iot_server/cmd/mqtt-broker/plugin_generate.go

86 lines
1.5 KiB
Go

// +build ignore
package main
import (
"bytes"
"go/format"
"io"
"io/ioutil"
"log"
"strings"
"text/template"
"gopkg.in/yaml.v2"
)
var tmpl = `//go:generate sh -c "cd ../../ && go run plugin_generate.go"
// generated by plugin_generate.go; DO NOT EDIT
package mqttd
import (
{{- range $index, $element := .}}
_ "{{$element}}"
{{- end}}
)
`
const (
pluginFile = "./mqttd/plugins.go"
pluginCfg = "plugin_imports.yml"
importPath = "gitlab.com/tedge/edgex/internal/thummingbird/mqttbroker/plugin"
)
type ymlCfg struct {
Packages []string `yaml:"packages"`
}
func main() {
b, err := ioutil.ReadFile(pluginCfg)
if err != nil {
log.Fatalf("ReadFile error %s", err)
return
}
var cfg ymlCfg
err = yaml.Unmarshal(b, &cfg)
if err != nil {
log.Fatalf("Unmarshal error: %s", err)
return
}
t, err := template.New("plugin_gen").Parse(tmpl)
if err != nil {
log.Fatalf("Parse template error: %s", err)
return
}
for k, v := range cfg.Packages {
if !strings.Contains(v, "/") {
cfg.Packages[k] = importPath + "/" + v
}
}
if err != nil && err != io.EOF {
log.Fatalf("read error: %s", err)
return
}
buf := &bytes.Buffer{}
err = t.Execute(buf, cfg.Packages)
if err != nil {
log.Fatalf("excute template error: %s", err)
return
}
rs, err := format.Source(buf.Bytes())
if err != nil {
log.Fatalf("format error: %s", err)
return
}
err = ioutil.WriteFile(pluginFile, rs, 0666)
if err != nil {
log.Fatalf("writeFile error: %s", err)
return
}
return
}