deployapi "github.com/openshift/origin/pkg/deploy/api"
"github.com/openshift/origin/pkg/deploy/api/validation"
deployutil "github.com/openshift/origin/pkg/deploy/util"
)
// REST provides a rollback generation endpoint. Only the Create method is implemented.
type REST struct {
generator RollbackGenerator
dn client.DeploymentConfigsNamespacer
rn kclient.ReplicationControllersNamespacer
codec runtime.Codec
}
// NewREST safely creates a new REST.
func NewREST(oc client.Interface, kc kclient.Interface, codec runtime.Codec) *REST {
return &REST{
generator: NewRollbackGenerator(),
dn: oc,
rn: kc,
codec: codec,
}
}
// New creates an empty DeploymentConfigRollback resource
func (r *REST) New() runtime.Object {
return &deployapi.DeploymentConfigRollback{}
}
// Create generates a new DeploymentConfig representing a rollback.
func (r *REST) Create(ctx kapi.Context, obj runtime.Object) (runtime.Object, error) {
namespace, ok := kapi.NamespaceFrom(ctx)
if !ok {
return nil, kerrors.NewBadRequest("namespace parameter required.")
}
rollback, ok := obj.(*deployapi.DeploymentConfigRollback)
if !ok {
return nil, kerrors.NewBadRequest(fmt.Sprintf("not a rollback spec: %#v", obj))
}
if errs := validation.ValidateDeploymentConfigRollback(rollback); len(errs) > 0 {
return nil, kerrors.NewInvalid(deployapi.Kind("DeploymentConfigRollback"), rollback.Name, errs)
}
from, err := r.dn.DeploymentConfigs(namespace).Get(rollback.Name)
if err != nil {
return nil, newInvalidError(rollback, fmt.Sprintf("cannot get deployment config %q: %v", rollback.Name, err))
}
switch from.Status.LatestVersion {
case 0:
return nil, newInvalidError(rollback, "cannot rollback an undeployed config")
case 1:
return nil, newInvalidError(rollback, fmt.Sprintf("no previous deployment exists for %q", deployutil.LabelForDeploymentConfig(from)))
}
revision := from.Status.LatestVersion - 1
if rollback.Spec.Revision > 0 {
revision = rollback.Spec.Revision
}
// Find the target deployment and decode its config.
name := deployutil.DeploymentNameForConfigVersion(from.Name, revision)
targetDeployment, err := r.rn.ReplicationControllers(namespace).Get(name)
if err != nil {
return nil, newInvalidError(rollback, err.Error())
}
to, err := deployutil.DecodeDeploymentConfig(targetDeployment, r.codec)
if err != nil {
return nil, newInvalidError(rollback, fmt.Sprintf("couldn't decode deployment config from deployment: %v", err))
}
if from.Annotations == nil && len(rollback.UpdatedAnnotations) > 0 {
from.Annotations = make(map[string]string)
}
for key, value := range rollback.UpdatedAnnotations {
from.Annotations[key] = value
}
return r.generator.GenerateRollback(from, to, &rollback.Spec)
}
func newInvalidError(rollback *deployapi.DeploymentConfigRollback, reason string) error {
err := field.Invalid(field.NewPath("name"), rollback.Name, reason)
return kerrors.NewInvalid(deployapi.Kind("DeploymentConfigRollback"), rollback.Name, field.ErrorList{err})
}