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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
//go:build go1.13 && integration && perftest
// +build go1.13,integration,perftest
package main
import (
"flag"
"fmt"
"net/http"
"strings"
"time"
"github.com/aws/aws-sdk-go/service/s3/s3manager"
)
type Config struct {
Bucket string
Size int64
Key string
LogVerbose bool
UploadPartSize int64
SDK SDKConfig
Client ClientConfig
Profiler Profiler
}
func (c *Config) SetupFlags(prefix string, flagset *flag.FlagSet) {
flagset.StringVar(&c.Bucket, "bucket", "",
"The S3 bucket `name` to download the object from.")
flagset.Int64Var(&c.Size, "size", 0,
"The S3 object size in bytes to be first uploaded then downloaded")
flagset.StringVar(&c.Key, "key", "", "The S3 object key to download")
flagset.BoolVar(&c.LogVerbose, "verbose", false,
"The output log will include verbose request information")
flagset.Int64Var(&c.UploadPartSize, "upload-part-size", 0, "the upload part size when uploading a file to s3")
c.SDK.SetupFlags(prefix, flagset)
c.Client.SetupFlags(prefix, flagset)
c.Profiler.SetupFlags(prefix, flagset)
}
func (c *Config) Validate() error {
var errs Errors
if len(c.Bucket) == 0 || (c.Size <= 0 && len(c.Key) == 0) {
errs = append(errs, fmt.Errorf("bucket and filename/size are required"))
}
if err := c.SDK.Validate(); err != nil {
errs = append(errs, err)
}
if err := c.Client.Validate(); err != nil {
errs = append(errs, err)
}
if len(errs) != 0 {
return errs
}
return nil
}
type SDKConfig struct {
PartSize int64
Concurrency int
BufferProvider s3manager.WriterReadFromProvider
}
func (c *SDKConfig) SetupFlags(prefix string, flagset *flag.FlagSet) {
prefix += "sdk."
flagset.Int64Var(&c.PartSize, prefix+"part-size", s3manager.DefaultDownloadPartSize,
"Specifies the `size` of parts of the object to download.")
flagset.IntVar(&c.Concurrency, prefix+"concurrency", s3manager.DefaultDownloadConcurrency,
"Specifies the number of parts to download `at once`.")
}
func (c *SDKConfig) Validate() error {
return nil
}
type ClientConfig struct {
KeepAlive bool
Timeouts Timeouts
MaxIdleConns int
MaxIdleConnsPerHost int
// Go 1.13
ReadBufferSize int
WriteBufferSize int
}
func (c *ClientConfig) SetupFlags(prefix string, flagset *flag.FlagSet) {
prefix += "client."
flagset.BoolVar(&c.KeepAlive, prefix+"http-keep-alive", true,
"Specifies if HTTP keep alive is enabled.")
defTR := http.DefaultTransport.(*http.Transport)
flagset.IntVar(&c.MaxIdleConns, prefix+"idle-conns", defTR.MaxIdleConns,
"Specifies max idle connection pool size.")
flagset.IntVar(&c.MaxIdleConnsPerHost, prefix+"idle-conns-host", http.DefaultMaxIdleConnsPerHost,
"Specifies max idle connection pool per host, will be truncated by idle-conns.")
flagset.IntVar(&c.ReadBufferSize, prefix+"read-buffer", defTR.ReadBufferSize, "size of the transport read buffer used")
flagset.IntVar(&c.WriteBufferSize, prefix+"writer-buffer", defTR.WriteBufferSize, "size of the transport write buffer used")
c.Timeouts.SetupFlags(prefix, flagset)
}
func (c *ClientConfig) Validate() error {
var errs Errors
if err := c.Timeouts.Validate(); err != nil {
errs = append(errs, err)
}
if len(errs) != 0 {
return errs
}
return nil
}
type Timeouts struct {
Connect time.Duration
TLSHandshake time.Duration
ExpectContinue time.Duration
ResponseHeader time.Duration
}
func (c *Timeouts) SetupFlags(prefix string, flagset *flag.FlagSet) {
prefix += "timeout."
flagset.DurationVar(&c.Connect, prefix+"connect", 30*time.Second,
"The `timeout` connecting to the remote host.")
defTR := http.DefaultTransport.(*http.Transport)
flagset.DurationVar(&c.TLSHandshake, prefix+"tls", defTR.TLSHandshakeTimeout,
"The `timeout` waiting for the TLS handshake to complete.")
flagset.DurationVar(&c.ExpectContinue, prefix+"expect-continue", defTR.ExpectContinueTimeout,
"The `timeout` waiting for the TLS handshake to complete.")
flagset.DurationVar(&c.ResponseHeader, prefix+"response-header", defTR.ResponseHeaderTimeout,
"The `timeout` waiting for the TLS handshake to complete.")
}
func (c *Timeouts) Validate() error {
return nil
}
type Errors []error
func (es Errors) Error() string {
var buf strings.Builder
for _, e := range es {
buf.WriteString(e.Error())
}
return buf.String()
}
|
