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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
package gomplate
import (
"io"
"os"
"path"
"strconv"
"strings"
"text/template"
"time"
"github.com/hairyhenderson/gomplate/data"
"github.com/spf13/afero"
)
// Config - values necessary for rendering templates with gomplate.
// Mainly for use by the CLI
type Config struct {
Input string
InputFiles []string
InputDir string
ExcludeGlob []string
OutputFiles []string
OutputDir string
OutMode string
DataSources []string
DataSourceHeaders []string
Contexts []string
LDelim string
RDelim string
Templates []string
}
// parse an os.FileMode out of the string, and let us know if it's an override or not...
func (o *Config) getMode() (os.FileMode, bool, error) {
modeOverride := o.OutMode != ""
m, err := strconv.ParseUint("0"+o.OutMode, 8, 32)
if err != nil {
return 0, false, err
}
mode := os.FileMode(m)
return mode, modeOverride, nil
}
// nolint: gocyclo
func (o *Config) String() string {
c := "input: "
if o.Input != "" {
c += "<arg>"
} else if o.InputDir != "" {
c += o.InputDir
} else if len(o.InputFiles) > 0 {
c += strings.Join(o.InputFiles, ", ")
}
if len(o.ExcludeGlob) > 0 {
c += "\nexclude: " + strings.Join(o.ExcludeGlob, ", ")
}
c += "\noutput: "
if o.InputDir != "" && o.OutputDir != "." {
c += o.OutputDir
} else if len(o.OutputFiles) > 0 {
c += strings.Join(o.OutputFiles, ", ")
}
if o.OutMode != "" {
c += "\nchmod: " + o.OutMode
}
if len(o.DataSources) > 0 {
c += "\ndatasources: " + strings.Join(o.DataSources, ", ")
}
if len(o.DataSourceHeaders) > 0 {
c += "\ndatasourceheaders: " + strings.Join(o.DataSourceHeaders, ", ")
}
if len(o.Contexts) > 0 {
c += "\ncontexts: " + strings.Join(o.Contexts, ", ")
}
if o.LDelim != "{{" {
c += "\nleft_delim: " + o.LDelim
}
if o.RDelim != "}}" {
c += "\nright_delim: " + o.RDelim
}
if len(o.Templates) > 0 {
c += "\ntemplates: " + strings.Join(o.Templates, ", ")
}
return c
}
// gomplate -
type gomplate struct {
funcMap template.FuncMap
leftDelim string
rightDelim string
nestedTemplates templateAliases
rootTemplate *template.Template
context interface{}
}
// runTemplate -
func (g *gomplate) runTemplate(t *tplate) error {
tmpl, err := t.toGoTemplate(g)
if err != nil {
return err
}
switch t.target.(type) {
case io.Closer:
if t.target != os.Stdout {
// nolint: errcheck
defer t.target.(io.Closer).Close()
}
}
err = tmpl.Execute(t.target, g.context)
return err
}
type templateAliases map[string]string
// newGomplate -
func newGomplate(d *data.Data, leftDelim, rightDelim string, nested templateAliases, context interface{}) *gomplate {
return &gomplate{
leftDelim: leftDelim,
rightDelim: rightDelim,
funcMap: Funcs(d),
nestedTemplates: nested,
context: context,
}
}
func parseTemplateArgs(templateArgs []string) (templateAliases, error) {
nested := templateAliases{}
for _, templateArg := range templateArgs {
err := parseTemplateArg(templateArg, nested)
if err != nil {
return nil, err
}
}
return nested, nil
}
func parseTemplateArg(templateArg string, ta templateAliases) error {
parts := strings.SplitN(templateArg, "=", 2)
pth := parts[0]
alias := ""
if len(parts) > 1 {
alias = parts[0]
pth = parts[1]
}
switch fi, err := fs.Stat(pth); {
case err != nil:
return err
case fi.IsDir():
files, err := afero.ReadDir(fs, pth)
if err != nil {
return err
}
prefix := pth
if alias != "" {
prefix = alias
}
for _, f := range files {
if !f.IsDir() { // one-level only
ta[path.Join(prefix, f.Name())] = path.Join(pth, f.Name())
}
}
default:
if alias != "" {
ta[alias] = pth
} else {
ta[pth] = pth
}
}
return nil
}
// RunTemplates - run all gomplate templates specified by the given configuration
func RunTemplates(o *Config) error {
Metrics = newMetrics()
defer runCleanupHooks()
ds := append(o.DataSources, o.Contexts...)
d, err := data.NewData(ds, o.DataSourceHeaders)
if err != nil {
return err
}
addCleanupHook(d.Cleanup)
nested, err := parseTemplateArgs(o.Templates)
if err != nil {
return err
}
c, err := createContext(o.Contexts, d)
if err != nil {
return err
}
g := newGomplate(d, o.LDelim, o.RDelim, nested, c)
return g.runTemplates(o)
}
func (g *gomplate) runTemplates(o *Config) error {
start := time.Now()
tmpl, err := gatherTemplates(o)
Metrics.GatherDuration = time.Since(start)
if err != nil {
Metrics.Errors++
return err
}
Metrics.TemplatesGathered = len(tmpl)
start = time.Now()
defer func() { Metrics.TotalRenderDuration = time.Since(start) }()
for _, t := range tmpl {
tstart := time.Now()
err := g.runTemplate(t)
Metrics.RenderDuration[t.name] = time.Since(tstart)
if err != nil {
Metrics.Errors++
return err
}
Metrics.TemplatesProcessed++
}
return nil
}
|
