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
|
package main
import (
"bytes"
"encoding/json"
"flag"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/santhosh-tekuri/jsonschema/v5"
_ "github.com/santhosh-tekuri/jsonschema/v5/httploader"
"gopkg.in/yaml.v3"
)
func usage() {
fmt.Fprintln(os.Stderr, "jv [-draft INT] [-output FORMAT] [-assertformat] [-assertcontent] <json-schema> [<json-or-yaml-doc>]...")
flag.PrintDefaults()
}
func main() {
draft := flag.Int("draft", 2020, "draft used when '$schema' attribute is missing. valid values 4, 5, 7, 2019, 2020")
output := flag.String("output", "", "output format. valid values flag, basic, detailed")
assertFormat := flag.Bool("assertformat", false, "enable format assertions with draft >= 2019")
assertContent := flag.Bool("assertcontent", false, "enable content assertions with draft >= 2019")
flag.Usage = usage
flag.Parse()
if len(flag.Args()) == 0 {
usage()
os.Exit(1)
}
compiler := jsonschema.NewCompiler()
switch *draft {
case 4:
compiler.Draft = jsonschema.Draft4
case 6:
compiler.Draft = jsonschema.Draft6
case 7:
compiler.Draft = jsonschema.Draft7
case 2019:
compiler.Draft = jsonschema.Draft2019
case 2020:
compiler.Draft = jsonschema.Draft2020
default:
fmt.Fprintln(os.Stderr, "draft must be 4, 5, 7, 2019 or 2020")
os.Exit(1)
}
compiler.LoadURL = loadURL
compiler.AssertFormat = *assertFormat
compiler.AssertContent = *assertContent
var validOutput bool
for _, out := range []string{"", "flag", "basic", "detailed"} {
if *output == out {
validOutput = true
break
}
}
if !validOutput {
fmt.Fprintln(os.Stderr, "output must be flag, basic or detailed")
os.Exit(1)
}
schema, err := compiler.Compile(flag.Arg(0))
if err != nil {
fmt.Fprintf(os.Stderr, "%#v\n", err)
os.Exit(1)
}
exitCode := 0
for _, f := range flag.Args()[1:] {
file, err := os.Open(f)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
exitCode = 1
continue
}
defer file.Close()
v, err := decodeFile(file)
if err != nil {
fmt.Fprintf(os.Stderr, "%s\n", err)
exitCode = 1
continue
}
err = schema.Validate(v)
if err != nil {
exitCode = 1
if ve, ok := err.(*jsonschema.ValidationError); ok {
var out interface{}
switch *output {
case "flag":
out = ve.FlagOutput()
case "basic":
out = ve.BasicOutput()
case "detailed":
out = ve.DetailedOutput()
}
if out == nil {
fmt.Fprintf(os.Stderr, "%#v\n", err)
} else {
b, _ := json.MarshalIndent(out, "", " ")
fmt.Fprintln(os.Stderr, string(b))
}
} else {
fmt.Fprintf(os.Stderr, "validation failed: %v\n", err)
}
} else {
if *output != "" {
fmt.Println("{\n \"valid\": true\n}")
}
}
}
os.Exit(exitCode)
}
func loadURL(s string) (io.ReadCloser, error) {
r, err := jsonschema.LoadURL(s)
if err != nil {
return nil, err
}
if strings.HasSuffix(s, ".yaml") || strings.HasSuffix(s, ".yml") {
defer r.Close()
v, err := decodeYAML(r, s)
if err != nil {
return nil, err
}
b, err := json.Marshal(v)
if err != nil {
return nil, err
}
return ioutil.NopCloser(bytes.NewReader(b)), nil
}
return r, err
}
func decodeFile(file *os.File) (interface{}, error) {
ext := filepath.Ext(file.Name())
if ext == ".yaml" || ext == ".yml" {
return decodeYAML(file, file.Name())
}
// json file
var v interface{}
dec := json.NewDecoder(file)
dec.UseNumber()
if err := dec.Decode(&v); err != nil {
return nil, fmt.Errorf("invalid json file %s: %v", file.Name(), err)
}
return v, nil
}
func decodeYAML(r io.Reader, name string) (interface{}, error) {
var v interface{}
dec := yaml.NewDecoder(r)
if err := dec.Decode(&v); err != nil {
return nil, fmt.Errorf("invalid yaml file %s: %v", name, err)
}
return v, nil
}
|
