/
main.go
137 lines (109 loc) · 3.51 KB
/
main.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
136
137
// Copyright 2018-2020 Burak Sezer
//
// 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.
// Command line interface for Olric
package main
import (
"flag"
"fmt"
"io/ioutil"
"log"
"os"
"runtime"
"github.com/buraksezer/olric"
"github.com/buraksezer/olric/cmd/olric-cli/cli"
"github.com/sean-/seed"
)
const (
defaultSerializer string = "gob"
defaultAddr string = "127.0.0.1:3320"
)
var usage = `Usage:
olric-cli [flags] ...
Flags:
-h -help
Shows this screen.
-v -version
Shows version information.
-d -dmap
DMap to access.
-c -command
Command to run. Available commands: put, put, get, delete, destroy, incr, decr.
-s -serializer
Specifies serialization format. Available formats: gob, json, msgpack. Default: %s
-a -addr
Server URI. Default: %s
-t timeout
Specifies a time limit for requests and dial made by Olric client
The Go runtime version %s
Report bugs to https://github.com/buraksezer/olric/issues`
var (
showHelp bool
showVersion bool
dmap string
command string
addr string
timeout string
serializer string
)
func init() {
// MustInit provides guaranteed secure seeding. If `/dev/urandom` is not
// available, MustInit will panic() with an error indicating why reading from
// `/dev/urandom` failed. MustInit() will upgrade the seed if for some reason a
// call to Init() failed in the past.
seed.MustInit()
}
func main() {
// Parse command line parameters
f := flag.NewFlagSet(os.Args[0], flag.ContinueOnError)
f.SetOutput(ioutil.Discard)
f.BoolVar(&showHelp, "h", false, "")
f.BoolVar(&showHelp, "help", false, "")
f.BoolVar(&showVersion, "v", false, "")
f.BoolVar(&showVersion, "version", false, "")
f.StringVar(&command, "c", "", "")
f.StringVar(&command, "command", "", "")
f.StringVar(&dmap, "d", "", "")
f.StringVar(&dmap, "dmap", "", "")
f.StringVar(&timeout, "t", "10s", "")
f.StringVar(&timeout, "timeout", "10s", "")
f.StringVar(&addr, "a", defaultAddr, "")
f.StringVar(&addr, "addr", defaultAddr, "")
f.StringVar(&serializer, "s", defaultSerializer, "")
f.StringVar(&serializer, "serializer", defaultSerializer, "")
logger := log.New(os.Stderr, "", log.LstdFlags)
logger.SetFlags(log.Flags() &^ (log.Ldate | log.Ltime))
if err := f.Parse(os.Args[1:]); err != nil {
logger.Fatalf("Failed to parse flags: %v", err)
}
if showVersion {
logger.Printf("olric-cli %s with runtime %s\n", olric.ReleaseVersion, runtime.Version())
return
} else if showHelp {
logger.Println(fmt.Sprintf(usage, defaultSerializer, defaultAddr, runtime.Version()))
return
}
c, err := cli.New(addr, serializer, timeout, logger)
if err != nil {
logger.Fatalf("Failed to create olric-cli instance: %v\n", err)
}
if len(command) != 0 {
if err := c.RunCommand(dmap, command); err != nil {
logger.Fatalf("olric-cli has returned an error: %v\n", err)
}
return
}
if err := c.WaitForCommand(dmap); err != nil {
logger.Fatalf("olric-cli has returned an error: %v\n", err)
}
}