-
Notifications
You must be signed in to change notification settings - Fork 0
/
unit.go
88 lines (73 loc) · 1.91 KB
/
unit.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
/*
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 (
"path"
"github.com/coreos/fleet/etcd"
"github.com/coreos/fleet/log"
"github.com/coreos/fleet/unit"
)
const (
unitPrefix = "/unit/"
)
func (r *EtcdRegistry) storeOrGetUnitFile(u unit.UnitFile) (err error) {
um := unitModel{
Raw: u.String(),
}
json, err := marshal(um)
if err != nil {
return err
}
req := etcd.Create{
Key: r.hashedUnitPath(u.Hash()),
Value: json,
}
_, err = r.etcd.Do(&req)
// unit is already stored
if err != nil && isNodeExist(err) {
// TODO(jonboulle): verify more here?
err = nil
}
return
}
// getUnitByHash retrieves from the Registry the Unit associated with the given Hash
func (r *EtcdRegistry) getUnitByHash(hash unit.Hash) *unit.UnitFile {
req := etcd.Get{
Key: r.hashedUnitPath(hash),
Recursive: true,
}
resp, err := r.etcd.Do(&req)
if err != nil {
if isKeyNotFound(err) {
err = nil
}
return nil
}
var um unitModel
if err := unmarshal(resp.Node.Value, &um); err != nil {
log.Errorf("error unmarshaling Unit(%s): %v", hash, err)
return nil
}
u, err := unit.NewUnitFile(um.Raw)
if err != nil {
log.Errorf("error parsing Unit(%s): %v", hash, err)
return nil
}
return u
}
func (r *EtcdRegistry) hashedUnitPath(hash unit.Hash) string {
return path.Join(r.keyPrefix, unitPrefix, hash.String())
}
type unitModel struct {
Raw string
}