-
Notifications
You must be signed in to change notification settings - Fork 90
/
cluster.go
103 lines (90 loc) · 2.97 KB
/
cluster.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
// Copyright 2019 Hewlett Packard Enterprise Development LP
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package executor
import (
"context"
kdv1 "github.com/bluek8s/kubedirector/pkg/apis/kubedirector/v1beta1"
"github.com/bluek8s/kubedirector/pkg/shared"
)
// UpdateClusterStatus propagates status changes back to k8s. Roles or members
// in the status that have been marked for deletion (by having certain fields
// set to emptystring) will be removed before the writeback.
func UpdateClusterStatus(
cr *kdv1.KubeDirectorCluster,
) error {
// Before writing back, remove any RoleStatus where StatefulSet is
// emptystring, and remove any MemberStatus where Pod is emptystring.
compact(&(cr.Status.Roles))
return shared.StatusUpdate(context.TODO(), cr)
}
// compact edits the input slice of role statuses so that any elements that
// have an empty string StatefulSet field are removed from the slice. Also
// compactMembers is invoked on the Pod field of the non-removed elements.
func compact(
r *[]kdv1.RoleStatus,
) {
numRoles := len(*r)
numRemovedRoles := 0
for i := 0; i < numRoles; i++ {
// Is this role status marked for removal?
if (*r)[i].StatefulSet == "" {
// Is there a subsequent role we can compact into this slot?
didCompact := false
for j := i + 1; j < numRoles; j++ {
if (*r)[j].StatefulSet != "" {
(*r)[i] = (*r)[j]
(*r)[j].StatefulSet = ""
didCompact = true
break
}
}
if !didCompact {
// Didn't find any subsequent non-empty slots. Time to stop
// looping.
numRemovedRoles = (numRoles - i)
break
}
}
// Compact the member status list.
compactMembers(&((*r)[i].Members))
}
*r = (*r)[:numRoles-numRemovedRoles]
}
// compactMembers edits the input slice of member statuses so that any
// elements that have an emptystring Pod field are removed from the slice.
func compactMembers(
m *[]kdv1.MemberStatus,
) {
numMembers := len(*m)
numRemovedMembers := 0
for i := 0; i < numMembers; i++ {
// Is this members status marked for removal?
if (*m)[i].Pod == "" {
// Is there a subsequent member we can compact into this slot?
didCompact := false
for j := i + 1; j < numMembers; j++ {
if (*m)[j].Pod != "" {
(*m)[i] = (*m)[j]
(*m)[j].Pod = ""
didCompact = true
break
}
}
if !didCompact {
// Didn't find any subsequent non-empty slots. Time to stop
// looping.
numRemovedMembers = (numMembers - i)
break
}
}
}
*m = (*m)[:numMembers-numRemovedMembers]
}