forked from coreos/fleet
-
Notifications
You must be signed in to change notification settings - Fork 0
/
machine.go
99 lines (82 loc) · 2.31 KB
/
machine.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
// Copyright 2014 CoreOS, Inc.
//
// 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 registry
import (
"strings"
"time"
etcd "github.com/coreos/fleet/Godeps/_workspace/src/github.com/coreos/etcd/client"
"github.com/coreos/fleet/machine"
)
const (
machinePrefix = "machines"
)
func (r *EtcdRegistry) Machines() (machines []machine.MachineState, err error) {
key := r.prefixed(machinePrefix)
opts := &etcd.GetOptions{
Sort: true,
Recursive: true,
}
resp, err := r.kAPI.Get(r.ctx(), key, opts)
if err != nil {
if isEtcdError(err, etcd.ErrorCodeKeyNotFound) {
err = nil
}
return
}
for _, node := range resp.Node.Nodes {
for _, obj := range node.Nodes {
if !strings.HasSuffix(obj.Key, "/object") {
continue
}
var mach machine.MachineState
err = unmarshal(obj.Value, &mach)
if err != nil {
return
}
machines = append(machines, mach)
}
}
return
}
func (r *EtcdRegistry) SetMachineState(ms machine.MachineState, ttl time.Duration) (uint64, error) {
val, err := marshal(ms)
if err != nil {
return uint64(0), err
}
key := r.prefixed(machinePrefix, ms.ID, "object")
opts := &etcd.SetOptions{
PrevExist: etcd.PrevExist,
TTL: ttl,
}
resp, err := r.kAPI.Set(r.ctx(), key, val, opts)
if err == nil {
return resp.Node.ModifiedIndex, nil
}
// If state was not present, explicitly create it so the other members
// in the cluster know this is a new member
opts.PrevExist = etcd.PrevNoExist
resp, err = r.kAPI.Set(r.ctx(), key, val, opts)
if err != nil {
return uint64(0), err
}
return resp.Node.ModifiedIndex, nil
}
func (r *EtcdRegistry) RemoveMachineState(machID string) error {
key := r.prefixed(machinePrefix, machID, "object")
_, err := r.kAPI.Delete(r.ctx(), key, nil)
if isEtcdError(err, etcd.ErrorCodeKeyNotFound) {
err = nil
}
return err
}