forked from coreos/ignition
-
Notifications
You must be signed in to change notification settings - Fork 0
/
packet.go
135 lines (121 loc) · 3.41 KB
/
packet.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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
// Copyright 2016 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.
// The packet provider fetches a remote configuration from the packet.net
// userdata metadata service URL.
package packet
import (
"bytes"
"encoding/json"
"errors"
"net/http"
"net/url"
"strings"
"github.com/coreos/ignition/config/validate/report"
"github.com/coreos/ignition/internal/config/types"
"github.com/coreos/ignition/internal/providers/util"
"github.com/coreos/ignition/internal/resource"
)
var (
ErrValidFetchEmptyData = errors.New("fetch successful but fetched data empty")
)
var (
userdataUrl = url.URL{
Scheme: "https",
Host: "metadata.packet.net",
Path: "userdata",
}
)
var (
metadataUrl = url.URL{
Scheme: "https",
Host: "metadata.packet.net",
Path: "metadata",
}
)
func FetchConfig(f resource.Fetcher) (types.Config, report.Report, error) {
// Packet's metadata service returns "Not Acceptable" when queried
// with the default Accept header.
headers := resource.ConfigHeaders
headers.Set("Accept", "*/*")
data, err := f.FetchToBuffer(userdataUrl, resource.FetchOptions{
Headers: headers,
})
if err != nil {
return types.Config{}, report.Report{}, err
}
return util.ParseConfig(f.Logger, data)
}
// PostStatus posts a message that will show on the Packet Instance Timeline
func PostStatus(stageName string, f resource.Fetcher, errMsg error) error {
f.Logger.Info("POST message to Packet Timeline")
// fetch JSON from https://metadata.packet.net/metadata
data, err := f.FetchToBuffer(metadataUrl, resource.FetchOptions{
Headers: nil,
})
if err != nil {
return err
}
if data == nil {
return ErrValidFetchEmptyData
}
metadata := struct {
PhoneHomeURL string `json:"phone_home_url"`
}{}
err = json.Unmarshal(data, &metadata)
if err != nil {
return err
}
phonehomeURL := metadata.PhoneHomeURL
// to get phonehome IPv4
phonehomeURL = strings.TrimSuffix(phonehomeURL, "/phone-home")
// POST Message to phonehome IP
postMessageURL := phonehomeURL + "/events"
return postMessage(stageName, errMsg, postMessageURL)
}
// postMessage makes a post request with the supplied message to the url
func postMessage(stageName string, e error, url string) error {
stageName = "[" + stageName + "]"
type mStruct struct {
State string `json:"state"`
Message string `json:"message"`
}
m := mStruct{}
if e != nil {
m = mStruct{
State: "failed",
Message: stageName + " Ignition error: " + e.Error(),
}
} else {
m = mStruct{
State: "running",
Message: stageName + " Ignition status: finished successfully",
}
}
messageJSON, err := json.Marshal(m)
if err != nil {
return err
}
postReq, err := http.NewRequest("POST", url, bytes.NewBuffer(messageJSON))
if err != nil {
return err
}
postReq.Header.Set("Content-Type", "application/json")
client := &http.Client{}
respPost, err := client.Do(postReq)
if err != nil {
return err
}
defer respPost.Body.Close()
return err
}