forked from openshift/origin
-
Notifications
You must be signed in to change notification settings - Fork 1
/
rest.go
113 lines (95 loc) · 3.12 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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
package wait
import (
"fmt"
"time"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/apimachinery/pkg/watch"
buildv1 "github.com/openshift/api/build/v1"
buildtypedclient "github.com/openshift/client-go/build/clientset/versioned/typed/build/v1"
)
var (
// ErrUnknownBuildPhase is returned for WaitForRunningBuild if an unknown phase is returned.
ErrUnknownBuildPhase = fmt.Errorf("unknown build phase")
ErrBuildDeleted = fmt.Errorf("build was deleted")
)
type ErrWatchError struct {
error
}
// WaitForRunningBuild waits until the specified build is no longer New or Pending. Returns true if
// the build ran within timeout, false if it did not, and an error if any other error state occurred.
// The last observed Build state is returned.
func WaitForRunningBuild(buildClient buildtypedclient.BuildsGetter, buildNamespace, buildName string, timeout time.Duration) (*buildv1.Build,
bool,
error) {
fieldSelector := fields.OneTermEqualSelector("metadata.name", buildName)
options := metav1.ListOptions{FieldSelector: fieldSelector.String(), ResourceVersion: "0"}
done := make(chan interface{}, 1)
var resultBuild *buildv1.Build
var success bool
var resultErr error
deadline := time.Now().Add(timeout)
go func() {
defer close(done)
defer utilruntime.HandleCrash()
for time.Now().Before(deadline) {
// make sure the build has not been deleted before we start trying to watch on it because
// we won't get a watch event for it if it's been deleted (because we are watching starting
// at resource version 0).
_, err := buildClient.Builds(buildNamespace).Get(buildName, metav1.GetOptions{})
if err != nil {
resultErr = err
if errors.IsNotFound(err) {
resultErr = ErrBuildDeleted
}
return
}
w, err := buildClient.Builds(buildNamespace).Watch(options)
if err != nil {
resultErr = err
return
}
_, err = watch.Until(timeout, w, func(event watch.Event) (bool, error) {
if event.Type == watch.Error {
return false, ErrWatchError{fmt.Errorf("watch event type error: %v", event)}
}
obj, ok := event.Object.(*buildv1.Build)
if !ok {
return false, fmt.Errorf("received unknown object while watching for builds: %T", event.Object)
}
if event.Type == watch.Deleted {
return false, ErrBuildDeleted
}
switch obj.Status.Phase {
case buildv1.BuildPhaseRunning, buildv1.BuildPhaseComplete, buildv1.BuildPhaseFailed, buildv1.BuildPhaseError, buildv1.BuildPhaseCancelled:
resultBuild = obj
return true, nil
case buildv1.BuildPhaseNew, buildv1.BuildPhasePending:
default:
return false, ErrUnknownBuildPhase
}
return false, nil
})
if err != nil {
if _, ok := err.(ErrWatchError); ok {
continue
}
resultErr = err
success = false
resultBuild = nil
return
}
success = true
return
}
}()
select {
case <-time.After(timeout):
return nil, false, wait.ErrWaitTimeout
case <-done:
return resultBuild, success, resultErr
}
}