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
|
package protocol
import (
"bytes"
"fmt"
"math"
"strconv"
"time"
"github.com/aws/aws-sdk-go/internal/sdkmath"
)
// Names of time formats supported by the SDK
const (
RFC822TimeFormatName = "rfc822"
ISO8601TimeFormatName = "iso8601"
UnixTimeFormatName = "unixTimestamp"
)
// Time formats supported by the SDK
// Output time is intended to not contain decimals
const (
// RFC 7231#section-7.1.1.1 timetamp format. e.g Tue, 29 Apr 2014 18:30:38 GMT
RFC822TimeFormat = "Mon, 2 Jan 2006 15:04:05 GMT"
rfc822TimeFormatSingleDigitDay = "Mon, _2 Jan 2006 15:04:05 GMT"
rfc822TimeFormatSingleDigitDayTwoDigitYear = "Mon, _2 Jan 06 15:04:05 GMT"
// This format is used for output time without seconds precision
RFC822OutputTimeFormat = "Mon, 02 Jan 2006 15:04:05 GMT"
// RFC3339 a subset of the ISO8601 timestamp format. e.g 2014-04-29T18:30:38Z
ISO8601TimeFormat = "2006-01-02T15:04:05.999999999Z"
iso8601TimeFormatNoZ = "2006-01-02T15:04:05.999999999"
// This format is used for output time with fractional second precision up to milliseconds
ISO8601OutputTimeFormat = "2006-01-02T15:04:05.999999999Z"
)
// IsKnownTimestampFormat returns if the timestamp format name
// is know to the SDK's protocols.
func IsKnownTimestampFormat(name string) bool {
switch name {
case RFC822TimeFormatName:
fallthrough
case ISO8601TimeFormatName:
fallthrough
case UnixTimeFormatName:
return true
default:
return false
}
}
// FormatTime returns a string value of the time.
func FormatTime(name string, t time.Time) string {
t = t.UTC().Truncate(time.Millisecond)
switch name {
case RFC822TimeFormatName:
return t.Format(RFC822OutputTimeFormat)
case ISO8601TimeFormatName:
return t.Format(ISO8601OutputTimeFormat)
case UnixTimeFormatName:
ms := t.UnixNano() / int64(time.Millisecond)
return strconv.FormatFloat(float64(ms)/1e3, 'f', -1, 64)
default:
panic("unknown timestamp format name, " + name)
}
}
// ParseTime attempts to parse the time given the format. Returns
// the time if it was able to be parsed, and fails otherwise.
func ParseTime(formatName, value string) (time.Time, error) {
switch formatName {
case RFC822TimeFormatName: // Smithy HTTPDate format
return tryParse(value,
RFC822TimeFormat,
rfc822TimeFormatSingleDigitDay,
rfc822TimeFormatSingleDigitDayTwoDigitYear,
time.RFC850,
time.ANSIC,
)
case ISO8601TimeFormatName: // Smithy DateTime format
return tryParse(value,
ISO8601TimeFormat,
iso8601TimeFormatNoZ,
time.RFC3339Nano,
time.RFC3339,
)
case UnixTimeFormatName:
v, err := strconv.ParseFloat(value, 64)
_, dec := math.Modf(v)
dec = sdkmath.Round(dec*1e3) / 1e3 //Rounds 0.1229999 to 0.123
if err != nil {
return time.Time{}, err
}
return time.Unix(int64(v), int64(dec*(1e9))), nil
default:
panic("unknown timestamp format name, " + formatName)
}
}
func tryParse(v string, formats ...string) (time.Time, error) {
var errs parseErrors
for _, f := range formats {
t, err := time.Parse(f, v)
if err != nil {
errs = append(errs, parseError{
Format: f,
Err: err,
})
continue
}
return t, nil
}
return time.Time{}, fmt.Errorf("unable to parse time string, %v", errs)
}
type parseErrors []parseError
func (es parseErrors) Error() string {
var s bytes.Buffer
for _, e := range es {
fmt.Fprintf(&s, "\n * %q: %v", e.Format, e.Err)
}
return "parse errors:" + s.String()
}
type parseError struct {
Format string
Err error
}
|
