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
|
package auth
import (
"fmt"
"io/ioutil"
"log"
"os"
"strings"
"sync"
"github.com/mitchellh/go-homedir"
)
// This is copied directly from Terraform in order to remove a single legacy
// vendor dependency.
func pathOrContents(poc string) (string, bool, error) {
if len(poc) == 0 {
return poc, false, nil
}
path := poc
if path[0] == '~' {
var err error
path, err = homedir.Expand(path)
if err != nil {
return path, true, err
}
}
if _, err := os.Stat(path); err == nil {
contents, err := ioutil.ReadFile(path)
if err != nil {
return string(contents), true, err
}
return string(contents), true, nil
}
return poc, false, nil
}
// MutexKV is a simple key/value store for arbitrary mutexes. It can be used to
// serialize changes across arbitrary collaborators that share knowledge of the
// keys they must serialize on.
//
// The initial use case is to let aws_security_group_rule resources serialize
// their access to individual security groups based on SG ID.
type mutexKV struct {
lock sync.Mutex
store map[string]*sync.Mutex
}
// Locks the mutex for the given key. Caller is responsible for calling Unlock
// for the same key
func (m *mutexKV) Lock(key string) {
log.Printf("[DEBUG] Locking %q", key)
m.get(key).Lock()
log.Printf("[DEBUG] Locked %q", key)
}
// Unlock the mutex for the given key. Caller must have called Lock for the same key first
func (m *mutexKV) Unlock(key string) {
log.Printf("[DEBUG] Unlocking %q", key)
m.get(key).Unlock()
log.Printf("[DEBUG] Unlocked %q", key)
}
// Returns a mutex for the given key, no guarantee of its lock status
func (m *mutexKV) get(key string) *sync.Mutex {
m.lock.Lock()
defer m.lock.Unlock()
mutex, ok := m.store[key]
if !ok {
mutex = &sync.Mutex{}
m.store[key] = mutex
}
return mutex
}
// Returns a properly initalized MutexKV
func newMutexKV() *mutexKV {
return &mutexKV{
store: make(map[string]*sync.Mutex),
}
}
const uaEnvVar = "TF_APPEND_USER_AGENT"
func terraformUserAgent(version, sdkVersion string) string {
ua := fmt.Sprintf("HashiCorp Terraform/%s (+https://www.terraform.io)", version)
if sdkVersion != "" {
ua += " " + fmt.Sprintf("Terraform Plugin SDK/%s", sdkVersion)
}
if add := os.Getenv(uaEnvVar); add != "" {
add = strings.TrimSpace(add)
if len(add) > 0 {
ua += " " + add
log.Printf("[DEBUG] Using modified User-Agent: %s", ua)
}
}
return ua
}
|
